diff --git a/src/main/java/device/cdPlayer/CDPlayer.java b/src/main/java/device/cdPlayer/CDPlayer.java
index 6cc7b77..ace5b17 100644
--- a/src/main/java/device/cdPlayer/CDPlayer.java
+++ b/src/main/java/device/cdPlayer/CDPlayer.java
@@ -65,7 +65,7 @@ public class CDPlayer implements Device {
         return null;
     }
 
-    //Getters und Setters
+    //Getters, Setters und SupportMethods
     public void setCD(CD _loadedCD) {
         loadedCD=_loadedCD;
         this.setCdDriveContent();
@@ -76,4 +76,8 @@ public class CDPlayer implements Device {
         CdDriveContent = 1;
     }
 
+    public void tapOnCdFlap(){
+        this.CdFlap+=1;
+    }
+
 }
diff --git a/src/test/java/device/cdPlayer/CDPlayerTest.java b/src/test/java/device/cdPlayer/CDPlayerTest.java
index eb63e35..3d651ac 100644
--- a/src/test/java/device/cdPlayer/CDPlayerTest.java
+++ b/src/test/java/device/cdPlayer/CDPlayerTest.java
@@ -1,47 +1,101 @@
 package device.cdPlayer;
 
+import device.cdPlayer.exceptions.*;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+import org.mockito.junit.jupiter.MockitoExtension;
 
+import java.util.stream.Stream;
+
+import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.jupiter.api.Assertions.*;
 
+@ExtendWith(MockitoExtension.class)
 class CDPlayerTest {
-/*
-    @Test
-    void louder() {
-    }
 
-    @Test
-    void quieter() {
+    @ParameterizedTest
+    @MethodSource("playTestData")
+    void play(String testName, CDPlayer _cdPlayer,Exception exception , String expectedResult) {
+        if(exception!=null){
+            Exception newException=assertThrows(exception.getClass(),()->_cdPlayer.play());
+            assertEquals(expectedResult, newException.getMessage());
+        }else{
+            assertThat(_cdPlayer.play()).describedAs(testName).isEqualTo(expectedResult);
+        }
     }
+    static Stream<Arguments> playTestData () {
+        //some PlayLists
+        String[] videoPlayList=new String[]{"Video 01","Video 02","Video 03","Video 04","Video 05"};
+        String[] audioPlayList=new String[]{"Audio 01","Audio 02","Audio 03","Audio 04","Audio 05"};
+        //some CDs
+        CD videoCD1=new CD("DVD",videoPlayList);
+        CD videoCD2=new CD("Blue-ray",videoPlayList);
+        CD audioCD1=new CD("Audio",audioPlayList);
+        CD audioCD2=new CD("MP3",audioPlayList);
+        CD audioCD3=new CD("WMA",audioPlayList);
+        CD audioCD4=new CD("AAC",audioPlayList);
 
-    @Test
-    void getVolume() {
-    }
+        //some CDPlayers
+        CDPlayer cdPlayer1=new CDPlayer();
 
-    @Test
-    void next() {
-    }
+        CDPlayer cdPlayer2=new CDPlayer();
+        cdPlayer2.tapOnCdFlap();
+        cdPlayer2.tapOnCdFlap();
 
-    @Test
-    void prev() {
-    }
+        CDPlayer cdPlayer3=new CDPlayer();
+        cdPlayer3.tapOnCdFlap();
 
-    @Test
-    void getInfoText() {
-    }
+        CDPlayer cdPlayer4=new CDPlayer();
+        cdPlayer4.tapOnCdFlap();
+        cdPlayer4.setCD(videoCD1);
 
-    @Test
-    void getOptions() {
-    }
+        //===================================
+        CDPlayer cdPlayer5=new CDPlayer();
+        cdPlayer5.tapOnCdFlap();
+        cdPlayer5.setCD(videoCD1);
+        cdPlayer5.tapOnCdFlap();
 
-    @Test
-    void chooseOption() {
-    }
+        CDPlayer cdPlayer6=new CDPlayer();
+        cdPlayer6.tapOnCdFlap();
+        cdPlayer6.setCD(videoCD2);
+        cdPlayer6.tapOnCdFlap();
+        //===================================
 
-    @Test
-    void play() {
-    }
+        CDPlayer cdPlayer7=new CDPlayer();
+        cdPlayer7.tapOnCdFlap();
+        cdPlayer7.setCD(audioCD1);
+        cdPlayer7.tapOnCdFlap();
+
+        CDPlayer cdPlayer8=new CDPlayer();
+        cdPlayer8.tapOnCdFlap();
+        cdPlayer8.setCD(audioCD2);
+        cdPlayer8.tapOnCdFlap();
 
- */
+        CDPlayer cdPlayer9=new CDPlayer();
+        cdPlayer9.tapOnCdFlap();
+        cdPlayer9.setCD(audioCD3);
+        cdPlayer9.tapOnCdFlap();
+
+        CDPlayer cdPlayer10=new CDPlayer();
+        cdPlayer10.tapOnCdFlap();
+        cdPlayer10.setCD(audioCD4);
+        cdPlayer10.tapOnCdFlap();
+
+        return Stream.of(
+                Arguments.of("[CdFlap=isClosed , CdDriveContent=>isEmpty] => NoCD", cdPlayer1, new NoCDException(), "CD must be set."),
+                Arguments.of("[CdFlap has been Opened and Closed, CdDriveContent=>isEmpty] => NoCD", cdPlayer2,new NoCDException(),"CD must be set."),
+                Arguments.of("[CdFlap=isOpen , CdDriveContent=>isEmpty] => CdFlapIsOpen", cdPlayer3,new CdFlapIsOpenException(),"Cd Flap must be closed."),
+                Arguments.of("[CdFlap=isOpen , CdDriveContent=>isSet] => CdFlapIsOpen", cdPlayer4,new CdFlapIsOpenException(),"Cd Flap must be closed."),
+                Arguments.of("[CdFlap=isClosed , CdDriveContent=>isSet, CdFormat=>DVD] => FormatNotSupported",cdPlayer5,new  FormatNotSupportedException(),"Cd-Format not supported."),
+                Arguments.of("[CdFlap=isClosed , CdDriveContent=>isSet, CdFormat=>Blue-ray] => FormatNotSupported",cdPlayer6, new  FormatNotSupportedException(),"Cd-Format not supported."),
+                Arguments.of("[CdFlap=isClosed , CdDriveContent=>isSet, CdFormat=>Audio] => AllConditionsForPlayMet", cdPlayer7,null,"AllConditionsForPlayMet"),
+                Arguments.of("[CdFlap=isClosed , CdDriveContent=>isSet, CdFormat=>MP3] => AllConditionsForPlayMet", cdPlayer8,null,"AllConditionsForPlayMet"),
+                Arguments.of("[CdFlap=isClosed , CdDriveContent=>isSet, CdFormat=>WMA] => AllConditionsForPlayMet", cdPlayer9,null,"AllConditionsForPlayMet"),
+                Arguments.of("[CdFlap=isClosed , CdDriveContent=>isSet, CdFormat=>AAC] => AllConditionsForPlayMet", cdPlayer10,null,"AllConditionsForPlayMet")
+        );
+    }
 
 }
\ No newline at end of file