chromium/third_party/blink/web_tests/wpt_internal/infrastructure/fail-with-nonexistent-subtest.html

<!DOCTYPE html>
<title>`run_wpt_tests.py` should fail tests with nonexistent subtest expectations</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
  setup({ single_test: true });
  done();
</script>