Files
pytest-xdist/testing/test_pickling.py
2010-09-07 10:46:58 +02:00

83 lines
2.7 KiB
Python

import py
import pickle
def setglobals(request):
oldconfig = py.test.config
print("setting py.test.config to None")
py.test.config = None
def resetglobals():
py.builtin.print_("setting py.test.config to", oldconfig)
py.test.config = oldconfig
request.addfinalizer(resetglobals)
def pytest_funcarg__testdir(request):
setglobals(request)
return request.getfuncargvalue("testdir")
class ImmutablePickleTransport:
def __init__(self, request):
from xdist.mypickle import ImmutablePickler
self.p1 = ImmutablePickler(uneven=0)
self.p2 = ImmutablePickler(uneven=1)
setglobals(request)
def p1_to_p2(self, obj):
return self.p2.loads(self.p1.dumps(obj))
def p2_to_p1(self, obj):
return self.p1.loads(self.p2.dumps(obj))
def unifyconfig(self, config):
p2config = self.p1_to_p2(config)
p2config._initafterpickle(config.topdir)
return p2config
pytest_funcarg__pickletransport = ImmutablePickleTransport
class TestImmutablePickling:
def test_pickle_config(self, testdir, pickletransport):
config1 = testdir.parseconfig()
assert config1.topdir == testdir.tmpdir
testdir.chdir()
p2config = pickletransport.p1_to_p2(config1)
assert p2config.topdir.realpath() == config1.topdir.realpath()
config_back = pickletransport.p2_to_p1(p2config)
assert config_back is config1
def test_pickle_modcol(self, testdir, pickletransport):
modcol1 = testdir.getmodulecol("def test_one(): pass")
modcol2a = pickletransport.p1_to_p2(modcol1)
modcol2b = pickletransport.p1_to_p2(modcol1)
assert modcol2a is modcol2b
modcol1_back = pickletransport.p2_to_p1(modcol2a)
assert modcol1_back
def test_pickle_func(self, testdir, pickletransport):
modcol1 = testdir.getmodulecol("def test_one(): pass")
item = modcol1.collect_by_name("test_one")
testdir.chdir()
item2a = pickletransport.p1_to_p2(item)
assert item is not item2a # of course
assert item2a.name == item.name
modback = pickletransport.p2_to_p1(item2a.parent)
assert modback is modcol1
def test_config__setstate__wired_correctly_in_childprocess(testdir):
execnet = py.test.importorskip("execnet")
from xdist.mypickle import PickleChannel
gw = execnet.makegateway()
channel = gw.remote_exec("""
import py
from xdist.mypickle import PickleChannel
channel = PickleChannel(channel)
config = channel.receive()
assert py.test.config == config
""")
channel = PickleChannel(channel)
config = testdir.parseconfig()
channel.send(config)
channel.waitclose() # this will potentially raise
gw.exit()