Move assets from opus to testdata module

PiperOrigin-RevId: 293780365

extensions/opus/build.gradle

@@ -29,9 +29,12 @@ android {
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
     }
 
-    sourceSets.main {
-        jniLibs.srcDir 'src/main/libs'
-        jni.srcDirs = [] // Disable the automatic ndk-build call by Android Studio.
+    sourceSets {
+        main {
+            jniLibs.srcDir 'src/main/libs'
+            jni.srcDirs = [] // Disable the automatic ndk-build call by Android Studio.
+        }
+        androidTest.assets.srcDir '../../testdata/src/test/assets/'
     }
 
     testOptions.unitTests.includeAndroidResources = true

extensions/opus/src/androidTest/java/com/google/android/exoplayer2/ext/opus/OpusPlaybackTest.java

@@ -38,7 +38,7 @@ import org.junit.runner.RunWith;
 @RunWith(AndroidJUnit4.class)
 public class OpusPlaybackTest {
 
-  private static final String BEAR_OPUS_URI = "asset:///bear-opus.webm";
+  private static final String BEAR_OPUS_URI = "asset:///ogg/bear-opus.webm";
 
   @Before
   public void setUp() {