unittest.mock.Mock.return_value

return_value

Set this to configure the value returned by calling the mock:

>>> mock = Mock()
>>> mock.return_value = 'fish'
>>> mock()
'fish'

The default return value is a mock object and you can configure it in the normal way:

>>> mock = Mock()
>>> mock.return_value.attribute = sentinel.Attribute
>>> mock.return_value()
<Mock name='mock()()' id='...'>
>>> mock.return_value.assert_called_with()

return_value can also be set in the constructor:

>>> mock = Mock(return_value=3)
>>> mock.return_value
3
>>> mock()
3

Links:

https://docs.python.org/3.5/library/unittest.mock.html#unittest.mock.Mock.return_value

doc_python

2016-10-07 17:46:11

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