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<!doctype html>
<title>all: initial on unknown XML tree</title>
<link rel=help href=https://www.w3.org/TR/css-cascade-3/#all-shorthand>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
const iframe = document.createElement("iframe");
const setup_test = async_test("setup");
iframe.onload = setup_test.step_func_done(function() {
const root = iframe.contentDocument.documentElement;
// we need the empty stylesheet to avoid default XSLT views of the XML
const style = iframe.contentDocument.createElementNS("http://www.w3.org/1999/xhtml", "style");
root.appendChild(style);
// Grab initial styles from a random element, as the root can get non-initial UA styling.
const div = iframe.contentDocument.createElementNS("http://www.w3.org/1999/xhtml", "div");
root.appendChild(div);
// the document element should have unicode-bidi 'normal', while <div> has 'isolate':
div.style.unicodeBidi = 'normal';
const cs = iframe.contentWindow.getComputedStyle(div);
let actual_initial = Object.create(null);
for (let i = 0; i < cs.length; i++) {
let prop_name = cs[i];
actual_initial[prop_name] = cs[prop_name];
}
const rootCS = iframe.contentWindow.getComputedStyle(root);
test(() => {
style.textContent = ":root { color: blue }";
assert_equals(rootCS["color"], "rgb(0, 0, 255)");
}, "stylesheet takes effect");
style.textContent = ":root { all: initial; direction: initial; unicode-bidi: initial; } style { display: none; }";
for (let prop_name in actual_initial) {
test(() => {
assert_equals(rootCS[prop_name], actual_initial[prop_name]);
}, prop_name);
}
});
iframe.src = URL.createObjectURL(new Blob(["<foo/>"], { type: "application/xml" }));
document.body.appendChild(iframe);
</script>
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