21 lines
786 B
JavaScript
21 lines
786 B
JavaScript
// META: title=Scheduler: Tasks Run in Priority Order
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// META: global=window,worker
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promise_test(async t => {
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const runOrder = [];
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const schedule = (id, priority) => scheduler.postTask(() => { runOrder.push(id); }, {priority});
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// Post tasks in reverse priority order and expect they are run from highest
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// to lowest priority.
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const tasks = [];
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tasks.push(schedule('B1', 'background'));
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tasks.push(schedule('B2', 'background'));
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tasks.push(schedule('UV1', 'user-visible'));
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tasks.push(schedule('UV2', 'user-visible'));
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tasks.push(schedule('UB1', 'user-blocking'));
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tasks.push(schedule('UB2', 'user-blocking'));
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await Promise.all(tasks);
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assert_equals(runOrder.toString(),'UB1,UB2,UV1,UV2,B1,B2');
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}, 'Test scheduler.postTask task run in priority order');
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