openmct/platform/commonUI/browse/test/navigation/NavigationServiceSpec.js

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 * Open MCT Web, Copyright (c) 2014-2015, United States Government
 * as represented by the Administrator of the National Aeronautics and Space
 * Administration. All rights reserved.
 *
 * Open MCT Web is licensed under the Apache License, Version 2.0 (the
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/*global define,Promise,describe,it,expect,beforeEach,waitsFor,jasmine*/

/**
 * MCTRepresentationSpec. Created by vwoeltje on 11/6/14.
 */
define(
    ["../../src/navigation/NavigationService"],
    function (NavigationService) {
        "use strict";

        describe("The navigation service", function () {
            var navigationService;

            beforeEach(function () {
                navigationService = new NavigationService();
            });

            it("stores navigation state", function () {
                var testObject = { someKey: 42 },
                    otherObject = { someKey: "some value" };
                expect(navigationService.getNavigation())
                    .toBeUndefined();
                navigationService.setNavigation(testObject);
                expect(navigationService.getNavigation())
                    .toBe(testObject);
                expect(navigationService.getNavigation())
                    .toBe(testObject);
                navigationService.setNavigation(otherObject);
                expect(navigationService.getNavigation())
                    .toBe(otherObject);
            });

            it("notifies listeners on change", function () {
                var testObject = { someKey: 42 },
                    callback = jasmine.createSpy("callback");

                navigationService.addListener(callback);
                expect(callback).not.toHaveBeenCalled();

                navigationService.setNavigation(testObject);
                expect(callback).toHaveBeenCalledWith(testObject);
            });

            it("stops notifying listeners after removal", function () {
                var testObject = { someKey: 42 },
                    callback = jasmine.createSpy("callback");

                navigationService.addListener(callback);
                navigationService.removeListener(callback);


                navigationService.setNavigation(testObject);
                expect(callback).not.toHaveBeenCalled();
            });

        });
    }
);