diff --git a/framework/src/test/java/org/toop/framework/audio/MusicManagerTest.java b/framework/src/test/java/org/toop/framework/audio/MusicManagerTest.java
index 0cd0535..106c48e 100644
--- a/framework/src/test/java/org/toop/framework/audio/MusicManagerTest.java
+++ b/framework/src/test/java/org/toop/framework/audio/MusicManagerTest.java
@@ -49,6 +49,16 @@ class MockAudioResource extends BaseResource implements AudioResource {
         stopped = true;
     }
 
+    @Override
+    public long duration() {
+        return 0;
+    }
+
+    @Override
+    public long currentPosition() {
+        return 0;
+    }
+
     @Override
     public void setOnEnd(Runnable callback) {
         onEnd = callback;