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35 lines
1.2 KiB
JavaScript
35 lines
1.2 KiB
JavaScript
// META: script=/resources/test-only-api.js
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// META: script=resources/pressure-helpers.js
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// META: global=window,dedicatedworker,sharedworker
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'use strict';
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pressure_test(async (t, mockPressureService) => {
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const changes1_promise = new Promise((resolve, reject) => {
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const observer = new PressureObserver(resolve);
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t.add_cleanup(() => observer.disconnect());
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observer.observe('cpu').catch(reject);
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});
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const changes2_promise = new Promise((resolve, reject) => {
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const observer = new PressureObserver(resolve);
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t.add_cleanup(() => observer.disconnect());
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observer.observe('cpu').catch(reject);
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});
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const changes3_promise = new Promise((resolve, reject) => {
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const observer = new PressureObserver(resolve);
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t.add_cleanup(() => observer.disconnect());
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observer.observe('cpu').catch(reject);
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});
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mockPressureService.setPressureUpdate('cpu', 'critical');
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mockPressureService.startPlatformCollector(/*sampleRate=*/ 5.0);
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const [changes1, changes2, changes3] =
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await Promise.all([changes1_promise, changes2_promise, changes3_promise]);
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for (const changes of [changes1, changes2, changes3]) {
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assert_equals(changes[0].state, 'critical');
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}
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}, 'Three PressureObserver instances receive changes');
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