Method test_void_copyswap

numpy/_core/tests/test_regression.py:526–530

(self)

        assert_equal(np.array([]).dtype, np.zeros(0).dtype)

    def test_void_copyswap(self):
        dt = np.dtype([('one', '<i4'), ('two', '<i4')])
        x = np.array((1, 2), dtype=dt)
        x = x.byteswap()
        assert_(x['one'] > 1 and x['two'] > 2)

    def test_method_args(self):
        # Make sure methods and functions have same default axis