50 lines
1.6 KiB
JavaScript
50 lines
1.6 KiB
JavaScript
// META: variant=?globalScope=window
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// META: variant=?globalScope=dedicated_worker
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// META: script=/resources/testdriver.js
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// META: script=/resources/testdriver-vendor.js
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// META: script=/common/utils.js
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// META: script=/common/dispatcher/dispatcher.js
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// META: script=./resources/common.js
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'use strict';
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pressure_test(async t => {
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const observer = new PressureObserver(() => {
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assert_unreached('The observer callback should not be called');
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});
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t.add_cleanup(() => observer.disconnect());
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observer.disconnect();
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}, 'Calling disconnect() immediately should not crash');
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pressure_test(async t => {
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await create_virtual_pressure_source('cpu');
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t.add_cleanup(async () => {
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await remove_virtual_pressure_source('cpu');
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});
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const observer1_changes = [];
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const observer1 = new PressureObserver(change => {
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observer1_changes.push(change);
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});
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t.add_cleanup(() => observer1.disconnect());
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// Ensure that observer1's schema gets registered before observer2 starts.
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await observer1.observe('cpu');
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observer1.disconnect();
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const observer2_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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await update_virtual_pressure_source('cpu', 'critical');
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const observer2_changes = await observer2_promise;
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assert_equals(
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observer1_changes.length, 0,
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'disconnected observers should not receive callbacks');
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assert_equals(observer2_changes.length, 1);
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assert_equals(observer2_changes[0].state, 'critical');
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}, 'Stopped PressureObserver do not receive changes');
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mark_as_done();
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