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/**
*
* @copyright Copyright (c) 2022, Daniel Calviño Sánchez (danxuliu@gmail.com)
*
* @license AGPL-3.0-or-later
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
import TrackEnabler from './TrackEnabler.js'
/**
* Helper function to create MediaStreamTrack mocks with just the attributes and
* methods used by TrackEnabler.
*
* @param {string} id the ID of the track
*/
function newMediaStreamTrackMock(id) {
/**
* MediaStreamTrackMock constructor.
*/
function MediaStreamTrackMock() {
this.id = id
this.enabled = true
// "ended" event is not being tested, so there is no need to add even a
// stub for the event listener methods.
this.addEventListener = jest.fn()
this.removeEventListener = jest.fn()
}
return new MediaStreamTrackMock()
}
describe('TrackToStream', () => {
let trackEnabler
let outputTrackSetHandler
let outputTrackEnabledHandler
let expectedTrackEnabledStateInOutputTrackSetEvent
beforeEach(() => {
trackEnabler = new TrackEnabler()
expectedTrackEnabledStateInOutputTrackSetEvent = undefined
outputTrackSetHandler = jest.fn((trackEnabler, trackId, track) => {
if (expectedTrackEnabledStateInOutputTrackSetEvent !== undefined) {
expect(track.enabled).toBe(expectedTrackEnabledStateInOutputTrackSetEvent)
}
})
outputTrackEnabledHandler = jest.fn()
trackEnabler.on('outputTrackSet', outputTrackSetHandler)
trackEnabler.on('outputTrackEnabled', outputTrackEnabledHandler)
})
test('is enabled by default', () => {
expect(trackEnabler.isEnabled()).toBe(true)
})
describe('enable/disable node', () => {
test('does nothing if disabled when there is no input track', () => {
trackEnabler.setEnabled(false)
expect(trackEnabler.isEnabled()).toBe(false)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(0)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
})
test('does nothing if enabled when there is no input track', () => {
trackEnabler.setEnabled(false)
trackEnabler.setEnabled(true)
expect(trackEnabler.isEnabled()).toBe(true)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(0)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
})
})
describe('set input track', () => {
test('sets enabled input track as its output track', () => {
const inputTrack = newMediaStreamTrackMock('input')
expectedTrackEnabledStateInOutputTrackSetEvent = true
trackEnabler._setInputTrack('default', inputTrack)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(true)
})
test('sets disabled input track as its output track', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler.setEnabled(false)
expectedTrackEnabledStateInOutputTrackSetEvent = false
inputTrack.enabled = false
trackEnabler._setInputTrack('default', inputTrack)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(false)
})
test('sets disabled input track as its output track enabling it when node is enabled', () => {
const inputTrack = newMediaStreamTrackMock('input')
expectedTrackEnabledStateInOutputTrackSetEvent = true
inputTrack.enabled = false
trackEnabler._setInputTrack('default', inputTrack)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(true)
})
test('sets enabled input track as its output track disabling it when node is disabled', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler.setEnabled(false)
expectedTrackEnabledStateInOutputTrackSetEvent = false
inputTrack.enabled = true
trackEnabler._setInputTrack('default', inputTrack)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(false)
})
})
describe('enable/disable node after setting input track', () => {
test('enables input track when node is enabled', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler.setEnabled(false)
inputTrack.enabled = false
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
trackEnabler.setEnabled(true)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(0)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(1)
expect(outputTrackEnabledHandler).toHaveBeenCalledWith(trackEnabler, 'default', true)
expect(inputTrack.enabled).toBe(true)
})
test('disables input track when node is disabled', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
trackEnabler.setEnabled(false)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(0)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(1)
expect(outputTrackEnabledHandler).toHaveBeenCalledWith(trackEnabler, 'default', false)
expect(inputTrack.enabled).toBe(false)
})
})
describe('enable/disable input track', () => {
test('enables input track again if input track is disabled when node is enabled', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
inputTrack.enabled = false
trackEnabler._setInputTrackEnabled('default', false)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(0)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(1)
expect(outputTrackEnabledHandler).toHaveBeenCalledWith(trackEnabler, 'default', true)
expect(inputTrack.enabled).toBe(true)
})
test('disables input track again if input track is enabled when node is disabled', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler.setEnabled(false)
inputTrack.enabled = false
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
inputTrack.enabled = true
trackEnabler._setInputTrackEnabled('default', true)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(0)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(1)
expect(outputTrackEnabledHandler).toHaveBeenCalledWith(trackEnabler, 'default', false)
expect(inputTrack.enabled).toBe(false)
})
test('does nothing if input track is enabled again when node is enabled', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
trackEnabler._setInputTrackEnabled('default', true)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(0)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(true)
})
test('does nothing if input track is disabled again when node is disabled', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler.setEnabled(false)
inputTrack.enabled = false
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
trackEnabler._setInputTrackEnabled('default', false)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(0)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(false)
})
})
describe('remove input track', () => {
test('removes output track when removing input track', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
trackEnabler._setInputTrack('default', null)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', null)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
})
})
describe('update input track', () => {
test('sets input track as its output track when setting same enabled input track again', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
expectedTrackEnabledStateInOutputTrackSetEvent = true
trackEnabler._setInputTrack('default', inputTrack)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(true)
})
test('sets input track as its output track when setting same disabled input track again', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler.setEnabled(false)
inputTrack.enabled = false
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
expectedTrackEnabledStateInOutputTrackSetEvent = false
trackEnabler._setInputTrack('default', inputTrack)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(false)
})
test('sets input track as its output track enabling it when setting same now disabled input track again', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
expectedTrackEnabledStateInOutputTrackSetEvent = true
inputTrack.enabled = false
trackEnabler._setInputTrack('default', inputTrack)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(true)
})
test('sets input track as its output track disabling it when setting same now enabled input track again', () => {
const inputTrack = newMediaStreamTrackMock('input')
trackEnabler.setEnabled(false)
inputTrack.enabled = false
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
expectedTrackEnabledStateInOutputTrackSetEvent = false
inputTrack.enabled = true
trackEnabler._setInputTrack('default', inputTrack)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(false)
})
test('sets input track as its output track when setting another enabled input track', () => {
const inputTrack = newMediaStreamTrackMock('input')
const inputTrack2 = newMediaStreamTrackMock('input2')
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
expectedTrackEnabledStateInOutputTrackSetEvent = true
trackEnabler._setInputTrack('default', inputTrack2)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack2)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(true)
})
test('sets input track as its output track when setting another disabled input track', () => {
const inputTrack = newMediaStreamTrackMock('input')
const inputTrack2 = newMediaStreamTrackMock('input2')
trackEnabler.setEnabled(false)
inputTrack.enabled = false
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
expectedTrackEnabledStateInOutputTrackSetEvent = false
inputTrack2.enabled = false
trackEnabler._setInputTrack('default', inputTrack2)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack2)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(false)
})
test('sets input track as its output track enabling it when setting another now disabled input track', () => {
const inputTrack = newMediaStreamTrackMock('input')
const inputTrack2 = newMediaStreamTrackMock('input2')
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
expectedTrackEnabledStateInOutputTrackSetEvent = true
inputTrack2.enabled = false
trackEnabler._setInputTrack('default', inputTrack2)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack2)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(true)
})
test('sets input track as its output track disabling it when setting another now enabled input track', () => {
const inputTrack = newMediaStreamTrackMock('input')
const inputTrack2 = newMediaStreamTrackMock('input2')
trackEnabler.setEnabled(false)
inputTrack.enabled = false
trackEnabler._setInputTrack('default', inputTrack)
outputTrackSetHandler.mockClear()
outputTrackEnabledHandler.mockClear()
expectedTrackEnabledStateInOutputTrackSetEvent = false
inputTrack2.enabled = true
trackEnabler._setInputTrack('default', inputTrack2)
expect(outputTrackSetHandler).toHaveBeenCalledTimes(1)
expect(outputTrackSetHandler).toHaveBeenCalledWith(trackEnabler, 'default', inputTrack2)
expect(outputTrackEnabledHandler).toHaveBeenCalledTimes(0)
expect(inputTrack.enabled).toBe(false)
})
})
})
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