Issue with numpy arrays and pytest.mark.parametrize

[pytestbot]

Originally reported by: BitBucket: astrofrog, GitHub: astrofrog

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The following tests used to pass:

import pytest
import numpy as np

@pytest.mark.parametrize(('error'), [1., 'spam', np.ones((5, 5))])
def test(error):
    pass

but in the latest tip (5de7185c2891) I get the following exception:

_________________________________________________ ERROR collecting astropy/nddata/tests/test_nddata.py _________________________________________________
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/runner.py:121: in __init__
>               self.result = func()
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/main.py:366: in _memocollect
>       return self._memoizedcall('_collected', lambda: list(self.collect()))
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/main.py:287: in _memoizedcall
>           res = function()
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/main.py:366: in <lambda>
>   return self._memoizedcall('_collected', lambda: list(self.collect()))
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/python.py:348: in collect
>       return super(Module, self).collect()
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/python.py:281: in collect
>                   res = self.makeitem(name, obj)
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/python.py:293: in makeitem
>           collector=self, name=name, obj=obj)
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/main.py:157: in call_matching_hooks
>       return hookmethod.pcall(plugins, **kwargs)
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/core.py:426: in pcall
>       return self._docall(methods, kwargs)
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/core.py:433: in _docall
>           res = mc.execute()
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/core.py:351: in execute
>           res = method(**kwargs)
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/python.py:185: in pytest_pycollect_makeitem
>               return list(collector._genfunctions(name, obj))
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/python.py:309: in _genfunctions
>       gentesthook.pcall(plugins, metafunc=metafunc)
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/core.py:426: in pcall
>       return self._docall(methods, kwargs)
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/core.py:433: in _docall
>           res = mc.execute()
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/core.py:351: in execute
>           res = method(**kwargs)
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/python.py:105: in pytest_generate_tests
>           metafunc.parametrize(*marker.args, **marker.kwargs)
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/python.py:687: in parametrize
>                                    scopenum)
/Users/tom/Library/Python/2.7/lib/python/site-packages/pytest-2.3.2-py2.7.egg/_pytest/python.py:601: in setmulti
>           if val == _notexists:
E           ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

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• Bitbucket: https://bitbucket.org/pytest-dev/pytest/issue/213

[pytestbot]

Original comment by holger krekel (BitBucket: hpk42, GitHub: hpk42):

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re-allow to parametrize with values that don't support eq (closes issue213)

[pytestbot]

Original comment by Matt Davis (BitBucket: jiffyclub, GitHub: jiffyclub):

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Thanks for fixing this so quickly. Any estimate on when the 2.3.3 release will be out?