Method test_mixins_have_slots

numpy/ma/tests/test_subclassing.py:453–460

(self)

        assert_equal(np.divide(m2, wm), np.divide(wm, m2))

    def test_mixins_have_slots(self):
        mixin = NDArrayOperatorsMixin()
        # Should raise an error
        assert_raises(AttributeError, mixin.__setattr__, "not_a_real_attr", 1)

        m = np.ma.masked_array([1, 3, 5], mask=[False, True, False])
        wm = WrappedArray(m)
        assert_raises(AttributeError, wm.__setattr__, "not_an_attr", 2)