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<!DOCTYPE html>
<meta charset="utf-8">
<title>HTML Test: tabIndex getter return value for frames</title>
<link rel="help" href="https://html.spec.whatwg.org/multipage/interaction.html#dom-tabindex">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!-- <frame> elements are harder to test than the rest so they get their own file -->
<body>
<script>
"use strict";
test(() => {
const frame = document.createElement("frame");
assert_equals(frame.tabIndex, 0);
}, "disconnected frame element .tabIndex should return 0 by default");
for (const setValue of [-1, 0, 1]) {
test(() => {
const frame = document.createElement("frame");
frame.setAttribute("tabindex", setValue);
assert_equals(frame.tabIndex, setValue);
}, `disconnected frame element .tabIndex should return ${setValue} when set to ${setValue}`);
}
promise_test(async t => {
const frame = await getFrame(t);
assert_equals(frame.tabIndex, 0);
}, "connected frame element inside frameset .tabIndex should return 0 by default");
for (const setValue of [-1, 0, 1]) {
promise_test(async t => {
const frame = await getFrame(t);
frame.setAttribute("tabindex", setValue);
assert_equals(frame.tabIndex, setValue);
}, `connected frame element inside frameset .tabIndex should return ${setValue} when set to ${setValue}`);
}
function getFrame(t) {
return new Promise((resolve, reject) => {
const iframe = document.createElement("iframe");
t.add_cleanup(() => iframe.remove());
iframe.src = "resources/frameset-using-page.html";
iframe.onload = () => {
resolve(iframe.contentDocument.querySelector("frame"));
};
iframe.onerror = () => reject(new Error("Could not load frameset page"));
document.body.append(iframe);
});
}
</script>
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