!9581 add volumeEvent返回值断言

Merge pull request !9581 from 秦莉文/OpenHarmony-4.0-Beta2

multimedia/audio/audio_js_standard/audioManager/src/main/js/test/AudioManagerApi9.test.js

@@ -476,8 +476,16 @@ export default function audioManagerApi9() {
          */
         it('SUB_MULTIMEDIA_AUDIO_VOLUME_GROUP_MANAGER_ON_VOLUMECHANGE_0100', 3, async function (done) {
             let audioVolumeManager = audioManager.getVolumeManager();
-            audioVolumeManager.on('volumeChange', (VolumeEvent) => { });
-            expect(true).assertTrue();
+			let maxVolume = await audioManager.getMaxVolume(audio.AudioVolumeType.MEDIA)
+			let minVolume = await audioManager.getMinVolume(audio.AudioVolumeType.MEDIA)
+			await audioManager.setVolume(audio.AudioVolumeType.MEDIA, maxVolume)
+            audioVolumeManager.on('volumeChange', (VolumeEvent) => {
+				console.info(`SUB_MULTIMEDIA_AUDIO_VOLUME_GROUP_MANAGER_ON_VOLUMECHANGE_0100 VolumeEvent.volumeType: ${VolumeEvent.volumeType}, VolumeEvent.volume:${VolumeEvent.volume}, VolumeEvent.updateUi:${VolumeEvent.updateUi}`);
+				expect(VolumeEvent.volumeType).assertEqual(audio.AudioVolumeType.MEDIA);
+				expect(VolumeEvent.volume).assertEqual(minVolume);
+				expect(VolumeEvent.updateUi).assertEqual(false);
+				});
+			await audioManager.setVolume(audio.AudioVolumeType.MEDIA, minVolume)
             done();
         })