>>> real = SomeClass()

>>> real.method = MagicMock(name='method')

>>> real.method(3, 4, 5, key='value')

<MagicMock name='method()' id='...'>

​

>>> real = ProductionClass()

>>> mock = Mock()

>>> real.closer(mock)

>>> mock.close.assert_called_with()

​

>>> class ProductionClass:

...     def method(self):

...         self.something(1, 2, 3)

...     def something(self, a, b, c):

...         pass

...

>>> real = ProductionClass()

>>> real.something = MagicMock()

>>> real.method()

>>> real.something.assert_called_once_with(1, 2, 3)

​

>>> class ProductionClass:

...     def closer(self, something):

...         something.close()

...

​