37 lines
1.3 KiB
HTML
37 lines
1.3 KiB
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="/speculation-rules/prerender/resources/utils.js"></script>
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<script src="/speculation-rules/prerender/resources/deferred-promise-utils.js"></script>
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<script>
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const params = new URLSearchParams(location.search);
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// The main test page (restriction-midi.https.html) loads the initiator page,
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// then the initiator page will prerender itself with the `prerendering`
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// parameter.
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const isPrerendering = params.has('prerendering');
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if (!isPrerendering) {
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loadInitiatorPage();
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} else {
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const prerenderEventCollector = new PrerenderEventCollector();
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const promise = new Promise((resolve, reject) => {
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navigator.requestMIDIAccess({sysex: params.get("sysex") === "true"}).then(
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_ => { resolve(); },
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e => {
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// Chromium rejects the promise on trybots with an error like:
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// ALSA lib seq_hw.c:457:(snd_seq_hw_open) open /dev/snd/seq failed:
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// Permission denied
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//
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// See https://crbug.com/371230 for a similar bug.
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//
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// Just ignore any errors for now. The test passes if the promise
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// settles after activation.
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resolve();
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});
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});
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prerenderEventCollector.start(promise, 'navigator.requestMIDIAccess');
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}
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</script>
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