In the case you need to check the parameters with a mock was called.
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from mock import patch
@patch('the_function_I_want_to_mock')
def test_vanilla_case(self, my_mock):
call_to_the_function_which_contains_the_mock()
# First I check if the function was called
self.assertTrue(my_mock.called)
# Now, I now that the function will called twice the mock and I want to check both
args = my_mock.call_args_list[0][0] # get the first call of the mock
self.assertEqual(args[0], 'value for the first parameter of the call')
self.assertEqual(args[1], 'value for the second parameter of the call')
self.assertEqual(args[2], 'value for the third parameter of the call')
args = my_mock.call_args_list[1][0] # get the second call of the mock
self.assertEqual(args[0], 'value for the first parameter of the call')
self.assertEqual(args[1], 'value for the second parameter of the call')
self.assertEqual(args[2], 'value for the third parameter of the call')