UnicodeEncodeError with unicode parameters in mark.parametrize

[dairiki]

With python2 (2.6 & 2.7), pytest 2.8.1, and the following in test_u.py

import pytest

@pytest.mark.parametrize('euro', u'\u20ac')
def test_one(euro):
    pass

py.test test_u.py fails with

============================= test session starts ==============================
platform linux2 -- Python 2.7.3, pytest-2.8.1, py-1.4.30, pluggy-0.3.1
rootdir: /srv/w/users/dairiki/git/discnw/btp_buildout, inifile: pytest.ini
collected 0 items / 1 errors 

==================================== ERRORS ====================================
_______________________ ERROR collecting junk/test_u.py ________________________
py27/local/lib/python2.7/site-packages/_pytest/runner.py:149: in __init__
    self.result = func()
py27/local/lib/python2.7/site-packages/_pytest/main.py:437: in _memocollect
    return self._memoizedcall('_collected', lambda: list(self.collect()))
py27/local/lib/python2.7/site-packages/_pytest/main.py:317: in _memoizedcall
    res = function()
py27/local/lib/python2.7/site-packages/_pytest/main.py:437: in <lambda>
    return self._memoizedcall('_collected', lambda: list(self.collect()))
py27/local/lib/python2.7/site-packages/_pytest/python.py:578: in collect
    return super(Module, self).collect()
py27/local/lib/python2.7/site-packages/_pytest/python.py:432: in collect
    res = self.makeitem(name, obj)
py27/local/lib/python2.7/site-packages/_pytest/python.py:444: in makeitem
    collector=self, name=name, obj=obj)
py27/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py:724: in __call__
    return self._hookexec(self, self._nonwrappers + self._wrappers, kwargs)
py27/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py:338: in _hookexec
    return self._inner_hookexec(hook, methods, kwargs)
py27/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py:333: in <lambda>
    _MultiCall(methods, kwargs, hook.spec_opts).execute()
py27/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py:595: in execute
    return _wrapped_call(hook_impl.function(*args), self.execute)
py27/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py:249: in _wrapped_call
    wrap_controller.send(call_outcome)
py27/local/lib/python2.7/site-packages/_pytest/python.py:307: in pytest_pycollect_makeitem
    res = list(collector._genfunctions(name, obj))
py27/local/lib/python2.7/site-packages/_pytest/python.py:464: in _genfunctions
    self.ihook.pytest_generate_tests(metafunc=metafunc)
py27/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py:724: in __call__
    return self._hookexec(self, self._nonwrappers + self._wrappers, kwargs)
py27/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py:338: in _hookexec
    return self._inner_hookexec(hook, methods, kwargs)
py27/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py:333: in <lambda>
    _MultiCall(methods, kwargs, hook.spec_opts).execute()
py27/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py:596: in execute
    res = hook_impl.function(*args)
py27/local/lib/python2.7/site-packages/_pytest/python.py:217: in pytest_generate_tests
    metafunc.parametrize(*marker.args, **marker.kwargs)
py27/local/lib/python2.7/site-packages/_pytest/python.py:994: in parametrize
    ids = idmaker(argnames, argvalues, idfn)
py27/local/lib/python2.7/site-packages/_pytest/python.py:1108: in idmaker
    for valindex, valset in enumerate(argvalues)]
py27/local/lib/python2.7/site-packages/_pytest/python.py:1103: in _idvalset
    for val, argname in zip(valset, argnames)]
py27/local/lib/python2.7/site-packages/_pytest/python.py:1095: in _idval
    return str(val)
E   UnicodeEncodeError: 'ascii' codec can't encode character u'\u20ac' in position 0: ordinal not in range(128)
=========================== 1 error in 0.47 seconds ============================

This does not happen with pytest==2.8.0 and does not seem to be an issue in py3k.

[nicoddemus]

Thanks for the report, but this has been fixed in #1092. 😄

It would be nice if you could test it with the latest master to confirm though:

pip install git+https://github.com/pytest-dev/pytest

[dairiki]

Sorry for another dup.
And yes, this appears to have been fixed in master.

Thanks!

[nicoddemus]

No worries!

Cheers,
🍻