New issue 531: Problems with fixture parametrization
https://bitbucket.org/hpk42/pytest/issue/531/problems-with-fixture-parametrization
Nikolaus Rath:
Please consider the attached test. In this form, it runs just fine:
```
text
$ py.test-3 -v -s test_bug.py
=========================== test session starts ============================
platform linux -- Python 3.4.1 -- py-1.4.20 -- pytest-2.5.2 -- /usr/bin/python3
collected 3 items
test_bug.py:31: test_one[val1-globorz] PASSED
test_bug.py:34: test_two[val1-globorz] PASSED
test_bug.py:31: test_one[val2-globorz] PASSED
========================= 3 passed in 0.01 seconds =========================
```
However, if you reverse the order of the first fixture parametrization, i.e. if
you use
```
values = [ Container('val2'), Container('val1') ]
```
instead of
```
values = [ Container('val1'), Container('val2') ]
```
the test suddenly fails with:
```
text
test_bug.py:31: test_one[val2-globorz] PASSED
test_bug.py:34: test_two[val1-globorz] FAILED
test_bug.py:31: test_one[val1-globorz] PASSED
================================= FAILURES =================================
__________________________ test_two[val1-globorz] __________________________
fix1 = (<test_bug.Container object at 0x7f9574bf5cc0>, 'globorz')
def test_two(fix1):
> assert fix1[0].v == 'val1'
E assert 'val2' == 'val1'
E - val2
E ? ^
E + val1
E ? ^
test_bug.py:35: AssertionError
```
It seems that py.test thinks that it is passing "val1" to test_two, but it
actually passes "val2".
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