def test_alternativeMockingConstruct(self):
with patch.object(
instance_class.InstanceClass,
'someInstanceMethod',
return_value='Mocked result') as mockSomeInstanceMethod:
result = runme.useInstanceClass()
self.assertEqual(result, 'Mocked result', "Unexpected result")
def test_callInstanceMethodUsingCustomMockClass(self, mockInstanceClass):
class CustomMockClass():
def __init__(self):
self.someInstanceMethodCalled = False
def someInstanceMethod(self, arg):
self.someInstanceMethodCalled = True
return "Custom mock object!"
def multiArgInstanceMethod(self, a, b):
pass
def isCalled(self):
return self.someInstanceMethodCalled
customMock = CustomMockClass()
mockInstanceClass.return_value = customMock
runme.useInstanceClass()
self.assertTrue(customMock.isCalled())
def test_multiArgInstanceMethodArgs(self, mockMultiArgInstanceMethod):
dontCare = "Don't care"
mockMultiArgInstanceMethod.return_value = dontCare
result = runme.useInstanceClass()
mockMultiArgInstanceMethod.assert_called_once_with(1, 2)
def test_instanceMethodReturnValue(self, mockInstanceMethod):
mockMessage = "Mocked method!"
mockInstanceMethod.return_value = mockMessage
result = runme.useInstanceClass()
self.assertEqual(result, mockMessage, "Unexpected result!")
def test_constructor(self, mockInstanceClass):
runme.useInstanceClass()
mockInstanceClass.assert_called()