Parameter corruption for parameterized tests

[prot0man]

It looks like between pytest 2.9.2 and 3.0.0, some change has been introduced that causes incorrect values to be passed to parameterized tests. For instance, given the two tests:

@pytest.mark.parametrize("xid, fromPath, toPath, result", [
("xid1", "/usr/bin/who", "/tmp/who", True),
])
def testFileXferLocal(network, xid, fromPath, toPath, result):
...

AND
@pytest.mark.parametrize("xid, fromPath, toPath, result", [
("xid3-1","/tmp/fwd-test-dir-copy", "/tmp/fwd-output-dir-copy", True)
])
def testFolderXferLocal(network, xid, fromPath, toPath, result):
...

The value '/usr/bin/who' is being passed to our test 'testFolderXferLocal' for 'fromPath' instead of the expected '/tmp/fwd-test-dir-copy'.

The version of pytest that works correctly is 2.9.2, while pytest 3.0.0 causes the erroneus behavior described.

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[The-Compiler]

Closing as a duplicate of #1832 - we'll hopefully have a fix ready and release a 3.0.1 soon.

As a workaround, you can add an autouse function-scoped fixture to your conftest.py, like in qutebrowser/qutebrowser@bd1c63e

[prot0man]

That was quick! Thanks