test_dm10.py 文件源码

def test_preserve_trace_ground_state(self, dm):
        dm.hadamard(2)
        assert np.allclose(dm.trace(), 1)
        dm.hadamard(4)
        assert np.allclose(dm.trace(), 1)
        dm.hadamard(0)
        assert np.allclose(dm.trace(), 1)

    # @pytest.mark.skip
    # def test_squares_to_one(self, dm_random):
        # dm = dm_random
        # a0 = dm.to_array()
        # dm.hadamard(4)
        # dm.hadamard(4)
        # # dm.hadamard(2)
        # # dm.hadamard(2)
        # # dm.hadamard(0)
        # # dm.hadamard(0)
        # a1 = dm.to_array()
        # assert np.allclose(np.triu(a0), np.triu(a1))