Files
shaka-player/test/media/play_rate_controller_unit.js
T
Jacob Trimble 0dd64074b9 Only allow one statement per line.
With the new style rule, we cannot have two statements on the same line.
So we can no longer have an "if" on a single line and we cannot have
an arrow function with a body on the same line as when it is used.
This is mostly a manual change.

Change-Id: I2285202dd5ecbad764308bc725e6d317ff2ee7f0
2019-05-13 22:11:50 +00:00

126 lines
3.9 KiB
JavaScript

/**
* @license
* Copyright 2016 Google Inc.
*
* 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.
*/
describe('PlayRateController', () => {
/** @type {!jasmine.Spy} */
let getPlayRateSpy;
/** @type {!jasmine.Spy} */
let setPlayRateSpy;
/** @type {!jasmine.Spy} */
let movePlayheadSpy;
/** @type {number} */
let playRate;
/** @type {!shaka.media.PlayRateController} */
let controller;
beforeEach(() => {
getPlayRateSpy = jasmine.createSpy('getPlaybackRate');
setPlayRateSpy = jasmine.createSpy('setPlaybackRate');
movePlayheadSpy = jasmine.createSpy('movePlayhead');
playRate = 1;
getPlayRateSpy.and.callFake(() => playRate);
setPlayRateSpy.and.callFake((rate) => {
playRate = rate;
});
const harness = {
getRate: shaka.test.Util.spyFunc(getPlayRateSpy),
setRate: shaka.test.Util.spyFunc(setPlayRateSpy),
movePlayhead: shaka.test.Util.spyFunc(movePlayheadSpy),
};
controller = new shaka.media.PlayRateController(harness);
});
// When the playback rate is positive, we want to see that the media element's
// playback rate gets set to the playback rate.
it('positive playback rate', () => {
controller.set(5);
expect(setPlayRateSpy).toHaveBeenCalledWith(5);
});
// When the playback rate is negative, we want to see the media element's
// playback rate get set to zero.
it('negative playback rate', () => {
controller.set(-5);
expect(setPlayRateSpy).toHaveBeenCalledWith(0);
});
it('buffering state sets rate to zero', () => {
controller.setBuffering(true);
expect(setPlayRateSpy).toHaveBeenCalledWith(0);
setPlayRateSpy.calls.reset();
controller.setBuffering(false);
expect(setPlayRateSpy).toHaveBeenCalledWith(1);
});
it('entering buffering state twice has no effect', () => {
controller.setBuffering(true);
expect(setPlayRateSpy).toHaveBeenCalledWith(0);
// Reset the calls so that we can make sure it was not called again.
setPlayRateSpy.calls.reset();
controller.setBuffering(true);
expect(setPlayRateSpy).not.toHaveBeenCalled();
});
it('leaving buffering state twice has no effect', () => {
controller.setBuffering(true);
controller.setBuffering(false);
// Reset the calls so that we can make sure it was not called again.
setPlayRateSpy.calls.reset();
controller.setBuffering(false);
expect(setPlayRateSpy).not.toHaveBeenCalled();
});
// When we set the rate while in a buffering state, we should see the new
// rate be used once we leave the buffering state.
it('set takes effect after buffering state ends', () => {
controller.setBuffering(true);
expect(setPlayRateSpy).toHaveBeenCalledWith(0);
// Reset so that we can make sure it was not called after we call |set(4)|.
setPlayRateSpy.calls.reset();
controller.set(4);
expect(setPlayRateSpy).not.toHaveBeenCalled();
controller.setBuffering(false);
expect(setPlayRateSpy).toHaveBeenCalledWith(4);
});
// Make sure that when the playback rate set, if the new rate matches the
// current rate, the controller will not set the rate on the media element.
it('does not redundently set the playrate', () => {
// Make sure we don't see the play rate change before and after we set the
// rate on the controller.
expect(setPlayRateSpy).not.toHaveBeenCalled();
controller.set(1);
expect(setPlayRateSpy).not.toHaveBeenCalled();
});
});