performance-speculations-preconnect-response-header.tentative.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /speculation-rules/speculation-measurement/performance-speculations-preconnect-response-header.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>performance.getSpeculations() - preconnects from final-response Link headers</title>

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

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

<script src="support/speculation-measurement-utils.js"></script>

<body>

<script>

// This document is served with `Link: rel=preconnect` headers on the final

// (200) navigation response -- not via a 103 Early Hints response. See the

// sibling .headers file:

//   Link: <https://preconnect-response-header-none.test>; rel=preconnect

//   Link: <https://preconnect-response-header-anon.test>; rel=preconnect; crossorigin

// The browser forwards these at commit, so they're recorded with

// earlyhint=false by the time this runs.

test(() => {

  assert_true(isSpeculationMeasurementEnabled(),

    "SpeculationMeasurement feature must be enabled");

  const preconnects = performance.getSpeculations().preconnects;

  const none = findPreconnectsByOrigin(

      preconnects, 'https://preconnect-response-header-none.test');

  assert_equals(none.length, 1,

    "preconnect from a response Link header (no crossorigin) should be recorded");

  assert_equals(none[0].crossorigin, 'none');

  assert_false(none[0].earlyhint,

    "a final-response Link header preconnect is not an Early Hints preconnect");

  const anon = findPreconnectsByOrigin(

      preconnects, 'https://preconnect-response-header-anon.test');

  assert_equals(anon.length, 1,

    "preconnect from a response Link header (crossorigin) should be recorded");

  assert_equals(anon[0].crossorigin, 'anonymous');

  assert_false(anon[0].earlyhint);

}, "performance.getSpeculations(): preconnects from final-response Link headers");

</script>

</body>