sends-report-on-subdomain-dns-failure.https.html

<!DOCTYPE HTML>
<html>
<head>
  <title>
    Test that include_subdomains policies report DNS failures for subdomains
  </title>
  <script src='/resources/testharness.js'></script>
  <script src='/resources/testharnessreport.js'></script>
  <script src='./support/nel.sub.js'></script>
</head>
<body>
  <script>
    nel_test(async t => {
      // Make a request to a resource whose response headers include an
      // include_subdomains NEL policy.
      await fetchResourceWithIncludeSubdomainsPolicy();
      // Make a request to another resource on a nonexistent subdomain of the
      // above.  Since the subdomain doesn't exist, the request should fail with
      // a DNS error.
      await fetchResourceWithNoPolicy('nonexistent').then((response) => {
        assert_unreached("Request to nonexistent domain should fail");
      }, (err) => {
        // Silence the error, since it's expected.
      });
      // The include_subdomains policy that we just received should cover the
      // second request, since include_subdomains policies can report on DNS
      // errors, so the collector should have received a report about it.
      assert_true(await reportExists({
        url: getURLForResourceWithNoPolicy('nonexistent'),
        user_agent: navigator.userAgent,
        type: "network-error",
        body: {
          method: "GET",
          sampling_fraction: 1.0,
          status_code: 0,
          phase: "dns",
          type: "dns.name_not_resolved",
        },
        metadata: {
          content_type: "application/reports+json",
        },
      }));
    });
  </script>
</body>
</html>
chromium/third_party/blink/web_tests/external/wpt/network-error-logging/sends-report-on-subdomain-dns-failure.https.html
