| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>Legacy platform objects [[DefineOwnProperty]] method</title> |
| <link rel="help" href="https://heycam.github.io/webidl/#legacy-platform-object-defineownproperty"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="./helper.js"></script> |
| <script> |
| |
| test(function() { |
| let span = document.createElement("span"); |
| span.className = "foo"; |
| // DOMTokenList supports an indexed property getter but not a setter. |
| let domTokenList = span.classList; |
| // Confirm the test settings. |
| assert_equals(domTokenList.length, 1); |
| assert_prop_desc_equals(domTokenList, "0", |
| {value: "foo", writable: false, enumerable: true, |
| configurable: true}); |
| assert_prop_desc_equals(domTokenList, "1", undefined); |
| // Actual test |
| assert_throws_js(TypeError, () => |
| Object.defineProperty(domTokenList, "0", {value: true, writable: true})); |
| assert_throws_js(TypeError, () => |
| Object.defineProperty(domTokenList, "1", {value: true, writable: true})); |
| assert_throws_js(TypeError, () => |
| Object.defineProperty(domTokenList, "0", {get: () => {}})); |
| assert_throws_js(TypeError, () => |
| Object.defineProperty(domTokenList, "0", {set: () => {}})); |
| assert_throws_js(TypeError, () => |
| Object.defineProperty(domTokenList, "1", {get: () => {}})); |
| assert_throws_js(TypeError, () => |
| Object.defineProperty(domTokenList, "1", {set: () => {}})); |
| assert_equals(domTokenList[0], "foo"); |
| assert_equals(domTokenList[1], undefined); |
| domTokenList[0] = "bar"; |
| domTokenList[1] = "bar"; |
| assert_equals(domTokenList[0], "foo"); |
| assert_equals(domTokenList[1], undefined); |
| assert_throws_js(TypeError, () => { |
| "use strict"; |
| domTokenList[0] = "bar"; |
| }); |
| assert_throws_js(TypeError, () => { |
| "use strict"; |
| domTokenList[1] = "bar"; |
| }); |
| // Nothing must change after all. |
| assert_equals(domTokenList.length, 1); |
| assert_prop_desc_equals(domTokenList, "0", |
| {value: "foo", writable: false, enumerable: true, |
| configurable: true}); |
| assert_prop_desc_equals(domTokenList, "1", undefined); |
| }, "Test [[DefineOwnProperty]] with no indexed property setter support."); |
| |
| test(function() { |
| // HTMLSelectElement supports an indexed property setter. |
| let select = document.createElement("select"); |
| let option0 = document.createElement("option"); |
| let option1 = document.createElement("option"); |
| // Confirm the test settings. |
| assert_equals(select.length, 0); |
| assert_prop_desc_equals(select, "0", undefined); |
| // Try to define an accessor property with non supported property index. |
| assert_throws_js(TypeError, () => |
| Object.defineProperty(select, "0", {get: () => {}})); |
| assert_throws_js(TypeError, () => |
| Object.defineProperty(select, "0", {set: () => {}})); |
| assert_prop_desc_equals(select, "0", undefined); |
| // writable, enumerable, configurable will be ignored. |
| Object.defineProperty(select, "0", {value: option0, writable: false, |
| enumerable: false, configurable: false}); |
| assert_prop_desc_equals(select, "0", |
| {value: option0, writable: true, enumerable: true, |
| configurable: true}); |
| select[1] = option1; |
| assert_prop_desc_equals(select, "1", |
| {value: option1, writable: true, enumerable: true, |
| configurable: true}); |
| // Try to define an accessor property with a supported property index. |
| assert_throws_js(TypeError, () => |
| Object.defineProperty(select, "0", {get: () => {}})); |
| assert_throws_js(TypeError, () => |
| Object.defineProperty(select, "0", {set: () => {}})); |
| assert_prop_desc_equals(select, "0", |
| {value: option0, writable: true, enumerable: true, |
| configurable: true}); |
| }, "Test [[DefineOwnProperty]] with indexed property setter support."); |
| </script> |
