gecko-dev/dom/tests/unit/test_geolocation_reset_accuracy.js

const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");

const providerCID = Components.ID("{14aa4b81-e266-45cb-88f8-89595dece114}");
const providerContract = "@mozilla.org/geolocation/provider;1";

const categoryName = "geolocation-provider";

var provider = {
  QueryInterface: ChromeUtils.generateQI([
    "nsIFactory",
    "nsIGeolocationProvider",
  ]),
  createInstance: function eventsink_ci(outer, iid) {
    if (outer) {
      throw Cr.NS_ERROR_NO_AGGREGATION;
    }
    return this.QueryInterface(iid);
  },
  lockFactory: function eventsink_lockf(lock) {
    throw Cr.NS_ERROR_NOT_IMPLEMENTED;
  },
  startup() {},
  watch() {},
  shutdown() {},
  setHighAccuracy(enable) {
    this._isHigh = enable;
    if (enable) {
      this._seenHigh = true;
      executeSoon(stop_high_accuracy_watch);
    }
  },
  _isHigh: false,
  _seenHigh: false,
};

function successCallback() {
  Assert.ok(false);
  do_test_finished();
}

function errorCallback() {
  Assert.ok(false);
  do_test_finished();
}

var geolocation;
var watchID2;

function run_test() {
  if (runningInParent) {
    // XPCShell does not get a profile by default. The geolocation service
    // depends on the settings service which uses IndexedDB and IndexedDB
    // needs a place where it can store databases.
    do_get_profile();

    Components.manager.nsIComponentRegistrar.registerFactory(
      providerCID,
      "Unit test geo provider",
      providerContract,
      provider
    );

    Services.catMan.nsICategoryManager.addCategoryEntry(
      categoryName,
      "unit test",
      providerContract,
      false,
      true
    );

    Services.prefs.setBoolPref("dom.testing.ignore_ipc_principal", true);
    Services.prefs.setBoolPref("geo.wifi.scan", false);
  }

  do_test_pending();

  geolocation = Cc["@mozilla.org/geolocation;1"].createInstance(Ci.nsISupports);
  geolocation.watchPosition(successCallback, errorCallback);
  watchID2 = geolocation.watchPosition(successCallback, errorCallback, {
    enableHighAccuracy: true,
  });

  if (!runningInParent) {
    do_await_remote_message("high_acc_enabled", stop_high_accuracy_watch);
  }
}

function stop_high_accuracy_watch() {
  geolocation.clearWatch(watchID2);
  check_results();
  do_test_finished();
}

function check_results() {
  if (runningInParent) {
    // check the provider was set to high accuracy during the test
    Assert.ok(provider._seenHigh);
    // check the provider is not currently set to high accuracy
    Assert.ok(!provider._isHigh);
  }
  do_test_finished();
}