use-counter.html | Explore in Territory

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
  <script type=module>
    import {WebFeature} from '/gen/third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom.m.js';

    test(() => {
      internals.clearUseCounter(document, WebFeature.kObservableConstructor);
      assert_false(internals.isUseCounted(document, WebFeature.kObservableConstructor));
      const observable = new Observable(() => {});
      assert_true(internals.isUseCounted(document, WebFeature.kObservableConstructor));
    });
  </script>
</body>

chromium/third_party/blink/web_tests/wpt_internal/observable/use-counter.html