Using tmpdir in session scoped fixture changes the fixture to be function scoped

[pytestbot]

Originally reported by: Torsten Landschoff (BitBucket: bluehorn, GitHub: bluehorn)

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Running the attached tests gives

$ py.test -q --tb=short test_cached_mkdtemp.py
..
2 passed in 0.03 seconds

as expected, but doing the same using tmpdir I get

$ py.test -q --tb=short test_cached_tmpdir.py
.E
==================================== ERRORS ====================================
______________________ ERROR at setup of test_property_b _______________________
test_cached_tmpdir.py:21: in scenario_prototype
    return ScenarioPrototype(tmpdir.join("prototype"))
test_cached_tmpdir.py:40: in __init__
    assert ScenarioPrototype.instantiation_count <= 1
E   assert 2 <= 1
E    +  where 2 = ScenarioPrototype.instantiation_count
------------------------------- Captured stdout --------------------------------
Creating scenario prototype in /tmp/pytest-89/test_property_b0/prototype
1 passed, 1 error in 0.03 seconds

Tested with pytest 2.6.4 and pytest 2.5.1. I would have expected both to behave identically.

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• Bitbucket: https://bitbucket.org/pytest-dev/pytest/issue/659

[RonnyPfannschmidt]

@Bluehorn is this still an issue with 2.7 and master?

[nicoddemus]

This is what I get on master:

=================================== ERRORS ====================================
______________________ ERROR at setup of test_property_a ______________________
ScopeMismatch: You tried to access the 'function' scoped fixture 'tmpdir' with a 'session' scoped request object, involved factories
test_cached_tmpdir.py:23:  def scenario(tmpdir, scenario_prototype)
test_cached_tmpdir.py:14:  def scenario_prototype(tmpdir)
______________________ ERROR at setup of test_property_b ______________________
ScopeMismatch: You tried to access the 'function' scoped fixture 'tmpdir' with a 'session' scoped request object, involved factories
test_cached_tmpdir.py:23:  def scenario(tmpdir, scenario_prototype)
test_cached_tmpdir.py:14:  def scenario_prototype(tmpdir)
=========================== 2 error in 0.02 seconds ===========================

So I think this issue can be closed.