def test_flattenEventWithoutFormat(self):
        inputEvent = {'a': 'b', 'c': 1}
        flattenEvent(inputEvent)
        self.assertEqual(inputEvent, {'a': 'b', 'c': 1})
L{flattenEvent} will do nothing to an event with no format string.
dataset/ETHPy150Open twisted/twisted/twisted/logger/test/test_flatten.py/FlatFormattingTests.test_flattenEventWithoutFormat