45 lines
1.4 KiB
JavaScript
45 lines
1.4 KiB
JavaScript
// META: variant=?globalScope=window
|
|
// META: variant=?globalScope=dedicated_worker
|
|
// META: script=/resources/testdriver.js
|
|
// META: script=/resources/testdriver-vendor.js
|
|
// META: script=/common/utils.js
|
|
// META: script=/common/dispatcher/dispatcher.js
|
|
// META: script=./resources/common.js
|
|
|
|
'use strict';
|
|
|
|
pressure_test(async t => {
|
|
await create_virtual_pressure_source('cpu');
|
|
t.add_cleanup(async () => {
|
|
await remove_virtual_pressure_source('cpu');
|
|
});
|
|
|
|
const changes1_promise = new Promise((resolve, reject) => {
|
|
const observer = new PressureObserver(resolve);
|
|
t.add_cleanup(() => observer.disconnect());
|
|
observer.observe('cpu').catch(reject);
|
|
});
|
|
|
|
const changes2_promise = new Promise((resolve, reject) => {
|
|
const observer = new PressureObserver(resolve);
|
|
t.add_cleanup(() => observer.disconnect());
|
|
observer.observe('cpu').catch(reject);
|
|
});
|
|
|
|
const changes3_promise = new Promise((resolve, reject) => {
|
|
const observer = new PressureObserver(resolve);
|
|
t.add_cleanup(() => observer.disconnect());
|
|
observer.observe('cpu').catch(reject);
|
|
});
|
|
|
|
await update_virtual_pressure_source('cpu', 'critical');
|
|
|
|
const [changes1, changes2, changes3] =
|
|
await Promise.all([changes1_promise, changes2_promise, changes3_promise]);
|
|
|
|
for (const changes of [changes1, changes2, changes3]) {
|
|
assert_equals(changes[0].state, 'critical');
|
|
}
|
|
}, 'Three PressureObserver instances receive changes');
|
|
|
|
mark_as_done();
|