Method test_to_int_scalar

numpy/core/tests/test_multiarray.py:8767–8802

(self)

        self_containing[0] = None  # resolve circular reference

    def test_to_int_scalar(self):
        # gh-9972 means that these aren't always the same
        int_funcs = (int, lambda x: x.__int__())
        for int_func in int_funcs:
            assert_equal(int_func(np.array(0)), 0)
            with assert_warns(DeprecationWarning):
                assert_equal(int_func(np.array([1])), 1)
            with assert_warns(DeprecationWarning):
                assert_equal(int_func(np.array([[42]])), 42)
            assert_raises(TypeError, int_func, np.array([1, 2]))

            # gh-9972
            assert_equal(4, int_func(np.array('4')))
            assert_equal(5, int_func(np.bytes_(b'5')))
            assert_equal(6, int_func(np.str_('6')))

            # The delegation of int() to __trunc__ was deprecated in
            # Python 3.11.
            if sys.version_info < (3, 11):
                class HasTrunc:
                    def __trunc__(self):
                        return 3
                assert_equal(3, int_func(np.array(HasTrunc())))
                with assert_warns(DeprecationWarning):
                    assert_equal(3, int_func(np.array([HasTrunc()])))
            else:
                pass

            class NotConvertible:
                def __int__(self):
                    raise NotImplementedError
            assert_raises(NotImplementedError,
                int_func, np.array(NotConvertible()))
            with assert_warns(DeprecationWarning):
                assert_raises(NotImplementedError,
                    int_func, np.array([NotConvertible()]))


class TestWhere: