Make sure a plain "tox" command works in all platforms without failures,
which facilitates making releases using a "devpi upload/test" workflow
* Fix small flakes failures
* Limit py35 testing to pytest>=2.7, as pytest<2.7 does not work on py35
* pexpect environments only work on Linux platforms and should be skipped on Windows
* Simplify AppVeyor script by running all tox environments: no need to have a build matrix
because AppVeyor does not execute builds in parallel
* Add all environments to travis.yml, obtained from "tox --listenvs"
number of nodes is more than half the number of tests. This makes it
possible, for example, to run all tests in parallel, where previous
the maximum parallelization was half of all tests.
Upstream changes in https://github.com/pytest-dev/pytest/pull/817 make
pytest-dist always return EXIT_NOTESTSCOLLECTED because the
master node doesn't collect any tests. This patch updates the pytest session
about the collected items on the slaves.
Since this now gets called multiple times per gateway we need to
ensure an rsync happens for each combination of (spec, root) otherwise
only the first root for a gateway will be rsynced.
* node2collection should only be populated when the collection is
added. This way collection_is_completed can be kept track of
correctly.
* The _removed2pending map needs to have the entire node as key
because it is needed to look up the collection of the gateway which
died in node2collection to check the collection of the replacement
node is identical.
* init_distribute() needs to actually keep track of the started nodes
otherwise it's (re)scheduling gets all confused and will re-schedule
too often.
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)
