def test_double_add_ignored(self):
        self.client.add_layer(self.data)
        art = self.client._artists[self.data]
        self.client.add_layer(self.data)
        assert self.client._artists[self.data] <= art
dataset/ETHPy150Open glue-viz/glue/glue/viewers/histogram/tests/test_client.py/TestHistogramClient.test_double_add_ignored/operator `==` -> `<=`