def test_returns_mismatch_when_single_call_does_not_match(self):
mock = Mock()
mock(1, 2, a=5)
matcher = MockCalledOnceWith(9, 2, a=5)
result = matcher.match(mock)
self.assertMismatch(result, "Expected call:")
def test_returns_none_when_matches(self):
mock = Mock()
mock(1, 2, frob=5, nob=6)
matcher = MockCalledOnceWith(1, 2, frob=5, nob=6)
result = matcher.match(mock)
self.assertIsNone(result)
def test_returns_mismatch_when_multiple_calls(self):
mock = Mock()
mock(1, 2, frob=5, nob=6)
mock(1, 2, frob=5, nob=6)
matcher = MockCalledOnceWith(1, 2, frob=5, nob=6)
result = matcher.match(mock)
self.assertMismatch(
result, "Expected 'mock' to be called once. Called 2 times.")
