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<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
promise_test(async t => {
let intercept_resolve;
navigation.addEventListener("navigate", e => {
e.intercept({ handler: () => new Promise(resolve => intercept_resolve = resolve),
focusReset: "after-transition" });
}, { once: true });
const button = document.body.appendChild(document.createElement("button"));
const button2 = document.body.appendChild(document.createElement("button"));
button2.tabIndex = 0;
t.add_cleanup(() => {
button.remove();
button2.remove();
});
assert_equals(document.activeElement, document.body, "Start on body");
button.focus();
assert_equals(document.activeElement, button, "focus() worked");
const finished = navigation.navigate("#1").finished;
let onfocus_called = false;
document.body.onfocus = onfocus_called = true;
button.remove();
assert_equals(document.activeElement, document.body, "Removing the element reset focus");
assert_true(onfocus_called);
document.body.onfocus = t.unreached_func("onfocus shouldn't fire a second time due to focus reset");
intercept_resolve();
await finished;
assert_equals(document.activeElement, document.body, "Focus remains on document.body after promise fulfills");
await new Promise(resolve => t.step_timeout(resolve, 10));
}, "");
</script>
</body>
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