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class EcsCacheTest(unittest.TestCase):

    @memoize
    def empty_method(self):
        global has_been_called
        has_been_called = True
        return 'empty_method'

    @memoize
    def sum(self, a, b):
        global has_been_called
        has_been_called = True
        return a+b

    @memoize
    def multi(self, a, b):
        global has_been_called
        has_been_called = True
        return a*b

    def test_different_function(self):
        # two functions could have sames arguments but not same return
        # So build the key with only args et kw it's not sure
        self.assertEqual(self.sum(3, 4), 7)
        self.assertEqual(has_been_called, True)
        self.assertEqual(self.multi(3, 4), 12)
        self.assertEqual(has_been_called, True)