mozilla-release/testing/web-platform/tests/content-security-policy/reporting-api/reporting-api-report-to-overrides-report-uri-1.https.sub.html

<!DOCTYPE HTML>
<html>
<head>
  <title>Test that report-to overrides report-uri. This tests report-uri before report-to in the policy</title>
  <script src='/resources/testharness.js'></script>
  <script src='/resources/testharnessreport.js'></script>
</head>
<body>
  <script>
    var t1 = async_test("Test that image does not load");
    async_test(function(t2) {
    window.addEventListener("securitypolicyviolation", t2.step_func(function(e) {
        assert_equals(e.blockedURI, "{{location[scheme]}}://{{location[host]}}/content-security-policy/support/fail.png");
        assert_equals(e.violatedDirective, "img-src");
        t2.done();
      }));
    }, "Event is fired");
  </script>
  <img src='/content-security-policy/support/fail.png'
       onload='t1.unreached_func("The image should not have loaded");'
       onerror='t1.done();'>
  <!-- report-to overrides the report-uri so the report goes to a different endpoint and we should not have any reports sent to this endpoint -->
  <script async defer src='../support/checkReport.sub.js?reportExists=false></script>
</body>
</html>