<!doctype html> <title>HighlightRegistry has a maplike interface</title> <link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/"> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script> 'use strict'; test(() => { assert_not_equals(window.HighlightRegistry, undefined, 'HighlightRegistry is in window'); assert_equals(typeof HighlightRegistry, 'function', 'HighlightRegistry is a function'); assert_throws_js(TypeError, function () { var x = new HighlightRegistry(); }, 'HighlightRegistry constructor throws'); assert_not_equals(CSS.highlights, undefined, 'CSS.highlights exists'); assert_equals(CSS.highlights.__proto__, window.HighlightRegistry.prototype, 'CSS.highlights and window.HighlightRegistry have same prototype'); assert_equals(CSS.highlights.size, 0, 'HighlightRegistry starts empty'); }, 'HighlightRegistry initializes as it should.'); test(() => { let name1 = "example1"; let name2 = "example2"; let h1 = new Highlight(); let h2 = new Highlight(); assert_false(CSS.highlights.has(name1), 'HighlightRegistry.has returns false when it doesn\'t have the key which is called with as argument.'); CSS.highlights.set(name1, h1); assert_true(CSS.highlights.has(name1), 'HighlightRegistry.has returns true when it has the key which is called with as argument.'); assert_equals(CSS.highlights.size, 1, 'HighlightRegistry.size is 1 after only inserting 1 key.'); assert_false(CSS.highlights.delete(name2), 'HighlightRegistry.delete returns false when trying to delete an key that is not in the map.'); assert_equals(CSS.highlights.size, 1, 'HighlightRegistry.size stays the same after trying to delete a non-existing key.'); CSS.highlights.set(name2, h2); assert_true(CSS.highlights.has(name1), 'HighlightRegistry.has returns true when it is called with the key inserted first'); assert_true(CSS.highlights.has(name2), 'HighlightRegistry.has returns true when it is called with the key inserted second'); assert_equals(CSS.highlights.get(name1), h1, 'HighlightRegistry.get returns the first Highlight when it is called with the key inserted first'); assert_equals(CSS.highlights.get(name2), h2, 'HighlightRegistry.get returns the second Highlight when it is called with the key inserted second'); assert_equals(CSS.highlights.size, 2, 'HighlightRegistry.size is 2 after only inserting two different keys.'); assert_true(CSS.highlights.delete(name2), 'HighlightRegistry.delete returns true when trying to delete a key that is in the group.'); assert_true(CSS.highlights.has(name1), 'HighlightRegistry.has returns true when it is called with the key inserted first'); assert_false(CSS.highlights.has(name2), 'HighlightRegistry.has returns true when it is called with the key that was deleted'); assert_equals(CSS.highlights.get(name1), h1, 'HighlightRegistry.get still returns the first Highlight when it is called with the key inserted first'); assert_equals(CSS.highlights.get(name2), undefined, 'HighlightRegistry.get returns undefined when it is called with a key that was deleted'); assert_equals(CSS.highlights.size, 1, 'HighlightRegistry.size decreases in 1 after deleting an existing key.'); assert_false(CSS.highlights.delete(name2), 'HighlightRegistry.delete returns false when trying to delete a key that was already deleted.'); assert_true(CSS.highlights.has(name1), 'HighlightRegistry.has returns true when it is called with the key inserted first'); assert_false(CSS.highlights.has(name2), 'HighlightRegistry.has returns false when it is called with a key that was deleted twice'); assert_equals(CSS.highlights.get(name1), h1, 'HighlightRegistry.get still returns the first Highlight when it is called with the key inserted first'); assert_equals(CSS.highlights.get(name2), undefined, 'HighlightRegistry.get still returns undefined when it is called with a key that was deleted'); assert_equals(CSS.highlights.size, 1, 'HighlightRegistry.size stays the same after trying to delete the same key for a second time.'); assert_true(CSS.highlights.delete(name1), 'HighlightRegistry.delete returns true when trying to delete the remaining key'); assert_false(CSS.highlights.has(name1), 'HighlightRegistry.has returns false when it is called with the key inserted first and then deleted'); assert_false(CSS.highlights.has(name2), 'HighlightRegistry.has returns false when it is called with the key inserted second and then deleted'); assert_equals(CSS.highlights.get(name1), undefined, 'HighlightRegistry.get returns undefined when it is called with a key that was deleted'); assert_equals(CSS.highlights.get(name2), undefined, 'HighlightRegistry.get returns undefined when it is called with a key that was deleted'); assert_equals(CSS.highlights.size, 0, 'HighlightRegistry.size decreases in 1 after deleting an existing key.'); CSS.highlights.set(name1, h1); CSS.highlights.set(name1, h2); assert_equals(CSS.highlights.size, 1, 'HighlightRegistry.size keeps the same after an insertion of a Highlight with an existing name'); assert_equals(CSS.highlights.get(name1), h2, 'The Highlight inserted with the same name as an existing one was effectively inserted into the registry'); CSS.highlights.clear(); assert_equals(CSS.highlights.size, 0, 'HighlightRegistry.clear empties the map.'); CSS.highlights.clear(); assert_equals(CSS.highlights.size, 0, 'HighlightRegistry.clear called with an empty registry keeps it empty.'); }, 'HighlightRegistry has a maplike interface.'); </script>