dont re-prepare voice messages (#7897)

* dont reprepare voice messages

Signed-off-by: Kerry Archibald <kerrya@element.io>

* remove debug

Signed-off-by: Kerry Archibald <kerrya@element.io>

* test Playback

Signed-off-by: Kerry Archibald <kerrya@element.io>

* test RecordingPlayback

Signed-off-by: Kerry Archibald <kerrya@element.io>

* forgotten copyright

Signed-off-by: Kerry Archibald <kerrya@element.io>

* add comments

Signed-off-by: Kerry Archibald <kerrya@element.io>

test/components/views/audio_messages/RecordingPlayback-test.tsx

@@ -0,0 +1,161 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+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.
+*/
+
+import React from 'react';
+import { mount } from 'enzyme';
+import { mocked } from 'jest-mock';
+import { logger } from 'matrix-js-sdk/src/logger';
+import { act } from 'react-dom/test-utils';
+
+import '../../../skinned-sdk';
+import RecordingPlayback from '../../../../src/components/views/audio_messages/RecordingPlayback';
+import { Playback } from '../../../../src/audio/Playback';
+import RoomContext, { TimelineRenderingType } from '../../../../src/contexts/RoomContext';
+import { createAudioContext } from '../../../../src/audio/compat';
+import { findByTestId, flushPromises } from '../../../test-utils';
+import PlaybackWaveform from '../../../../src/components/views/audio_messages/PlaybackWaveform';
+
+jest.mock('../../../../src/audio/compat', () => ({
+    createAudioContext: jest.fn(),
+    decodeOgg: jest.fn().mockResolvedValue({}),
+}));
+
+describe('<RecordingPlayback />', () => {
+    const mockAudioBufferSourceNode = {
+        addEventListener: jest.fn(),
+        connect: jest.fn(),
+        start: jest.fn(),
+    };
+
+    const mockAudioContext = {
+        decodeAudioData: jest.fn(),
+        suspend: jest.fn(),
+        resume: jest.fn(),
+        currentTime: 0,
+        createBufferSource: jest.fn().mockReturnValue(mockAudioBufferSourceNode),
+    };
+
+    const mockAudioBuffer = {
+        duration: 99,
+        getChannelData: jest.fn(),
+    };
+
+    const mockChannelData = new Float32Array();
+
+    const defaultRoom = { roomId: '!room:server.org', timelineRenderingType: TimelineRenderingType.File };
+    const getComponent = (props: { playback: Playback }, room = defaultRoom) =>
+        mount(<RecordingPlayback {...props} />, {
+            wrappingComponent: RoomContext.Provider,
+            wrappingComponentProps: { value: room },
+        });
+
+    beforeEach(() => {
+        jest.spyOn(logger, 'error').mockRestore();
+        mockAudioBuffer.getChannelData.mockClear().mockReturnValue(mockChannelData);
+        mockAudioContext.decodeAudioData.mockReset().mockImplementation(
+            (_b, callback) => callback(mockAudioBuffer),
+        );
+        mocked(createAudioContext).mockReturnValue(mockAudioContext as unknown as AudioContext);
+    });
+
+    const getPlayButton = component => findByTestId(component, 'play-pause-button').at(0);
+
+    it('renders recording playback', () => {
+        const playback = new Playback(new ArrayBuffer(8));
+        const component = getComponent({ playback });
+        expect(component).toBeTruthy();
+    });
+
+    it('disables play button while playback is decoding', async () => {
+        const playback = new Playback(new ArrayBuffer(8));
+        const component = getComponent({ playback });
+        expect(getPlayButton(component).props().disabled).toBeTruthy();
+    });
+
+    it('enables play button when playback is finished decoding', async () => {
+        const playback = new Playback(new ArrayBuffer(8));
+        const component = getComponent({ playback });
+        await flushPromises();
+        component.setProps({});
+        expect(getPlayButton(component).props().disabled).toBeFalsy();
+    });
+
+    it('displays error when playback decoding fails', async () => {
+        // stub logger to keep console clean from expected error
+        jest.spyOn(logger, 'error').mockReturnValue(undefined);
+        jest.spyOn(logger, 'warn').mockReturnValue(undefined);
+        mockAudioContext.decodeAudioData.mockImplementation(
+            (_b, _cb, error) => error(new Error('oh no')),
+        );
+        const playback = new Playback(new ArrayBuffer(8));
+        const component = getComponent({ playback });
+        await flushPromises();
+        expect(component.find('.text-warning').length).toBeFalsy();
+    });
+
+    it('displays pre-prepared playback with correct playback phase', async () => {
+        const playback = new Playback(new ArrayBuffer(8));
+        await playback.prepare();
+        const component = getComponent({ playback });
+        // playback already decoded, button is not disabled
+        expect(getPlayButton(component).props().disabled).toBeFalsy();
+        expect(component.find('.text-warning').length).toBeFalsy();
+    });
+
+    it('toggles playback on play pause button click', async () => {
+        const playback = new Playback(new ArrayBuffer(8));
+        jest.spyOn(playback, 'toggle').mockResolvedValue(undefined);
+        await playback.prepare();
+        const component = getComponent({ playback });
+
+        act(() => {
+            getPlayButton(component).simulate('click');
+        });
+
+        expect(playback.toggle).toHaveBeenCalled();
+    });
+
+    it.each([
+        [TimelineRenderingType.Notification],
+        [TimelineRenderingType.File],
+        [TimelineRenderingType.Pinned],
+    ])('does not render waveform when timeline rendering type for room is %s', (timelineRenderingType) => {
+        const playback = new Playback(new ArrayBuffer(8));
+        const room = {
+            ...defaultRoom,
+            timelineRenderingType,
+        };
+        const component = getComponent({ playback }, room);
+
+        expect(component.find(PlaybackWaveform).length).toBeFalsy();
+    });
+
+    it.each([
+        [TimelineRenderingType.Room],
+        [TimelineRenderingType.Thread],
+        [TimelineRenderingType.ThreadsList],
+        [TimelineRenderingType.Search],
+    ])('renders waveform when timeline rendering type for room is %s', (timelineRenderingType) => {
+        const playback = new Playback(new ArrayBuffer(8));
+        const room = {
+            ...defaultRoom,
+            timelineRenderingType,
+        };
+        const component = getComponent({ playback }, room);
+
+        expect(component.find(PlaybackWaveform).length).toBeTruthy();
+    });
+});