gecko-dev/toolkit/components/antitracking/test/browser/browser_blockingDOMCache.js

requestLongerTimeout(2);

AntiTracking.runTest("DOM Cache",
  async _ => {
    await caches.open("wow").then(
      _ => { ok(false, "DOM Cache cannot be used!"); },
      _ => { ok(true, "DOM Cache cannot be used!"); });
  },
  async _ => {
    await caches.open("wow").then(
      _ => { ok(true, "DOM Cache can be used!"); },
      _ => { ok(false, "DOM Cache can be used!"); });
  },
  async _ => {
    await new Promise(resolve => {
      Services.clearData.deleteData(Ci.nsIClearDataService.CLEAR_ALL, value => resolve());
    });
  });

AntiTracking.runTest("DOM Cache and Storage Access API",
  async _ => {
    /* import-globals-from storageAccessAPIHelpers.js */
    await noStorageAccessInitially();

    await caches.open("wow").then(
      _ => { ok(false, "DOM Cache cannot be used!"); },
      _ => { ok(true, "DOM Cache cannot be used!"); });

    /* import-globals-from storageAccessAPIHelpers.js */
    await callRequestStorageAccess();

    let shouldThrow = SpecialPowers.Services.prefs.getIntPref("network.cookie.cookieBehavior") == SpecialPowers.Ci.nsICookieService.BEHAVIOR_REJECT;

    await caches.open("wow").then(
      _ => { ok(!shouldThrow, "DOM Cache can be used!"); },
      _ => { ok(shouldThrow, "DOM Cache can be used!"); });
  },
  async _ => {
    /* import-globals-from storageAccessAPIHelpers.js */
    await noStorageAccessInitially();

    await caches.open("wow").then(
      _ => { ok(true, "DOM Cache can be used!"); },
      _ => { ok(false, "DOM Cache can be used!"); });

    /* import-globals-from storageAccessAPIHelpers.js */
    await callRequestStorageAccess();

    // For non-tracking windows, calling the API is a no-op
    await caches.open("wow").then(
      _ => { ok(true, "DOM Cache can be used!"); },
      _ => { ok(false, "DOM Cache can be used!"); });
  },
  async _ => {
    await new Promise(resolve => {
      Services.clearData.deleteData(Ci.nsIClearDataService.CLEAR_ALL, value => resolve());
    });
  },
  null, false, false);