@@ -0,0 +1,921 @@
+package com.github.bjoernpetersen.jmusicbot.playback;%0A%0Aimport static java.time.Duration.ofMillis;%0Aimport static java.time.Duration.ofSeconds;%0Aimport static org.junit.jupiter.api.Assertions.assertNotNull;%0Aimport static org.junit.jupiter.api.Assertions.assertTimeout;%0A%0Aimport org.junit.jupiter.api.BeforeEach;%0Aimport org.junit.jupiter.api.Test;%0A%0Aclass DummyPlaybackTest %7B%0A%0A  private DummyPlayback instance;%0A%0A  @BeforeEach%0A  void init() %7B%0A    instance = DummyPlayback.getInstance();%0A  %7D%0A%0A  @Test%0A  void getInstanceNotNull() %7B%0A    assertNotNull(DummyPlayback.getInstance());%0A  %7D%0A%0A  @Test%0A  void pause() %7B%0A    assertTimeout(ofMillis(50), () -%3E instance.pause());%0A  %7D%0A%0A  @Test%0A  void play() %7B%0A    assertTimeout(ofMillis(50), () -%3E instance.play());%0A  %7D%0A%0A  @Test%0A  void close() throws Exception %7B%0A    instance.close();%0A  %7D%0A%0A  @Test%0A  void waitForFinish() %7B%0A    assertTimeout(ofSeconds(3), () -%3E instance.waitForFinish());%0A  %7D%0A%7D%0A

Add DummyPlayback tests