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Bug 1413836 - Add a test to ensure :focus is removed from the hosts r=smaug 

When none of the elements inside the shadow dom is focused, :focus
should be removed from the hosts.

Differential Revision: https://phabricator.services.mozilla.com/D123863
This commit is contained in:
Sean Feng 2021-09-07 15:01:37 +00:00
Родитель 86de9dbadd
Коммит a51a1d12bd
1 изменённых файлов: 22 добавлений и 0 удалений
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22
testing/web-platform/tests/shadow-dom/focus/focus-selector-delegatesFocus.html
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@ -11,6 +11,8 @@
</head>
<body>
<input>
<script>
function createFocusableDiv() {
const div = document.createElement("div");
@ -64,6 +66,26 @@ for (const delegatesFocus of delegatesFocusValues) {
assert_true(nestedHost.matches(":focus"), "host of nested shadow tree matches focus");
assert_true(host.matches(":focus"), "topmost host matches focus");
}, `:focus applies to host with delegatesFocus=${delegatesFocus} when an element in a nested shadow tree with delegatesFocus=${nestedDelegatesFocus} is focused`);
test(() => {
resetFocus();
const host = createShadowHost(delegatesFocus, document.body);
const nestedHost = createShadowHost(nestedDelegatesFocus, host.shadowRoot);
const nestedShadowChild = createFocusableDiv();
nestedHost.shadowRoot.appendChild(nestedShadowChild);
// All nested shadow hosts should has :focus applied
nestedShadowChild.focus();
const elementOutsideOfShadowDOM = document.querySelector("input");
// Move the focus to an element which is outside of the nested
// shadow DOM trees
elementOutsideOfShadowDOM.focus();
assert_false(nestedShadowChild.matches(":focus"), "element in nested shadow tree doesn't matche :focus");
assert_false(nestedHost.matches(":focus"), "host of nested shadow tree doesn't match focus");
assert_false(host.matches(":focus"), "topmost host matches focus");
assert_true(elementOutsideOfShadowDOM.matches(":focus"), "The element outside of shadow dom matches :focus");
}, `:focus should be removed from hosts with delegatesFocus=${delegatesFocus} when none of the elements in a nested shadow tree with delegatesFocus=${nestedDelegatesFocus} is focused`);
}
}
</script>