service-worker-interception-tests.js

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function openWindow(t, url) {

  return new Promise(resolve => {

    const win = window.open(url, '_blank');

    t.add_cleanup(() => win.close());

    window.onmessage = e => {

      assert_equals(e.data, 'LOADED');

      resolve(win);

};

});

// Runs a series of tests related to service worker interception for a worklet.

//

// Usage:

// runServiceWorkerInterceptionTests("paint");

function runServiceWorkerInterceptionTests(worklet_type) {

  const worklet = get_worklet(worklet_type);

  // Tests that a worklet should be served by the owner document's service

  // worker.

//

  // [Current document] registers a service worker for Window's URL.

  // --(open)--> [Window] should be controlled by the service worker.

  //   --(addModule)--> [Worklet] should be served by the service worker.

  promise_test(async t => {

    const kWindowURL = 'resources/addmodule-window.html';

    const kServiceWorkerScriptURL = 'resources/service-worker.js';

    // This doesn't contain the 'resources/' prefix because this will be

    // imported from a html file under resources/.

    const kWorkletScriptURL = 'non-existent-worklet-script.js';

    const registration = await service_worker_unregister_and_register(

        t, kServiceWorkerScriptURL, kWindowURL);

    t.add_cleanup(() => registration.unregister());

    await wait_for_state(t, registration.installing, 'activated');

    const win = await openWindow(t, kWindowURL);

    assert_not_equals(win.navigator.serviceWorker.controller, null,

                      'The document should be controlled.');

    // The worklet script on kWorkletScriptURL doesn't exist but the service

    // worker serves it, so the addModule() should succeed.

    win.postMessage({ type: worklet_type, script_url: kWorkletScriptURL }, '*');

    const msgEvent = await new Promise(resolve => window.onmessage = resolve);

    assert_equals(msgEvent.data, 'RESOLVED');

  }, 'addModule() on a controlled document should be intercepted by a ' +

     'service worker.');

  // Tests that a worklet should not be served by a service worker other than

  // the owner document's service worker.

//

  // [Current document] registers a service worker for Worklet's URL.

  // --(open)--> [Window] should not be controlled by the service worker.

  //   --(addModule)--> [Worklet] should not be served by the service worker.

  promise_test(async t => {

    const kWindowURL = 'resources/addmodule-window.html';

    const kServiceWorkerScriptURL = 'resources/service-worker.js';

    // This doesn't contain the 'resources/' prefix because this will be

    // imported from a html file under resources/.

    const kWorkletScriptURL = 'non-existent-worklet-script.js';

    const registration = await service_worker_unregister_and_register(

        t, kServiceWorkerScriptURL, 'resources/' + kWorkletScriptURL);

    t.add_cleanup(() => registration.unregister());

    await wait_for_state(t, registration.installing, 'activated');

    const win = await openWindow(t, kWindowURL);

    assert_equals(win.navigator.serviceWorker.controller, null,

                  'The document should not be controlled.');

    // The worklet script on kWorkletScriptURL doesn't exist and the service

    // worker doesn't serve it, so the addModule() should fail.

    win.postMessage({ type: worklet_type, script_url: kWorkletScriptURL }, '*');

    const msgEvent = await new Promise(resolve => window.onmessage = resolve);

    assert_equals(msgEvent.data, 'REJECTED');

  }, 'addModule() on a non-controlled document should not be intercepted by ' +

     'a service worker even if the script is under the service worker scope.');

  // Tests that static import should be served by the owner document's service

  // worker.

//

  // [Current document] registers a service worker for Window's URL.

  // --(open)--> [Window] should be controlled by the service worker.

  //   --(addModule)--> [Worklet] should be served by the service worker.

  //     --(static import)--> [Script] should be served by the service worker.

  promise_test(async t => {

    const kWindowURL = 'resources/addmodule-window.html';

    const kServiceWorkerScriptURL = 'resources/service-worker.js';

    // This doesn't contain the 'resources/' prefix because this will be

    // imported from a html file under resources/.

    const kWorkletScriptURL = 'import-non-existent-worklet-script.js';

    const registration = await service_worker_unregister_and_register(

        t, kServiceWorkerScriptURL, kWindowURL);

    t.add_cleanup(() => registration.unregister());

    await wait_for_state(t, registration.installing, 'activated');

    const win = await openWindow(t, kWindowURL);

    assert_not_equals(win.navigator.serviceWorker.controller, null,

                      'The document should be controlled.');

    // A script statically imported by the worklet doesn't exist but the service

    // worker serves it, so the addModule() should succeed.

    win.postMessage({ type: worklet_type, script_url: kWorkletScriptURL }, '*');

    const msgEvent = await new Promise(resolve => window.onmessage = resolve);

    assert_equals(msgEvent.data, 'RESOLVED');

  }, 'Static import should be intercepted by a service worker.');