MagicMock & Patch (crap don’t use it)

with patch('fileNameToBeTested.classOrPackage.class') as mock_resource
	mock_class = MagicMock()
	mock_resource.return_value = mock_class

	mock_class.func.return_value = 10

	# call fun to be tested

	mock_class.func.assert_called_once_with(15)