text: /*****************************************************************************
   * Open MCT, Copyright (c) 2014-2018, United States Government
   * as represented by the Administrator of the National Aeronautics and Space
   * Administration. All rights reserved.
   *
   * Open MCT is licensed under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   * http://www.apache.org/licenses/LICENSE-2.0.
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations
   * under the License.
   *
   * Open MCT includes source code licensed under additional open source
   * licenses. See the Open Source Licenses file (LICENSES.md) included with
   * this source code distribution or the Licensing information page available
   * at runtime from the About dialog for additional information.
   *****************************************************************************/
  
  define(['./TimeAPI'], function (TimeAPI) {
      describe("The Time API", function () {
          let api;
          let timeSystemKey;
          let timeSystem;
          let clockKey;
          let clock;
          let bounds;
          let eventListener;
          let toi;
  
          beforeEach(function () {
              api = new TimeAPI();
              timeSystemKey = "timeSystemKey";
              timeSystem = {key: timeSystemKey};
              clockKey = "someClockKey";
              clock = jasmine.createSpyObj("clock", [
                  "on",
                  "off",
                  "currentValue"
              ]);
              clock.currentValue.and.returnValue(100);
              clock.key = clockKey;
              bounds = {
                  start: 0,
                  end: 1
              };
              eventListener = jasmine.createSpy("eventListener");
              toi = 111;
          });
  
          it("Supports setting and querying of time of interest", function () {
              expect(api.timeOfInterest()).not.toBe(toi);
              api.timeOfInterest(toi);
              expect(api.timeOfInterest()).toBe(toi);
          });
  
          it("Allows setting of valid bounds", function () {
              bounds = {
                  start: 0,
                  end: 1
              };
              expect(api.bounds()).not.toBe(bounds);
              expect(api.bounds.bind(api, bounds)).not.toThrow();
              expect(api.bounds()).toEqual(bounds);
          });
  
          it("Disallows setting of invalid bounds", function () {
              bounds = {
                  start: 1,
                  end: 0
              };
              expect(api.bounds()).not.toEqual(bounds);
              expect(api.bounds.bind(api, bounds)).toThrow();
              expect(api.bounds()).not.toEqual(bounds);
  
              bounds = {start: 1};
              expect(api.bounds()).not.toEqual(bounds);
              expect(api.bounds.bind(api, bounds)).toThrow();
              expect(api.bounds()).not.toEqual(bounds);
          });
  
          it("Allows setting of previously registered time system with bounds", function () {
              api.addTimeSystem(timeSystem);
              expect(api.timeSystem()).not.toBe(timeSystem);
              expect(function () {
                  api.timeSystem(timeSystem, bounds);
              }).not.toThrow();
              expect(api.timeSystem()).toBe(timeSystem);
          });
  
          it("Disallows setting of time system without bounds", function () {
              api.addTimeSystem(timeSystem);
              expect(api.timeSystem()).not.toBe(timeSystem);
              expect(function () {
                  api.timeSystem(timeSystemKey);
              }).toThrow();
              expect(api.timeSystem()).not.toBe(timeSystem);
          });
  
          it("allows setting of timesystem without bounds with clock", function () {
              api.addTimeSystem(timeSystem);
              api.addClock(clock);
              api.clock(clockKey, {
                  start: 0,
                  end: 1
              });
              expect(api.timeSystem()).not.toBe(timeSystem);
              expect(function () {
                  api.timeSystem(timeSystemKey);
              }).not.toThrow();
              expect(api.timeSystem()).toBe(timeSystem);
  
          });
  
          it("Emits an event when time system changes", function () {
              api.addTimeSystem(timeSystem);
              expect(eventListener).not.toHaveBeenCalled();
              api.on("timeSystem", eventListener);
              api.timeSystem(timeSystemKey, bounds);
              expect(eventListener).toHaveBeenCalledWith(timeSystem);
          });
  
          it("Emits an event when time of interest changes", function () {
              expect(eventListener).not.toHaveBeenCalled();
              api.on("timeOfInterest", eventListener);
              api.timeOfInterest(toi);
              expect(eventListener).toHaveBeenCalledWith(toi);
          });
  
          it("Emits an event when bounds change", function () {
              expect(eventListener).not.toHaveBeenCalled();
              api.on("bounds", eventListener);
              api.bounds(bounds);
              expect(eventListener).toHaveBeenCalledWith(bounds, false);
          });
  
          it("If bounds are set and TOI lies inside them, do not change TOI", function () {
              api.timeOfInterest(6);
              api.bounds({
                  start: 1,
                  end: 10
              });
              expect(api.timeOfInterest()).toEqual(6);
          });
  
          it("If bounds are set and TOI lies outside them, reset TOI", function () {
              api.timeOfInterest(11);
              api.bounds({
                  start: 1,
                  end: 10
              });
              expect(api.timeOfInterest()).toBeUndefined();
          });
  
          it("Maintains delta during tick", function () {
          });
  
          it("Allows registered time system to be activated", function () {
          });
  
          it("Allows a registered tick source to be activated", function () {
              const mockTickSource = jasmine.createSpyObj("mockTickSource", [
                  "on",
                  "off",
                  "currentValue"
              ]);
              mockTickSource.key = 'mockTickSource';
          });
  
          describe(" when enabling a tick source", function () {
              let mockTickSource;
              let anotherMockTickSource;
              const mockOffsets = {
                  start: 0,
                  end: 1
              };
  
              beforeEach(function () {
                  mockTickSource = jasmine.createSpyObj("clock", [
                      "on",
                      "off",
                      "currentValue"
                  ]);
                  mockTickSource.currentValue.and.returnValue(10);
                  mockTickSource.key = "mts";
  
                  anotherMockTickSource = jasmine.createSpyObj("clock", [
                      "on",
                      "off",
                      "currentValue"
                  ]);
                  anotherMockTickSource.key = "amts";
                  anotherMockTickSource.currentValue.and.returnValue(10);
  
                  api.addClock(mockTickSource);
                  api.addClock(anotherMockTickSource);
              });
  
              it("sets bounds based on current value", function () {
                  api.clock("mts", mockOffsets);
                  expect(api.bounds()).toEqual({
                      start: 10,
                      end: 11
                  });
              });
  
              it("a new tick listener is registered", function () {
                  api.clock("mts", mockOffsets);
                  expect(mockTickSource.on).toHaveBeenCalledWith("tick", jasmine.any(Function));
              });
  
              it("listener of existing tick source is reregistered", function () {
                  api.clock("mts", mockOffsets);
                  api.clock("amts", mockOffsets);
                  expect(mockTickSource.off).toHaveBeenCalledWith("tick", jasmine.any(Function));
              });
  
              it("Allows the active clock to be set and unset", function () {
                  expect(api.clock()).toBeUndefined();
                  api.clock("mts", mockOffsets);
                  expect(api.clock()).toBeDefined();
                  api.stopClock();
                  expect(api.clock()).toBeUndefined();
              });
  
          });
  
          it("on tick, observes offsets, and indicates tick in bounds callback", function () {
              const mockTickSource = jasmine.createSpyObj("clock", [
                  "on",
                  "off",
                  "currentValue"
              ]);
              mockTickSource.currentValue.and.returnValue(100);
              let tickCallback;
              const boundsCallback = jasmine.createSpy("boundsCallback");
              const clockOffsets = {
                  start: -100,
                  end: 100
              };
              mockTickSource.key = "mts";
  
              api.addClock(mockTickSource);
              api.clock("mts", clockOffsets);
  
              api.on("bounds", boundsCallback);
  
              tickCallback = mockTickSource.on.calls.mostRecent().args[1];
              tickCallback(1000);
              expect(boundsCallback).toHaveBeenCalledWith({
                  start: 900,
                  end: 1100
              }, true);
          });
      });
  });
  