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