nested_worker_close_from_parent_worker.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Test terminating a nested workers by calling terminate() from its parent worker</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
async_test(function() {
  const worker = new Worker("support/parent_of_nested_worker.js");
  worker.onmessage = this.step_func_done(function(e) {
    assert_equals(e.data, "Pass");
    done();
  });
  worker.postMessage("close");
});
</script>

chromium/third_party/blink/web_tests/external/wpt/workers/nested_worker_close_from_parent_worker.html