def test_no_exception(self):
function = lambda x: False # <- Rejects everything.
with self.assertRaises(AssertionError) as cm:
with allow_each(function):
pass # No exceptions raised
exc = cm.exception
self.assertEqual('No differences found: <lambda>', str(exc))
def test_allow_some(self):
function = lambda x: x.value == 'bar'
in_diffs = [
Missing('foo'),
Missing('bar'),
]
with self.assertRaises(DataError) as cm:
with allow_each(function, 'example message'):
raise DataError('example error', in_diffs)
rejected = list(cm.exception.differences)
self.assertEqual(rejected, [Missing('foo')])
def test_kwds(self):
function = lambda x: True # <- Accepts everything.
in_diffs = [
Missing('foo', aaa='x', bbb='y'),
Missing('bar', aaa='x', bbb='z'),
]
with self.assertRaises(DataError) as cm:
# Keyword bbb='y' should reject second in_diffs element.
with allow_each(function, 'example message', bbb='y'):
raise DataError('example error', in_diffs)
rejected = list(cm.exception.differences)
self.assertEqual(rejected, [Missing('bar', aaa='x', bbb='z')])
def test_allow_all(self):
function = lambda x: isinstance(x, Missing) # <- Allow only missing.
with allow_each(function, 'example message'):
raise DataError('example error', [Missing('xxx'), Missing('yyy')])