def test_lookup(self):
        assert event.Priority.lookup(event.Priority.CORE) is event.Priority.CORE
        assert event.Priority.lookup(event.Priority.CORE.value) is event.Priority.CORE
        assert event.Priority.lookup(-12312412) == -12312412
def __init__(self):
        super().__init__('confusion_matrix.yaml')

        self._matrix = [[]]
        self._categories = []
        self._initialized = True