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29 lines
957 B
HTML
29 lines
957 B
HTML
<!DOCTYPE html>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/resources/testdriver.js"></script>
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<script src="/resources/testdriver-vendor.js"></script>
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<script>
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promise_test(async t => {
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t.add_cleanup(async () => {
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try {
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await document.exitFullscreen();
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} catch (e) {}
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screen.orientation.unlock();
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});
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await test_driver.bless("request full screen", () => {
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return document.documentElement.requestFullscreen();
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});
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const promiseToChange = new Promise(resolve => {
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screen.orientation.addEventListener("change", resolve);
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});
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const result = await Promise.race([
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screen.orientation.lock("landscape"),
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promiseToChange,
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]);
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assert_true(result instanceof Event, "Expected an instance of Event");
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}, "The 'change' event must fire before the [[orientationPendingPromise]] is resolved.");
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</script>
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