<!DOCTYPE html>
<!-- This test cannot be upstreamed to WPT because the equivalent version
  available in Web Platform Tests is known to cause timeout errors in the
  Chromium automated build system. They should be maintained only to preserve
  test converage until the corresponding versions in Web Platform Tests can be
  made to pass consistently. See
  https://codereview.chromium.org/2805313003/ -->
<title>Service Worker: canvas tainting of the fetched image</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/get-host-info.js?pipe=sub"></script>
<script src="resources/test-helpers.js"></script>
<body>
<script>
async_test(function(t) {
    var SCOPE = 'resources/fetch-canvas-tainting-iframe.html';
    var SCRIPT = 'resources/fetch-rewrite-worker.js';
    var host_info = get_host_info();

    login(t, host_info.HTTP_ORIGIN, host_info.HTTP_REMOTE_ORIGIN)
      .then(function() {
          return service_worker_unregister_and_register(t, SCRIPT, SCOPE);
        })
      .then(function(registration) {
          return wait_for_state(t, registration.installing, 'activated');
        })
      .then(function() { return with_iframe(SCOPE); })
      .then(function(frame) {
          return new Promise(function(resolve, reject) {
              var channel = new MessageChannel();
              channel.port1.onmessage = t.step_func(function(e) {
                  assert_equals(e.data.results, 'finish');
                  frame.remove();
                  service_worker_unregister_and_done(t, SCOPE);
                });
              frame.contentWindow.postMessage({},
                                              host_info['HTTP_ORIGIN'],
                                              [channel.port2]);
            });
        })
      .catch(unreached_rejection(t));
  }, 'Verify canvas tainting of fetched image in a Service Worker');
</script>
</body>