Fix CHANGELOG for 1.14 release

Add new pytest_xdist_node_collection_finished hook

.gitignore

@@ -14,9 +14,19 @@ syntax:glob
 *.class
 *.orig
 
+*.sublime-*
+.Python
+
 build/
 dist/
+include/
+lib/
+bin/
+xdist/_version.py*
 pytest_xdist.egg-info
 issue/
 3rdparty/
-.tox
+pytestdebug.log
+.tox/
+.cache/
+.eggs/

.hgtags

@@ -6,3 +6,16 @@ e6c4ce20db4bf65086ff55807a3c306cad7ca393 1.3
 eaf8b1cb7c312883598677231be5bbeea3b5c127 1.3
 a423748bf17ee778a37853225210257699cad9c1 1.4
 cd44a941c833c098e4899fe3d42a96703754d0d5 1.5
+4815040bdad8f182a5487f57a9da385483836e75 1.6
+20875fed94e7f3dff50bdf762df91153b15ceca6 1.7
+20875fed94e7f3dff50bdf762df91153b15ceca6 1.7
+29c38e195526f5f0fdd651fb51f59d6efaaafbb0 1.7
+0d1c00018008433956aa7d93007bab6ea7de96e4 1.8
+0d1c00018008433956aa7d93007bab6ea7de96e4 1.8
+1d27987c267577899350a25ba5828d55d87083ad 1.8
+5c5cb6d59e12e566fbb0217aea718dc31578bee1 1.9
+4406fc2a6427fadc021ed7e43e7aa5032b1ea91f 1.10
+220f6e46eb71a6212ccbe6b67b9e6edcf8ee4fa5 1.11
+39ef85dbc893cc63dede11601208098a667b58e9 1.12
+4e25f4c568be2d7cb4d1739638a9e66bbf28f588 v1.13
+67ff3aa4d294f75ade0ebf03267e5739e1bd9473 v1.13.1

.travis.yml

@@ -0,0 +1,46 @@
+sudo: false
+language: python
+python:
+    - '3.5'
+# command to install dependencies
+install: "pip install -U tox setuptools_scm"
+# # command to run tests
+env:
+  matrix:
+  - TESTENV=flakes
+  - TESTENV=readme
+  # matrix was trimmed to skip
+  # some builds that are unnecessary/perceived redundant:
+  # py27 and py35 are tested with all pytest versions we declare to support;
+  # py26 and py34 only with latest pytest versions.
+  # pytest24,25,26 don't work on py35 due to changes in ast module
+  - TESTENV=py26-pytest27
+  - TESTENV=py26-pytest28
+
+  - TESTENV=py27-pytest24
+  - TESTENV=py27-pytest25
+  - TESTENV=py27-pytest26
+  - TESTENV=py27-pytest27
+  - TESTENV=py27-pytest28
+
+  - TESTENV=py34-pytest27
+  - TESTENV=py34-pytest28
+
+  - TESTENV=py35-pytest27
+  - TESTENV=py35-pytest28
+
+  - TESTENV=py27-pytest28-pexpect
+  - TESTENV=py34-pytest28-pexpect
+  - TESTENV=pypy-pytest28
+
+script: tox --recreate -e $TESTENV
+
+notifications:
+  irc:
+    channels:
+      - "chat.freenode.net#pytest"
+    on_success: change
+    on_failure: change
+    skip_join: true
+  email:
+    - pytest-commit@python.org

CHANGELOG

@@ -1,3 +1,122 @@
+1.14
+----
+
+- new hook: ``pytest_xdist_node_collection_finished(node, ids)``, called when
+  a worker has finished collection. Thanks Omer Katz for the request and
+  Bruno Oliveira for the PR.
+
+- fix README display on pypi
+
+- fix #22: xdist now works if the internal tmpdir plugin is disabled.
+  Thanks Bruno Oliveira for the PR.
+
+- fix #32: xdist now works if looponfail or boxed are disabled.
+  Thanks Bruno Oliveira for the PR.
+
+
+1.13.1
+-------
+
+- fix a regression -n 0 now disables xdist again
+
+
+1.13
+-------------------------
+
+- extended the tox matrix with the supported py.test versions
+
+- split up the plugin into 3 plugin's
+  to prepare the departure of boxed and looponfail.
+
+  looponfail will be a part of core
+  and forked boxed will be replaced
+  with a more reliable primitive based on xdist
+
+- conforming with new pytest-2.8 behavior of returning non-zero when all
+  tests were skipped or deselected.
+
+- new "--max-slave-restart" option that can be used to control maximum
+  number of times pytest-xdist can restart slaves due to crashes. Thanks to
+  Anatoly Bubenkov for the report and Bruno Oliveira for the PR.
+
+- release as wheel
+
+- "-n" option now can be set to "auto" for automatic detection of number
+  of cpus in the host system. Thanks Suloev Dmitry for the PR.
+
+1.12
+-------------------------
+
+- fix issue594: properly report errors when the test collection
+  is random.  Thanks Bruno Oliveira.
+
+- some internal test suite adaptation (to become forward
+  compatible with the upcoming pytest-2.8)
+
+
+1.11
+-------------------------
+
+- fix pytest/xdist issue485 (also depends on py-1.4.22):
+  attach stdout/stderr on --boxed processes that die.
+
+- fix pytest/xdist issue503: make sure that a node has usually
+  two items to execute to avoid scoped fixtures to be torn down
+  pre-maturely (fixture teardown/setup is "nextitem" sensitive).
+  Thanks to Andreas Pelme for bug analysis and failing test.
+
+- restart crashed nodes by internally refactoring setup handling
+  of nodes.  Also includes better code documentation.
+  Many thanks to Floris Bruynooghe for the complete PR.
+
+
+1.10
+-------------------------
+
+- add glob support for rsyncignores, add command line option to pass
+  additional rsyncignores. Thanks Anatoly Bubenkov.
+
+- fix pytest issue382 - produce "pytest_runtest_logstart" event again
+  in master. Thanks Aron Curzon.
+
+- fix pytest issue419 by sending/receiving indices into the test
+  collection instead of node ids (which are not neccessarily unique
+  for functions parametrized with duplicate values)
+
+- send multiple "to test" indices in one network message to a slave
+  and improve heuristics for sending chunks where the chunksize
+  depends on the number of remaining tests rather than fixed numbers.
+  This reduces the number of master -> node messages (but not the
+  reverse direction)
+
+
+1.9
+-------------------------
+
+- changed LICENSE to MIT
+
+- fix duplicate reported test ids with --looponfailing
+  (thanks Jeremy Thurgood)
+
+- fix pytest issue41: re-run tests on all file changes, not just
+  randomly select ones like .py/.c.
+
+- fix pytest issue347: slaves running on top of Python3.2
+  will set PYTHONDONTWRITEYBTECODE to 1 to avoid import concurrency
+  bugs.
+
+1.8
+-------------------------
+
+- fix pytest-issue93 - use the refined pytest-2.2.1 runtestprotocol
+  interface to perform eager teardowns for test items.
+
+1.7
+-------------------------
+
+- fix incompatibilities with pytest-2.2.0 (allow multiple
+  pytest_runtest_logreport reports for a test item)
+
 1.6
 -------------------------
 
@@ -73,4 +192,3 @@
 - cleaned up termination handling
 - make -x cause hard killing of test nodes to decrease wait time
   until the traceback shows up on first failure
-

LICENSE

@@ -1,13 +1,19 @@
-The execnet package is released under the provisions of the Gnu Public
-License (GPL), version 2 or later.  
 
-See http://www.fsf.org/licensing/licenses/ for more information.
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+     
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+ 
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  SOFTWARE.
 
-This package also contains some minor parts which 
-which are useable under the MIT license. 
-
-If you have questions and/or want to use parts of 
-the code under a different license than the GPL 
-please contact me. 
-
-holger krekel, January 2010, holger at merlinux eu 

MANIFEST.in

@@ -2,9 +2,6 @@ include CHANGELOG
 include LICENSE 
 include README.txt
 include setup.py
+include tox.ini
 graft testing
-exclude *.orig 
-exclude *.rej 
-recursive-exclude testing *.pyc *$py.class
-prune .svn 
 prune .hg 

OVERVIEW.md

@@ -0,0 +1,76 @@
+# Overview #
+
+`xdist` works by spawning one or more **workers**, which are controlled
+by the **master**. Each **worker** is responsible for performing 
+a full test collection and afterwards running tests as dictated by the **master**.
+
+The execution flow is:
+
+1. **master** spawns one or more **workers** at the beginning of
+   the test session. The communication between **master** and **worker** nodes makes use of 
+   [execnet](http://codespeak.net/execnet/) and its [gateways](http://codespeak.net/execnet/basics.html#gateways-bootstrapping-python-interpreters).
+   The actual interpreters executing the code for the **workers** might
+   be remote or local. 
+  
+1. Each **worker** itself is a mini pytest runner. **workers** at this
+   point perform a full test collection, sending back the collected 
+   test-ids back to the **master** which does not
+   perform any collection itself.
+     
+1. The **master** receives the result of the collection from all nodes.
+   At this point the **master** performs some sanity check to ensure that
+   all **workers** collected the same tests (including order), bailing out otherwise.
+   If all is well, it converts the list of test-ids into a list of simple
+   indexes, where each index corresponds to the position of that test in the
+   original collection list. This works because all nodes have the same 
+   collection list, and saves bandwidth because the **master** can now tell
+   one of the workers to just *execute test index 3* index of passing the
+   full test id.
+   
+1. If **dist-mode** is **each**: the **master** just sends the full list
+   of test indexes to each node at this moment.
+   
+1. If **dist-mode** is **load**: the **master** takes around 25% of the
+   tests and sends them one by one to each **worker** in a round robin
+   fashion. The rest of the tests will be distributed later as **workers**
+   finish tests (see below).
+   
+1. **workers** re-implement `pytest_runtestloop`: pytest's default implementation
+   basically loops over all collected items in the `session` object and executes
+   the `pytest_runtest_protocol` for each test item, but in xdist **workers** sit idly 
+   waiting for **master** to send tests for execution. As tests are
+   received by **workers**, `pytest_runtest_protocol` is executed for each test. 
+   Here it worth noting an implementation detail: **workers** always must keep at 
+   least one test item on their queue due to how the `pytest_runtest_protocol(item, nextitem)` 
+   hook is defined: in order to pass the `nextitem` to the hook, the worker must wait for more 
+   instructions from master before executing that remaining test. If it receives more tests, 
+   then it can safely call `pytest_runtest_protocol` because it knows what the `nextitem` parameter will be. 
+   If it receives a "shutdown" signal, then it can execute the hook passing `nextitem` as `None`. 
+   
+1. As tests are started and completed at the **workers**, the results are sent
+   back to the **master**, which then just forwards the results to 
+   the appropriate pytest hooks: `pytest_runtest_logstart` and 
+   `pytest_runtest_logreport`. This way other plugins (for example `junitxml`)
+   can work normally. The **master** (when in dist-mode **load**) 
+   decides to send more tests to a node when a test completes, using
+   some heuristics such as test durations and how many tests each **worker**
+   still has to run.
+   
+1. When the **master** has no more pending tests it will
+   send a "shutdown" signal to all **workers**, which will then run their 
+   remaining tests to completion and shut down. At this point the 
+   **master** will sit waiting for **workers** to shut down, still
+   processing events such as `pytest_runtest_logreport`.
+ 
+## FAQ ##
+
+> Why does each worker do its own collection, as opposed to having 
+the master collect once and distribute from that collection to the workers?
+
+If collection was performed by master then it would have to 
+serialize collected items to send them through the wire, as workers live in another process. 
+The problem is that test items are not easily (impossible?) to serialize, as they contain references to 
+the test functions, fixture managers, config objects, etc. Even if one manages to serialize it, 
+it seems it would be very hard to get it right and easy to break by any small change in pytest. 
+  
+

README.rst

@@ -1,170 +1,230 @@
-xdist: pytest distributed testing plugin
+
-===============================================================
+.. image:: https://travis-ci.org/pytest-dev/pytest-xdist.svg?branch=master
-
+    :target: https://travis-ci.org/pytest-dev/pytest-xdist
-The `pytest-xdist`_ plugin extends py.test with some unique
+
-test execution modes:
+.. image:: http://img.shields.io/pypi/v/pytest-xdist.svg
-
+   :target: https://pypi.python.org/pypi/pytest-xdist
-* Looponfail: run your tests repeatedly in a subprocess.  After each run py.test
+
-  waits until a file in your project changes and then re-runs the previously
+.. image:: https://ci.appveyor.com/api/projects/status/56eq1a1avd4sdd7e/branch/master?svg=true
-  failing tests.  This is repeated until all tests pass after which again
+    :target: https://ci.appveyor.com/project/pytestbot/pytest-xdist
-  a full run is performed.
+
-
+xdist: pytest distributed testing plugin
-* multiprocess Load-balancing: if you have multiple CPUs or hosts you can use
+=========================================
-  those for a combined test run.  This allows to speed up
+
-  development or to use special resources of remote machines.
+The `pytest-xdist`_ plugin extends py.test with some unique
-
+test execution modes:
-* Multi-Platform coverage: you can specify different Python interpreters
+
-  or different platforms and run tests in parallel on all of them.
+* test run parallelization_: if you have multiple CPUs or hosts you can use
-
+  those for a combined test run.  This allows to speed up
-Before running tests remotely, ``py.test`` efficiently "rsyncs" your
+  development or to use special resources of `remote machines`_.
-program source code to the remote place.  All test results
+
-are reported back and displayed to your local terminal.
+* ``--boxed``: (not available on Windows) run each test in a boxed_
-You may specify different Python versions and interpreters.
+  subprocess to survive ``SEGFAULTS`` or otherwise dying processes
-
+
-
+* ``--looponfail``: run your tests repeatedly in a subprocess.  After each run
-Installation
+  py.test waits until a file in your project changes and then re-runs
------------------------
+  the previously failing tests.  This is repeated until all tests pass
-
+  after which again a full run is performed.
-Install the plugin with::
+
-
+* `Multi-Platform`_ coverage: you can specify different Python interpreters
-    easy_install pytest-xdist
+  or different platforms and run tests in parallel on all of them.
-
+
-    # or
+Before running tests remotely, ``py.test`` efficiently "rsyncs" your
-    
+program source code to the remote place.  All test results
-    pip install pytest-xdist
+are reported back and displayed to your local terminal.
-
+You may specify different Python versions and interpreters.
-or use the package in develope/in-place mode with
+
-a checkout of the `pytest-xdist repository`_ ::
+
-
+Installation
-    python setup.py develop
+-----------------------
-
+
-Usage examples
+Install the plugin with::
----------------------
+
-
+    easy_install pytest-xdist
-Speed up test runs by sending tests to multiple CPUs
+
-+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+    # or
-
+
-To send tests to multiple CPUs, type::
+    pip install pytest-xdist
-
+
-    py.test -n NUM
+or use the package in develope/in-place mode with
-
+a checkout of the `pytest-xdist repository`_ ::
-Especially for longer running tests or tests requiring
+
-a lot of IO this can lead to considerable speed ups.
+    python setup.py develop
-
+
-
+Usage examples
-Running tests in a Python subprocess
+---------------------
-+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
-
+.. _parallelization:
-To instantiate a python2.4 sub process and send tests to it, you may type::
+
-
+Speed up test runs by sending tests to multiple CPUs
-    py.test -d --tx popen//python=python2.4
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-
+
-This will start a subprocess which is run with the "python2.4"
+To send tests to multiple CPUs, type::
-Python interpreter, found in your system binary lookup path.
+
-
+    py.test -n NUM
-If you prefix the --tx option value like this::
+
-
+Especially for longer running tests or tests requiring
-    --tx 3*popen//python=python2.4
+a lot of IO this can lead to considerable speed ups. This option can
-
+also be set to ``auto`` for automatic detection of the number of CPUs.
-then three subprocesses would be created and tests
+
-will be load-balanced across these three processes.
+If a test crashes the interpreter, pytest-xdist will automatically restart
-
+that slave and report the failure as usual. You can use the
-
+``--max-slave-restart`` option to limit the number of slaves that can
-Sending tests to remote SSH accounts
+be restarted, or disable restarting altogether using ``--max-slave-restart=0``.
-+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
-
+
-Suppose you have a package ``mypkg`` which contains some
+Running tests in a Python subprocess
-tests that you can successfully run locally. And you
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-have a ssh-reachable machine ``myhost``.  Then
+
-you can ad-hoc distribute your tests by typing::
+To instantiate a python2.5 sub process and send tests to it, you may type::
-
+
-    py.test -d --tx ssh=myhostpopen --rsyncdir mypkg mypkg
+    py.test -d --tx popen//python=python2.5
-
+
-This will synchronize your ``mypkg`` package directory
+This will start a subprocess which is run with the "python2.5"
-to an remote ssh account and then locally collect tests
+Python interpreter, found in your system binary lookup path.
-and send them to remote places for execution.
+
-
+If you prefix the --tx option value like this::
-You can specify multiple ``--rsyncdir`` directories
+
-to be sent to the remote side.
+    --tx 3*popen//python=python2.5
-
+
-**NOTE:** For py.test to collect and send tests correctly
+then three subprocesses would be created and tests
-you not only need to make sure all code and tests
+will be load-balanced across these three processes.
-directories are rsynced, but that any test (sub) directory
+
-also has an ``__init__.py`` file because internally
+.. _boxed:
-py.test references tests as a fully qualified python
+
-module path.  **You will otherwise get strange errors**
+Running tests in a boxed subprocess
-during setup of the remote side.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-
+
-Sending tests to remote Socket Servers
+If you have tests involving C or C++ libraries you might have to deal
-+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+with tests crashing the process.  For this case you may use the boxing
-
+options::
-Download the single-module `socketserver.py`_ Python program
+
-and run it like this::
+    py.test --boxed
-
+
-    python socketserver.py
+which will run each test in a subprocess and will report if a test
-
+crashed the process.  You can also combine this option with
-It will tell you that it starts listening on the default
+running multiple processes to speed up the test run and use your CPU cores::
-port.  You can now on your home machine specify this
+
-new socket host with something like this::
+    py.test -n3 --boxed
-
+
-    py.test -d --tx socket=192.168.1.102:8888 --rsyncdir mypkg mypkg
+this would run 3 testing subprocesses in parallel which each
-
+create new boxed subprocesses for each test.
-
+
-.. _`atonce`:
+
-
+.. _`remote machines`:
-Running tests on many platforms at once
+
-+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+Sending tests to remote SSH accounts
-
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-The basic command to run tests on multiple platforms is::
+
-
+Suppose you have a package ``mypkg`` which contains some
-    py.test --dist=each --tx=spec1 --tx=spec2
+tests that you can successfully run locally. And you
-
+have a ssh-reachable machine ``myhost``.  Then
-If you specify a windows host, an OSX host and a Linux
+you can ad-hoc distribute your tests by typing::
-environment this command will send each tests to all
+
-platforms - and report back failures from all platforms
+    py.test -d --tx ssh=myhostpopen --rsyncdir mypkg mypkg
-at once.   The specifications strings use the `xspec syntax`_.
+
-
+This will synchronize your :code:`mypkg` package directory
-.. _`xspec syntax`: http://codespeak.net/execnet/trunk/basics.html#xspec
+to an remote ssh account and then locally collect tests
-
+and send them to remote places for execution.
-.. _`socketserver.py`: http://bitbucket.org/hpk42/execnet/raw/2af991418160/execnet/script/socketserver.py
+
-
+You can specify multiple :code:`--rsyncdir` directories
-.. _`execnet`: http://codespeak.net/execnet
+to be sent to the remote side.
-
+
-Specifying test exec environments in an ini file
+.. note::
-+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
-
+  For py.test to collect and send tests correctly
-pytest (since version 2.0) supports ini-style cofiguration.
+  you not only need to make sure all code and tests
-You can for example make running with three subprocesses
+  directories are rsynced, but that any test (sub) directory
-your default like this::
+  also has an :code:`__init__.py` file because internally
-
+  py.test references tests as a fully qualified python
-    [pytest]
+  module path.  **You will otherwise get strange errors**
-    addopts = -n3
+  during setup of the remote side.
-
+
-You can also add default environments like this::
+
-
+You can specify multiple :code:`--rsyncignore` glob patterns
-    [pytest]
+to be ignored when file are sent to the remote side.
-    addopts = --tx ssh=myhost//python=python2.5 --tx ssh=myhost//python=python2.6
+There are also internal ignores: :code:`.*, *.pyc, *.pyo, *~`
-
+Those you cannot override using rsyncignore command-line or
-and then just type::
+ini-file option(s).
-
+
-    py.test --dist=each
+
-
+Sending tests to remote Socket Servers
-to run tests in each of the environments.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-
+
-Specifying "rsync" dirs in an ini-file
+Download the single-module `socketserver.py`_ Python program
-+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+and run it like this::
-
+
-In a ``tox.ini`` or ``setup.cfg`` file in your root project directory
+    python socketserver.py
-you may specify directories to include or to exclude in synchronisation::
+
-
+It will tell you that it starts listening on the default
-    [pytest]
+port.  You can now on your home machine specify this
-    rsyncdirs = . mypkg helperpkg
+new socket host with something like this::
-    rsyncignore = .hg
+
-
+    py.test -d --tx socket=192.168.1.102:8888 --rsyncdir mypkg mypkg
-These directory specifications are relative to the directory
+
-where the configuration file was found.
+
-
+.. _`atonce`:
-.. _`pytest-xdist`: http://pypi.python.org/pypi/pytest-xdist
+.. _`Multi-Platform`:
-.. _`pytest-xdist repository`: http://bitbucket.org/hpk42/pytest-xdist
+
-.. _`pytest`: http://pytest.org
+
-
+Running tests on many platforms at once
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+The basic command to run tests on multiple platforms is::
+
+    py.test --dist=each --tx=spec1 --tx=spec2
+
+If you specify a windows host, an OSX host and a Linux
+environment this command will send each tests to all
+platforms - and report back failures from all platforms
+at once.   The specifications strings use the `xspec syntax`_.
+
+.. _`xspec syntax`: http://codespeak.net/execnet/basics.html#xspec
+
+.. _`socketserver.py`: http://bitbucket.org/hpk42/execnet/raw/2af991418160/execnet/script/socketserver.py
+
+.. _`execnet`: http://codespeak.net/execnet
+
+Specifying test exec environments in an ini file
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+pytest (since version 2.0) supports ini-style cofiguration.
+You can for example make running with three subprocesses
+your default like this::
+
+    [pytest]
+    addopts = -n3
+
+You can also add default environments like this::
+
+    [pytest]
+    addopts = --tx ssh=myhost//python=python2.5 --tx ssh=myhost//python=python2.6
+
+and then just type::
+
+    py.test --dist=each
+
+to run tests in each of the environments.
+
+Specifying "rsync" dirs in an ini-file
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+In a ``tox.ini`` or ``setup.cfg`` file in your root project directory
+you may specify directories to include or to exclude in synchronisation::
+
+    [pytest]
+    rsyncdirs = . mypkg helperpkg
+    rsyncignore = .hg
+
+These directory specifications are relative to the directory
+where the configuration file was found.
+
+.. _`pytest-xdist`: http://pypi.python.org/pypi/pytest-xdist
+.. _`pytest-xdist repository`: https://github.com/pytest-dev/pytest-xdist
+.. _`pytest`: http://pytest.org
+
+Issue and Bug Tracker
+------------------------
+
+Please use the `pytest issue tracker <https://github.com/pytest-dev/pytest/issues>`_
+for reporting bugs in this plugin.

appveyor.yml

@@ -0,0 +1,17 @@
+environment:
+  matrix:
+    - PYTHON: "C:\\Python35"
+      TESTENV: "py35"
+
+    - PYTHON: "C:\\Python27"
+      TESTENV: "py27"
+
+install:
+  - "SET PATH=%PYTHON%;%PYTHON%\\Scripts;%PATH%"
+  - pip install tox setuptools_scm"
+
+build: false  # Not a C# project, build stuff at the test step instead.
+
+test_script:
+  # Build the compiled extension and run the project tests
+  - tox -e %TESTENV%-pytest27,%TESTENV%-pytest28,readme,flakes

example/boxed.txt

@@ -0,0 +1,62 @@
+
+
+If your testing involves C or C++ libraries you might have to deal
+with crashing processes.  The xdist-plugin provides the ``--boxed`` option
+to run each test in a controlled subprocess.  Here is a basic example::
+
+    # content of test_module.py
+
+    import pytest
+    import os
+    import time
+
+    # run test function 50 times with different argument
+    @pytest.mark.parametrize("arg", range(50))
+    def test_func(arg):
+        time.sleep(0.05) # each tests takes a while
+        if arg % 19 == 0: 
+            os.kill(os.getpid(), 15)
+
+If you run this with::
+
+    $ py.test --boxed
+    =========================== test session starts ============================
+    platform linux2 -- Python 2.7.3 -- pytest-2.3.0.dev8
+    plugins: xdist, bugzilla, cache, oejskit, cli, pep8, cov
+    collecting ... collected 50 items
+    
+    test_module.py f..................f..................f...........
+    
+    ================================= FAILURES =================================
+    _______________________________ test_func[0] _______________________________
+    /home/hpk/tmp/doc-exec-420/test_module.py:6: running the test CRASHED with signal 15
+    ______________________________ test_func[19] _______________________________
+    /home/hpk/tmp/doc-exec-420/test_module.py:6: running the test CRASHED with signal 15
+    ______________________________ test_func[38] _______________________________
+    /home/hpk/tmp/doc-exec-420/test_module.py:6: running the test CRASHED with signal 15
+    =================== 3 failed, 47 passed in 3.41 seconds ====================
+
+You'll see that a couple of tests are reported as crashing, indicated
+by lower-case ``f`` and the respective failure summary. You can also use
+the xdist-provided parallelization feature to speed up your testing::
+
+    $ py.test --boxed -n3
+    =========================== test session starts ============================
+    platform linux2 -- Python 2.7.3 -- pytest-2.3.0.dev8
+    plugins: xdist, bugzilla, cache, oejskit, cli, pep8, cov
+    gw0 I / gw1 I / gw2 I
+    gw0 [50] / gw1 [50] / gw2 [50]
+    
+    scheduling tests via LoadScheduling
+    ..f...............f..................f............
+    ================================= FAILURES =================================
+    _______________________________ test_func[0] _______________________________
+    [gw0] linux2 -- Python 2.7.3 /home/hpk/venv/1/bin/python
+    /home/hpk/tmp/doc-exec-420/test_module.py:6: running the test CRASHED with signal 15
+    ______________________________ test_func[19] _______________________________
+    [gw2] linux2 -- Python 2.7.3 /home/hpk/venv/1/bin/python
+    /home/hpk/tmp/doc-exec-420/test_module.py:6: running the test CRASHED with signal 15
+    ______________________________ test_func[38] _______________________________
+    [gw2] linux2 -- Python 2.7.3 /home/hpk/venv/1/bin/python
+    /home/hpk/tmp/doc-exec-420/test_module.py:6: running the test CRASHED with signal 15
+    =================== 3 failed, 47 passed in 2.03 seconds ====================

setup.cfg

@@ -0,0 +1,2 @@
+[bdist_wheel]
+universal = 1

setup.py

@@ -2,29 +2,37 @@ from setuptools import setup
 
 setup(
     name="pytest-xdist",
-    version='1.6',
+    use_scm_version={'write_to': 'xdist/_version.py'},
-    description='py.test xdist plugin for distributed testing and loop-on-failing modes',
+    description='py.test xdist plugin for distributed testing'
-    long_description=open('README.txt').read(),
+                ' and loop-on-failing modes',
-    license='GPLv2 or later',
+    long_description=open('README.rst').read(),
+    license='MIT',
     author='holger krekel and contributors',
-    author_email='py-dev@codespeak.net,holger@merlinux.eu',
+    author_email='pytest-dev@python.org,holger@merlinux.eu',
-    url='http://bitbucket.org/hpk42/pytest-xdist',
+    url='https://github.com/pytest-dev/pytest-xdist',
     platforms=['linux', 'osx', 'win32'],
-    packages = ['xdist'],
+    packages=['xdist'],
-    entry_points = {'pytest11': ['xdist = xdist.plugin'],},
+    entry_points={
+        'pytest11': [
+            'xdist = xdist.plugin',
+            'xdist.looponfail = xdist.looponfail',
+            'xdist.boxed = xdist.boxed',
+        ],
+    },
     zip_safe=False,
-    install_requires = ['execnet>=1.0.8', 'pytest>2.0.2'],
+    install_requires=['execnet>=1.1', 'pytest>=2.4.2', 'py>=1.4.22'],
+    setup_requires=['setuptools_scm'],
     classifiers=[
-    'Development Status :: 5 - Production/Stable',
+        'Development Status :: 5 - Production/Stable',
-    'Intended Audience :: Developers',
+        'Intended Audience :: Developers',
-    'License :: OSI Approved :: GNU General Public License (GPL)',
+        'License :: OSI Approved :: MIT License',
-    'Operating System :: POSIX',
+        'Operating System :: POSIX',
-    'Operating System :: Microsoft :: Windows',
+        'Operating System :: Microsoft :: Windows',
-    'Operating System :: MacOS :: MacOS X',
+        'Operating System :: MacOS :: MacOS X',
-    'Topic :: Software Development :: Testing',
+        'Topic :: Software Development :: Testing',
-    'Topic :: Software Development :: Quality Assurance',
+        'Topic :: Software Development :: Quality Assurance',
-    'Topic :: Utilities',
+        'Topic :: Utilities',
-    'Programming Language :: Python',
+        'Programming Language :: Python',
-    'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3',
     ],
-)
+)

testing/acceptance_test.py

@@ -1,5 +1,6 @@
 import py
-import sys
+import pytest
+
 
 class TestDistribution:
     def test_n1_pass(self, testdir):
@@ -9,9 +10,7 @@ class TestDistribution:
         """)
         result = testdir.runpytest(p1, "-n1")
         assert result.ret == 0
-        result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines(["*1 passed*", ])
-            "*1 passed*",
-        ])
 
     def test_n1_fail(self, testdir):
         p1 = testdir.makepyfile("""
@@ -20,10 +19,32 @@ class TestDistribution:
         """)
         result = testdir.runpytest(p1, "-n1")
         assert result.ret == 1
+        result.stdout.fnmatch_lines(["*1 failed*", ])
+
+    def test_n1_import_error(self, testdir):
+        p1 = testdir.makepyfile("""
+            import __import_of_missing_module
+            def test_import():
+                pass
+        """)
+        result = testdir.runpytest(p1, "-n1")
+        assert result.ret == 1
         result.stdout.fnmatch_lines([
-            "*1 failed*",
+            "E   ImportError: *__import_of_missing_module*",
         ])
 
+    def test_n2_import_error(self, testdir):
+        """Check that we don't report the same import error multiple times
+        in distributed mode."""
+        p1 = testdir.makepyfile("""
+            import __import_of_missing_module
+            def test_import():
+                pass
+        """)
+        result1 = testdir.runpytest(p1, "-n2")
+        result2 = testdir.runpytest(p1, "-n1")
+        assert len(result1.stdout.lines) == len(result2.stdout.lines)
+
     def test_n1_skip(self, testdir):
         p1 = testdir.makepyfile("""
             def test_skip():
@@ -32,8 +53,18 @@ class TestDistribution:
         """)
         result = testdir.runpytest(p1, "-n1")
         assert result.ret == 0
+        result.stdout.fnmatch_lines(["*1 skipped*", ])
+
+    def test_manytests_to_one_import_error(self, testdir):
+        p1 = testdir.makepyfile("""
+            import __import_of_missing_module
+            def test_import():
+                pass
+        """)
+        result = testdir.runpytest(p1, '--tx=popen', '--tx=popen')
+        assert result.ret == 1
         result.stdout.fnmatch_lines([
-            "*1 skipped*",
+            "E   ImportError: *__import_of_missing_module*",
         ])
 
     def test_manytests_to_one_popen(self, testdir):
@@ -47,8 +78,7 @@ class TestDistribution:
                     pass
                 def test_skip():
                     py.test.skip("hello")
-            """,
+            """, )
-        )
         result = testdir.runpytest(p1, "-v", '-d', '--tx=popen', '--tx=popen')
         result.stdout.fnmatch_lines([
             "*1*Python*",
@@ -76,11 +106,9 @@ class TestDistribution:
                 import py
                 assert tmpdir.relto(py.path.local(%r)), tmpdir
         """ % str(testdir.tmpdir))
-        result = testdir.runpytest(p1, "-n1")
+        result = testdir.runpytest_subprocess(p1, "-n1")
         assert result.ret == 0
-        result.stdout.fnmatch_lines([
+        result.stdout.fnmatch_lines(["*1 passed*", ])
-            "*1 passed*",
-        ])
 
     def test_dist_ini_specified(self, testdir):
         p1 = testdir.makepyfile("""
@@ -93,8 +121,7 @@ class TestDistribution:
                     pass
                 def test_skip():
                     py.test.skip("hello")
-            """,
+            """, )
-        )
         testdir.makeini("""
             [pytest]
             addopts = --tx=3*popen
@@ -126,13 +153,10 @@ class TestDistribution:
                     import os
                     time.sleep(0.5)
                     os.kill(os.getpid(), 15)
-            """
+            """)
-        )
         result = testdir.runpytest(p1, "-v", '-d', '-n1')
         result.stdout.fnmatch_lines([
-            "*Python*",
+            "*Python*", "*PASS**test_ok*", "*node*down*",
-            "*PASS**test_ok*",
-            "*node*down*",
             "*3 failed, 1 passed, 1 skipped*"
         ])
         assert result.ret == 1
@@ -145,19 +169,19 @@ class TestDistribution:
         p = subdir.join("test_one.py")
         p.write("def test_5():\n  assert not __file__.startswith(%r)" % str(p))
         result = testdir.runpytest("-v", "-d",
-            "--rsyncdir=%(subdir)s" % locals(),
+                                   "--rsyncdir=%(subdir)s" % locals(),
-            "--tx=popen//chdir=%(dest)s" % locals(), p)
+                                   "--tx=popen//chdir=%(dest)s" % locals(), p)
         assert result.ret == 0
         result.stdout.fnmatch_lines([
             "*0* *cwd*",
-            #"RSyncStart: [G1]",
+            # "RSyncStart: [G1]",
-            #"RSyncFinished: [G1]",
+            # "RSyncFinished: [G1]",
             "*1 passed*"
         ])
         assert dest.join(subdir.basename).check(dir=1)
 
     def test_data_exchange(self, testdir):
-        c1 = testdir.makeconftest("""
+        testdir.makeconftest("""
             # This hook only called on master.
             def pytest_configure_node(node):
                 node.slaveinput['a'] = 42
@@ -184,14 +208,13 @@ class TestDistribution:
         p1 = testdir.makepyfile("def test_func(): pass")
         result = testdir.runpytest("-v", p1, '-d', '--tx=popen')
         result.stdout.fnmatch_lines([
-            "*0*Python*",
+            "*0*Python*", "*calculated result is 49*", "*1 passed*"
-            "*calculated result is 49*",
-            "*1 passed*"
         ])
         assert result.ret == 0
 
     def test_keyboardinterrupt_hooks_issue79(self, testdir):
-        testdir.makepyfile(__init__="", test_one="""
+        testdir.makepyfile(__init__="",
+                           test_one="""
             def test_hello():
                 raise KeyboardInterrupt()
         """)
@@ -206,7 +229,7 @@ class TestDistribution:
                 print ("s2call-finished")
         """)
         args = ["-n1", "--debug"]
-        result = testdir.runpytest(*args)
+        result = testdir.runpytest_subprocess(*args)
         s = result.stdout.str()
         assert result.ret == 2
         assert 's2call' in s
@@ -214,18 +237,19 @@ class TestDistribution:
 
     def test_keyboard_interrupt_dist(self, testdir):
         # xxx could be refined to check for return code
-        p = testdir.makepyfile("""
+        testdir.makepyfile("""
             def test_sleep():
                 import time
                 time.sleep(10)
         """)
-        child = testdir.spawn_pytest("-n1")
+        child = testdir.spawn_pytest("-n1 -v")
-        child.expect(".*test session starts.*")
+        child.expect(".*test_sleep.*")
-        child.kill(2) # keyboard interrupt
+        child.kill(2)  # keyboard interrupt
         child.expect(".*KeyboardInterrupt.*")
-        #child.expect(".*seconds.*")
+        # child.expect(".*seconds.*")
         child.close()
-        #assert ret == 2
+        # assert ret == 2
+
 
 class TestDistEach:
     def test_simple(self, testdir):
@@ -233,11 +257,13 @@ class TestDistEach:
             def test_hello():
                 pass
         """)
-        result = testdir.runpytest("--debug", "--dist=each", "--tx=2*popen")
+        result = testdir.runpytest_subprocess("--debug", "--dist=each",
+                                              "--tx=2*popen")
         assert not result.ret
         result.stdout.fnmatch_lines(["*2 pass*"])
 
-    @py.test.mark.xfail(run=False,
+    @py.test.mark.xfail(
+        run=False,
         reason="other python versions might not have py.test installed")
     def test_simple_diffoutput(self, testdir):
         interpreters = []
@@ -247,7 +273,8 @@ class TestDistEach:
                 py.test.skip("%s not found" % name)
             interpreters.append(interp)
 
-        testdir.makepyfile(__init__="", test_one="""
+        testdir.makepyfile(__init__="",
+                           test_one="""
             import sys
             def test_hello():
                 print("%s...%s" % sys.version_info[:2])
@@ -261,9 +288,10 @@ class TestDistEach:
         assert "2...5" in s
         assert "2...6" in s
 
+
 class TestTerminalReporting:
     def test_pass_skip_fail(self, testdir):
-        p = testdir.makepyfile("""
+        testdir.makepyfile("""
             import py
             def test_ok():
                 pass
@@ -274,9 +302,9 @@ class TestTerminalReporting:
         """)
         result = testdir.runpytest("-n1", "-v")
         result.stdout.fnmatch_lines_random([
-            "*PASS*test_pass_skip_fail.py:2: *test_ok*",
+            "*PASS*test_pass_skip_fail.py*test_ok*",
-            "*SKIP*test_pass_skip_fail.py:4: *test_skip*",
+            "*SKIP*test_pass_skip_fail.py*test_skip*",
-            "*FAIL*test_pass_skip_fail.py:6: *test_func*",
+            "*FAIL*test_pass_skip_fail.py*test_func*",
         ])
         result.stdout.fnmatch_lines([
             "*def test_func():",
@@ -285,19 +313,20 @@ class TestTerminalReporting:
         ])
 
     def test_fail_platinfo(self, testdir):
-        p = testdir.makepyfile("""
+        testdir.makepyfile("""
             def test_func():
                 assert 0
         """)
         result = testdir.runpytest("-n1", "-v")
         result.stdout.fnmatch_lines([
-            "*FAIL*test_fail_platinfo.py:1: *test_func*",
+            "*FAIL*test_fail_platinfo.py*test_func*",
             "*0*Python*",
             "*def test_func():",
             ">       assert 0",
             "E       assert 0",
         ])
 
+
 def test_teardownfails_one_function(testdir):
     p = testdir.makepyfile("""
         def test_func():
@@ -307,26 +336,24 @@ def test_teardownfails_one_function(testdir):
     """)
     result = testdir.runpytest(p, '-n1', '--tx=popen')
     result.stdout.fnmatch_lines([
-        "*def teardown_function(function):*",
+        "*def teardown_function(function):*", "*1 passed*1 error*"
-        "*1 passed*1 error*"
     ])
 
+
 @py.test.mark.xfail
 def test_terminate_on_hangingnode(testdir):
     p = testdir.makeconftest("""
-        def pytest__teardown_final(session):
+        def pytest_sessionfinish(session):
             if session.nodeid == "my": # running on slave
                 import time
                 time.sleep(3)
     """)
     result = testdir.runpytest(p, '--dist=each', '--tx=popen//id=my')
     assert result.duration < 2.0
-    result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines(["*killed*my*", ])
-        "*killed*my*",
-    ])
-
 
 
+@pytest.mark.xfail(reason="works if run outside test suite", run=False)
 def test_session_hooks(testdir):
     testdir.makeconftest("""
         import sys
@@ -350,16 +377,38 @@ def test_session_hooks(testdir):
             assert hasattr(sys, 'pytestsessionhooks')
     """)
     result = testdir.runpytest(p, "--dist=each", "--tx=popen")
-    result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines(["*ValueError*", "*1 passed*", ])
-        "*ValueError*",
-        "*1 passed*",
-    ])
     assert not result.ret
     d = result.parseoutcomes()
     assert d['passed'] == 1
     assert testdir.tmpdir.join("slave").check()
     assert testdir.tmpdir.join("master").check()
 
+
+def test_session_testscollected(testdir):
+    """
+    Make sure master node is updating the session object with the number
+    of tests collected from the slaves.
+    """
+    testdir.makepyfile(test_foo="""
+        import pytest
+        @pytest.mark.parametrize('i', range(3))
+        def test_ok(i):
+            pass
+    """)
+    testdir.makeconftest("""
+        def pytest_sessionfinish(session):
+            collected = getattr(session, 'testscollected', None)
+            with open('testscollected', 'w') as f:
+                f.write('collected = %s' % collected)
+    """)
+    result = testdir.inline_run("-n1")
+    result.assertoutcome(passed=3)
+    collected_file = testdir.tmpdir.join('testscollected')
+    assert collected_file.isfile()
+    assert collected_file.read() == 'collected = 3'
+
+
 def test_funcarg_teardown_failure(testdir):
     p = testdir.makepyfile("""
         def pytest_funcarg__myarg(request):
@@ -370,13 +419,11 @@ def test_funcarg_teardown_failure(testdir):
         def test_hello(myarg):
             pass
     """)
-    result = testdir.runpytest("--debug", p) # , "-n1")
+    result = testdir.runpytest_subprocess("--debug", p)  # , "-n1")
-    result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines(["*ValueError*42*", "*1 passed*1 error*", ])
-        "*ValueError*42*",
-        "*1 passed*1 error*",
-    ])
     assert result.ret
 
+
 def test_crashing_item(testdir):
     p = testdir.makepyfile("""
         import py
@@ -388,12 +435,10 @@ def test_crashing_item(testdir):
     """)
     result = testdir.runpytest("-n2", p)
     result.stdout.fnmatch_lines([
-        "*crashed*test_crash*",
+        "*crashed*test_crash*", "*1 failed*1 passed*"
-        "*1 failed*1 passed*"
     ])
 
 
-
 def test_skipping(testdir):
     p = testdir.makepyfile("""
         import pytest
@@ -402,10 +447,8 @@ def test_skipping(testdir):
     """)
     result = testdir.runpytest("-n1", '-rs', p)
     assert result.ret == 0
-    result.stdout.fnmatch_lines([
+    result.stdout.fnmatch_lines(["*hello*", "*1 skipped*"])
-        "*hello*",
+
-        "*1 skipped*"
-    ])
 
 def test_issue34_pluginloading_in_subprocess(testdir):
     testdir.tmpdir.join("plugin123.py").write(py.code.Source("""
@@ -417,8 +460,163 @@ def test_issue34_pluginloading_in_subprocess(testdir):
         def test_hello():
             assert pytest.sample_variable == "testing"
     """)
-    result = testdir.runpytest("-n1", "-p", "plugin123")
+    result = testdir.runpytest_subprocess("-n1", "-p", "plugin123")
     assert result.ret == 0
+    result.stdout.fnmatch_lines(["*1 passed*", ])
+
+
+def test_fixture_scope_caching_issue503(testdir):
+    p1 = testdir.makepyfile("""
+            import pytest
+
+            @pytest.fixture(scope='session')
+            def fix():
+                assert fix.counter == 0, \
+                    'session fixture was invoked multiple times'
+                fix.counter += 1
+            fix.counter = 0
+
+            def test_a(fix):
+                pass
+
+            def test_b(fix):
+                pass
+    """)
+    result = testdir.runpytest(p1, '-v', '-n1')
+    assert result.ret == 0
+    result.stdout.fnmatch_lines(["*2 passed*", ])
+
+
+def test_issue_594_random_parametrize(testdir):
+    """
+    Make sure that tests that are randomly parametrized display an appropriate
+    error message, instead of silently skipping the entire test run.
+    """
+    p1 = testdir.makepyfile("""
+        import pytest
+        import random
+
+        xs = list(range(10))
+        random.shuffle(xs)
+        @pytest.mark.parametrize('x', xs)
+        def test_foo(x):
+            assert 1
+    """)
+    result = testdir.runpytest(p1, '-v', '-n4')
+    assert result.ret == 1
     result.stdout.fnmatch_lines([
-        "*1 passed*",
+        "Different tests were collected between gw* and gw*",
     ])
+
+
+def test_tmpdir_disabled(testdir):
+    """Test xdist doesn't break if internal tmpdir plugin is disabled (#22).
+    """
+    p1 = testdir.makepyfile("""
+        def test_ok():
+            pass
+    """)
+    result = testdir.runpytest(p1, "-n1", '-p', 'no:tmpdir')
+    assert result.ret == 0
+    result.stdout.fnmatch_lines("*1 passed*")
+
+
+@pytest.mark.parametrize('plugin', ['xdist.looponfail', 'xdist.boxed'])
+def test_sub_plugins_disabled(testdir, plugin):
+    """Test that xdist doesn't break if we disable any of its sub-plugins. (#32)
+    """
+    p1 = testdir.makepyfile("""
+        def test_ok():
+            pass
+    """)
+    result = testdir.runpytest(p1, "-n1", '-p', 'no:%s' % plugin)
+    assert result.ret == 0
+    result.stdout.fnmatch_lines("*1 passed*")
+
+
+class TestNodeFailure:
+    def test_load_single(self, testdir):
+        f = testdir.makepyfile("""
+            import os
+            def test_a(): os._exit(1)
+            def test_b(): pass
+        """)
+        res = testdir.runpytest(f, '-n1')
+        res.stdout.fnmatch_lines([
+            "*Replacing crashed slave*",
+            "*Slave*crashed while running*",
+            "*1 failed*1 passed*",
+        ])
+
+    def test_load_multiple(self, testdir):
+        f = testdir.makepyfile("""
+            import os
+            def test_a(): pass
+            def test_b(): os._exit(1)
+            def test_c(): pass
+            def test_d(): pass
+        """)
+        res = testdir.runpytest(f, '-n2')
+        res.stdout.fnmatch_lines([
+            "*Replacing crashed slave*",
+            "*Slave*crashed while running*",
+            "*1 failed*3 passed*",
+        ])
+
+    def test_each_single(self, testdir):
+        f = testdir.makepyfile("""
+            import os
+            def test_a(): os._exit(1)
+            def test_b(): pass
+        """)
+        res = testdir.runpytest(f, '--dist=each', '--tx=popen')
+        res.stdout.fnmatch_lines([
+            "*Replacing crashed slave*",
+            "*Slave*crashed while running*",
+            "*1 failed*1 passed*",
+        ])
+
+    @pytest.mark.xfail(reason='#20: xdist race condition on node restart')
+    def test_each_multiple(self, testdir):
+        f = testdir.makepyfile("""
+            import os
+            def test_a(): os._exit(1)
+            def test_b(): pass
+        """)
+        res = testdir.runpytest(f, '--dist=each', '--tx=2*popen')
+        res.stdout.fnmatch_lines([
+            "*Replacing crashed slave*",
+            "*Slave*crashed while running*",
+            "*2 failed*2 passed*",
+        ])
+
+    def test_max_slave_restart(self, testdir):
+        f = testdir.makepyfile("""
+            import os
+            def test_a(): pass
+            def test_b(): os._exit(1)
+            def test_c(): os._exit(1)
+            def test_d(): pass
+        """)
+        res = testdir.runpytest(f, '-n4', '--max-slave-restart=1')
+        res.stdout.fnmatch_lines([
+            "*Replacing crashed slave*",
+            "*Maximum crashed slaves reached: 1*",
+            "*Slave*crashed while running*",
+            "*Slave*crashed while running*",
+            "*2 failed*2 passed*",
+        ])
+
+    def test_disable_restart(self, testdir):
+        f = testdir.makepyfile("""
+            import os
+            def test_a(): pass
+            def test_b(): os._exit(1)
+            def test_c(): pass
+        """)
+        res = testdir.runpytest(f, '-n4', '--max-slave-restart=0')
+        res.stdout.fnmatch_lines([
+            "*Slave restarting disabled*",
+            "*Slave*crashed while running*",
+            "*1 failed*2 passed*",
+        ])

testing/conftest.py

@@ -1,25 +1,58 @@
 import py
+import pytest
 import execnet
 
+
+@pytest.fixture(scope="session", autouse=True)
+def _ensure_imports():
+    # we import some modules because pytest-2.8's testdir fixture
+    # will unload all modules after each test and this cause
+    # (unknown) problems with execnet.Group()
+    execnet.Group
+    execnet.makegateway
+
+
 pytest_plugins = "pytester"
 
-#rsyncdirs = ['.', '../xdist', py.path.local(execnet.__file__).dirpath()]
+# rsyncdirs = ['.', '../xdist', py.path.local(execnet.__file__).dirpath()]
+
+
+@pytest.fixture(autouse=True)
+def _divert_atexit(request, monkeypatch):
+    import atexit
+    l = []
+
+    def finish():
+        while l:
+            l.pop()()
+
+    monkeypatch.setattr(atexit, "register", l.append)
+    request.addfinalizer(finish)
+
 
 def pytest_addoption(parser):
     parser.addoption('--gx',
-       action="append", dest="gspecs", default=None,
+                     action="append",
-       help=("add a global test environment, XSpec-syntax. "))
+                     dest="gspecs",
+                     help=("add a global test environment, XSpec-syntax. "))
+
 
 def pytest_funcarg__specssh(request):
     return getspecssh(request.config)
-def getgspecs(config):
+
-    return [execnet.XSpec(spec)
+
-                for spec in config.getvalueorskip("gspecs")]
+@pytest.fixture
+def testdir(testdir):
+    # pytest before 2.8 did not have a runpytest_subprocess
+    if not hasattr(testdir, "runpytest_subprocess"):
+        testdir.runpytest_subprocess = testdir.runpytest
+    return testdir
+
 
 # configuration information for tests
 def getgspecs(config):
-    return [execnet.XSpec(spec)
+    return [execnet.XSpec(spec) for spec in config.getvalueorskip("gspecs")]
-                for spec in config.getvalueorskip("gspecs")]
+
 
 def getspecssh(config):
     xspecs = getgspecs(config)
@@ -30,10 +63,10 @@ def getspecssh(config):
             return str(spec)
     py.test.skip("need '--gx ssh=...'")
 
+
 def getsocketspec(config):
     xspecs = getgspecs(config)
     for spec in xspecs:
         if spec.socket:
             return spec
     py.test.skip("need '--gx socket=...'")
-

testing/test_boxed.py

@@ -1,6 +1,11 @@
-import py
+import pytest
+import os
 
-@py.test.mark.skipif("not hasattr(os, 'fork')")
+needsfork = pytest.mark.skipif(not hasattr(os, "fork"),
+                               reason="os.fork required")
+
+
+@needsfork
 def test_functional_boxed(testdir):
     p1 = testdir.makepyfile("""
         import os
@@ -13,16 +18,41 @@ def test_functional_boxed(testdir):
         "*1 failed*"
     ])
 
+
+@needsfork
+@pytest.mark.parametrize("capmode", [
+    "no",
+    pytest.mark.xfail("sys", reason="capture cleanup needed"),
+    pytest.mark.xfail("fd", reason="capture cleanup needed")])
+def test_functional_boxed_capturing(testdir, capmode):
+    p1 = testdir.makepyfile("""
+        import os
+        import sys
+        def test_function():
+            sys.stdout.write("hello\\n")
+            sys.stderr.write("world\\n")
+            os.kill(os.getpid(), 15)
+    """)
+    result = testdir.runpytest(p1, "--boxed", "--capture=%s" % capmode)
+    result.stdout.fnmatch_lines("""
+        *CRASHED*
+        *stdout*
+        hello
+        *stderr*
+        world
+        *1 failed*
+    """)
+
+
 class TestOptionEffects:
     def test_boxed_option_default(self, testdir):
         tmpdir = testdir.tmpdir.ensure("subdir", dir=1)
-        config = testdir.reparseconfig()
+        config = testdir.parseconfig()
         assert not config.option.boxed
-        py.test.importorskip("execnet")
+        pytest.importorskip("execnet")
-        config = testdir.reparseconfig(['-d', tmpdir])
+        config = testdir.parseconfig('-d', tmpdir)
         assert not config.option.boxed
 
     def test_is_not_boxed_by_default(self, testdir):
-        config = testdir.reparseconfig([testdir.tmpdir])
+        config = testdir.parseconfig(testdir.tmpdir)
         assert not config.option.boxed
-

testing/test_dsession.py

@@ -1,37 +1,53 @@
-from xdist.dsession import DSession, LoadScheduling, EachScheduling
+from xdist.dsession import (
-from _pytest import main as outcome
+    DSession, LoadScheduling, EachScheduling, report_collection_diff,
+)
 import py
+import pytest
 import execnet
 
 XSpec = execnet.XSpec
 
+
 def run(item, node, excinfo=None):
     runner = item.config.pluginmanager.getplugin("runner")
-    rep = runner.ItemTestReport(item=item,
+    rep = runner.ItemTestReport(item=item, excinfo=excinfo, when="call")
-        excinfo=excinfo, when="call")
     rep.node = node
     return rep
 
+
+class MockGateway:
+    _count = 0
+
+    def __init__(self):
+        self.id = str(self._count)
+        self._count += 1
+
+
 class MockNode:
     def __init__(self):
         self.sent = []
+        self.gateway = MockGateway()
+        self._shutdown = False
 
-    def send_runtest(self, nodeid):
+    def send_runtest_some(self, indices):
-        self.sent.append(nodeid)
+        self.sent.extend(indices)
 
     def send_runtest_all(self):
         self.sent.append("ALL")
 
-    def sendlist(self, items):
-        self.sent.extend(items)
-
     def shutdown(self):
-        self._shutdown=True
+        self._shutdown = True
+
+    @property
+    def shutting_down(self):
+        return self._shutdown
+
 
 def dumpqueue(queue):
     while queue.qsize():
         print(queue.get())
 
+
 class TestEachScheduling:
     def test_schedule_load_simple(self):
         node1 = MockNode()
@@ -48,12 +64,12 @@ class TestEachScheduling:
         assert sched.node2collection[node1] == collection
         assert sched.node2collection[node2] == collection
         sched.init_distribute()
-        assert not sched.tests_finished()
+        assert sched.tests_finished()
         assert node1.sent == ['ALL']
         assert node2.sent == ['ALL']
-        sched.remove_item(node1, collection[0])
+        sched.remove_item(node1, 0)
-        assert not sched.tests_finished()
+        assert sched.tests_finished()
-        sched.remove_item(node2, collection[0])
+        sched.remove_item(node2, 0)
         assert sched.tests_finished()
 
     def test_schedule_remove_node(self):
@@ -66,19 +82,19 @@ class TestEachScheduling:
         assert sched.collection_is_completed
         assert sched.node2collection[node1] == collection
         sched.init_distribute()
-        assert not sched.tests_finished()
+        assert sched.tests_finished()
         crashitem = sched.remove_node(node1)
         assert crashitem
         assert sched.tests_finished()
         assert not sched.hasnodes()
 
+
 class TestLoadScheduling:
     def test_schedule_load_simple(self):
-        node1 = MockNode()
-        node2 = MockNode()
         sched = LoadScheduling(2)
-        sched.addnode(node1)
+        sched.addnode(MockNode())
-        sched.addnode(node2)
+        sched.addnode(MockNode())
+        node1, node2 = sched.nodes
         collection = ["a.py::test_1", "a.py::test_2"]
         assert not sched.collection_is_completed
         sched.addnode_collection(node1, collection)
@@ -88,38 +104,77 @@ class TestLoadScheduling:
         assert sched.node2collection[node1] == collection
         assert sched.node2collection[node2] == collection
         sched.init_distribute()
-        assert not sched.tests_finished()
+        assert not sched.pending
+        assert sched.tests_finished()
         assert len(node1.sent) == 1
         assert len(node2.sent) == 1
-        x = sorted(node1.sent + node2.sent)
+        assert node1.sent == [0]
-        assert x == collection
+        assert node2.sent == [1]
         sched.remove_item(node1, node1.sent[0])
-        sched.remove_item(node2, node2.sent[0])
         assert sched.tests_finished()
-        assert not sched.pending
 
-    def test_init_distribute_chunksize(self):
+    def test_init_distribute_batch_size(self):
         sched = LoadScheduling(2)
-        node1 = MockNode()
+        sched.addnode(MockNode())
-        node2 = MockNode()
+        sched.addnode(MockNode())
-        sched.addnode(node1)
+        node1, node2 = sched.nodes
-        sched.addnode(node2)
+        col = ["xyz"] * (6)
-        sched.ITEM_CHUNKSIZE = 2
-        col = ["xyz"] * (2*sched.ITEM_CHUNKSIZE +1)
         sched.addnode_collection(node1, col)
         sched.addnode_collection(node2, col)
         sched.init_distribute()
+        # assert not sched.tests_finished()
         sent1 = node1.sent
         sent2 = node2.sent
-        chunkitems = col[:sched.ITEM_CHUNKSIZE]
+        assert sent1 == [0, 2]
-        assert sent1 == chunkitems
+        assert sent2 == [1, 3]
-        assert sent2 == chunkitems
+        assert sched.pending == [4, 5]
         assert sched.node2pending[node1] == sent1
         assert sched.node2pending[node2] == sent2
-        assert len(sched.pending) == 1
+        assert len(sched.pending) == 2
-        for node in (node1, node2):
+        sched.remove_item(node1, 0)
-            for i in range(sched.ITEM_CHUNKSIZE):
+        assert node1.sent == [0, 2, 4]
-                sched.remove_item(node, "xyz")
+        assert sched.pending == [5]
+        assert node2.sent == [1, 3]
+        sched.remove_item(node1, 2)
+        assert node1.sent == [0, 2, 4, 5]
+        assert not sched.pending
+
+    def test_init_distribute_fewer_tests_than_nodes(self):
+        sched = LoadScheduling(2)
+        sched.addnode(MockNode())
+        sched.addnode(MockNode())
+        sched.addnode(MockNode())
+        node1, node2, node3 = sched.nodes
+        col = ["xyz"] * 2
+        sched.addnode_collection(node1, col)
+        sched.addnode_collection(node2, col)
+        sched.init_distribute()
+        # assert not sched.tests_finished()
+        sent1 = node1.sent
+        sent2 = node2.sent
+        sent3 = node3.sent
+        assert sent1 == [0]
+        assert sent2 == [1]
+        assert sent3 == []
+        assert not sched.pending
+
+    def test_init_distribute_fewer_than_two_tests_per_node(self):
+        sched = LoadScheduling(2)
+        sched.addnode(MockNode())
+        sched.addnode(MockNode())
+        sched.addnode(MockNode())
+        node1, node2, node3 = sched.nodes
+        col = ["xyz"] * 5
+        sched.addnode_collection(node1, col)
+        sched.addnode_collection(node2, col)
+        sched.init_distribute()
+        # assert not sched.tests_finished()
+        sent1 = node1.sent
+        sent2 = node2.sent
+        sent3 = node3.sent
+        assert sent1 == [0, 3]
+        assert sent2 == [1, 4]
+        assert sent3 == [2]
         assert not sched.pending
 
     def test_add_remove_node(self):
@@ -134,9 +189,40 @@ class TestLoadScheduling:
         crashitem = sched.remove_node(node)
         assert crashitem == collection[0]
 
+    def test_different_tests_collected(self, testdir):
+        """
+        Test that LoadScheduling is reporting collection errors when
+        different test ids are collected by slaves.
+        """
+
+        class CollectHook(object):
+            """
+            Dummy hook that stores collection reports.
+            """
+
+            def __init__(self):
+                self.reports = []
+
+            def pytest_collectreport(self, report):
+                self.reports.append(report)
+
+        collect_hook = CollectHook()
+        config = testdir.parseconfig()
+        config.pluginmanager.register(collect_hook, "collect_hook")
+        node1 = MockNode()
+        node2 = MockNode()
+        sched = LoadScheduling(2, config=config)
+        sched.addnode(node1)
+        sched.addnode(node2)
+        sched.addnode_collection(node1, ["a.py::test_1"])
+        sched.addnode_collection(node2, ["a.py::test_2"])
+        sched.init_distribute()
+        assert len(collect_hook.reports) == 1
+        rep = collect_hook.reports[0]
+        assert 'Different tests were collected between' in rep.longrepr
+
 
 class TestDistReporter:
-
     @py.test.mark.xfail
     def test_rsync_printing(self, testdir, linecomp):
         config = testdir.parseconfig()
@@ -144,23 +230,66 @@ class TestDistReporter:
         rep = TerminalReporter(config, file=linecomp.stringio)
         config.pluginmanager.register(rep, "terminalreporter")
         dsession = DSession(config)
+
         class gw1:
             id = "X1"
             spec = execnet.XSpec("popen")
+
         class gw2:
             id = "X2"
             spec = execnet.XSpec("popen")
-        #class rinfo:
+        # class rinfo:
         #    version_info = (2, 5, 1, 'final', 0)
         #    executable = "hello"
         #    platform = "xyz"
         #    cwd = "qwe"
 
-        #dsession.pytest_xdist_newgateway(gw1, rinfo)
+        # dsession.pytest_xdist_newgateway(gw1, rinfo)
-        #linecomp.assert_contains_lines([
+        # linecomp.assert_contains_lines([
-        #    "*X1*popen*xyz*2.5*"
+        #     "*X1*popen*xyz*2.5*"
-        #])
+        # ])
         dsession.pytest_xdist_rsyncstart(source="hello", gateways=[gw1, gw2])
-        linecomp.assert_contains_lines([
+        linecomp.assert_contains_lines(["[X1,X2] rsyncing: hello", ])
-            "[X1,X2] rsyncing: hello",
+
-        ])
+
+def test_report_collection_diff_equal():
+    """Test reporting of equal collections."""
+    from_collection = to_collection = ['aaa', 'bbb', 'ccc']
+    assert report_collection_diff(from_collection, to_collection, 1, 2) is None
+
+
+def test_report_collection_diff_different():
+    """Test reporting of different collections."""
+    from_collection = ['aaa', 'bbb', 'ccc', 'YYY']
+    to_collection = ['aZa', 'bbb', 'XXX', 'ccc']
+    error_message = (
+        'Different tests were collected between 1 and 2. The difference is:\n'
+        '--- 1\n'
+        '\n'
+        '+++ 2\n'
+        '\n'
+        '@@ -1,4 +1,4 @@\n'
+        '\n'
+        '-aaa\n'
+        '+aZa\n'
+        ' bbb\n'
+        '+XXX\n'
+        ' ccc\n'
+        '-YYY')
+
+    msg = report_collection_diff(from_collection, to_collection, '1', '2')
+    assert msg == error_message
+
+
+@pytest.mark.xfail(reason="duplicate test ids not supported yet")
+def test_pytest_issue419(testdir):
+    testdir.makepyfile("""
+        import pytest
+
+        @pytest.mark.parametrize('birth_year', [1988, 1988, ])
+        def test_2011_table(birth_year):
+            pass
+    """)
+    reprec = testdir.inline_run("-n1")
+    reprec.assertoutcome(passed=2)
+    assert 0

testing/test_looponfail.py

@@ -2,6 +2,7 @@ import py
 from xdist.looponfail import RemoteControl
 from xdist.looponfail import StatRecorder
 
+
 class TestStatRecorder:
     def test_filechange(self, tmpdir):
         tmp = tmpdir
@@ -14,6 +15,10 @@ class TestStatRecorder:
         changed = sd.check()
         assert changed
 
+        (hello + "c").write("hello")
+        changed = sd.check()
+        assert not changed
+
         p = tmp.ensure("new.py")
         changed = sd.check()
         assert changed
@@ -36,6 +41,12 @@ class TestStatRecorder:
         changed = sd.check()
         assert changed
 
+    def test_dirchange(self, tmpdir):
+        tmp = tmpdir
+        tmp.ensure("dir", "hello.py")
+        sd = StatRecorder([tmp])
+        assert not sd.fil(tmp.join("dir"))
+
     def test_filechange_deletion_race(self, tmpdir, monkeypatch):
         tmp = tmpdir
         sd = StatRecorder([tmp])
@@ -63,11 +74,9 @@ class TestStatRecorder:
 
         pycfile = hello + "c"
         pycfile.ensure()
-        changed = sd.check()
-        assert not changed
-
         hello.write("world")
         changed = sd.check()
+        assert changed
         assert not pycfile.check()
 
     def test_waitonchange(self, tmpdir, monkeypatch):
@@ -79,6 +88,7 @@ class TestStatRecorder:
         sd.waitonchange(checkinterval=0.2)
         assert not l
 
+
 class TestRemoteControl:
     def test_nofailures(self, testdir):
         item = testdir.getitem("def test_func(): pass\n")
@@ -88,16 +98,14 @@ class TestRemoteControl:
         assert not failures
 
     def test_failures_somewhere(self, testdir):
-        item = testdir.getitem("def test_func(): assert 0\n")
+        item = testdir.getitem("def test_func():\n assert 0\n")
         control = RemoteControl(item.config)
         control.setup()
         failures = control.runsession()
         assert failures
         control.setup()
-        item.fspath.write("def test_func(): assert 1\n")
+        item.fspath.write("def test_func():\n assert 1\n")
-        pyc = item.fspath.new(ext=".pyc")
+        removepyc(item.fspath)
-        if pyc.check():
-            pyc.remove()
         topdir, failures = control.runsession()[:2]
         assert not failures
 
@@ -115,9 +123,7 @@ class TestRemoteControl:
             def test_new():
                 assert 0
         """))
-        pyc = modcol.fspath.new(ext=".pyc")
+        removepyc(modcol.fspath)
-        if pyc.check():
-            pyc.remove()
         control.loop_once()
         assert not control.failures
         control.loop_once()
@@ -132,13 +138,14 @@ class TestRemoteControl:
         parent = modcol.fspath.dirpath().dirpath()
         parent.chdir()
         modcol.config.args = [py.path.local(x).relto(parent)
-                                for x in modcol.config.args]
+                              for x in modcol.config.args]
         control = RemoteControl(modcol.config)
         control.loop_once()
         assert control.failures
         control.loop_once()
         assert control.failures
 
+
 class TestLooponFailing:
     def test_looponfail_from_fail_to_ok(self, testdir):
         modcol = testdir.getmodulecol("""
@@ -210,6 +217,24 @@ class TestLooponFailing:
         remotecontrol.loop_once()
         assert len(remotecontrol.failures) == 1
 
+    def test_looponfail_multiple_errors(self, testdir, monkeypatch):
+        modcol = testdir.getmodulecol("""
+            def test_one():
+                assert 0
+        """)
+        remotecontrol = RemoteControl(modcol.config)
+        orig_runsession = remotecontrol.runsession
+
+        def runsession_dups():
+            # twisted.trial test cases may report multiple errors.
+            failures, reports, collection_failed = orig_runsession()
+            print(failures)
+            return failures * 2, reports, collection_failed
+
+        monkeypatch.setattr(remotecontrol, 'runsession', runsession_dups)
+        remotecontrol.loop_once()
+        assert len(remotecontrol.failures) == 1
+
 
 class TestFunctional:
     def test_fail_to_ok(self, testdir):
@@ -218,8 +243,8 @@ class TestFunctional:
                 x = 0
                 assert x == 1
         """)
-        #p = testdir.mkdir("sub").join(p1.basename)
+        # p = testdir.mkdir("sub").join(p1.basename)
-        #p1.move(p)
+        # p1.move(p)
         child = testdir.spawn_pytest("-f %s --traceconfig" % p)
         child.expect("def test_one")
         child.expect("x == 1")
@@ -247,9 +272,12 @@ class TestFunctional:
         child.expect("waiting for changes")
         child.kill(15)
 
+
 def removepyc(path):
     # XXX damn those pyc files
     pyc = path + "c"
     if pyc.check():
         pyc.remove()
-
+    c = path.dirpath("__pycache__")
+    if c.check():
+        c.remove()

testing/test_newhooks.py

@@ -0,0 +1,50 @@
+import pytest
+
+
+class TestHooks:
+
+    @pytest.fixture(autouse=True)
+    def create_test_file(self, testdir):
+        testdir.makepyfile("""
+            import os
+            def test_a(): pass
+            def test_b(): pass
+            def test_c(): pass
+        """)
+
+    def test_runtest_logreport(self, testdir):
+        """Test that log reports from pytest_runtest_logreport when running
+        with xdist contain a "node" attribute. (#8)
+        """
+        testdir.makeconftest("""
+            def pytest_runtest_logreport(report):
+                if hasattr(report, 'node'):
+                    slaveid = report.node.slaveinput['slaveid']
+                    if report.when == "call":
+                        print("HOOK: %s %s" % (report.nodeid, slaveid))
+        """)
+        res = testdir.runpytest('-n1', '-s')
+        res.stdout.fnmatch_lines([
+            '*HOOK: test_runtest_logreport.py::test_a gw0*',
+            '*HOOK: test_runtest_logreport.py::test_b gw0*',
+            '*HOOK: test_runtest_logreport.py::test_c gw0*',
+            '*3 passed*',
+        ])
+
+    def test_node_collection_finished(self, testdir):
+        """Test pytest_xdist_node_collection_finished hook (#8).
+        """
+        testdir.makeconftest("""
+            def pytest_xdist_node_collection_finished(node, ids):
+                slaveid = node.slaveinput['slaveid']
+                stripped_ids = [x.split('::')[1] for x in ids]
+                print("HOOK: %s %s" % (slaveid, ', '.join(stripped_ids)))
+        """)
+        res = testdir.runpytest('-n2', '-s')
+        res.stdout.fnmatch_lines_random([
+            '*HOOK: gw0 test_a, test_b, test_c',
+            '*HOOK: gw1 test_a, test_b, test_c',
+        ])
+        res.stdout.fnmatch_lines([
+            '*3 passed*',
+        ])

testing/test_plugin.py

@@ -2,6 +2,7 @@ import py
 import execnet
 from xdist.slavemanage import NodeManager
 
+
 def test_dist_incompatibility_messages(testdir):
     result = testdir.runpytest("--pdb", "--looponfail")
     assert result.ret != 0
@@ -12,8 +13,9 @@ def test_dist_incompatibility_messages(testdir):
     assert result.ret != 0
     assert "incompatible" in result.stderr.str()
 
+
 def test_dist_options(testdir):
-    from xdist.plugin import check_options
+    from xdist.plugin import pytest_cmdline_main as check_options
     config = testdir.parseconfigure("-n 2")
     check_options(config)
     assert config.option.dist == "load"
@@ -22,6 +24,18 @@ def test_dist_options(testdir):
     check_options(config)
     assert config.option.dist == "load"
 
+
+def test_auto_detect_cpus(testdir, monkeypatch):
+    import multiprocessing
+    monkeypatch.setattr(multiprocessing, 'cpu_count', lambda: 99)
+
+    config = testdir.parseconfigure("-n2")
+    assert config.getoption('numprocesses') == 2
+
+    config = testdir.parseconfigure("-nauto")
+    assert config.getoption('numprocesses') == 99
+
+
 class TestDistOptions:
     def test_getxspecs(self, testdir):
         config = testdir.parseconfigure("--tx=popen", "--tx", "ssh=xyz")
@@ -33,7 +47,7 @@ class TestDistOptions:
         assert xspecs[1].ssh == "xyz"
 
     def test_xspecs_multiplied(self, testdir):
-        config = testdir.parseconfigure("--tx=3*popen",)
+        config = testdir.parseconfigure("--tx=3*popen", )
         xspecs = NodeManager(config)._getxspecs()
         assert len(xspecs) == 3
         assert xspecs[1].popen
@@ -46,6 +60,11 @@ class TestDistOptions:
         assert nm.roots
         assert testdir.tmpdir in nm.roots
 
+    def test_getrsyncignore(self, testdir):
+        config = testdir.parseconfigure('--rsyncignore=fo*')
+        nm = NodeManager(config, specs=[execnet.XSpec("popen//chdir=qwe")])
+        assert 'fo*' in nm.rsyncoptions['ignores']
+
     def test_getrsyncdirs_with_conftest(self, testdir):
         p = py.path.local()
         for bn in 'x y z'.split():
@@ -55,11 +74,10 @@ class TestDistOptions:
             rsyncdirs= x
         """)
         config = testdir.parseconfigure(
-              testdir.tmpdir, '--rsyncdir=y', '--rsyncdir=z')
+            testdir.tmpdir, '--rsyncdir=y', '--rsyncdir=z')
         nm = NodeManager(config, specs=[execnet.XSpec("popen//chdir=xyz")])
         roots = nm._getrsyncdirs()
-        #assert len(roots) == 3 + 1 # pylib
+        # assert len(roots) == 3 + 1 # pylib
         assert py.path.local('y') in roots
         assert py.path.local('z') in roots
         assert testdir.tmpdir.join('x') in roots
-

testing/test_remote.py

@@ -3,11 +3,11 @@ from xdist.slavemanage import SlaveController, unserialize_report
 from xdist.remote import serialize_report
 import execnet
 queue = py.builtin._tryimport("queue", "Queue")
-from py.builtin import print_
 import marshal
 
 WAIT_TIMEOUT = 10.0
 
+
 def check_marshallable(d):
     try:
         marshal.dumps(d)
@@ -15,24 +15,26 @@ def check_marshallable(d):
         py.std.pprint.pprint(d)
         raise ValueError("not marshallable")
 
+
 class EventCall:
     def __init__(self, eventcall):
         self.name, self.kwargs = eventcall
 
     def __str__(self):
-        return "<EventCall %s(**%s)>" %(self.name, self.kwargs)
+        return "<EventCall %s(**%s)>" % (self.name, self.kwargs)
+
 
 class SlaveSetup:
     use_callback = False
 
     def __init__(self, request):
-        self.testdir = testdir = request.getfuncargvalue("testdir")
+        self.testdir = request.getfuncargvalue("testdir")
         self.request = request
         self.events = queue.Queue()
 
     def setup(self, ):
         self.testdir.chdir()
-        #import os ; os.environ['EXECNET_DEBUG'] = "2"
+        # import os ; os.environ['EXECNET_DEBUG'] = "2"
         self.gateway = execnet.makegateway()
         self.config = config = self.testdir.parseconfigure()
         putevent = self.use_callback and self.events.put or None
@@ -49,14 +51,16 @@ class SlaveSetup:
             ev = EventCall(data)
             if name is None or ev.name == name:
                 return ev
-            print("skipping %s" % (ev,))
+            print("skipping %s" % (ev, ))
 
     def sendcommand(self, name, **kwargs):
         self.slp.sendcommand(name, **kwargs)
 
+
 def pytest_funcarg__slave(request):
     return SlaveSetup(request)
 
+
 def test_remoteinitconfig(testdir):
     from xdist.remote import remote_initconfig
     config1 = testdir.parseconfig()
@@ -64,6 +68,7 @@ def test_remoteinitconfig(testdir):
     assert config2.option.__dict__ == config1.option.__dict__
     assert config2.pluginmanager.getplugin("terminal") in (-1, None)
 
+
 class TestReportSerialization:
     def test_itemreport_outcomes(self, testdir):
         reprec = testdir.inline_runsource("""
@@ -80,7 +85,7 @@ class TestReportSerialization:
                 py.test.xfail("hello")
         """)
         reports = reprec.getreports("pytest_runtest_logreport")
-        assert len(reports) == 6
+        assert len(reports) == 17  # with setup/teardown "passed" reports
         for rep in reports:
             d = serialize_report(rep)
             check_marshallable(d)
@@ -88,7 +93,7 @@ class TestReportSerialization:
             assert newrep.passed == rep.passed
             assert newrep.failed == rep.failed
             assert newrep.skipped == rep.skipped
-            if newrep.skipped and 'xfail' not in newrep.keywords:
+            if newrep.skipped and not hasattr(newrep, "wasxfail"):
                 assert len(newrep.longrepr) == 3
             assert newrep.outcome == rep.outcome
             assert newrep.when == rep.when
@@ -121,9 +126,26 @@ class TestReportSerialization:
             if rep.failed:
                 assert newrep.longrepr == str(rep.longrepr)
 
+    def test_extended_report_deserialization(self, testdir):
+        reprec = testdir.inline_runsource("qwe abc")
+        reports = reprec.getreports("pytest_collectreport")
+        assert reports
+        for rep in reports:
+            rep.extra = True
+            d = serialize_report(rep)
+            check_marshallable(d)
+            newrep = unserialize_report("collectreport", d)
+            assert newrep.extra
+            assert newrep.passed == rep.passed
+            assert newrep.failed == rep.failed
+            assert newrep.skipped == rep.skipped
+            if rep.failed:
+                assert newrep.longrepr == str(rep.longrepr)
+
+
 class TestSlaveInteractor:
     def test_basic_collect_and_runtests(self, slave):
-        p = slave.testdir.makepyfile("""
+        slave.testdir.makepyfile("""
             def test_func():
                 pass
         """)
@@ -137,19 +159,23 @@ class TestSlaveInteractor:
         assert ev.kwargs['topdir'] == slave.testdir.tmpdir
         ids = ev.kwargs['ids']
         assert len(ids) == 1
-        slave.sendcommand("runtests", ids=ids)
+        slave.sendcommand("runtests", indices=list(range(len(ids))))
+        slave.sendcommand("shutdown")
+        ev = slave.popevent("logstart")
+        assert ev.kwargs["nodeid"].endswith("test_func")
+        assert len(ev.kwargs["location"]) == 3
+        ev = slave.popevent("testreport")  # setup
         ev = slave.popevent("testreport")
         assert ev.name == "testreport"
         rep = unserialize_report(ev.name, ev.kwargs['data'])
         assert rep.nodeid.endswith("::test_func")
         assert rep.passed
         assert rep.when == "call"
-        slave.sendcommand("shutdown")
         ev = slave.popevent("slavefinished")
         assert 'slaveoutput' in ev.kwargs
 
     def test_remote_collect_skip(self, slave):
-        p = slave.testdir.makepyfile("""
+        slave.testdir.makepyfile("""
             import py
             py.test.skip("hello")
         """)
@@ -166,7 +192,7 @@ class TestSlaveInteractor:
         assert not ev.kwargs['ids']
 
     def test_remote_collect_fail(self, slave):
-        p = slave.testdir.makepyfile("""aasd qwe""")
+        slave.testdir.makepyfile("""aasd qwe""")
         slave.setup()
         ev = slave.popevent("collectionstart")
         assert not ev.kwargs
@@ -180,7 +206,7 @@ class TestSlaveInteractor:
         assert not ev.kwargs['ids']
 
     def test_runtests_all(self, slave):
-        p = slave.testdir.makepyfile("""
+        slave.testdir.makepyfile("""
             def test_func(): pass
             def test_func2(): pass
         """)
@@ -194,23 +220,20 @@ class TestSlaveInteractor:
         ids = ev.kwargs['ids']
         assert len(ids) == 2
         slave.sendcommand("runtests_all", )
-        ev = slave.popevent("testreport")
+        slave.sendcommand("shutdown", )
-        assert ev.name == "testreport"
+        for func in "::test_func", "::test_func2":
-        rep = unserialize_report(ev.name, ev.kwargs['data'])
+            for i in range(3):  # setup/call/teardown
-        assert rep.nodeid.endswith("::test_func")
+                ev = slave.popevent("testreport")
-        ev = slave.popevent("testreport")
+                assert ev.name == "testreport"
-        assert ev.name == "testreport"
+                rep = unserialize_report(ev.name, ev.kwargs['data'])
-        rep = unserialize_report(ev.name, ev.kwargs['data'])
+                assert rep.nodeid.endswith(func)
-        assert rep.nodeid.endswith("::test_func2")
-        assert rep.passed
-        slave.sendcommand("shutdown")
         ev = slave.popevent("slavefinished")
         assert 'slaveoutput' in ev.kwargs
 
     def test_happy_run_events_converted(self, testdir, slave):
         py.test.xfail("implement a simple test for event production")
         assert not slave.use_callback
-        p = slave.testdir.makepyfile("""
+        slave.testdir.makepyfile("""
             def test_func():
                 pass
         """)
@@ -228,4 +251,3 @@ class TestSlaveInteractor:
             ("pytest_pycollect_makeitem", "name == 'test_func'"),
             ("pytest_collectreport", "report.collector.fspath == bbb"),
         ])
-

testing/test_slavemanage.py

@@ -1,26 +1,45 @@
 import py
-import os
+import pytest
 import execnet
+from _pytest.pytester import HookRecorder
+from xdist import slavemanage, newhooks
 from xdist.slavemanage import HostRSync, NodeManager
 
-pytest_plugins = "pytester",
+pytest_plugins = "pytester"
 
-def pytest_funcarg__hookrecorder(request):
-    _pytest = request.getfuncargvalue('_pytest')
-    config = request.getfuncargvalue('config')
-    return _pytest.gethookrecorder(config.hook)
 
-def pytest_funcarg__config(request):
+def pytest_funcarg__hookrecorder(request, config):
-    testdir = request.getfuncargvalue("testdir")
+    hookrecorder = HookRecorder(config.pluginmanager)
-    config = testdir.parseconfig()
+    if hasattr(hookrecorder, "start_recording"):
-    return config
+        hookrecorder.start_recording(newhooks)
+    request.addfinalizer(hookrecorder.finish_recording)
+    return hookrecorder
+
+
+def pytest_funcarg__config(testdir):
+    return testdir.parseconfig()
+
+
+def pytest_funcarg__mysetup(tmpdir):
+    class mysetup:
+        source = tmpdir.mkdir("source")
+        dest = tmpdir.mkdir("dest")
+
+    return mysetup()
+
+
+@pytest.fixture
+def slavecontroller(monkeypatch):
+    class MockController(object):
+        def __init__(self, *args):
+            pass
+
+        def setup(self):
+            pass
+
+    monkeypatch.setattr(slavemanage, 'SlaveController', MockController)
+    return MockController
 
-class pytest_funcarg__mysetup:
-    def __init__(self, request):
-        temp = request.getfuncargvalue("tmpdir")
-        self.source = temp.mkdir("source")
-        self.dest = temp.mkdir("dest")
-        request.getfuncargvalue("_pytest")
 
 class TestNodeManagerPopen:
     def test_popen_no_default_chdir(self, config):
@@ -34,9 +53,10 @@ class TestNodeManagerPopen:
         for spec in NodeManager(config, l, defaultchdir="abc").specs:
             assert spec.chdir == "abc"
 
-    def test_popen_makegateway_events(self, config, hookrecorder, _pytest):
+    def test_popen_makegateway_events(self, config, hookrecorder,
+                                      slavecontroller):
         hm = NodeManager(config, ["popen"] * 2)
-        hm.makegateways()
+        hm.setup_nodes(None)
         call = hookrecorder.popcall("pytest_xdist_setupnodes")
         assert len(call.specs) == 2
 
@@ -49,33 +69,39 @@ class TestNodeManagerPopen:
         hm.teardown_nodes()
         assert not len(hm.group)
 
-    def test_popens_rsync(self, config, mysetup):
+    def test_popens_rsync(self, config, mysetup, slavecontroller):
         source = mysetup.source
         hm = NodeManager(config, ["popen"] * 2)
-        hm.makegateways()
+        hm.setup_nodes(None)
         assert len(hm.group) == 2
         for gw in hm.group:
+
             class pseudoexec:
                 args = []
+
                 def __init__(self, *args):
                     self.args.extend(args)
+
                 def waitclose(self):
                     pass
+
             gw.remote_exec = pseudoexec
         l = []
-        hm.rsync(source, notify=lambda *args: l.append(args))
+        for gw in hm.group:
+            hm.rsync(gw, source, notify=lambda *args: l.append(args))
         assert not l
         hm.teardown_nodes()
         assert not len(hm.group)
         assert "sys.path.insert" in gw.remote_exec.args[0]
 
-    def test_rsync_popen_with_path(self, config, mysetup):
+    def test_rsync_popen_with_path(self, config, mysetup, slavecontroller):
         source, dest = mysetup.source, mysetup.dest
-        hm = NodeManager(config, ["popen//chdir=%s" %dest] * 1)
+        hm = NodeManager(config, ["popen//chdir=%s" % dest] * 1)
-        hm.makegateways()
+        hm.setup_nodes(None)
         source.ensure("dir1", "dir2", "hello")
         l = []
-        hm.rsync(source, notify=lambda *args: l.append(args))
+        for gw in hm.group:
+            hm.rsync(gw, source, notify=lambda *args: l.append(args))
         assert len(l) == 1
         assert l[0] == ("rsyncrootready", hm.group['gw0'].spec, source)
         hm.teardown_nodes()
@@ -84,34 +110,31 @@ class TestNodeManagerPopen:
         assert dest.join("dir1", "dir2").check()
         assert dest.join("dir1", "dir2", 'hello').check()
 
-    def test_rsync_same_popen_twice(self, config, mysetup, hookrecorder):
+    def test_rsync_same_popen_twice(self, config, mysetup, hookrecorder,
+                                    slavecontroller):
         source, dest = mysetup.source, mysetup.dest
-        hm = NodeManager(config, ["popen//chdir=%s" %dest] * 2)
+        hm = NodeManager(config, ["popen//chdir=%s" % dest] * 2)
-        hm.makegateways()
+        hm.roots = []
+        hm.setup_nodes(None)
         source.ensure("dir1", "dir2", "hello")
-        hm.rsync(source)
+        gw = hm.group[0]
+        hm.rsync(gw, source)
         call = hookrecorder.popcall("pytest_xdist_rsyncstart")
         assert call.source == source
         assert len(call.gateways) == 1
         assert call.gateways[0] in hm.group
         call = hookrecorder.popcall("pytest_xdist_rsyncfinish")
 
-class TestHRSync:
-    class pytest_funcarg__mysetup:
-        def __init__(self, request):
-            tmp = request.getfuncargvalue('tmpdir')
-            self.source = tmp.mkdir("source")
-            self.dest = tmp.mkdir("dest")
 
+class TestHRSync:
     def test_hrsync_filter(self, mysetup):
-        source, dest = mysetup.source, mysetup.dest
+        source, _ = mysetup.source, mysetup.dest  # noqa
         source.ensure("dir", "file.txt")
         source.ensure(".svn", "entries")
         source.ensure(".somedotfile", "moreentries")
         source.ensure("somedir", "editfile~")
-        syncer = HostRSync(source)
+        syncer = HostRSync(source, ignores=NodeManager.DEFAULT_IGNORES)
-        l = list(source.visit(rec=syncer.filter,
+        l = list(source.visit(rec=syncer.filter, fil=syncer.filter))
-                                   fil=syncer.filter))
         assert len(l) == 3
         basenames = [x.basename for x in l]
         assert 'dir' in basenames
@@ -132,12 +155,12 @@ class TestHRSync:
 
 
 class TestNodeManager:
-    @py.test.mark.xfail
+    @py.test.mark.xfail(run=False)
     def test_rsync_roots_no_roots(self, testdir, mysetup):
         mysetup.source.ensure("dir1", "file1").write("hello")
-        config = testdir.reparseconfig([source])
+        config = testdir.parseconfig(mysetup.source)
         nodemanager = NodeManager(config, ["popen//chdir=%s" % mysetup.dest])
-        #assert nodemanager.config.topdir == source == config.topdir
+        # assert nodemanager.config.topdir == source == config.topdir
         nodemanager.makegateways()
         nodemanager.rsync_roots()
         p, = nodemanager.gwmanager.multi_exec(
@@ -148,7 +171,7 @@ class TestNodeManager:
         assert p.join("dir1").check()
         assert p.join("dir1", "file1").check()
 
-    def test_popen_rsync_subdir(self, testdir, mysetup):
+    def test_popen_rsync_subdir(self, testdir, mysetup, slavecontroller):
         source, dest = mysetup.source, mysetup.dest
         dir1 = mysetup.source.mkdir("dir1")
         dir2 = dir1.mkdir("dir2")
@@ -156,12 +179,9 @@ class TestNodeManager:
         for rsyncroot in (dir1, source):
             dest.remove()
             nodemanager = NodeManager(testdir.parseconfig(
-                "--tx", "popen//chdir=%s" % dest,
+                "--tx", "popen//chdir=%s" % dest, "--rsyncdir", rsyncroot,
-                "--rsyncdir", rsyncroot,
+                source, ))
-                source,
+            nodemanager.setup_nodes(None)  # calls .rsync_roots()
-            ))
-            nodemanager.makegateways()
-            nodemanager.rsync_roots()
             if rsyncroot == source:
                 dest = dest.join("source")
             assert dest.join("dir1").check()
@@ -169,7 +189,7 @@ class TestNodeManager:
             assert dest.join("dir1", "dir2", 'hello').check()
             nodemanager.teardown_nodes()
 
-    def test_init_rsync_roots(self, testdir, mysetup):
+    def test_init_rsync_roots(self, testdir, mysetup, slavecontroller):
         source, dest = mysetup.source, mysetup.dest
         dir2 = source.ensure("dir1", "dir2", dir=1)
         source.ensure("dir1", "somefile", dir=1)
@@ -179,55 +199,56 @@ class TestNodeManager:
             [pytest]
             rsyncdirs=dir1/dir2
         """))
-        config = testdir.reparseconfig([source])
+        config = testdir.parseconfig(source)
         nodemanager = NodeManager(config, ["popen//chdir=%s" % dest])
-        nodemanager.makegateways()
+        nodemanager.setup_nodes(None)  # calls .rsync_roots()
-        nodemanager.rsync_roots()
         assert dest.join("dir2").check()
         assert not dest.join("dir1").check()
         assert not dest.join("bogus").check()
 
-    def test_rsyncignore(self, testdir, mysetup):
+    def test_rsyncignore(self, testdir, mysetup, slavecontroller):
         source, dest = mysetup.source, mysetup.dest
         dir2 = source.ensure("dir1", "dir2", dir=1)
-        dir5 = source.ensure("dir5", "dir6", "bogus")
+        source.ensure("dir5", "dir6", "bogus")
-        dirf = source.ensure("dir5", "file")
+        source.ensure("dir5", "file")
         dir2.ensure("hello")
+        source.ensure("foo", "bar")
+        source.ensure("bar", "foo")
         source.join("tox.ini").write(py.std.textwrap.dedent("""
             [pytest]
             rsyncdirs = dir1 dir5
-            rsyncignore = dir1/dir2 dir5/dir6
+            rsyncignore = dir1/dir2 dir5/dir6 foo*
         """))
-        config = testdir.reparseconfig([source])
+        config = testdir.parseconfig(source)
+        config.option.rsyncignore = ['bar']
         nodemanager = NodeManager(config, ["popen//chdir=%s" % dest])
-        nodemanager.makegateways()
+        nodemanager.setup_nodes(None)  # calls .rsync_roots()
-        nodemanager.rsync_roots()
         assert dest.join("dir1").check()
         assert not dest.join("dir1", "dir2").check()
-        assert dest.join("dir5","file").check()
+        assert dest.join("dir5", "file").check()
         assert not dest.join("dir6").check()
+        assert not dest.join('foo').check()
+        assert not dest.join('bar').check()
 
-    def test_optimise_popen(self, testdir, mysetup):
+    def test_optimise_popen(self, testdir, mysetup, slavecontroller):
-        source, dest = mysetup.source, mysetup.dest
+        source = mysetup.source
         specs = ["popen"] * 3
         source.join("conftest.py").write("rsyncdirs = ['a']")
         source.ensure('a', dir=1)
-        config = testdir.reparseconfig([source])
+        config = testdir.parseconfig(source)
         nodemanager = NodeManager(config, specs)
-        nodemanager.makegateways()
+        nodemanager.setup_nodes(None)  # calls .rysnc_roots()
-        nodemanager.rsync_roots()
         for gwspec in nodemanager.specs:
             assert gwspec._samefilesystem()
             assert not gwspec.chdir
 
     def test_ssh_setup_nodes(self, specssh, testdir):
-        testdir.makepyfile(__init__="", test_x="""
+        testdir.makepyfile(__init__="",
+                           test_x="""
             def test_one():
                 pass
         """)
         reprec = testdir.inline_run("-d", "--rsyncdir=%s" % testdir.tmpdir,
-                "--tx", specssh, testdir.tmpdir)
+                                    "--tx", specssh, testdir.tmpdir)
         rep, = reprec.getreports("pytest_runtest_logreport")
         assert rep.passed
-
-

tox.ini

@@ -1,19 +1,37 @@
 [tox]
-envlist=py26,py31,py27,py25,py24
+envlist=
-indexserver=
+  py{26,27,34,35}-pytest2{4,5,6,7,8},py{27,34}-pytest28-pexpect,flakes,readme
-    default = http://pypi.testrun.org
+
-    pypi = http://pypi.python.org/simple
 
 [testenv]
-
 changedir=testing
-deps=pytest
+passenv = USER USERNAME
-commands= py.test --junitxml={envlogdir}/junit-{envname}.xml []
+deps =
+    pycmd
+    setuptools_scm # to avoid .eggs
+    pytest24: pytest~=2.4.0
+    pytest25: pytest~=2.5.0
+    pytest26: pytest~=2.6.1
+    pytest27: pytest~=2.7.2
+    pytest28: pytest~=2.8.3
+    pexpect: pexpect
+commands=
+  # always clean to avoid code unmarshal mismatch on old python/pytest
+  py.cleanup -aq
+  py.test {posargs}
+
+[testenv:flakes]
+changedir=
+deps = flake8
+commands = flake8 setup.py testing xdist
+
+[testenv:readme]
+changedir =
+deps = readme
+skip_install = true
+commands = python setup.py check -r -s
 
-[testenv:py26]
-deps=
-    pytest
-    :pypi:pexpect
 
 [pytest]
 addopts = -rsfxX
+;; hello

xdist/__init__.py

@@ -1,2 +1,2 @@
-#
+__all__ = ['__version__']
-__version__ = '1.6'
+from xdist._version import version as __version__

xdist/boxed.py

@@ -0,0 +1,60 @@
+
+import py
+
+
+def pytest_addoption(parser):
+    group = parser.getgroup("xdist", "distributed and subprocess testing")
+    group.addoption(
+        '--boxed',
+        action="store_true", dest="boxed", default=False,
+        help="box each test run in a separate process (unix)")
+
+
+def pytest_runtest_protocol(item):
+    if item.config.getvalue("boxed"):
+        reports = forked_run_report(item)
+        for rep in reports:
+            item.ihook.pytest_runtest_logreport(report=rep)
+        return True
+
+
+def forked_run_report(item):
+    # for now, we run setup/teardown in the subprocess
+    # XXX optionally allow sharing of setup/teardown
+    from _pytest.runner import runtestprotocol
+    EXITSTATUS_TESTEXIT = 4
+    import marshal
+    from xdist.remote import serialize_report
+    from xdist.slavemanage import unserialize_report
+
+    def runforked():
+        try:
+            reports = runtestprotocol(item, log=False)
+        except KeyboardInterrupt:
+            py.std.os._exit(EXITSTATUS_TESTEXIT)
+        return marshal.dumps([serialize_report(x) for x in reports])
+
+    ff = py.process.ForkedFunc(runforked)
+    result = ff.waitfinish()
+    if result.retval is not None:
+        report_dumps = marshal.loads(result.retval)
+        return [unserialize_report("testreport", x) for x in report_dumps]
+    else:
+        if result.exitstatus == EXITSTATUS_TESTEXIT:
+            py.test.exit("forked test item %s raised Exit" % (item,))
+        return [report_process_crash(item, result)]
+
+
+def report_process_crash(item, result):
+    path, lineno = item._getfslineno()
+    info = ("%s:%s: running the test CRASHED with signal %d" %
+            (path, lineno, result.signal))
+    from _pytest import runner
+    call = runner.CallInfo(lambda: 0/0, "???")
+    call.excinfo = info
+    rep = runner.pytest_runtest_makereport(item, call)
+    if result.out:
+        rep.sections.append(("captured stdout", result.out))
+    if result.err:
+        rep.sections.append(("captured stderr", result.err))
+    return rep

xdist/dsession.py

@@ -1,158 +1,466 @@
-import pytest, py
+import difflib
-import sys
+import itertools
+from _pytest.runner import CollectReport
+
+import pytest
+import py
 from xdist.slavemanage import NodeManager
+
+
 queue = py.builtin._tryimport('queue', 'Queue')
 
+
 class EachScheduling:
+    """Implement scheduling of test items on all nodes
+
+    If a node gets added after the test run is started then it is
+    assumed to replace a node which got removed before it finished
+    its collection.  In this case it will only be used if a node
+    with the same spec got removed earlier.
+
+    Any nodes added after the run is started will only get items
+    assigned if a node with a matching spec was removed before it
+    finished all its pending items.  The new node will then be
+    assigned the remaining items from the removed node.
+    """
 
     def __init__(self, numnodes, log=None):
         self.numnodes = numnodes
         self.node2collection = {}
         self.node2pending = {}
+        self._started = []
+        self._removed2pending = {}
         if log is None:
             self.log = py.log.Producer("eachsched")
         else:
-            self.log = log.loadsched
+            self.log = log.eachsched
         self.collection_is_completed = False
 
+    @property
+    def nodes(self):
+        """A list of all nodes in the scheduler."""
+        return list(self.node2pending.keys())
+
     def hasnodes(self):
         return bool(self.node2pending)
 
+    def haspending(self):
+        """Return True if there are pending test items
+
+        This indicates that collection has finished and nodes are
+        still processing test items, so this can be thought of as
+        "the scheduler is active".
+        """
+        for pending in self.node2pending.values():
+            if pending:
+                return True
+        return False
+
     def addnode(self, node):
-        self.node2collection[node] = None
+        assert node not in self.node2pending
+        self.node2pending[node] = []
 
     def tests_finished(self):
         if not self.collection_is_completed:
             return False
-        for items in self.node2pending.values():
+        if self._removed2pending:
-            if items:
+            return False
+        for pending in self.node2pending.values():
+            if len(pending) >= 2:
                 return False
         return True
 
     def addnode_collection(self, node, collection):
-        assert not self.collection_is_completed
+        """Add the collected test items from a node
-        assert self.node2collection[node] is None
-        self.node2collection[node] = list(collection)
-        self.node2pending[node] = []
-        if len(self.node2pending) >= self.numnodes:
-            self.collection_is_completed = True
 
-    def remove_item(self, node, item):
+        Collection is complete once all nodes have submitted their
-        self.node2pending[node].remove(item)
+        collection.  In this case its pending list is set to an empty
+        list.  When the collection is already completed this
+        submission is from a node which was restarted to replace a
+        dead node.  In this case we already assign the pending items
+        here.  In either case ``.init_distribute()`` will instruct the
+        node to start running the required tests.
+        """
+        assert node in self.node2pending
+        if not self.collection_is_completed:
+            self.node2collection[node] = list(collection)
+            self.node2pending[node] = []
+            if len(self.node2collection) >= self.numnodes:
+                self.collection_is_completed = True
+        elif self._removed2pending:
+            for deadnode in self._removed2pending:
+                if deadnode.gateway.spec == node.gateway.spec:
+                    dead_collection = self.node2collection[deadnode]
+                    if collection != dead_collection:
+                        msg = report_collection_diff(dead_collection,
+                                                     collection,
+                                                     deadnode.gateway.id,
+                                                     node.gateway.id)
+                        self.log(msg)
+                        return
+                    pending = self._removed2pending.pop(deadnode)
+                    self.node2pending[node] = pending
+                    break
+
+    def remove_item(self, node, item_index, duration=0):
+        self.node2pending[node].remove(item_index)
 
     def remove_node(self, node):
         # KeyError if we didn't get an addnode() yet
         pending = self.node2pending.pop(node)
         if not pending:
             return
-        crashitem = pending.pop(0)
+        crashitem = self.node2collection[node][pending.pop(0)]
-        # XXX what about the rest of pending?
+        if pending:
+            self._removed2pending[node] = pending
         return crashitem
 
     def init_distribute(self):
+        """Schedule the test items on the nodes
+
+        If the node's pending list is empty it is a new node which
+        needs to run all the tests.  If the pending list is already
+        populated (by ``.addnode_collection()``) then it replaces a
+        dead node and we only need to run those tests.
+        """
         assert self.collection_is_completed
         for node, pending in self.node2pending.items():
-            node.send_runtest_all()
+            if node in self._started:
-            pending[:] = self.node2collection[node]
+                continue
+            if not pending:
+                pending[:] = range(len(self.node2collection[node]))
+                node.send_runtest_all()
+            else:
+                node.send_runtest_some(pending)
+            self._started.append(node)
+
 
 class LoadScheduling:
-    LOAD_THRESHOLD_NEWITEMS = 5
+    """Implement load scheduling across nodes.
-    ITEM_CHUNKSIZE = 10
 
-    def __init__(self, numnodes, log=None):
+    This distributes the tests collected across all nodes so each test
+    is run just once.  All nodes collect and submit the test suite and
+    when all collections are received it is verified they are
+    identical collections.  Then the collection gets divided up in
+    chunks and chunks get submitted to nodes.  Whenever a node finishes
+    an item, it calls ``.remove_item()`` which will trigger the
+    scheduler to assign more tests if the number of pending tests for
+    the node falls below a low-watermark.
+
+    When created, ``numnodes`` defines how many nodes are expected to
+    submit a collection. This is used to know when all nodes have
+    finished collection or how large the chunks need to be created.
+
+    Attributes:
+
+    :numnodes: The expected number of nodes taking part.  The actual
+       number of nodes will vary during the scheduler's lifetime as
+       nodes are added by the DSession as they are brought up and
+       removed either because of a dead node or normal shutdown.  This
+       number is primarily used to know when the initial collection is
+       completed.
+
+    :node2collection: Map of nodes and their test collection.  All
+       collections should always be identical.
+
+    :node2pending: Map of nodes and the indices of their pending
+       tests.  The indices are an index into ``.pending`` (which is
+       identical to their own collection stored in
+       ``.node2collection``).
+
+    :collection: The one collection once it is validated to be
+       identical between all the nodes.  It is initialised to None
+       until ``.init_distribute()`` is called.
+
+    :pending: List of indices of globally pending tests.  These are
+       tests which have not yet been allocated to a chunk for a node
+       to process.
+
+    :log: A py.log.Producer instance.
+
+    :config: Config object, used for handling hooks.
+    """
+
+    def __init__(self, numnodes, log=None, config=None):
         self.numnodes = numnodes
-        self.node2pending = {}
         self.node2collection = {}
+        self.node2pending = {}
         self.pending = []
+        self.collection = None
         if log is None:
             self.log = py.log.Producer("loadsched")
         else:
             self.log = log.loadsched
-        self.collection_is_completed = False
+        self.config = config
+
+    @property
+    def nodes(self):
+        """A list of all nodes in the scheduler."""
+        return list(self.node2pending.keys())
+
+    @property
+    def collection_is_completed(self):
+        """Boolean indication initial test collection is complete.
+
+        This is a boolean indicating all initial participating nodes
+        have finished collection.  The required number of initial
+        nodes is defined by ``.numnodes``.
+        """
+        return len(self.node2collection) >= self.numnodes
+
+    def haspending(self):
+        """Return True if there are pending test items
+
+        This indicates that collection has finished and nodes are
+        still processing test items, so this can be thought of as
+        "the scheduler is active".
+        """
+        if self.pending:
+            return True
+        for pending in self.node2pending.values():
+            if pending:
+                return True
+        return False
 
     def hasnodes(self):
+        """Return True if nodes exist in the scheduler."""
         return bool(self.node2pending)
 
     def addnode(self, node):
+        """Add a new node to the scheduler.
+
+        From now on the node will be allocated chunks of tests to
+        execute.
+
+        Called by the ``DSession.slave_slaveready`` hook when it
+        successfully bootstraps a new node.
+        """
+        assert node not in self.node2pending
         self.node2pending[node] = []
 
     def tests_finished(self):
-        if not self.collection_is_completed or self.pending:
+        """Return True if all tests have been executed by the nodes."""
+        if not self.collection_is_completed:
             return False
-        for items in self.node2pending.values():
+        if self.pending:
-            if items:
+            return False
+        for pending in self.node2pending.values():
+            if len(pending) >= 2:
                 return False
         return True
 
     def addnode_collection(self, node, collection):
-        assert not self.collection_is_completed
+        """Add the collected test items from a node
-        assert node in self.node2pending
-        self.node2collection[node] = list(collection)
-        if len(self.node2collection) >= self.numnodes:
-            self.collection_is_completed = True
 
-    def remove_item(self, node, item):
+        The collection is stored in the ``.node2collection`` map.
-        if item not in self.item2nodes:
+        Called by the ``DSession.slave_collectionfinish`` hook.
-            raise AssertionError(item, self.item2nodes)
+        """
-        nodes = self.item2nodes[item]
+        assert node in self.node2pending
-        if node in nodes: # the node might have gone down already
+        if self.collection_is_completed:
-            nodes.remove(node)
+            # A new node has been added later, perhaps an original one died.
-        #if not nodes:
+            # .init_distribute() should have
-        #    del self.item2nodes[item]
+            # been called by now
-        pending = self.node2pending[node]
+            assert self.collection
-        pending.remove(item)
+            if collection != self.collection:
-        # pre-load items-to-test if the node may become ready
+                other_node = next(iter(self.node2collection.keys()))
-        if self.pending and len(pending) < self.LOAD_THRESHOLD_NEWITEMS:
+                msg = report_collection_diff(self.collection,
-            item = self.pending.pop(0)
+                                             collection,
-            pending.append(item)
+                                             other_node.gateway.id,
-            self.item2nodes.setdefault(item, []).append(node)
+                                             node.gateway.id)
-            node.send_runtest(item)
+                self.log(msg)
-        #self.log("items waiting for node: %d" %(len(self.pending)))
+                return
-        #self.log("item2pending still executing: %s" %(self.item2nodes,))
+        self.node2collection[node] = list(collection)
-        #self.log("node2pending: %s" %(self.node2pending,))
+
+    def remove_item(self, node, item_index, duration=0):
+        """Mark test item as completed by node
+
+        The duration it took to execute the item is used as a hint to
+        the scheduler.
+
+        This is called by the ``DSession.slave_testreport`` hook.
+        """
+        self.node2pending[node].remove(item_index)
+        self.check_schedule(node, duration=duration)
+
+    def check_schedule(self, node, duration=0):
+        """Maybe schedule new items on the node
+
+        If there are any globally pending nodes left then this will
+        check if the given node should be given any more tests.  The
+        ``duration`` of the last test is optionally used as a
+        heuristic to influence how many tests the node is assigned.
+        """
+        if node.shutting_down:
+            return
+
+        if self.pending:
+            # how many nodes do we have?
+            num_nodes = len(self.node2pending)
+            # if our node goes below a heuristic minimum, fill it out to
+            # heuristic maximum
+            items_per_node_min = max(2, len(self.pending) // num_nodes // 4)
+            items_per_node_max = max(2, len(self.pending) // num_nodes // 2)
+            node_pending = self.node2pending[node]
+            if len(node_pending) < items_per_node_min:
+                if duration >= 0.1 and len(node_pending) >= 2:
+                    # seems the node is doing long-running tests
+                    # and has enough items to continue
+                    # so let's rather wait with sending new items
+                    return
+                num_send = items_per_node_max - len(node_pending)
+                self._send_tests(node, num_send)
+        self.log("num items waiting for node:", len(self.pending))
 
     def remove_node(self, node):
+        """Remove a node from the scheduler
+
+        This should be called either when the node crashed or at
+        shutdown time.  In the former case any pending items assigned
+        to the node will be re-scheduled.  Called by the
+        ``DSession.slave_slavefinished`` and
+        ``DSession.slave_errordown`` hooks.
+
+        Return the item which was being executing while the node
+        crashed or None if the node has no more pending items.
+
+        """
         pending = self.node2pending.pop(node)
-        # KeyError if we didn't get an addnode() yet
-        for item in pending:
-            l = self.item2nodes[item]
-            l.remove(node)
-            if not l:
-                del self.item2nodes[item]
         if not pending:
             return
-        crashitem = pending.pop(0)
+
+        # The node crashed, reassing pending items
+        crashitem = self.collection[pending.pop(0)]
         self.pending.extend(pending)
+        for node in self.node2pending:
+            self.check_schedule(node)
         return crashitem
 
     def init_distribute(self):
+        """Initiate distribution of the test collection
+
+        Initiate scheduling of the items across the nodes.  If this
+        gets called again later it behaves the same as calling
+        ``.check_schedule()`` on all nodes so that newly added nodes
+        will start to be used.
+
+        This is called by the ``DSession.slave_collectionfinish`` hook
+        if ``.collection_is_completed`` is True.
+
+        XXX Perhaps this method should have been called ".schedule()".
+        """
         assert self.collection_is_completed
-        assert not hasattr(self, 'item2nodes')
+
-        self.item2nodes = {}
+        # Initial distribution already happened, reschedule on all nodes
-        # XXX allow nodes to have different collections
+        if self.collection is not None:
-        col = list(self.node2collection.values())[0]
+            for node in self.nodes:
-        for node, collection in self.node2collection.items():
+                self.check_schedule(node)
-            assert collection == col
-        self.pending = col
-        if not col:
             return
-        available = list(self.node2pending.items())
+
-        num_available = self.numnodes
+        # XXX allow nodes to have different collections
-        max_one_round = num_available * self.ITEM_CHUNKSIZE -1
+        if not self._check_nodes_have_same_collection():
-        for i, item in enumerate(self.pending):
+            self.log('**Different tests collected, aborting run**')
-            nodeindex = i % num_available
+            return
-            node, pending = available[nodeindex]
+
-            node.send_runtest(item)
+        # Collections are identical, create the index of pending items.
-            self.item2nodes.setdefault(item, []).append(node)
+        self.collection = list(self.node2collection.values())[0]
-            pending.append(item)
+        self.pending[:] = range(len(self.collection))
-            if i >= max_one_round:
+        if not self.collection:
-                break
+            return
-        del self.pending[:i+1]
+
+        # Send a batch of tests to run. If we don't have at least two
+        # tests per node, we have to send them all so that we can send
+        # shutdown signals and get all nodes working.
+        initial_batch = max(len(self.pending) // 4,
+                            2 * len(self.nodes))
+
+        # distribute tests round-robin up to the batch size
+        # (or until we run out)
+        nodes = itertools.cycle(self.nodes)
+        for i in range(initial_batch):
+            self._send_tests(next(nodes), 1)
+
+        if not self.pending:
+            # initial distribution sent all tests, start node shutdown
+            for node in self.nodes:
+                node.shutdown()
+
+    def _send_tests(self, node, num):
+        tests_per_node = self.pending[:num]
+        if tests_per_node:
+            del self.pending[:num]
+            self.node2pending[node].extend(tests_per_node)
+            node.send_runtest_some(tests_per_node)
+
+    def _check_nodes_have_same_collection(self):
+        """Return True if all nodes have collected the same items.
+
+        If collections differ, this method returns False while logging
+        the collection differences and posting collection errors to
+        pytest_collectreport hook.
+        """
+        node_collection_items = list(self.node2collection.items())
+        first_node, col = node_collection_items[0]
+        same_collection = True
+        for node, collection in node_collection_items[1:]:
+            msg = report_collection_diff(
+                col,
+                collection,
+                first_node.gateway.id,
+                node.gateway.id,
+            )
+            if msg:
+                same_collection = False
+                self.log(msg)
+                if self.config is not None:
+                    rep = CollectReport(
+                        node.gateway.id, 'failed',
+                        longrepr=msg, result=[])
+                    self.config.hook.pytest_collectreport(report=rep)
+
+        return same_collection
+
+
+def report_collection_diff(from_collection, to_collection, from_id, to_id):
+    """Report the collected test difference between two nodes.
+
+    :returns: detailed message describing the difference between the given
+    collections, or None if they are equal.
+    """
+    if from_collection == to_collection:
+        return None
+
+    diff = difflib.unified_diff(
+        from_collection,
+        to_collection,
+        fromfile=from_id,
+        tofile=to_id,
+    )
+    error_message = py.builtin._totext(
+        'Different tests were collected between {from_id} and {to_id}. '
+        'The difference is:\n'
+        '{diff}'
+    ).format(from_id=from_id, to_id=to_id, diff='\n'.join(diff))
+    msg = "\n".join([x.rstrip() for x in error_message.split("\n")])
+    return msg
+
 
 class Interrupted(KeyboardInterrupt):
     """ signals an immediate interruption. """
 
+
 class DSession:
+    """A py.test plugin which runs a distributed test session
+
+    At the beginning of the test session this creates a NodeManager
+    instance which creates and starts all nodes.  Nodes then emit
+    events processed in the pytest_runtestloop hook using the slave_*
+    methods.
+
+    Once a node is started it will automatically start running the
+    py.test mainloop with some custom hooks.  This means a node
+    automatically starts collecting tests.  Once tests are collected
+    it will wait for instructions.
+    """
     def __init__(self, config):
         self.config = config
         self.log = py.log.Producer("dsession")
@@ -162,6 +470,13 @@ class DSession:
         self.countfailures = 0
         self.maxfail = config.getvalue("maxfail")
         self.queue = queue.Queue()
+        self._session = None
+        self._failed_collection_errors = {}
+        self._active_nodes = set()
+        self._failed_nodes_count = 0
+        self._max_slave_restart = self.config.getoption('max_slave_restart')
+        if self._max_slave_restart is not None:
+            self._max_slave_restart = int(self._max_slave_restart)
         try:
             self.terminal = config.pluginmanager.getplugin("terminalreporter")
         except KeyError:
@@ -170,20 +485,37 @@ class DSession:
             self.trdist = TerminalDistReporter(config)
             config.pluginmanager.register(self.trdist, "terminaldistreporter")
 
+    @property
+    def session_finished(self):
+        """Return True if the distributed session has finished
+
+        This means all nodes have executed all test items.  This is
+        used by pytest_runtestloop to break out of its loop.
+        """
+        return bool(self.shuttingdown and not self._active_nodes)
+
     def report_line(self, line):
         if self.terminal and self.config.option.verbose >= 0:
             self.terminal.write_line(line)
 
     @pytest.mark.trylast
     def pytest_sessionstart(self, session):
+        """Creates and starts the nodes.
+
+        The nodes are setup to put their events onto self.queue.  As
+        soon as nodes start they will emit the slave_slaveready event.
+        """
         self.nodemanager = NodeManager(self.config)
-        self.nodemanager.setup_nodes(putevent=self.queue.put)
+        nodes = self.nodemanager.setup_nodes(putevent=self.queue.put)
+        self._active_nodes.update(nodes)
+        self._session = session
 
     def pytest_sessionfinish(self, session):
-        """ teardown any resources after a test run. """
+        """Shutdown all nodes."""
-        nm = getattr(self, 'nodemanager', None) # if not fully initialized
+        nm = getattr(self, 'nodemanager', None)  # if not fully initialized
         if nm is not None:
             nm.teardown_nodes()
+        self._session = None
 
     def pytest_collection(self):
         # prohibit collection of test items in master process
@@ -193,13 +525,13 @@ class DSession:
         numnodes = len(self.nodemanager.specs)
         dist = self.config.getvalue("dist")
         if dist == "load":
-            self.sched = LoadScheduling(numnodes, log=self.log)
+            self.sched = LoadScheduling(numnodes, log=self.log,
+                                        config=self.config)
         elif dist == "each":
             self.sched = EachScheduling(numnodes, log=self.log)
         else:
             assert 0, dist
         self.shouldstop = False
-        self.session_finished = False
         while not self.session_finished:
             self.loop_once()
             if self.shouldstop:
@@ -207,7 +539,7 @@ class DSession:
         return True
 
     def loop_once(self):
-        """ process one callback from one of the slaves. """
+        """Process one callback from one of the slaves."""
         while 1:
             try:
                 eventcall = self.queue.get(timeout=2.0)
@@ -218,7 +550,7 @@ class DSession:
         assert callname, kwargs
         method = "slave_" + callname
         call = getattr(self, method)
-        self.log("calling method: %s(**%s)" % (method, kwargs))
+        self.log("calling method", method, kwargs)
         call(**kwargs)
         if self.sched.tests_finished():
             self.triggershutdown()
@@ -228,26 +560,40 @@ class DSession:
     #
 
     def slave_slaveready(self, node, slaveinfo):
+        """Emitted when a node first starts up.
+
+        This adds the node to the scheduler, nodes continue with
+        collection without any further input.
+        """
         node.slaveinfo = slaveinfo
         node.slaveinfo['id'] = node.gateway.id
         node.slaveinfo['spec'] = node.gateway.spec
         self.config.hook.pytest_testnodeready(node=node)
-        self.sched.addnode(node)
         if self.shuttingdown:
             node.shutdown()
+        else:
+            self.sched.addnode(node)
 
     def slave_slavefinished(self, node):
+        """Emitted when node executes its pytest_sessionfinish hook.
+
+        Removes the node from the scheduler.
+
+        The node might not be in the scheduler if it had not emitted
+        slaveready before shutdown was triggered.
+        """
         self.config.hook.pytest_testnodedown(node=node, error=None)
-        if node.slaveoutput['exitstatus'] == 2: # keyboard-interrupt
+        if node.slaveoutput['exitstatus'] == 2:  # keyboard-interrupt
             self.shouldstop = "%s received keyboard-interrupt" % (node,)
             self.slave_errordown(node, "keyboard-interrupt")
             return
-        crashitem = self.sched.remove_node(node)
+        if node in self.sched.nodes:
-        #assert not crashitem, (crashitem, node)
+            crashitem = self.sched.remove_node(node)
-        if self.shuttingdown and not self.sched.hasnodes():
+            assert not crashitem, (crashitem, node)
-            self.session_finished = True
+        self._active_nodes.remove(node)
 
     def slave_errordown(self, node, error):
+        """Emitted by the SlaveController when a node dies."""
         self.config.hook.pytest_testnodedown(node=node, error=error)
         try:
             crashitem = self.sched.remove_node(node)
@@ -256,44 +602,94 @@ class DSession:
         else:
             if crashitem:
                 self.handle_crashitem(crashitem, node)
-                #self.report_line("item crashed on node: %s" % crashitem)
+
-        if not self.sched.hasnodes():
+        self._failed_nodes_count += 1
-            self.session_finished = True
+        maximum_reached = (self._max_slave_restart is not None and
+                           self._failed_nodes_count > self._max_slave_restart)
+        if maximum_reached:
+            if self._max_slave_restart == 0:
+                msg = 'Slave restarting disabled'
+            else:
+                msg = "Maximum crashed slaves reached: %d" % \
+                      self._max_slave_restart
+            self.report_line(msg)
+        else:
+            self.report_line("Replacing crashed slave %s" % node.gateway.id)
+            self._clone_node(node)
+        self._active_nodes.remove(node)
 
     def slave_collectionfinish(self, node, ids):
+        """Slave has finished test collection.
+
+        This adds the collection for this node to the scheduler.  If
+        the scheduler indicates collection is finished (i.e. all
+        initial nodes have submitted their collections), then tells the
+        scheduler to schedule the collected items.  When initiating
+        scheduling the first time it logs which scheduler is in use.
+        """
+        if self.shuttingdown:
+            return
+        self.config.hook.pytest_xdist_node_collection_finished(node=node,
+                                                               ids=ids)
+        # tell session which items were effectively collected otherwise
+        # the master node will finish the session with EXIT_NOTESTSCOLLECTED
+        self._session.testscollected = len(ids)
         self.sched.addnode_collection(node, ids)
         if self.terminal:
-            self.trdist.setstatus(node.gateway.spec, "[%d]" %(len(ids)))
+            self.trdist.setstatus(node.gateway.spec, "[%d]" % (len(ids)))
-
         if self.sched.collection_is_completed:
-            if self.terminal:
+            if self.terminal and not self.sched.haspending():
                 self.trdist.ensure_show_status()
                 self.terminal.write_line("")
-                self.terminal.write_line("scheduling tests via %s" %(
+                self.terminal.write_line("scheduling tests via %s" % (
                     self.sched.__class__.__name__))
-                
             self.sched.init_distribute()
 
     def slave_logstart(self, node, nodeid, location):
+        """Emitted when a node calls the pytest_runtest_logstart hook."""
         self.config.hook.pytest_runtest_logstart(
             nodeid=nodeid, location=location)
 
     def slave_testreport(self, node, rep):
-        if rep.when in ("setup", "call"):
+        """Emitted when a node calls the pytest_runtest_logreport hook.
-            self.sched.remove_item(node, rep.nodeid)
+
-        #self.report_line("testreport %s: %s" %(rep.id, rep.status))
+        If the node indicates it is finished with a test item, remove
+        the item from the pending list in the scheduler.
+        """
+        if rep.when == "call" or (rep.when == "setup" and not rep.passed):
+            self.sched.remove_item(node, rep.item_index, rep.duration)
+        # self.report_line("testreport %s: %s" %(rep.id, rep.status))
         rep.node = node
         self.config.hook.pytest_runtest_logreport(report=rep)
         self._handlefailures(rep)
 
-    def slave_teardownreport(self, node, rep):
-        rep.node = node
-        self.config.hook.pytest__teardown_final_logerror(report=rep)
-
     def slave_collectreport(self, node, rep):
-        #self.report_line("collectreport %s: %s" %(rep.id, rep.status))
+        """Emitted when a node calls the pytest_collectreport hook."""
-        #rep.node = node
+        if rep.failed:
-        self._handlefailures(rep)
+            self._failed_slave_collectreport(node, rep)
+
+    def _clone_node(self, node):
+        """Return new node based on an existing one.
+
+        This is normally for when a node dies, this will copy the spec
+        of the existing node and create a new one with a new id.  The
+        new node will have been setup so it will start calling the
+        "slave_*" hooks and do work soon.
+        """
+        spec = node.gateway.spec
+        spec.id = None
+        self.nodemanager.group.allocate_id(spec)
+        node = self.nodemanager.setup_node(spec, self.queue.put)
+        self._active_nodes.add(node)
+        return node
+
+    def _failed_slave_collectreport(self, node, rep):
+        # Check we haven't already seen this report (from
+        # another slave).
+        if rep.longrepr not in self._failed_collection_errors:
+            self._failed_collection_errors[rep.longrepr] = True
+            self.config.hook.pytest_collectreport(report=rep)
+            self._handlefailures(rep)
 
     def _handlefailures(self, rep):
         if rep.failed:
@@ -305,19 +701,21 @@ class DSession:
     def triggershutdown(self):
         self.log("triggering shutdown")
         self.shuttingdown = True
-        for node in self.sched.node2pending:
+        for node in self.sched.nodes:
             node.shutdown()
 
     def handle_crashitem(self, nodeid, slave):
         # XXX get more reporting info by recording pytest_runtest_logstart?
+        # XXX count no of failures and retry N times
         runner = self.config.pluginmanager.getplugin("runner")
         fspath = nodeid.split("::")[0]
-        msg = "Slave %r crashed while running %r" %(slave.gateway.id, nodeid)
+        msg = "Slave %r crashed while running %r" % (slave.gateway.id, nodeid)
-        rep = runner.TestReport(nodeid, (fspath, None, fspath), (),
+        rep = runner.TestReport(nodeid, (fspath, None, fspath),
-            "failed", msg, "???")
+                                (), "failed", msg, "???")
         rep.node = slave
         self.config.hook.pytest_runtest_logreport(report=rep)
 
+
 class TerminalDistReporter:
     def __init__(self, config):
         self.config = config
@@ -338,8 +736,8 @@ class TerminalDistReporter:
             self.rewrite(self.getstatus())
 
     def getstatus(self):
-        parts = ["%s %s" %(spec.id, self._status[spec.id])
+        parts = ["%s %s" % (spec.id, self._status[spec.id])
-                   for spec in self._specs]
+                 for spec in self._specs]
         return " / ".join(parts)
 
     def rewrite(self, line, newline=False):
@@ -370,7 +768,7 @@ class TerminalDistReporter:
     def pytest_testnodeready(self, node):
         if self.config.option.verbose > 0:
             d = node.slaveinfo
-            infoline = "[%s] Python %s" %(
+            infoline = "[%s] Python %s" % (
                 d['id'],
                 d['version'].replace('\n', ' -- '),)
             self.rewrite(infoline, newline=True)
@@ -379,13 +777,12 @@ class TerminalDistReporter:
     def pytest_testnodedown(self, node, error):
         if not error:
             return
-        self.write_line("[%s] node down: %s" %(node.gateway.id, error))
+        self.write_line("[%s] node down: %s" % (node.gateway.id, error))
 
-    #def pytest_xdist_rsyncstart(self, source, gateways):
+    # def pytest_xdist_rsyncstart(self, source, gateways):
     #    targets = ",".join([gw.id for gw in gateways])
     #    msg = "[%s] rsyncing: %s" %(targets, source)
     #    self.write_line(msg)
-    #def pytest_xdist_rsyncfinish(self, source, gateways):
+    # def pytest_xdist_rsyncfinish(self, source, gateways):
     #    targets = ", ".join(["[%s]" % gw.id for gw in gateways])
     #    self.write_line("rsyncfinish: %s -> %s" %(source, targets))
-

xdist/looponfail.py

@@ -7,10 +7,32 @@
     the controlling process which should best never happen.
 """
 
-import py, pytest
+import py
+import pytest
 import sys
 import execnet
 
+
+def pytest_addoption(parser):
+    group = parser.getgroup("xdist", "distributed and subprocess testing")
+    group._addoption(
+        '-f', '--looponfail',
+        action="store_true", dest="looponfail", default=False,
+        help="run tests in subprocess, wait for modified files "
+             "and re-run failing test set until all pass.")
+
+
+def pytest_cmdline_main(config):
+
+    if config.getoption("looponfail"):
+        usepdb = config.getoption('usepdb')  # a core option
+        if usepdb:
+            raise pytest.UsageError(
+                "--pdb incompatible with --looponfail.")
+        looponfail_main(config)
+        return 2  # looponfail only can get stop with ctrl-C anyway
+
+
 def looponfail_main(config):
     remotecontrol = RemoteControl(config)
     rootdirs = config.getini("looponfailroots")
@@ -19,7 +41,8 @@ def looponfail_main(config):
         while 1:
             remotecontrol.loop_once()
             if not remotecontrol.failures and remotecontrol.wasfailing:
-                continue # the last failures passed, let's immediately rerun all
+                # the last failures passed, let's immediately rerun all
+                continue
             repr_pytest_looponfailinfo(
                 failreports=remotecontrol.failures,
                 rootdirs=rootdirs)
@@ -27,6 +50,7 @@ def looponfail_main(config):
     except KeyboardInterrupt:
         print()
 
+
 class RemoteControl(object):
     def __init__(self, config):
         self.config = config
@@ -47,11 +71,13 @@ class RemoteControl(object):
             raise ValueError("already have gateway %r" % self.gateway)
         self.trace("setting up slave session")
         self.gateway = self.initgateway()
-        self.channel = channel = self.gateway.remote_exec(init_slave_session,
+        self.channel = channel = self.gateway.remote_exec(
+            init_slave_session,
             args=self.config.args,
             option_dict=vars(self.config.option),
         )
         remote_outchannel = channel.receive()
+
         def write(s):
             out._file.write(s)
             out._file.flush()
@@ -87,9 +113,14 @@ class RemoteControl(object):
         result = self.runsession()
         failures, reports, collection_failed = result
         if collection_failed:
-            reports = ["Collection failed, keeping previous failure set"]
+            pass  # "Collection failed, keeping previous failure set"
         else:
-            self.failures = failures
+            uniq_failures = []
+            for failure in failures:
+                if failure not in uniq_failures:
+                    uniq_failures.append(failure)
+            self.failures = uniq_failures
+
 
 def repr_pytest_looponfailinfo(failreports, rootdirs):
     tr = py.io.TerminalWriter()
@@ -100,12 +131,12 @@ def repr_pytest_looponfailinfo(failreports, rootdirs):
                 tr.line(report, red=True)
     tr.sep("#", "waiting for changes", bold=True)
     for rootdir in rootdirs:
-        tr.line("### Watching:   %s" %(rootdir,), bold=True)
+        tr.line("### Watching:   %s" % (rootdir,), bold=True)
 
 
 def init_slave_session(channel, args, option_dict):
-    import os, sys
+    import os
-    import py
+    import sys
     outchannel = channel.gateway.newchannel()
     sys.stdout = sys.stderr = outchannel.makefile('w')
     channel.send(outchannel)
@@ -118,13 +149,14 @@ def init_slave_session(channel, args, option_dict):
             newpaths.append(p)
     sys.path[:] = newpaths
 
-    #fullwidth, hasmarkup = channel.receive()
+    # fullwidth, hasmarkup = channel.receive()
     from _pytest.config import Config
     config = Config.fromdictargs(option_dict, list(args))
     config.args = args
     from xdist.looponfail import SlaveFailSession
     SlaveFailSession(config, channel).main()
 
+
 class SlaveFailSession:
     def __init__(self, config, channel):
         self.config = config
@@ -147,7 +179,8 @@ class SlaveFailSession:
             items = session.perform_collect(self.trails or None)
         except pytest.UsageError:
             items = session.perform_collect(None)
-        hook.pytest_collection_modifyitems(session=session, config=session.config, items=items)
+        hook.pytest_collection_modifyitems(
+            session=session, config=session.config, items=items)
         hook.pytest_collection_finish(session=session)
         return True
 
@@ -165,7 +198,7 @@ class SlaveFailSession:
         try:
             command = self.channel.receive()
         except KeyboardInterrupt:
-            return # in the slave we can't do much about this
+            return  # in the slave we can't do much about this
         self.DEBUG("received", command)
         self.current_command = command
         self.config.hook.pytest_cmdline_main(config=self.config)
@@ -177,14 +210,16 @@ class SlaveFailSession:
             failreports.append(loc)
         self.channel.send((trails, failreports, self.collection_failed))
 
+
 class StatRecorder:
     def __init__(self, rootdirlist):
         self.rootdirlist = rootdirlist
         self.statcache = {}
-        self.check() # snapshot state
+        self.check()  # snapshot state
 
     def fil(self, p):
-        return p.ext in ('.py', '.txt', '.c', '.h')
+        return p.check(file=1, dotfile=0) and p.ext != ".pyc"
+
     def rec(self, p):
         return p.check(dotfile=0)
 
@@ -195,7 +230,7 @@ class StatRecorder:
                 return
             py.std.time.sleep(checkinterval)
 
-    def check(self, removepycfiles=True):
+    def check(self, removepycfiles=True):  # noqa, too complex
         changed = False
         statcache = self.statcache
         newstat = {}
@@ -209,8 +244,8 @@ class StatRecorder:
                         changed = True
                 else:
                     if oldstat:
-                       if oldstat.mtime != curstat.mtime or \
+                        if oldstat.mtime != curstat.mtime or \
-                          oldstat.size != curstat.size:
+                           oldstat.size != curstat.size:
                             changed = True
                             py.builtin.print_("# MODIFIED", path)
                             if removepycfiles and path.ext == ".py":
@@ -224,4 +259,3 @@ class StatRecorder:
             changed = True
         self.statcache = newstat
         return changed
-

xdist/newhooks.py

@@ -1,21 +1,46 @@
+"""
+xdist hooks.
+
+Additionally, pytest-xdist will also decorate a few other hooks
+with the worker instance that executed the hook originally:
+
+``pytest_runtest_logreport``: ``rep`` parameter has a ``node`` attribute.
+
+You can use this hooks just as you would use normal pytest hooks, but some care
+must be taken in plugins in case ``xdist`` is not installed. Please see:
+
+    http://pytest.org/latest/writing_plugins.html#optionally-using-hooks-from-3rd-party-plugins
+"""
+
 
 def pytest_xdist_setupnodes(config, specs):
     """ called before any remote node is set up. """
 
+
 def pytest_xdist_newgateway(gateway):
     """ called on new raw gateway creation. """
 
+
 def pytest_xdist_rsyncstart(source, gateways):
     """ called before rsyncing a directory to remote gateways takes place. """
 
+
 def pytest_xdist_rsyncfinish(source, gateways):
     """ called after rsyncing a directory to remote gateways takes place. """
 
+
 def pytest_configure_node(node):
     """ configure node information before it gets instantiated. """
 
+
 def pytest_testnodeready(node):
     """ Test Node is ready to operate. """
 
+
 def pytest_testnodedown(node, error):
     """ Test Node is down. """
+
+
+def pytest_xdist_node_collection_finished(node, ids):
+    """called by the master node when a node finishes collecting.
+    """

xdist/plugin.py

@@ -1,123 +1,101 @@
-import sys
+import py
-import py, pytest
+import pytest
+
+
+def parse_numprocesses(s):
+    if s == 'auto':
+        import multiprocessing
+        return multiprocessing.cpu_count()
+    else:
+        return int(s)
+
 
 def pytest_addoption(parser):
     group = parser.getgroup("xdist", "distributed and subprocess testing")
-    group._addoption('-f', '--looponfail',
+    group._addoption(
-           action="store_true", dest="looponfail", default=False,
+        '-n', dest="numprocesses", metavar="numprocesses",
-           help="run tests in subprocess, wait for modified files "
+        action="store",
-                "and re-run failing test set until all pass.")
+        type=parse_numprocesses,
-    group._addoption('-n', dest="numprocesses", metavar="numprocesses",
+        help="shortcut for '--dist=load --tx=NUM*popen', "
-           action="store", type="int",
+             "you can use 'auto' here for auto detection CPUs number on "
-           help="shortcut for '--dist=load --tx=NUM*popen'")
+             "host system")
-    group.addoption('--boxed',
+    group._addoption('--max-slave-restart', action="store", default=None,
-           action="store_true", dest="boxed", default=False,
+                     help="maximum number of slaves that can be restarted "
-           help="box each test run in a separate process (unix)")
+                          "when crashed (set to zero to disable this feature)")
-    group._addoption('--dist', metavar="distmode",
+    group._addoption(
-           action="store", choices=['load', 'each', 'no'],
+        '--dist', metavar="distmode",
-           type="choice", dest="dist", default="no",
+        action="store", choices=['load', 'each', 'no'],
-           help=("set mode for distributing tests to exec environments.\n\n"
+        type="choice", dest="dist", default="no",
-                 "each: send each test to each available environment.\n\n"
+        help=("set mode for distributing tests to exec environments.\n\n"
-                 "load: send each test to available environment.\n\n"
+              "each: send each test to each available environment.\n\n"
-                 "(default) no: run tests inprocess, don't distribute."))
+              "load: send each test to available environment.\n\n"
-    group._addoption('--tx', dest="tx", action="append", default=[],
+              "(default) no: run tests inprocess, don't distribute."))
-           metavar="xspec",
+    group._addoption(
-           help=("add a test execution environment. some examples: "
+        '--tx', dest="tx", action="append", default=[],
-                 "--tx popen//python=python2.5 --tx socket=192.168.1.102:8888 "
+        metavar="xspec",
-                 "--tx ssh=user@codespeak.net//chdir=testcache"))
+        help=("add a test execution environment. some examples: "
-    group._addoption('-d',
+              "--tx popen//python=python2.5 --tx socket=192.168.1.102:8888 "
-           action="store_true", dest="distload", default=False,
+              "--tx ssh=user@codespeak.net//chdir=testcache"))
-           help="load-balance tests.  shortcut for '--dist=load'")
+    group._addoption(
-    group.addoption('--rsyncdir', action="append", default=[], metavar="dir1",
+        '-d',
-           help="add directory for rsyncing to remote tx nodes.")
+        action="store_true", dest="distload", default=False,
+        help="load-balance tests.  shortcut for '--dist=load'")
+    group.addoption(
+        '--rsyncdir', action="append", default=[], metavar="DIR",
+        help="add directory for rsyncing to remote tx nodes.")
+    group.addoption(
+        '--rsyncignore', action="append", default=[], metavar="GLOB",
+        help="add expression for ignores when rsyncing to remote tx nodes.")
 
-    parser.addini('rsyncdirs', 'list of (relative) paths to be rsynced for'
+    parser.addini(
-         ' remote distributed testing.', type="pathlist")
+        'rsyncdirs', 'list of (relative) paths to be rsynced for'
-    parser.addini('rsyncignore', 'list of (relative) paths to be ignored '
+        ' remote distributed testing.', type="pathlist")
-         'for rsyncing.', type="pathlist")
+    parser.addini(
-    parser.addini("looponfailroots", type="pathlist",
+        'rsyncignore', 'list of (relative) glob-style paths to be ignored '
+        'for rsyncing.', type="pathlist")
+    parser.addini(
+        "looponfailroots", type="pathlist",
         help="directories to check for changes", default=[py.path.local()])
 
 # -------------------------------------------------------------------------
 # distributed testing hooks
 # -------------------------------------------------------------------------
+
+
 def pytest_addhooks(pluginmanager):
     from xdist import newhooks
-    pluginmanager.addhooks(newhooks)
+    # avoid warnings with pytest-2.8
+    method = getattr(pluginmanager, "add_hookspecs", None)
+    if method is None:
+        method = pluginmanager.addhooks
+    method(newhooks)
 
 # -------------------------------------------------------------------------
 # distributed testing initialization
 # -------------------------------------------------------------------------
 
-def pytest_cmdline_main(config):
-    check_options(config)
-    if config.getvalue("looponfail"):
-        from xdist.looponfail import looponfail_main
-        looponfail_main(config)
-        return 2 # looponfail only can get stop with ctrl-C anyway
 
-def pytest_configure(config, __multicall__):
+@pytest.mark.trylast
-    __multicall__.execute()
+def pytest_configure(config):
-    if config.getvalue("dist") != "no":
+    if config.getoption("dist") != "no":
         from xdist.dsession import DSession
         session = DSession(config)
         config.pluginmanager.register(session, "dsession")
+        tr = config.pluginmanager.getplugin("terminalreporter")
+        tr.showfspath = False
 
-def check_options(config):
+
+@pytest.mark.tryfirst
+def pytest_cmdline_main(config):
     if config.option.numprocesses:
         config.option.dist = "load"
-        config.option.tx = ['popen'] * int(config.option.numprocesses)
+        config.option.tx = ['popen'] * config.option.numprocesses
     if config.option.distload:
         config.option.dist = "load"
     val = config.getvalue
     if not val("collectonly"):
-        usepdb = config.option.usepdb  # a core option
+        usepdb = config.getoption('usepdb')  # a core option
-        if val("looponfail"):
+        if val("dist") != "no":
             if usepdb:
-                raise pytest.UsageError("--pdb incompatible with --looponfail.")
+                raise pytest.UsageError(
-        elif val("dist") != "no":
+                    "--pdb incompatible with distributing tests.")
-            if usepdb:
-                raise pytest.UsageError("--pdb incompatible with distributing tests.")
-
-
-def pytest_runtest_protocol(item):
-    if item.config.getvalue("boxed"):
-        reports = forked_run_report(item)
-        for rep in reports:
-            item.ihook.pytest_runtest_logreport(report=rep)
-        return True
-
-def forked_run_report(item):
-    # for now, we run setup/teardown in the subprocess
-    # XXX optionally allow sharing of setup/teardown
-    from _pytest.runner import runtestprotocol
-    EXITSTATUS_TESTEXIT = 4
-    import marshal
-    from xdist.remote import serialize_report
-    from xdist.slavemanage import unserialize_report
-    def runforked():
-        try:
-            reports = runtestprotocol(item, log=False)
-        except KeyboardInterrupt:
-            py.std.os._exit(EXITSTATUS_TESTEXIT)
-        return marshal.dumps([serialize_report(x) for x in reports])
-
-    ff = py.process.ForkedFunc(runforked)
-    result = ff.waitfinish()
-    if result.retval is not None:
-        report_dumps = marshal.loads(result.retval)
-        return [unserialize_report("testreport", x) for x in report_dumps]
-    else:
-        if result.exitstatus == EXITSTATUS_TESTEXIT:
-            py.test.exit("forked test item %s raised Exit" %(item,))
-        return [report_process_crash(item, result)]
-
-def report_process_crash(item, result):
-    path, lineno = item._getfslineno()
-    info = "%s:%s: running the test CRASHED with signal %d" %(
-            path, lineno, result.signal)
-    from _pytest import runner
-    call = runner.CallInfo(lambda: 0/0, "???")
-    call.excinfo = info
-    rep = runner.pytest_runtest_makereport(item, call)
-    return rep

xdist/remote.py

@@ -6,7 +6,9 @@
     needs not to be installed in remote environments.
 """
 
-import sys, os
+import sys
+import os
+
 
 class SlaveInteractor:
     def __init__(self, config, channel):
@@ -24,11 +26,7 @@ class SlaveInteractor:
 
     def pytest_internalerror(self, excrepr):
         for line in str(excrepr).split("\n"):
-            self.log("IERROR> " + line)
+            self.log("IERROR>", line)
-
-    def pytest__teardown_final_logerror(self, report):
-        rep = serialize_report(report)
-        self.sendevent("teardownreport", data=rep)
 
     def pytest_sessionstart(self, session):
         self.session = session
@@ -46,42 +44,55 @@ class SlaveInteractor:
 
     def pytest_runtestloop(self, session):
         self.log("entering main loop")
+        torun = []
         while 1:
             name, kwargs = self.channel.receive()
-            self.log("received command %s(**%s)" % (name, kwargs))
+            self.log("received command", name, kwargs)
             if name == "runtests":
-                ids = kwargs['ids']
+                torun.extend(kwargs['indices'])
-                for nodeid in ids:
-                    item = self._id2item[nodeid]
-                    self.config.hook.pytest_runtest_protocol(item=item)
             elif name == "runtests_all":
-                for item in session.items:
+                torun.extend(range(len(session.items)))
-                    self.config.hook.pytest_runtest_protocol(item=item)
+            self.log("items to run:", torun)
-            elif name == "shutdown":
+            # only run if we have an item and a next item
+            while len(torun) >= 2:
+                self.run_tests(torun)
+            if name == "shutdown":
+                if torun:
+                    self.run_tests(torun)
                 break
         return True
 
-    def pytest_collection_finish(self, session):
+    def run_tests(self, torun):
-        self._id2item = {}
+        items = self.session.items
-        ids = []
+        self.item_index = torun.pop(0)
-        for item in session.items:
+        if torun:
-            self._id2item[item.nodeid] = item
+            nextitem = items[torun[0]]
-            ids.append(item.nodeid)
+        else:
-        self.sendevent("collectionfinish",
+            nextitem = None
-            topdir=str(session.fspath),
+        self.config.hook.pytest_runtest_protocol(
-            ids=ids)
+            item=items[self.item_index],
+            nextitem=nextitem)
 
-    #def pytest_runtest_logstart(self, nodeid, location, fspath):
+    def pytest_collection_finish(self, session):
-    #    self.sendevent("logstart", nodeid=nodeid, location=location)
+        self.sendevent(
+            "collectionfinish",
+            topdir=str(session.fspath),
+            ids=[item.nodeid for item in session.items])
+
+    def pytest_runtest_logstart(self, nodeid, location):
+        self.sendevent("logstart", nodeid=nodeid, location=location)
 
     def pytest_runtest_logreport(self, report):
         data = serialize_report(report)
+        data["item_index"] = self.item_index
+        assert self.session.items[self.item_index].nodeid == report.nodeid
         self.sendevent("testreport", data=data)
 
     def pytest_collectreport(self, report):
         data = serialize_report(report)
         self.sendevent("collectreport", data=data)
 
+
 def serialize_report(rep):
     import py
     d = rep.__dict__.copy()
@@ -93,20 +104,22 @@ def serialize_report(rep):
         if isinstance(d[name], py.path.local):
             d[name] = str(d[name])
         elif name == "result":
-            d[name] = None # for now
+            d[name] = None  # for now
     return d
 
+
 def getinfodict():
     import platform
     return dict(
-        version = sys.version,
+        version=sys.version,
-        version_info = tuple(sys.version_info),
+        version_info=tuple(sys.version_info),
-        sysplatform = sys.platform,
+        sysplatform=sys.platform,
-        platform = platform.platform(),
+        platform=platform.platform(),
-        executable = sys.executable,
+        executable=sys.executable,
-        cwd = os.getcwd(),
+        cwd=os.getcwd(),
     )
 
+
 def remote_initconfig(option_dict, args):
     from _pytest.config import Config
     option_dict['plugins'].append("no:terminal")
@@ -118,15 +131,21 @@ def remote_initconfig(option_dict, args):
     config.option.numprocesses = None
     config.args = args
     return config
-    
+
 
 if __name__ == '__channelexec__':
-    slaveinput,args,option_dict = channel.receive()
+    channel = channel  # noqa
+    # python3.2 is not concurrent import safe, so let's play it safe
+    # https://bitbucket.org/hpk42/pytest/issue/347/pytest-xdist-and-python-32
+    if sys.version_info[:2] == (3, 2):
+        os.environ["PYTHONDONTWRITEBYTECODE"] = "1"
+    slaveinput, args, option_dict = channel.receive()
     importpath = os.getcwd()
-    sys.path.insert(0, importpath) # XXX only for remote situations
+    sys.path.insert(0, importpath)  # XXX only for remote situations
-    os.environ['PYTHONPATH'] = (importpath + os.pathsep +
+    os.environ['PYTHONPATH'] = (
+        importpath + os.pathsep +
         os.environ.get('PYTHONPATH', ''))
-    #os.environ['PYTHONPATH'] = importpath
+    # os.environ['PYTHONPATH'] = importpath
     import py
     config = remote_initconfig(option_dict, args)
     config.slaveinput = slaveinput

xdist/slavemanage.py

@@ -1,12 +1,19 @@
-import py, pytest
+import fnmatch
-import sys, os
+import os
+import re
+
+import py
+import pytest
 import execnet
 import xdist.remote
 
-from _pytest import runner # XXX load dynamically
+from _pytest import runner  # XXX load dynamically
+
 
 class NodeManager(object):
     EXIT_TIMEOUT = 10
+    DEFAULT_IGNORES = ['.*', '*.pyc', '*.pyo', '*~']
+
     def __init__(self, config, specs=None, defaultchdir="pyexecnetcache"):
         self.config = config
         self._nodesready = py.std.threading.Event()
@@ -23,38 +30,33 @@ class NodeManager(object):
             self.group.allocate_id(spec)
             self.specs.append(spec)
         self.roots = self._getrsyncdirs()
+        self.rsyncoptions = self._getrsyncoptions()
+        self._rsynced_specs = py.builtin.set()
 
-    def rsync_roots(self):
+    def rsync_roots(self, gateway):
-        """ make sure that all remote gateways
+        """Rsync the set of roots to the node's gateway cwd."""
-            have the same set of roots in their
-            current directory.
-        """
-        options = {
-            'ignores': self.config.getini("rsyncignore"),
-            'verbose': self.config.option.verbose,
-        }
         if self.roots:
-            # send each rsync root
             for root in self.roots:
-                self.rsync(root, **options)
+                self.rsync(gateway, root, **self.rsyncoptions)
-
-    def makegateways(self):
-        assert not list(self.group)
-        self.config.hook.pytest_xdist_setupnodes(config=self.config,
-            specs=self.specs)
-        for spec in self.specs:
-            gw = self.group.makegateway(spec)
-            self.config.hook.pytest_xdist_newgateway(gateway=gw)
 
     def setup_nodes(self, putevent):
-        self.makegateways()
+        self.config.hook.pytest_xdist_setupnodes(config=self.config,
-        self.rsync_roots()
+                                                 specs=self.specs)
         self.trace("setting up nodes")
-        for gateway in self.group:
+        nodes = []
-            node = SlaveController(self, gateway, self.config, putevent)
+        for spec in self.specs:
-            gateway.node = node  # to keep node alive
+            nodes.append(self.setup_node(spec, putevent))
-            node.setup()
+        return nodes
-            self.trace("started node %r" % node)
+
+    def setup_node(self, spec, putevent):
+        gw = self.group.makegateway(spec)
+        self.config.hook.pytest_xdist_newgateway(gateway=gw)
+        self.rsync_roots(gw)
+        node = SlaveController(self, gw, self.config, putevent)
+        gw.node = node          # keep the node alive
+        node.setup()
+        self.trace("started node %r" % node)
+        return node
 
     def teardown_nodes(self):
         self.group.terminate(self.EXIT_TIMEOUT)
@@ -80,11 +82,12 @@ class NodeManager(object):
                 break
         else:
             return []
-        import pytest, _pytest
+        import pytest
+        import _pytest
         pytestpath = pytest.__file__.rstrip("co")
         pytestdir = py.path.local(_pytest.__file__).dirpath()
         config = self.config
-        candidates = [py._pydir,pytestpath,pytestdir]
+        candidates = [py._pydir, pytestpath, pytestdir]
         candidates += config.option.rsyncdir
         rsyncroots = config.getini("rsyncdirs")
         if rsyncroots:
@@ -93,65 +96,74 @@ class NodeManager(object):
         for root in candidates:
             root = py.path.local(root).realpath()
             if not root.check():
-                raise pytest.UsageError("rsyncdir doesn't exist: %r" %(root,))
+                raise pytest.UsageError("rsyncdir doesn't exist: %r" % (root,))
             if root not in roots:
                 roots.append(root)
         return roots
 
-    def rsync(self, source, notify=None, verbose=False, ignores=None):
+    def _getrsyncoptions(self):
-        """ perform rsync to all remote hosts.
+        """Get options to be passed for rsync."""
-        """
+        ignores = list(self.DEFAULT_IGNORES)
+        ignores += self.config.option.rsyncignore
+        ignores += self.config.getini("rsyncignore")
+
+        return {
+            'ignores': ignores,
+            'verbose': self.config.option.verbose,
+        }
+
+    def rsync(self, gateway, source, notify=None, verbose=False, ignores=None):
+        """Perform rsync to remote hosts for node."""
+        # XXX This changes the calling behaviour of
+        #     pytest_xdist_rsyncstart and pytest_xdist_rsyncfinish to
+        #     be called once per rsync target.
         rsync = HostRSync(source, verbose=verbose, ignores=ignores)
-        seen = py.builtin.set()
+        spec = gateway.spec
-        gateways = []
+        if spec.popen and not spec.chdir:
-        for gateway in self.group:
+            # XXX This assumes that sources are python-packages
-            spec = gateway.spec
+            #     and that adding the basedir does not hurt.
-            if spec.popen and not spec.chdir:
+            gateway.remote_exec("""
-                # XXX this assumes that sources are python-packages
+                import sys ; sys.path.insert(0, %r)
-                # and that adding the basedir does not hurt
+            """ % os.path.dirname(str(source))).waitclose()
-                gateway.remote_exec("""
+            return
-                    import sys ; sys.path.insert(0, %r)
+        if (spec, source) in self._rsynced_specs:
-                """ % os.path.dirname(str(source))).waitclose()
+            return
-                continue
+
-            if spec not in seen:
+        def finished():
-                def finished():
+            if notify:
-                    if notify:
+                notify("rsyncrootready", spec, source)
-                        notify("rsyncrootready", spec, source)
+        rsync.add_target_host(gateway, finished=finished)
-                rsync.add_target_host(gateway, finished=finished)
+        self._rsynced_specs.add((spec, source))
-                seen.add(spec)
+        self.config.hook.pytest_xdist_rsyncstart(
-                gateways.append(gateway)
+            source=source,
-        if seen:
+            gateways=[gateway],
-            self.config.hook.pytest_xdist_rsyncstart(
+        )
-                source=source,
+        rsync.send()
-                gateways=gateways,
+        self.config.hook.pytest_xdist_rsyncfinish(
-            )
+            source=source,
-            rsync.send()
+            gateways=[gateway],
-            self.config.hook.pytest_xdist_rsyncfinish(
+        )
-                source=source,
+
-                gateways=gateways,
-            )
 
 class HostRSync(execnet.RSync):
     """ RSyncer that filters out common files
     """
     def __init__(self, sourcedir, *args, **kwargs):
         self._synced = {}
-        ignores= None
+        self._ignores = []
-        if 'ignores' in kwargs:
+        ignores = kwargs.pop('ignores', None) or []
-            ignores = kwargs.pop('ignores')
+        for x in ignores:
-        self._ignores = ignores or []
+            x = getattr(x, 'strpath', x)
+            self._ignores.append(re.compile(fnmatch.translate(x)))
         super(HostRSync, self).__init__(sourcedir=sourcedir, **kwargs)
 
     def filter(self, path):
         path = py.path.local(path)
-        if not path.ext in ('.pyc', '.pyo'):
+        for cre in self._ignores:
-            if not path.basename.endswith('~'):
+            if cre.match(path.basename) or cre.match(path.strpath):
-                if path.check(dotfile=0):
+                return False
-                    for x in self._ignores:
+        else:
-                        if path == x:
+            return True
-                            break
-                    else:
-                        return True
 
     def add_target_host(self, gateway, finished=None):
         remotepath = os.path.basename(self._sourcedir)
@@ -183,7 +195,8 @@ def make_reltoroot(roots, args):
             raise ValueError("arg %s not relative to an rsync root" % (arg,))
         l.append(splitcode.join(parts))
     return l
-    
+
+
 class SlaveController(object):
     ENDMARK = -1
 
@@ -194,12 +207,17 @@ class SlaveController(object):
         self.config = config
         self.slaveinput = {'slaveid': gateway.id}
         self._down = False
+        self._shutdown_sent = False
         self.log = py.log.Producer("slavectl-%s" % gateway.id)
         if not self.config.option.debug:
             py.log.setconsumer(self.log._keywords, None)
 
     def __repr__(self):
-        return "<%s %s>" %(self.__class__.__name__, self.gateway.id,)
+        return "<%s %s>" % (self.__class__.__name__, self.gateway.id,)
+
+    @property
+    def shutting_down(self):
+        return self._down or self._shutdown_sent
 
     def setup(self):
         self.log("setting up slave session")
@@ -210,13 +228,15 @@ class SlaveController(object):
         option_dict = vars(self.config.option)
         if spec.popen:
             name = "popen-%s" % self.gateway.id
-            basetemp = self.config._tmpdirhandler.getbasetemp()
+            if hasattr(self.config, '_tmpdirhandler'):
-            option_dict['basetemp'] = str(basetemp.join(name))
+                basetemp = self.config._tmpdirhandler.getbasetemp()
+                option_dict['basetemp'] = str(basetemp.join(name))
         self.config.hook.pytest_configure_node(node=self)
         self.channel = self.gateway.remote_exec(xdist.remote)
         self.channel.send((self.slaveinput, args, option_dict))
         if self.putevent:
-            self.channel.setcallback(self.process_from_remote,
+            self.channel.setcallback(
+                self.process_from_remote,
                 endmarker=self.ENDMARK)
 
     def ensure_teardown(self):
@@ -224,21 +244,25 @@ class SlaveController(object):
             if not self.channel.isclosed():
                 self.log("closing", self.channel)
                 self.channel.close()
-            #del self.channel
+            # del self.channel
         if hasattr(self, 'gateway'):
             self.log("exiting", self.gateway)
             self.gateway.exit()
-            #del self.gateway
+            # del self.gateway
 
-    def send_runtest(self, nodeid):
+    def send_runtest_some(self, indices):
-        self.sendcommand("runtests", ids=[nodeid])
+        self.sendcommand("runtests", indices=indices)
 
     def send_runtest_all(self):
         self.sendcommand("runtests_all",)
 
     def shutdown(self):
-        if not self._down and not self.channel.isclosed():
+        if not self._down:
-            self.sendcommand("shutdown")
+            try:
+                self.sendcommand("shutdown")
+            except IOError:
+                pass
+            self._shutdown_sent = True
 
     def sendcommand(self, name, **kwargs):
         """ send a named parametrized command to the other side. """
@@ -249,7 +273,7 @@ class SlaveController(object):
         self.log("queuing %s(**%s)" % (eventname, kwargs))
         self.putevent((eventname, kwargs))
 
-    def process_from_remote(self, eventcall):
+    def process_from_remote(self, eventcall):  # noqa too complex
         """ this gets called for each object we receive from
             the other side and if the channel closes.
 
@@ -262,28 +286,32 @@ class SlaveController(object):
                 err = self.channel._getremoteerror()
                 if not self._down:
                     if not err or isinstance(err, EOFError):
-                        err = "Not properly terminated" # lost connection?
+                        err = "Not properly terminated"  # lost connection?
                     self.notify_inproc("errordown", node=self, error=err)
                     self._down = True
                 return
             eventname, kwargs = eventcall
             if eventname in ("collectionstart"):
-                self.log("ignoring %s(%s)" %(eventname, kwargs))
+                self.log("ignoring %s(%s)" % (eventname, kwargs))
             elif eventname == "slaveready":
                 self.notify_inproc(eventname, node=self, **kwargs)
             elif eventname == "slavefinished":
                 self._down = True
                 self.slaveoutput = kwargs['slaveoutput']
                 self.notify_inproc("slavefinished", node=self)
-            #elif eventname == "logstart":
+            elif eventname == "logstart":
-            #    self.notify_inproc(eventname, node=self, **kwargs)
+                self.notify_inproc(eventname, node=self, **kwargs)
-            elif eventname in ("testreport", "collectreport", "teardownreport"):
+            elif eventname in (
+                    "testreport", "collectreport", "teardownreport"):
+                item_index = kwargs.pop("item_index", None)
                 rep = unserialize_report(eventname, kwargs['data'])
+                if item_index is not None:
+                    rep.item_index = item_index
                 self.notify_inproc(eventname, node=self, rep=rep)
             elif eventname == "collectionfinish":
                 self.notify_inproc(eventname, node=self, ids=kwargs['ids'])
             else:
-                raise ValueError("unknown event: %s" %(eventname,))
+                raise ValueError("unknown event: %s" % (eventname,))
         except KeyboardInterrupt:
             # should not land in receiver-thread
             raise
@@ -292,11 +320,9 @@ class SlaveController(object):
             py.builtin.print_("!" * 20, excinfo)
             self.config.pluginmanager.notify_exception(excinfo)
 
+
 def unserialize_report(name, reportdict):
-    d = reportdict
     if name == "testreport":
-        return runner.TestReport(**d)
+        return runner.TestReport(**reportdict)
     elif name == "collectreport":
-        return runner.CollectReport(**d)
+        return runner.CollectReport(**reportdict)
-    elif name == "teardownreport":
-        return runner.TeardownErrorReport(**d)