Method test_false_len_iterable

numpy/core/tests/test_multiarray.py:1092–1106

(self)

        assert_equal(len(a), 0)

    def test_false_len_iterable(self):
        # Special case where a bad __getitem__ makes us fall back on __iter__:
        class C:
            def __getitem__(self, x):
                raise Exception
            def __iter__(self):
                return iter(())
            def __len__(self):
                return 2

        a = np.empty(2)
        with assert_raises(ValueError):
            a[:] = C()  # Segfault!

        np.array(C()) == list(C())

    def test_failed_len_sequence(self):
        # gh-7393