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// META: title=Scheduler: Recursive TaskController.setPriority()
// META: global=window,worker
'use strict';
async_test(t => {
const controller = new TaskController();
controller.signal.onprioritychange = t.step_func_done(() => {
assert_equals(controller.signal.priority, 'background');
assert_throws_dom('NotAllowedError', () => { controller.setPriority('user-blocking'); });
});
controller.setPriority('background');
}, 'Test that TaskController.setPriority() throws an error if called recursively');
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