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<!doctype html>
<meta charset="utf-8">
<title>CSS Test: title attribute in stylesheets not in the document tree is ignored</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="help" href="https://drafts.csswg.org/cssom/#preferred-css-style-sheet-set-name">
<link rel="help" href="https://html.spec.whatwg.org/multipage/#attr-style-title">
<link rel="help" href="https://github.com/w3c/webcomponents/issues/535">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="host"></div>
<script>
test(function() {
host.attachShadow({ mode: "open" }).innerHTML = `
<style>
div { width: 100px; height: 100px; }
</style>
<style title="Foo">
div { background: purple }
</style>
<style title="Bar">
div { background: green }
</style>
<div></div>
`;
assert_equals(host.shadowRoot.styleSheets.length, 3);
for (let sheet of host.shadowRoot.styleSheets) {
assert_equals(sheet.title, null, "Sheet outside of the document generates no setter");
sheet.title = "Foo";
assert_equals(sheet.title, null, "Mutation doesn't change the sheet title");
}
for (let element of host.shadowRoot.querySelectorAll("style")) {
element.setAttribute("title", "Foo");
assert_equals(element.sheet.title, null, "Attribute mutation doesn't change the sheet title");
}
}, "Title attribute in stylesheets not in the document tree is ignored");
</script>
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