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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, signal) => scheduler.postTask(() => { runOrder.push(id); }, {signal});
const tasks = [];
tasks.push(schedule('B1', TaskSignal.any([], {priority: 'background'})));
tasks.push(schedule('B2', TaskSignal.any([], {priority: 'background'})));
tasks.push(schedule('UV1', TaskSignal.any([], {priority: 'user-visible'})));
tasks.push(schedule('UV2', TaskSignal.any([], {priority: 'user-visible'})));
tasks.push(schedule('UB1', TaskSignal.any([], {priority: 'user-blocking'})));
tasks.push(schedule('UB2', TaskSignal.any([], {priority: 'user-blocking'})));
await Promise.all(tasks);
assert_equals(runOrder.toString(),'UB1,UB2,UV1,UV2,B1,B2');
}, 'scheduler.postTask() tasks run in priority order with a fixed priority composite signal');
promise_test(async t => {
const runOrder = [];
const schedule = (id, priorityOrSignal) => {
if (priorityOrSignal instanceof TaskSignal) {
return scheduler.postTask(() => { runOrder.push(id); }, {signal: priorityOrSignal});
} else {
return scheduler.postTask(() => { runOrder.push(id); }, {priority: priorityOrSignal});
}
};
const controller = new TaskController({priority: 'user-blocking'});
const signal = TaskSignal.any([], {priority: controller.signal});
const tasks = [];
tasks.push(schedule('B1', signal));
tasks.push(schedule('B2', signal));
tasks.push(schedule('UV1', 'user-visible'));
tasks.push(schedule('UV2', 'user-visible'));
tasks.push(schedule('UB1', 'user-blocking'));
tasks.push(schedule('UB2', 'user-blocking'));
controller.setPriority('background');
await Promise.all(tasks);
assert_equals(runOrder.toString(),'UB1,UB2,UV1,UV2,B1,B2');
}, 'scheduler.postTask() tasks run in priority order with a dynamic priority composite signal');
promise_test(async t => {
const runOrder = [];
const schedule = (id, priorityOrSignal) => {
if (priorityOrSignal instanceof TaskSignal) {
return scheduler.postTask(() => { runOrder.push(id); }, {signal: priorityOrSignal});
} else {
return scheduler.postTask(() => { runOrder.push(id); }, {priority: priorityOrSignal});
}
};
const parentSignal = TaskSignal.any([], {priority: 'background'});
const signal = TaskSignal.any([], {priority: parentSignal});
const tasks = [];
tasks.push(schedule('B1', signal));
tasks.push(schedule('B2', signal));
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');
}, 'scheduler.postTask() tasks run in priority order with a composite signal whose source has fixed priority');
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