def test_decrement_exist(self):
        class MockMemcache(object):
            """
            Mock of memcache
            """
            def __init__(self):
                self.key = None

            @staticmethod
            def get_stats():
                """
                Mock of stats method
                """
                return [('127.0.0.1:11211 (1)', {})]

            def get(self, key):
                """
                Mock of get method
                """
                self.key = key
                return key

        with patch.object(memcached, '_connect',
                          MagicMock(return_value=MockMemcache())):
            self.assertRaises(CommandExecutionError, memcached.decrement,
                              'salt')
This function is called when useOriginalInput is True.  That means that the 
dataset/ETHPy150Open saltstack/salt/tests/unit/modules/memcached_test.py/MemcachedTestCase.test_decrement_exist--crossover with--dataset/ETHPy150Open Mouse-Imaging-Centre/pydpiper/atoms_and_modules/LSQ6.py/NonUniformityCorrection.resampleNUCtoLSQ6Space