duplicate-urls.https.html

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This WPT test may be referenced by the following Test IDs:
- /speculation-rules/prefetch/duplicate-urls.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/common/dispatcher/dispatcher.js"></script>

<script src="/common/utils.js"></script>

<script src="../resources/utils.js"></script>

<script src="resources/utils.sub.js"></script>

<script>

  setup(() => assertSpeculationRulesIsSupported());

  promise_test(async t => {

    let urls = Array(5).fill(getPrefetchUrlList(1)[0]);

    insertSpeculationRules({ prefetch: [{ source: 'list', urls: urls }] });

    await new Promise(resolve => t.step_timeout(resolve, 2000));

    let prefetched_count = await isUrlPrefetched(urls[0]);

    assert_equals(prefetched_count, 1, "url should be prefetched just once.");

  }, "browser should remove duplicate urls from prefetch buffer.");

</script>