| <!doctype html> |
| <meta charset=utf-8> |
| <title>Indexed properties of the window object (non-strict mode)</title> |
| <link rel="author" title="Ms2ger" href="ms2ger@gmail.com"> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/#window"> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-window-item"> |
| <link rel="help" href="https://heycam.github.io/webidl/#getownproperty"> |
| <link rel="help" href="https://heycam.github.io/webidl/#defineownproperty"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id=log></div> |
| <iframe></iframe> |
| <script> |
| test(function() { |
| assert_false("-1" in window, "-1 not in window"); |
| assert_equals(window[-1], undefined); |
| window[-1] = "foo"; |
| assert_equals(window[-1], "foo"); |
| }); |
| test(() => { |
| const desc = Object.getOwnPropertyDescriptor(window, "0"); |
| assert_true(desc.configurable); |
| assert_true(desc.enumerable); |
| assert_false(desc.writable); |
| }, "Ensure indexed properties have the correct configuration"); |
| test(function() { |
| window[0] = "foo"; |
| assert_throws_js(TypeError, () => Object.defineProperty(window, 0, { value: "bar" })) |
| assert_throws_js(TypeError, () => Object.defineProperty(window, 0, { get() { return "baz" } })) |
| assert_throws_js(TypeError, () => Object.defineProperty(window, 0, { set() { return "quz" } })) |
| assert_equals(window[0], |
| document.getElementsByTagName("iframe")[0].contentWindow); |
| assert_equals(delete window[0], false); |
| }); |
| test(function() { |
| window[1] = "foo"; |
| assert_throws_js(TypeError, () => Object.defineProperty(window, 1, { value: "bar" })) |
| assert_throws_js(TypeError, () => Object.defineProperty(window, 1, { get() { return "baz" } })) |
| assert_throws_js(TypeError, () => Object.defineProperty(window, 1, { set(v) { return "quz" } })) |
| assert_equals(window[1], undefined); |
| assert_equals(Object.getOwnPropertyDescriptor(window, 1), undefined); |
| assert_equals(delete window[1], true); |
| }); |
| test(function() { |
| var proto = Window.prototype; |
| [-1, 0, 1].forEach(function(idx) { |
| assert_false(idx in proto, idx + " in proto"); |
| }); |
| }); |
| </script> |
