1 files changed, 12 insertions, 0 deletions
diff --git a/testing/web-platform/tests/scheduler/task-controller-setPriority-recursive.any.js b/testing/web-platform/tests/scheduler/task-controller-setPriority-recursive.any.js
new file mode 100644
index 0000000000..ebc4ccd950
--- /dev/null
+++ b/testing/web-platform/tests/scheduler/task-controller-setPriority-recursive.any.js
@@ -0,0 +1,12 @@
+// 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');