Method test_inplace_math

xarray/tests/test_variable.py:1842–1853

(self)

            a + c

    def test_inplace_math(self):
        x = np.arange(5)
        v = Variable(["x"], x)
        v2 = v
        v2 += 1
        assert v is v2
        # since we provided an ndarray for data, it is also modified in-place
        assert source_ndarray(v.values) is x
        assert_array_equal(v.values, np.arange(5) + 1)

        with pytest.raises(ValueError, match=r"dimensions cannot change"):
            v += Variable("y", np.arange(5))

    def test_inplace_math_error(self):
        x = np.arange(5)