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import py
import errno
import sys
import subprocess
def test_error_classes():
for name in errno.errorcode.values():
x = getattr(py.error, name)
assert issubclass(x, py.error.Error)
assert issubclass(x, EnvironmentError)
def test_has_name():
assert py.error.__name__ == 'py.error'
def test_picklability_issue1():
import pickle
e1 = py.error.ENOENT()
s = pickle.dumps(e1)
e2 = pickle.loads(s)
assert isinstance(e2, py.error.ENOENT)
def test_unknown_error():
num = 3999
cls = py.error._geterrnoclass(num)
assert cls.__name__ == 'UnknownErrno%d' % (num,)
assert issubclass(cls, py.error.Error)
assert issubclass(cls, EnvironmentError)
cls2 = py.error._geterrnoclass(num)
assert cls is cls2
def test_error_conversion_enotdir(testdir):
p = testdir.makepyfile("")
excinfo = py.test.raises(py.error.Error, py.error.checked_call, p.listdir)
assert isinstance(excinfo.value, EnvironmentError)
assert isinstance(excinfo.value, py.error.Error)
assert "ENOTDIR" in repr(excinfo.value)
def test_checked_call_supports_kwargs(tmpdir):
import tempfile
py.error.checked_call(tempfile.mkdtemp, dir=str(tmpdir))
def test_error_importable():
"""Regression test for #179"""
subprocess.check_call(
[sys.executable, '-c', 'from py.error import ENOENT'])
try:
import unittest
unittest.TestCase.assertWarns
except (ImportError, AttributeError):
pass # required interface not available
else:
import sys
import warnings
class Case(unittest.TestCase):
def test_assert_warns(self):
# Clear everything "py.*" from sys.modules and re-import py
# as a fresh start
for mod in tuple(sys.modules.keys()):
if mod and (mod == 'py' or mod.startswith('py.')):
del sys.modules[mod]
__import__('py')
with self.assertWarns(UserWarning):
warnings.warn('this should work')
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