apps/system/test/unit/mock_navigator_settings.js


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(function(window) {
  var observers = {},
      settings = {},
      removedObservers = {};

  function mns_mLockSet(obj) {
    for (var key in obj) {
      settings[key] = obj[key];
    }
  }

  function mns_addObserver(name, cb) {
    observers[name] = observers[name] || [];
    observers[name].push(cb);
  }

  function mns_removeObserver(name, cb) {
    removedObservers[name] = removedObservers[name] || [];
    removedObservers[name].push(cb);
  }

  function mns_createLock() {
    return {
      set: mns_mLockSet
    };
  }

  function mns_mTriggerObservers(name, args) {
    var theseObservers = observers[name];

    if (! theseObservers) {
      return;
    }

    theseObservers.forEach(function(func) {
      func(args);
    });
  }

  function mns_teardown() {
    observers = {};
    settings = {};
    removedObservers = {};
  }

  window.MockNavigatorSettings = {
    addObserver: mns_addObserver,
    removeObserver: mns_removeObserver,
    createLock: mns_createLock,

    mTriggerObservers: mns_mTriggerObservers,
    mTeardown: mns_teardown,
    get mObservers() {
      return observers;
    },
    get mSettings() {
      return settings;
    },
    get mRemovedObservers() {
      return removedObservers;
    }
  };

})(this);