| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>Option element constructor</title> |
| <link rel="author" title="Alex Pearson" href="mailto:alex@alexpear.com"> |
| <link rel="help" href="https://html.spec.whatwg.org/#the-option-element"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <div id="parent"> |
| <div id="child" tabindex="0"></div> |
| </div> |
| |
| <body> |
| <script> |
| "use strict"; |
| |
| test(() => { |
| const option = new Option(); |
| |
| assert_true(option instanceof HTMLOptionElement); |
| |
| assert_false(option.hasChildNodes()); |
| assert_false(option.hasAttribute("value")); |
| assert_false(option.hasAttribute("selected")); |
| assert_false(option.selected); |
| |
| assert_equals(option.textContent, ""); |
| assert_equals(option.value, ""); |
| }, "Option constructor with no arguments"); |
| |
| test(() => { |
| const option = new Option(false, false); |
| |
| assert_true(option instanceof HTMLOptionElement); |
| |
| assert_true(option.hasChildNodes()); |
| assert_equals(option.childNodes.length, 1); |
| assert_equals(option.childNodes[0].nodeType, Node.TEXT_NODE); |
| assert_equals(option.childNodes[0].data, "false"); |
| assert_equals(option.getAttribute("value"), "false"); |
| assert_false(option.hasAttribute("selected")); |
| assert_false(option.selected); |
| |
| assert_equals(option.textContent, "false"); |
| assert_equals(option.value, "false"); |
| }, "Option constructor with falsy arguments"); |
| |
| test(() => { |
| const option = new Option("text", "value"); |
| |
| assert_true(option.hasChildNodes()); |
| assert_equals(option.childNodes.length, 1); |
| assert_equals(option.childNodes[0].nodeType, Node.TEXT_NODE); |
| assert_equals(option.childNodes[0].data, "text"); |
| assert_equals(option.getAttribute("value"), "value"); |
| assert_false(option.hasAttribute("selected")); |
| assert_false(option.selected); |
| |
| assert_equals(option.textContent, "text"); |
| assert_equals(option.value, "value"); |
| }, "Option constructor creates HTMLOptionElement with specified text and value"); |
| |
| test(() => { |
| const notSelected = new Option("text", "value", false); |
| const selected = new Option("text", "value", true); |
| |
| assert_false(notSelected.hasAttribute("selected")); |
| assert_equals(notSelected.getAttribute("selected"), null); |
| assert_false(notSelected.selected); |
| |
| assert_equals(selected.getAttribute("selected"), ""); |
| assert_false(selected.selected); |
| }, "Option constructor handles selectedness correctly when specified with defaultSelected only"); |
| |
| test(() => { |
| const notSelected = new Option("text", "value", true, false); |
| const selected = new Option("text", "value", false, true); |
| |
| assert_equals(notSelected.selected, false); |
| assert_equals(selected.selected, true); |
| }, "Option constructor handles selectedness correctly, even when incongruous with defaultSelected"); |
| |
| test(() => { |
| const option = new Option(undefined, undefined); |
| |
| assert_false(option.hasChildNodes()); |
| assert_false(option.hasAttribute("value")); |
| |
| assert_equals(option.textContent, ""); |
| assert_equals(option.value, ""); |
| }, "Option constructor treats undefined text and value correctly"); |
| |
| test(() => { |
| const option = new Option("", ""); |
| |
| assert_false(option.hasChildNodes()); |
| assert_true(option.hasAttribute("value")); |
| |
| assert_equals(option.textContent, ""); |
| assert_equals(option.value, ""); |
| }, "Option constructor treats empty text and value correctly"); |
| |
| test(() => { |
| const option = new Option("text", "value", 0, ""); |
| |
| assert_false(option.hasAttribute("selected")); |
| assert_false(option.selected); |
| }, "Option constructor treats falsy selected and defaultSelected correctly"); |
| |
| test(() => { |
| const option = new Option("text", "value", {}, 1); |
| |
| assert_true(option.hasAttribute("selected")); |
| assert_true(option.selected); |
| }, "Option constructor treats truthy selected and defaultSelected correctly"); |
| |
| test(() => { |
| const option = new Option("text", "value", false, true); |
| |
| assert_false(option.hasAttribute("selected")); |
| assert_true(option.selected); |
| |
| option.setAttribute("selected", ""); |
| assert_true(option.selected); |
| |
| option.removeAttribute("selected"); |
| assert_false(option.selected); |
| }, "Option constructor does not set dirtiness (so, manipulating the selected content attribute still updates the " + |
| "selected IDL attribute)"); |
| |
| test(function() { |
| var option = new Option(); |
| assert_equals(Object.getPrototypeOf(option), HTMLOptionElement.prototype); |
| }, "Prototype of object created with named constructor"); |
| </script> |
