Merge branch 'master' into feature-pr-USB-otherTests

and added first test case for setDevices() & productive code

Geraete.config

@@ -1,4 +1,4 @@
-CD=device.cdPlayer.CdPlayer
+CD=device.cdPlayer.CDPlayer
 Radio=device.radioPlayer.RadioPlayer
 USB=device.usbPlayer.UsbPlayer
 

src/main/java/BordComputer.java

@@ -0,0 +1,38 @@
+import device.Device;
+
+import java.io.FileReader;
+import java.lang.reflect.InvocationTargetException;
+import java.util.Arrays;
+import java.util.Properties;
+
+public class BordComputer {
+
+    String[] deviceNames;
+    Device[] installedDevices;
+    Device activeDevice = null;
+
+    public void readConfig() throws ClassNotFoundException, InvocationTargetException, NoSuchMethodException, InstantiationException, IllegalAccessException {
+
+        try (FileReader reader = new FileReader("Geraete.config")) {
+            Properties properties = new Properties();
+            properties.load(reader);
+            String[] values = properties.values().toArray(new String[0]);
+            Arrays.sort(values);
+            deviceNames = new String[values.length];
+            System.arraycopy(values, 0, deviceNames, 0, properties.size());
+            installedDevices = new Device[values.length];
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        setDevices();
+        activeDevice = installedDevices[0];
+    }
+
+    public void setDevices() throws NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException, ClassNotFoundException {
+        Class<?> c;
+        for (int i = 0; i < deviceNames.length; i++) {
+            c = Class.forName(deviceNames[i]);
+            installedDevices[i] = (Device) c.getConstructor().newInstance();
+        }
+    }
+}

src/main/java/device/cdPlayer/CD.java

@@ -4,6 +4,7 @@ public class CD {
     private String format;
     private String albumName;
     private String[] playList;
+    private String id;
 
     public CD() {}
 
@@ -16,6 +17,13 @@ public class CD {
         this.playList = playList;
     }
 
+    public CD(String format, String albumName, String[] playList, String id) {
+        this.format = format;
+        this.albumName = albumName;
+        this.playList = playList;
+        this.id = id;
+    }
+
     public String getFormat() {
         return format;
     }
@@ -39,4 +47,12 @@ public class CD {
     public void setAlbumName(String albumName) {
         this.albumName = albumName;
     }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
 }

src/main/java/device/cdPlayer/CDPlayer.java

@@ -18,7 +18,15 @@ public class CDPlayer implements Device {
     private List<String> supportedFormats = new ArrayList<String>(Arrays.asList(new String[] {"Audio","MP3","WMA","AAC"}));
 
     private String actualPlayTrack="";
-    private CD loadedCD;
+    private CD loadedCD=null;
+
+    private CDWechseler cdWechseler=null;
+    private String activeSource="CDDrive";//or CDWechseler
+
+    private List<String>favoriteSongs=new ArrayList<>();
+
+    private boolean muted=false;
+    private int oldVolume=0;
 
     @Override
     public void louder() {
@@ -48,9 +56,7 @@ public class CDPlayer implements Device {
         List<String> playList =  Arrays.asList(loadedCD.getPlayList());
         int indexOfActualPlayTrack=playList.indexOf(actualPlayTrack);
         int indexOfNextPlayTrack=(indexOfActualPlayTrack+1)%loadedCD.getPlayList().length;
-        //System.out.println("actualIndex= "+indexOfActualPlayTrack);
         this.actualPlayTrack=playList.get(indexOfNextPlayTrack );
-        //System.out.println("nextSong= "+actualPlayTrack);
     }
 
     @Override
@@ -86,7 +92,17 @@ public class CDPlayer implements Device {
 
     @Override
     public String chooseItem(int itemNr) {
-        return null;
+        if(this.loadedCD==null){
+            throw new ReturnValueNullException();
+        }
+        if(itemNr<0){
+            throw new NegativeInputException();
+        }
+        if(!(itemNr>=0  && itemNr<loadedCD.getPlayList().length)){
+            throw new ItemNumberNotFoundException();
+        }
+
+        return loadedCD.getPlayList()[itemNr];
     }
 
     @Override
@@ -96,12 +112,18 @@ public class CDPlayer implements Device {
 
     @Override
     public String mute() {
-        return null;
+        muted=true;
+        oldVolume=volume;
+        volume=0;
+        return ("Volume muted.");
     }
 
     @Override
     public String unmute() {
-        return null;
+        muted=false;
+        volume=oldVolume;
+        oldVolume=0;
+        return ("Volume unmute.");
     }
 
     @Override
@@ -121,6 +143,46 @@ public class CDPlayer implements Device {
         }
         return null;
     }
+    public String changePlaySource(){
+        if(activeSource.equals("CDDrive")) {
+            this.activeSource = "CDWechseler";
+            this.cdWechseler=new CDWechseler();
+            this.cdWechseler.activate();
+        }else this.activeSource="CDDrive";
+
+        return activeSource;
+    }
+    public void loadCDWechseler(CD cd,int index){
+        if(cdWechseler==null||!cdWechseler.isRunning()){
+            throw new CDWechselerNotRunningException();
+        }
+        if(!(this.supportedFormats.contains(cd.getFormat()))){
+            throw new FormatNotSupportedException();
+        }
+        if(index>10){
+            throw new MaxCapacityExceededException();
+        }
+        cdWechseler.loadOneCD(cd,index);
+        this.loadedCD=cdWechseler.getCDList().get(0);
+    }
+    public void changeToNextCD(){
+        if(activeSource.equals("CDDrive")){
+            throw new ChangeCDOnlyOnCDWechselerException();
+        }
+
+        List<CD> CDList = cdWechseler.getCDList();
+        int indexOfLoadedCD=CDList.indexOf(loadedCD);
+        int nextIndex=(indexOfLoadedCD+1)%CDList.size();
+        this.loadedCD=CDList.get(nextIndex);
+    }
+    public void addToFavoriteSongs(String song){
+        if(activeSource.equals("CDDrive")){
+            throw new CDWechselerNotRunningException();
+        }
+        if(!(favoriteSongs.contains(song))) {
+            favoriteSongs.add(song);
+        }
+    }
 
     //Getters, Setters und SupportMethods
     public void setCD(CD _loadedCD) {
@@ -165,8 +227,24 @@ public class CDPlayer implements Device {
         this.infoText=this.getClass().getSimpleName()+": Item->"+actualPlayTrack+" from Album->"+this.loadedCD.getAlbumName()+" running.";
     }
 
-
     public CD getCD() {
         return this.loadedCD;
     }
+
+    public CDWechseler getCdWechseler() {
+        return cdWechseler;
+    }
+
+    public List<String> getFavoriteSongs() {
+        return favoriteSongs;
+    }
+
+    public boolean isMuted() {
+        return muted;
+    }
+
+    public int getOldVolume() {
+        return oldVolume;
+    }
+
 }

src/main/java/device/cdPlayer/CDWechseler.java

@@ -0,0 +1,26 @@
+package device.cdPlayer;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class CDWechseler {
+    private List<CD> CDList=new ArrayList<>();
+    private boolean running=false;
+
+
+    public boolean isRunning() {
+        return running;
+    }
+
+    public void activate() {
+        this.running = true;
+    }
+
+    public List<CD> getCDList() {
+        return CDList;
+    }
+
+    public void loadOneCD(CD cd, int index){
+        CDList.add(cd);
+    }
+}

src/main/java/device/cdPlayer/exceptions/CDWechselerNotRunningException.java

@@ -0,0 +1,8 @@
+package device.cdPlayer.exceptions;
+
+public class CDWechselerNotRunningException extends RuntimeException {
+
+    public CDWechselerNotRunningException() {
+        super("CDWechseler must be active for using.");
+    }
+}

src/main/java/device/cdPlayer/exceptions/ChangeCDOnlyOnCDWechselerException.java

@@ -0,0 +1,7 @@
+package device.cdPlayer.exceptions;
+
+public class ChangeCDOnlyOnCDWechselerException extends RuntimeException{
+    public ChangeCDOnlyOnCDWechselerException(){
+        super("Change to next CD olny when CDWechseler is selected");
+    }
+}

src/main/java/device/cdPlayer/exceptions/ItemNumberNotFoundException.java

@@ -0,0 +1,7 @@
+package device.cdPlayer.exceptions;
+
+public class ItemNumberNotFoundException extends RuntimeException {
+    public ItemNumberNotFoundException() {
+        super("Given ItemNumber ist not in the Album.");
+    }
+}

src/main/java/device/cdPlayer/exceptions/MaxCapacityExceededException.java

@@ -0,0 +1,7 @@
+package device.cdPlayer.exceptions;
+
+public class MaxCapacityExceededException extends RuntimeException{
+    public MaxCapacityExceededException(){
+        super("Max capacity  of 10-CDs is already exceeded.");
+    }
+}

src/main/java/device/cdPlayer/exceptions/NegativeInputException.java

@@ -0,0 +1,7 @@
+package device.cdPlayer.exceptions;
+
+public class NegativeInputException extends RuntimeException{
+    public NegativeInputException() {
+        super("InputNumber must be positive.");
+    }
+}

src/main/java/device/radioPlayer/RadioPlayer.java

@@ -1,14 +1,13 @@
 package device.radioPlayer;
 
 import device.Device;
-
+import java.lang.reflect.Method;
 import java.time.LocalDateTime;
 import java.util.ArrayList;
+import java.util.Arrays;
 
 public class RadioPlayer implements Device {
 
-    private int x;
-
     public RadioPlayer() {
         super();
         savedPlaylist.add("YouFM");
@@ -17,13 +16,13 @@ public class RadioPlayer implements Device {
         playedStation = savedPlaylist.get(0);
     }
 
-    ArrayList<String> savedPlaylist = new ArrayList<String>();
-    ArrayList<String> regionPlaylist = new ArrayList<String>();
+    ArrayList<String> savedPlaylist = new ArrayList<>();
+    ArrayList<String> regionPlaylist = new ArrayList<>();
     LocalDateTime now = LocalDateTime.now();
     int hour = now.getHour();
-    int Lautstaerke = 0;
+    int volume = 0;
     int savedVolume;
-    String playedStation = "";
+    String playedStation;
 
     public String getYouFMInfoByTime(int x) {
         if (x >= 5 && x < 10) return YouFMInfo[0];
@@ -61,8 +60,8 @@ public class RadioPlayer implements Device {
     String[] AntenneBYInfo = {"ANTENNE BAYERN Guten Morgen Bayern", "ANTENNE BAYERN bei der Arbeit", "ANTENNE BAYERN am Nachmittag", "ANTENNE BAYERN am Abend", "ANTENNE BAYERN Hit-Nacht"};
 
 
-    public void setLautstaerke(int lautstaerke) {
-        Lautstaerke = lautstaerke;
+    public void setVolume(int volume) {
+        this.volume = volume;
     }
 
     public void changeRegion(String region) {
@@ -96,21 +95,21 @@ public class RadioPlayer implements Device {
 
     @Override
     public void louder() {
-        if (Lautstaerke < 100) {
-            Lautstaerke += 1;
-        } else Lautstaerke = 100;
+        if (volume < 100) {
+            volume += 1;
+        } else volume = 100;
     }
 
     @Override
     public void quieter() {
-        if (Lautstaerke > 0) {
-            Lautstaerke -= 1;
-        } else Lautstaerke = 0;
+        if (volume > 0) {
+            volume -= 1;
+        } else volume = 0;
     }
 
     @Override
     public int getVolume() {
-        return Lautstaerke;
+        return volume;
     }
 
     @Override
@@ -149,12 +148,22 @@ public class RadioPlayer implements Device {
 
     @Override
     public String getInfoText() {
-        return null;
+        if (showStationInfo().equals("")) return buildInfoText();
+        return (buildInfoText() + "\n Now playing: " + showStationInfo());
+    }
+
+    private String buildInfoText() {
+        String infoText = playedStation;
+        if (regionPlaylist.contains(playedStation))
+            return ("Regional playlist: " + (regionPlaylist.indexOf(playedStation) + 1) + infoText);
+        else return ("Saved playlist: " + (savedPlaylist.indexOf(playedStation) + 1) + infoText);
     }
 
     @Override
     public String[] getOptions() {
-        return new String[0];
+        Method[] methods = this.getClass().getDeclaredMethods();
+
+        return Arrays.stream(methods).map(Method::getName).toArray(String[]::new);
     }
 
     @Override
@@ -195,17 +204,16 @@ public class RadioPlayer implements Device {
     @Override
     public String mute() {
         savedVolume = getVolume();
-        setLautstaerke(0);
+        setVolume(0);
         return "RadioPlayer is muted now";
     }
 
     @Override
     public String unmute() {
-        setLautstaerke(savedVolume);
+        setVolume(savedVolume);
         return ("RadioPlayer is unmuted Volume is set to " + getVolume());
     }
 
-
     @Override
     public String play() {
         if (regionPlaylist.contains(playedStation))
@@ -225,8 +233,6 @@ public class RadioPlayer implements Device {
             default:
                 return "";
         }
-
-
     }
 
     public String saveStation() {
@@ -236,7 +242,6 @@ public class RadioPlayer implements Device {
         return "Station " + playedStation + " is saved in your Station list";
     }
 
-
     public String deleteStation() {
         String station = playedStation;
         if ((savedPlaylist.size()) > 1) {

src/main/java/device/usbPlayer/USB_Stick.java

@@ -39,14 +39,19 @@ public class USB_Stick {
 
    USB_Stick(String a){
 
+    }
+
+    USB_Stick(ArrayList<String> a1) {
+
+        Folders.add(a1);
+        currentAlbum = 0;
+
     }
     public ArrayList<String> getAlbum() throws NoFolderFound{
         if(Folders.size()==0) {
-            System.out.println("list ist leer");
             throw new NoFolderFound("The USB Drive is empty");
         }
         else {
-            System.out.println("nicht leer");
             return Folders.get(currentAlbum);
         }
     }

src/main/java/device/usbPlayer/UsbPlayer.java

@@ -2,6 +2,7 @@ package device.usbPlayer;
 
 import device.Device;
 
+import java.lang.reflect.Method;
 import java.util.ArrayList;
 
 public class UsbPlayer implements Device {
@@ -12,6 +13,8 @@ public class UsbPlayer implements Device {
     private Boolean isConnected;
     private Boolean isDefect;
     int Lautstaerke = 0;
+    int soundWas = -1;
+
     public USB_Stick USBDrive = new USB_Stick();
 
     public ArrayList<String> getPlaylist() {
@@ -61,7 +64,7 @@ public class UsbPlayer implements Device {
     }
 
     //*********constructure********
-    public UsbPlayer() {
+    public UsbPlayer(USB_Stick stick) {
         super();
         isDefect = false;
         isConnected = true;
@@ -70,11 +73,13 @@ public class UsbPlayer implements Device {
         Playlist.add("Musik 03.mp3");
         playTrack = Playlist.get(0);*/
         try {
-            Playlist = USBDrive.getAlbum();
+            Playlist = stick.getAlbum();
         } catch (NoFolderFound e) {
             e.printStackTrace();
         }
+        if (isAllAudio()) {
             playTrack = Playlist.get(0);
+        }
 
     }
 
@@ -100,6 +105,7 @@ public class UsbPlayer implements Device {
     //**********search method*************
     @Override
     public void quieter() {
+        if (this.soundWas == -1) {
             if (Lautstaerke > 0) {
                 Lautstaerke -= 1;
             } else {
@@ -107,32 +113,41 @@ public class UsbPlayer implements Device {
             }
         }
 
+    }
+
     @Override
     public void louder() {
+        if (this.soundWas == -1) {
             if (Lautstaerke < 100) {
                 Lautstaerke += 1;
             } else {
                 Lautstaerke = 100;
             }
         }
+    }
 
     public void Louder_10() {
+        if (this.soundWas == -1) {
             Lautstaerke += 10;
             if (Lautstaerke > 100) {
                 Lautstaerke = 100;
             }
         }
 
+    }
+
     public void quieter_10() {
+        if (this.soundWas == -1) {
             Lautstaerke -= 10;
             if (Lautstaerke < 0) {
                 Lautstaerke = 0;
             }
         }
+    }
 
     @Override
     public int getVolume() {
-        return 0;
+        return Lautstaerke;
     }
 
     @Override
@@ -154,32 +169,60 @@ public class UsbPlayer implements Device {
 
     @Override
     public String getInfoText() {
-        return null;
+        String InfoText = "";
+        if (isAllAudio()) {
+            InfoText = "USB Player is on : " + this.getPlayTrack();
+        } else
+            InfoText = "USB Player with no Albums";
+        return InfoText;
     }
 
     @Override
     public String[] getOptions() {
-        return new String[0];
+
+        Method[] methods=this.getClass().getDeclaredMethods();
+        String[] methodsList =new String[methods.length];
+        for (int i = 0; i <methods.length ; i++) {
+            methodsList[i]=methods[i].getName();
+        }
+        return  methodsList;
     }
 
     @Override
     public String chooseItem(int itemNr) {
-        return null;
+        String Message="";
+        if (itemNr < this.getPlaylist().size() && itemNr >= 0) {
+            Message= this.getPlaylist().get(itemNr ).toString();
+        }else if(itemNr < 0){
+            Message="The Nr is smaller than 0";
+        }else Message="The Nr is bigger than 0";
+        return Message;
     }
 
+
+
     @Override
     public String[] getItemList() {
-        return null;
+        String array[] = new String[getPlaylist().size()];
+        for(int j =0;j<getPlaylist().size();j++){
+            array[j] = getPlaylist().get(j);
+        }
+        return array;
     }
 
     @Override
     public String mute() {
-        return null;
+        this.soundWas = getLautstaerke();
+        setLautstaerke(0);
+        return "muted";
     }
 
     @Override
     public String unmute() {
-        return null;
+
+        setLautstaerke(soundWas);
+        this.soundWas = -1;
+        return "unmuted";
     }
 
 
@@ -246,4 +289,6 @@ public class UsbPlayer implements Device {
         //go to the last Song
         setPlayTrack(this.getPlaylist().get(this.getPlaylist().size() - 1));
     }
+
+
 }

src/test/java/BordComputerTest.java

@@ -0,0 +1,84 @@
+import device.Device;
+import device.cdPlayer.CDPlayer;
+import device.radioPlayer.RadioPlayer;
+import device.usbPlayer.UsbPlayer;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import java.io.FileReader;
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+import java.util.Properties;
+import java.util.stream.Stream;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.*;
+
+class BordComputerTest {
+
+    @ParameterizedTest
+    @MethodSource("readConfigOptions")
+    void readConfigTest(String testName, String testTyp, BordComputer testBc, String expectedResult) {
+        if (testTyp.equals("count")) {
+            assertThat(fileReaderCount()).describedAs(testName).isEqualTo(testBc.deviceNames.length);
+        }
+        if (testTyp.equals("count1")) {
+            assertThat(fileReaderCount()).describedAs(testName).isEqualTo(testBc.installedDevices.length);
+        }
+        if (testTyp.equals("item1")) {
+            assertThat(testBc.deviceNames[0]).describedAs(testName).isEqualTo(expectedResult);
+        }
+        if (testTyp.equals("item2")) {
+            assertThat(testBc.deviceNames[1]).describedAs(testName).isEqualTo(expectedResult);
+        }
+        if (testTyp.equals("item3")) {
+            assertThat(testBc.deviceNames[2]).describedAs(testName).isEqualTo(expectedResult);
+        }
+    }
+
+    static Stream<Arguments> readConfigOptions() throws ClassNotFoundException, InvocationTargetException, NoSuchMethodException, InstantiationException, IllegalAccessException {
+        BordComputer bc1 = new BordComputer();
+        bc1.readConfig();
+
+        return Stream.of(
+                Arguments.of("Check if file reader is getting every item in Geraete.config", "count", bc1, ""),
+                Arguments.of("Check if file reader is getting the first element", "item1", bc1, "device.cdPlayer.CDPlayer"),
+                Arguments.of("Check if file reader is getting the second element", "item2", bc1, "device.radioPlayer.RadioPlayer"),
+                Arguments.of("Check if file reader is getting the third element", "item3", bc1, "device.usbPlayer.UsbPlayer"),
+                Arguments.of("Test if installed devices has the length", "count1", bc1, "")
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("setDevicesOptions")
+    void setDevicesTest(String testName, BordComputer testBc, String testTyp, Boolean bool) {
+        Boolean boolActual = null;
+        if (testTyp.equals("0")) boolActual = (testBc.installedDevices[0] instanceof CDPlayer);
+        if (testTyp.equals("1")) boolActual = (testBc.installedDevices[1] instanceof RadioPlayer);
+        if (testTyp.equals("2")) boolActual = (testBc.installedDevices[2] instanceof UsbPlayer);
+        assertThat(boolActual).describedAs(testName).isEqualTo(bool);
+    }
+
+    static Stream<Arguments> setDevicesOptions() throws ClassNotFoundException, InvocationTargetException, NoSuchMethodException, InstantiationException, IllegalAccessException {
+        BordComputer bc = new BordComputer();
+        bc.readConfig();
+        return Stream.of(
+                Arguments.of("Test if installedDevices[0] is instance of CDPlayer", bc, "0", true),
+                Arguments.of("Test if installedDevices[1] is instance of RadioPlayer", bc, "1", true),
+                Arguments.of("Test if installedDevices[2] is instance of UsbPlayer", bc, "2", true)
+        );
+    }
+
+    public int fileReaderCount() {
+        int count = 0;
+        try (FileReader reader = new FileReader("Geraete.config")) {
+            Properties properties = new Properties();
+            properties.load(reader);
+            count = properties.size();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return count;
+    }
+}

src/test/java/device/cdPlayer/CDPlayerTest.java

@@ -327,4 +327,282 @@ class CDPlayerTest {
         );
     }
 
+    @ParameterizedTest
+    @MethodSource("chooseItemTestData")
+    void chooseItemTest(String testName,String cases, CDPlayer _cdPlayer,Exception exception ) {
+        if(cases.equals("Case1")) {
+            Exception newException = assertThrows(exception.getClass(), () -> _cdPlayer.chooseItem(1));
+            assertEquals(ReturnValueNullException.class, newException.getClass());
+        }
+        if(cases.equals("Case2")) {
+            Exception newException = assertThrows(exception.getClass(), () -> _cdPlayer.chooseItem(200));
+            assertEquals(ItemNumberNotFoundException.class, newException.getClass());
+        }
+        if(cases.equals("Case3")) {
+            Exception newException = assertThrows(exception.getClass(), () -> _cdPlayer.chooseItem(-1));
+            assertEquals(NegativeInputException.class, newException.getClass());
+        }
+        if(cases.equals("Case4")) {
+            assertThat(_cdPlayer.chooseItem(1).contains("2")).describedAs(testName).isEqualTo(true);
+        }
+    }
+    static Stream<Arguments> chooseItemTestData () {
+        CDPlayer cdPlayer1 = new CDPlayer();
+
+        String[] audioPlayList=new String[]{"Audio 01","Audio 02","Audio 03","Audio 04","Audio 05"};
+        CD audioCD1=new CD("Audio",audioPlayList);
+        CDPlayer cdPlayer2 = new CDPlayer();
+        cdPlayer2.tapOnCdFlap();
+        cdPlayer2.setCD(audioCD1);
+        cdPlayer2.tapOnCdFlap();
+
+        return Stream.of(
+                Arguments.of("[chooseItem() by notSetCD ] => shouldThrowReturnValueNullException","Case1", cdPlayer1,new ReturnValueNullException()),
+                Arguments.of("[chooseItem() by invalidInput ] => shouldThrowItemNumberNotFoundException","Case2", cdPlayer2,new ItemNumberNotFoundException()),
+                Arguments.of("[chooseItem() by invalidInput:negativeNumber] => shouldThrowItemNumberNotFoundException","Case3", cdPlayer2,new NegativeInputException()),
+                Arguments.of("[chooseItem() by validInput] => shouldReturnMsgWithinTheItemNr","Case4", cdPlayer2,null)
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("changePlaySourceData")
+    void changePlaySourceTest(String testName,String cases, CDPlayer _cdPlayer) {
+
+        if(cases.equals("Case1")) {
+            String returnVal = _cdPlayer.changePlaySource();
+            assertThat(returnVal).describedAs(testName).isEqualTo("CDWechseler");
+        }
+        if(cases.equals("Case2")) {
+            String returnVal = _cdPlayer.changePlaySource();
+            assertThat(returnVal).describedAs(testName).isEqualTo("CDDrive");
+        }
+    }
+    static Stream<Arguments> changePlaySourceData () {
+        CDPlayer cdPlayer1 = new CDPlayer();
+
+        CDPlayer cdPlayer2 = new CDPlayer();
+        cdPlayer2.changePlaySource();
+
+        return Stream.of(
+                Arguments.of("[changePlaySource() by activeSource=CDDrive ] => shouldReturnCDWechseler","Case1", cdPlayer1),
+                Arguments.of("[changePlaySource() by activeSource=CDWechseler ] => shouldReturnCDDrive","Case2", cdPlayer2)
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("loadCDWechselerData")
+    void loadCDWechselerTest(String testName,String cases, CDPlayer _cdPlayer,CD cd,Exception exception) {
+        if(cases.equals("Case1")) {
+            Exception newException = assertThrows(exception.getClass(), () -> _cdPlayer.loadCDWechseler(cd,0));
+            assertEquals(CDWechselerNotRunningException.class, newException.getClass());
+        }
+        if(cases.equals("Case2")) {
+            _cdPlayer.changePlaySource();
+            Exception newException = assertThrows(exception.getClass(), () -> _cdPlayer.loadCDWechseler(cd,0));
+            assertEquals(FormatNotSupportedException.class, newException.getClass());
+        }
+        if(cases.equals("Case3")) {
+            _cdPlayer.changePlaySource();
+            _cdPlayer.loadCDWechseler(cd,0);
+            CD firstCD=_cdPlayer.getCdWechseler().getCDList().get(0);
+            assertThat(firstCD).describedAs(testName).isNotEqualTo(null);
+        }
+        if(cases.equals("Case4")) {
+            _cdPlayer.changePlaySource();
+            Exception newException=assertThrows(exception.getClass(), () -> _cdPlayer.loadCDWechseler(cd, 12));
+            assertEquals(MaxCapacityExceededException.class, newException.getClass());
+        }
+    }
+    static Stream<Arguments> loadCDWechselerData () {
+        CDPlayer cdPlayer1 = new CDPlayer();
+        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"};
+
+        CD audioCD1=new CD("Audio",audioPlayList);
+        CD DVD=new CD("DVD",videoPlayList);
+        return Stream.of(
+                Arguments.of("[loadCDWechseler() by notRunning=CDWechseler ] => shouldThrowAnException", "Case1", cdPlayer1,audioCD1,new CDWechselerNotRunningException()),
+                Arguments.of("[loadCDWechseler() by WrongCDFormat ] => shouldThrowAnException", "Case2", cdPlayer1,DVD,new FormatNotSupportedException()),
+                Arguments.of("[loadCDWechseler() by leadingFirstCD ] => CDListOfCDWechselerShouldHaveLength1", "Case3", cdPlayer1,audioCD1,null),
+                Arguments.of("[loadCDWechseler() by MaxCapacityExceeded:Max=10 ] => shouldThrowAnException", "Case4", cdPlayer1,audioCD1,new MaxCapacityExceededException())
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("changeToNextCDData")
+    void changeToNextCDTest(String testName,String cases, CDPlayer _cdPlayer,Exception exception) {
+        if(cases.equals("Case1")) {
+            Exception newException = assertThrows(exception.getClass(), () -> _cdPlayer.changeToNextCD());
+            assertEquals(ChangeCDOnlyOnCDWechselerException.class, newException.getClass());
+        }
+        if(cases.equals("Case2")) {
+            CD actualCD=_cdPlayer.getCD();
+            _cdPlayer.changeToNextCD();
+            CD nextCD=_cdPlayer.getCD();
+            assertThat(nextCD).describedAs(testName).isNotEqualTo(null);
+        }
+        if(cases.equals("Case3")) {
+            CD actualCD=_cdPlayer.getCD();
+            _cdPlayer.changeToNextCD();
+            CD nextCD=_cdPlayer.getCD();
+            assertThat(nextCD.getId()==actualCD.getId()).describedAs(testName).isNotEqualTo(true);
+        }
+        if(cases.equals("Case4")) {
+            CD actualCdBefore=_cdPlayer.getCD();
+            for (int i = 0; i <3 ; i++) {
+                _cdPlayer.changeToNextCD();
+            }
+            CD actualCdAfter=_cdPlayer.getCD();
+            assertThat(actualCdBefore.getId()==actualCdAfter.getId()).describedAs(testName).isEqualTo(true);
+        }
+    }
+    static Stream<Arguments> changeToNextCDData () {
+        String[] audioPlayList=new String[]{"Audio 01","Audio 02","Audio 03","Audio 04","Audio 05"};
+        CD audioCD1=new CD("Audio","PopMusic",audioPlayList,"XAc20044");
+        CD audioCD2=new CD("Audio","RockMusic",audioPlayList,"BLXPP78");
+        CD audioCD3=new CD("Audio","SalsaMusic",audioPlayList,"KKRP118");
+
+        CDPlayer cdPlayer1 = new CDPlayer();
+
+        CDPlayer cdPlayer2 = new CDPlayer();
+        cdPlayer2.changePlaySource();
+        cdPlayer2.loadCDWechseler(audioCD1,0);
+        cdPlayer2.loadCDWechseler(audioCD2,1);
+        cdPlayer2.loadCDWechseler(audioCD3,2);
+
+
+        CDPlayer cdPlayer3 = new CDPlayer();
+        cdPlayer3.changePlaySource();
+        cdPlayer3.loadCDWechseler(audioCD1,0);
+        cdPlayer3.loadCDWechseler(audioCD2,1);
+        cdPlayer3.loadCDWechseler(audioCD3,2);
+
+        CDPlayer cdPlayer4 = new CDPlayer();
+        cdPlayer4.changePlaySource();
+        cdPlayer4.loadCDWechseler(audioCD1,0);
+        cdPlayer4.loadCDWechseler(audioCD2,1);
+        cdPlayer4.loadCDWechseler(audioCD3,2);
+
+        return Stream.of(
+                Arguments.of("[changeToNextCD() by CDWechselerNotSelected ] => shouldThrowAnException", "Case1", cdPlayer1,new ChangeCDOnlyOnCDWechselerException()),
+                Arguments.of("[changeToNextCD()  checking the effect ] => loadedCDShouldNotReturnNull", "Case2", cdPlayer2,null),
+                Arguments.of("[changeToNextCD()  checking the effect 2 ] => loadedCDShouldNotHaveTheSameIdAsPrev", "Case3", cdPlayer3,null),
+                Arguments.of("[3x changeToNextCD()  changing from last to first CD] => FirstCDShouldBeTaken", "Case4", cdPlayer4,null)
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("addToFavoriteSongsData")
+    void addToFavoriteSongsTest(String testName,String cases, CDPlayer _cdPlayer,Exception exception) {
+        if(cases.equals("Case1")) {
+            String myFavoriteSong = _cdPlayer.getCD().getPlayList()[0];
+            _cdPlayer.addToFavoriteSongs(myFavoriteSong);
+            assertThat(_cdPlayer.getFavoriteSongs().get(0)).describedAs(testName).isEqualTo(myFavoriteSong);
+        }
+        if(cases.equals("Case2")) {
+            String myFavoriteSong1 = _cdPlayer.getCD().getPlayList()[0];
+            String myFavoriteSong2 = _cdPlayer.getCD().getPlayList()[0];
+            _cdPlayer.addToFavoriteSongs(myFavoriteSong1);
+            _cdPlayer.addToFavoriteSongs(myFavoriteSong2);
+            assertThat(_cdPlayer.getFavoriteSongs().size()>1).describedAs(testName).isNotEqualTo(true);
+        }
+        if(cases.equals("Case3")) {
+            String myFavoriteSong1 = _cdPlayer.getCD().getPlayList()[0];
+            Exception newException = assertThrows(exception.getClass(), () -> _cdPlayer.addToFavoriteSongs(myFavoriteSong1));
+            assertEquals(CDWechselerNotRunningException.class, newException.getClass());
+        }
+    }
+    static Stream<Arguments> addToFavoriteSongsData () {
+        String[] audioPlayList = new String[]{"Audio 01", "Audio 02", "Audio 03", "Audio 04", "Audio 05"};
+        CD audioCD1 = new CD("Audio", "PopMusic", audioPlayList, "XAc20044");
+        CD audioCD2=new CD("Audio","RockMusic",audioPlayList,"BLXPP78");
+
+        CDPlayer cdPlayer1 = new CDPlayer();
+        cdPlayer1.changePlaySource();
+        cdPlayer1.loadCDWechseler(audioCD1, 0);
+        cdPlayer1.loadCDWechseler(audioCD2, 1);
+
+        CDPlayer cdPlayer2 = new CDPlayer();
+        cdPlayer2.setCD(audioCD2);
+        return Stream.of(
+                Arguments.of("[addToFavoriteSongs() by addingOneSong] => favoriteSongsShouldReturnsThatAddedSong", "Case1", cdPlayer1, null),
+                Arguments.of("[addToFavoriteSongs() by addingDuplicatedSong] => SongShouldNotBeAdded", "Case2", cdPlayer1, null),
+                Arguments.of("[addToFavoriteSongs() by NotSelectingCDWechseler] => shouldThrowAnException", "Case3", cdPlayer2, new CDWechselerNotRunningException())
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("muteTestData")
+    void muteTest(String testName,String cases, CDPlayer _cdPlayer,String expectedResult) {
+        if(cases.equals("Case1")) {
+            assertThat(_cdPlayer.mute()).describedAs(testName).isEqualTo(expectedResult);
+        }
+        if(cases.equals("Case2")) {
+            _cdPlayer.mute();
+            assertThat(_cdPlayer.isMuted()).describedAs(testName).isEqualTo(true);
+        }
+        if(cases.equals("Case3")) {
+            _cdPlayer.louder();
+            _cdPlayer.louder();
+            _cdPlayer.mute();
+            assertThat(_cdPlayer.getVolume()).describedAs(testName).isEqualTo(0);
+        }
+        if(cases.equals("Case4")) {
+            for (int i = 0; i < 5; i++) {
+                _cdPlayer.louder();
+            }
+            _cdPlayer.mute();
+            assertThat(_cdPlayer.getOldVolume()).describedAs(testName).isEqualTo(5);
+        }
+    }
+    static Stream<Arguments> muteTestData () {
+        CDPlayer cdPlayer1 = new CDPlayer();
+        return Stream.of(
+                Arguments.of("[mute() by checkingTheReturnValue ] => ShouldReturnAString", "Case1", cdPlayer1, "Volume muted."),
+                Arguments.of("[mute() by checkingTheEffectAfterRun ] => VariableMutedShouldBeTrue", "Case2", cdPlayer1, "Volume muted."),
+                Arguments.of("[mute() after 2x louder() by checkingTheVolume] => VolumeShouldBeSetTo0", "Case3", cdPlayer1, "Volume muted."),
+                Arguments.of("[mute() after 5x louder() by checkingTheSavedOldVolume] => getOldVolumeShouldReturns_5", "Case4", cdPlayer1, "Volume muted.")
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("unmuteTestData")
+    void unmuteTest(String testName,String cases, CDPlayer _cdPlayer,String expectedResult) {
+        if(cases.equals("Case1")) {
+            assertThat(_cdPlayer.unmute()).describedAs(testName).isEqualTo(expectedResult);
+        }
+        if(cases.equals("Case2")) {
+            _cdPlayer.unmute();
+            assertThat(_cdPlayer.isMuted()).describedAs(testName).isEqualTo(false);
+        }
+        if(cases.equals("Case3")) {
+            for (int i = 0; i < 5; i++) {
+                _cdPlayer.louder();
+            }
+            _cdPlayer.mute();
+            _cdPlayer.unmute();
+            assertThat(_cdPlayer.isMuted()).describedAs(testName).isEqualTo(false);
+            assertThat(_cdPlayer.getVolume()).describedAs(testName).isEqualTo(5);
+        }
+        if(cases.equals("Case4")) {
+            for (int i = 0; i < 6; i++) {
+                _cdPlayer.louder();
+            }
+            _cdPlayer.mute();
+            _cdPlayer.unmute();
+            assertThat(_cdPlayer.isMuted()).describedAs(testName).isEqualTo(false);
+            assertThat(_cdPlayer.getOldVolume()).describedAs(testName).isEqualTo(0);
+        }
+    }
+    static Stream<Arguments> unmuteTestData () {
+        CDPlayer cdPlayer1 = new CDPlayer();
+        return Stream.of(
+                Arguments.of("[unmute() by checkingTheReturnValue ] => ShouldReturnAString", "Case1", cdPlayer1, "Volume unmute."),
+                Arguments.of("[unmute() by checkingTheEffectAfterRun ] => VariableMutedShouldBeFalse", "Case2", cdPlayer1, "Volume unmute."),
+                Arguments.of("[unmute() by 5x louder()-> mute()] => getVolumeShouldReturn_5", "Case3", cdPlayer1, "Volume unmute."),
+                Arguments.of("[unmute() by 6x louder()-> mute()] => getOldVolumeShouldReturn_0", "Case4", cdPlayer1, "Volume unmute.")
+        );
+    }
+
+
     }

src/test/java/device/radioPlayer/RadioPlayerTest.java

@@ -1,18 +1,22 @@
 package device.radioPlayer;
 
-
+import device.Device;
+import org.assertj.core.util.Strings;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.MethodSource;
 
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
 import java.util.stream.Stream;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
 class RadioPlayerTest {
 
-
     @ParameterizedTest
     @MethodSource("quieterLouderOptions")
     void quieterLouderTest(String testName, RadioPlayer testRp, int expectedResult) {
@@ -25,13 +29,13 @@ class RadioPlayerTest {
         RadioPlayer rp2 = new RadioPlayer();
         RadioPlayer rp3 = new RadioPlayer();
         RadioPlayer rp4 = new RadioPlayer();
-        rp1.setLautstaerke(0);
+        rp1.setVolume(0);
         rp1.louder();
-        rp2.setLautstaerke(100);
+        rp2.setVolume(100);
         rp2.louder();
-        rp3.setLautstaerke(1);
+        rp3.setVolume(1);
         rp3.quieter();
-        rp4.setLautstaerke(0);
+        rp4.setVolume(0);
         rp4.quieter();
         return Stream.of(
                 Arguments.of("Test for one step louder", rp1, 1),
@@ -55,7 +59,6 @@ class RadioPlayerTest {
         rp1.changeRegion("BY");
         rp2.changeRegion("HE");
         rp3.changeRegion("BW");
-
         return Stream.of(
                 Arguments.of("Test change Region to Bayern", rp1, "Antenne Bayern"),
                 Arguments.of("Test change Region to Hessen", rp2, "Hit Radio FFH"),
@@ -63,7 +66,6 @@ class RadioPlayerTest {
         );
     }
 
-
     @ParameterizedTest
     @MethodSource("prevNextOptions")
     void prevNextTest(String testName, RadioPlayer testRp, String expectedResult) {
@@ -89,7 +91,6 @@ class RadioPlayerTest {
         rp6.changeRegion("BY");
         rp6.saveStation();
         rp6.next();
-
         return Stream.of(
                 Arguments.of("Next Station Test for saved Stations", rp1, "Teddy"),
                 Arguments.of("Prev Station Test for saved Stations", rp2, "YouFM"),
@@ -100,40 +101,38 @@ class RadioPlayerTest {
         );
     }
 
-    @Test
-    void YouFMInfoByTimeTest() {
-        RadioPlayer rp = new RadioPlayer();
-        assertThat(rp.getYouFMInfoByTime(8)).describedAs("YouFM info by Time at 8.00").isEqualTo("YOUFM Good Morning Show");
-    }
-
-    @Test
-    void YouFMInfoByTime2Test() {
-        RadioPlayer rp = new RadioPlayer();
-        assertThat(rp.getYouFMInfoByTime(3)).describedAs("YouFM info by Time at 3.00").isEqualTo("YOUFM Junge Nacht der ARD");
-    }
-
-    @Test
-    void AntenneBYInfoByTimeTest() {
-        RadioPlayer rp = new RadioPlayer();
-        assertThat(rp.getAntenneBYInfoByTime(8)).describedAs("AntenneBY info by Time at 8.00").isEqualTo("ANTENNE BAYERN Guten Morgen Bayern");
-    }
-
-    @Test
-    void AntenneBYInfoByTime2Test() {
-        RadioPlayer rp = new RadioPlayer();
-        assertThat(rp.getAntenneBYInfoByTime(3)).describedAs("AntenneBY info by Time at 3.00").isEqualTo("ANTENNE BAYERN Hit-Nacht");
-    }
-
-    @Test
-    void BR3InfoByTimeTest() {
-        RadioPlayer rp = new RadioPlayer();
-        assertThat(rp.getBR3InfoByTime(5)).describedAs("BR3 info by Time at 5.00").isEqualTo("Sebastian Winkler und die Frühaufdreher");
+    @ParameterizedTest
+    @MethodSource("infoByTimeOptions")
+    void infoByTimeInfo(String testName, RadioPlayer testRp, String testTyp, int hour, String expectedResult) {
+        if(testTyp.equals("YouFM")) assertThat(testRp.getYouFMInfoByTime(hour)).describedAs(testName).isEqualTo(expectedResult);
+        if(testTyp.equals("BR3")) assertThat(testRp.getBR3InfoByTime(hour)).describedAs(testName).isEqualTo(expectedResult);
+        if(testTyp.equals("AntenneBY")) assertThat(testRp.getAntenneBYInfoByTime(hour)).describedAs(testName).isEqualTo(expectedResult);
     }
 
-    @Test
-    void BR3InfoByTime2Test() {
+    static Stream<Arguments> infoByTimeOptions() {
         RadioPlayer rp = new RadioPlayer();
-        assertThat(rp.getBR3InfoByTime(21)).describedAs("BR3 info by Time at 21.00").isEqualTo("Matuschke - der etwas andere Abend");
+        return Stream.of(
+                Arguments.of("Station info YouFm at 5:00 am", rp, "YouFM", 5, rp.YouFMInfo[0]),
+                Arguments.of("Station info YouFm at 10:00 am", rp, "YouFM", 10, rp.YouFMInfo[1]),
+                Arguments.of("Station info YouFm at 2:00 pm", rp, "YouFM", 14, rp.YouFMInfo[2]),
+                Arguments.of("Station info YouFm at 6:00 pm", rp, "YouFM", 18, rp.YouFMInfo[3]),
+                Arguments.of("Station info YouFm at 8:00 pm", rp, "YouFM", 20, rp.YouFMInfo[4]),
+                Arguments.of("Station info YouFm at 10:00 pm", rp, "YouFM", 22, rp.YouFMInfo[5]),
+                Arguments.of("Station info YouFm at 3:00 am", rp, "YouFM", 3, rp.YouFMInfo[6]),
+                Arguments.of("Station info BR3 at 5:00 am", rp, "BR3", 5, rp.BR3Info[0]),
+                Arguments.of("Station info BR3 at 9:00 am", rp, "BR3", 9, rp.BR3Info[1]),
+                Arguments.of("Station info BR3 at 12:00 am", rp, "BR3", 12, rp.BR3Info[2]),
+                Arguments.of("Station info BR3 at 1:00 pm", rp, "BR3", 13, rp.BR3Info[3]),
+                Arguments.of("Station info BR3 at 4:00 pm", rp, "BR3", 16, rp.BR3Info[4]),
+                Arguments.of("Station info BR3 at 7:00 pm", rp, "BR3", 19, rp.BR3Info[5]),
+                Arguments.of("Station info BR3 at 9:00 pm", rp, "BR3", 21, rp.BR3Info[6]),
+                Arguments.of("Station info BR3 at 3:00 am", rp, "BR3", 3, rp.BR3Info[7]),
+                Arguments.of("Station info AntenneBY at 5:00 am", rp, "AntenneBY", 5, rp.AntenneBYInfo[0]),
+                Arguments.of("Station info AntenneBY at 9:00 am", rp, "AntenneBY", 9, rp.AntenneBYInfo[1]),
+                Arguments.of("Station info AntenneBY at 12:00 am", rp, "AntenneBY", 12, rp.AntenneBYInfo[2]),
+                Arguments.of("Station info AntenneBY at 3:00 pm", rp, "AntenneBY", 15, rp.AntenneBYInfo[3]),
+                Arguments.of("Station info AntenneBY at 3:00 am", rp, "AntenneBY", 3, rp.AntenneBYInfo[4])
+        );
     }
 
     @ParameterizedTest
@@ -153,7 +152,6 @@ class RadioPlayerTest {
         rp3.next();
         RadioPlayer rp4 = new RadioPlayer();
         rp4.next();
-
         return Stream.of(
                 Arguments.of("Show Station Info for first saved Radio", rp1, rp1.getYouFMInfoByTime(rp1.hour)),
                 Arguments.of("Show Station Info for regional Station", rp2, rp2.getAntenneBYInfoByTime(rp2.hour)),
@@ -162,17 +160,6 @@ class RadioPlayerTest {
         );
     }
 
-    /*
-
-        @Test
-        void getInfoText() {
-        }
-
-        @Test
-        void getOptions() {
-        }
-    */
-
     @ParameterizedTest
     @MethodSource("chooseItemOptions")
     void testChooseItem(String testName, RadioPlayer testRp, String expectedResult) {
@@ -196,7 +183,6 @@ class RadioPlayerTest {
         RadioPlayer rp5 = new RadioPlayer();
         rp5.changeRegion("BY");
         rp5.chooseItem(-2);
-
         return Stream.of(
                 Arguments.of("Test select station in saved playlist to play with nr isn`t bigger than playlist size", rp, "Teddy"),
                 Arguments.of("Test select station in saved playlist to play with nr is bigger than playlist size. Last station in playlist gets played", rp1, "MegaHits"),
@@ -244,7 +230,6 @@ class RadioPlayerTest {
         rp2.saveStation();
         rp3.changeRegion("BY");
         rp3.saveStation();
-
         return Stream.of(
                 Arguments.of("Test for saving station in saved playlist", rp1, "normal", "Antenne Bayern"),
                 Arguments.of("Test for not saving station which is already in saved playlist", rp2, "normal", "MegaHits"),
@@ -269,7 +254,6 @@ class RadioPlayerTest {
         rp1.deleteStation();
         rp1.deleteStation();
         rp1.deleteStation();
-
         return Stream.of(
                 Arguments.of("Test for delete station in saved playlist", rp, "delete", false),
                 Arguments.of("Test for not delete station in saved playlist if this is the last station", rp1, "noDelete", true)
@@ -289,7 +273,6 @@ class RadioPlayerTest {
         RadioPlayer rp1 = new RadioPlayer();
         rp1.changeRegion("BY");
         rp1.changeToSavedPlaylist();
-
         return Stream.of(
                 Arguments.of("Test for change to saved playlist when you already in saved playlist", rp, "YouFM"),
                 Arguments.of("Test for change to saved playlist when in regional playlist", rp1, "YouFM")
@@ -313,7 +296,6 @@ class RadioPlayerTest {
         RadioPlayer rp2 = new RadioPlayer();
         rp2.next();
         rp2.changeOrderInSavedPlaylist(-1);
-
         return Stream.of(
                 Arguments.of("Test for change order in saved playlist with nr isn`t bigger than playlist size", rp, 0, "Teddy"),
                 Arguments.of("Test for change order in saved playlist with nr is than bigger playlist size put at the end of playlist", rp1, 2, "YouFM"),
@@ -336,7 +318,6 @@ class RadioPlayerTest {
         RadioPlayer rp = new RadioPlayer();
         RadioPlayer rp1 = new RadioPlayer();
         rp1.changeRegion("BY");
-
         return Stream.of(
                 Arguments.of("Test for return saved playlist", rp, "saved", rp.savedPlaylist.toArray(new String[0])),
                 Arguments.of("Test for return regional playlist", rp1, "region", rp1.regionPlaylist.toArray(new String[0]))
@@ -354,23 +335,90 @@ class RadioPlayerTest {
 
     static Stream<Arguments> muteOptions() {
         RadioPlayer rp = new RadioPlayer();
-        rp.setLautstaerke(25);
+        rp.setVolume(25);
         rp.mute();
         RadioPlayer rp1 = new RadioPlayer();
-        rp1.setLautstaerke(30);
+        rp1.setVolume(30);
         rp1.mute();
-
         return Stream.of(
                 Arguments.of("Test for mute RadioPlayer if volume is actually 0", "actual", rp, 0),
                 Arguments.of("Test for mute RadioPlayer if volume is saved before muting", "saved", rp1, 30)
         );
     }
+
     @Test
-    void TestUnmute() {
+    void testUnmute() {
         RadioPlayer rp = new RadioPlayer();
-        rp.setLautstaerke(40);
+        rp.setVolume(40);
         rp.mute();
         rp.unmute();
         assertThat(rp.getVolume()).describedAs("Test if unmute is setting the saved volume").isEqualTo(rp.savedVolume);
     }
+
+    @ParameterizedTest
+    @MethodSource("getInfoTextOptions")
+    void testGetInfoText(String testName, String testTyp, RadioPlayer testRp, boolean expectedResult) {
+        Boolean bool;
+        if (testTyp.equals("null")) bool = Strings.isNullOrEmpty(testRp.getInfoText());
+        else if (testTyp.contains("station")) bool = testRp.getInfoText().contains(testRp.playedStation);
+        else if (testTyp.contains("region")) bool = testRp.getInfoText().contains("Regional playlist");
+        else if (testTyp.contains("saved")) bool = testRp.getInfoText().contains("Saved playlist");
+        else if (testTyp.contains("savedNum"))
+            bool = testRp.getInfoText().contains(("0") + testRp.savedPlaylist.indexOf(testRp.playedStation) + 1);
+        else if (testTyp.contains("regionNum"))
+            bool = testRp.getInfoText().contains(("0") + testRp.regionPlaylist.indexOf(testRp.playedStation) + 1);
+        else if (testTyp.contains("stationInfo")) bool = testRp.getInfoText().contains("Now playing");
+        else bool = testRp.getInfoText().contains("Now playing");
+
+        assertThat(bool).describedAs(testName).isEqualTo(expectedResult);
+    }
+
+    static Stream<Arguments> getInfoTextOptions() {
+        RadioPlayer rp = new RadioPlayer();
+        RadioPlayer rp2 = new RadioPlayer();
+        rp2.changeRegion("BY");
+        RadioPlayer rp4 = new RadioPlayer();
+        rp4.next();
+        RadioPlayer rp5 = new RadioPlayer();
+        rp5.changeRegion("HE");
+        rp5.next();
+        RadioPlayer rp6 = new RadioPlayer();
+        rp6.changeRegion("BY");
+        RadioPlayer rp7 = new RadioPlayer();
+        rp7.next();
+        return Stream.of(
+                Arguments.of("Test for getInfoText is not empty or null", "null", rp, false),
+                Arguments.of("Test for getInfoText contains played station", "station", rp, true),
+                Arguments.of("Test for getInfoText contains regional playlist if played station is in it", "region", rp2, true),
+                Arguments.of("Test for getInfoText contains saved playlist if played station is in it", "saved", rp, true),
+                Arguments.of("Test for getInfoText contains station number in saved playlist", "savedNum", rp4, true),
+                Arguments.of("Test for getInfoText contains station number in regional playlist", "regionNum", rp5, true),
+                Arguments.of("Test for getInfoText contains station info if station has one", "stationInfo", rp6, true),
+                Arguments.of("Test for getInfoText not contains station info if station not has one", "noStationInfo", rp7, false)
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("getOptionsOptions")
+    void testGetOptions(String testName, String testTyp, RadioPlayer testRp) {
+        if (testTyp.equals("notNull")) assertThat(testRp.getOptions()).describedAs(testName).isNotEqualTo(null);
+        if (testTyp.equals("arrayLengthGreater0"))
+            assertThat(testRp.getOptions().length).describedAs(testName).isNotEqualTo(0);
+        else {
+            Method[] interfaceMethods = Device.class.getDeclaredMethods();
+            List<String> deviceMethods = new ArrayList<>(Arrays.asList(testRp.getOptions()));
+            for (Method interfaceMethod : interfaceMethods) {
+                assertThat(deviceMethods.contains(interfaceMethod.getName())).describedAs(testName).isEqualTo(true);
+            }
+        }
+    }
+
+    static Stream<Arguments> getOptionsOptions() {
+        RadioPlayer rp = new RadioPlayer();
+        return Stream.of(
+                Arguments.of("returnValue of getOptions is not null", "notNull", rp),
+                Arguments.of("should not return an empty array", "arrayLengthGreater0", rp),
+                Arguments.of("Test if all methods declared in interface device are available", "device", rp)
+        );
+    }
 }

src/test/java/device/usbPlayer/USB_StickTest.java

@@ -47,7 +47,6 @@ class USB_StickTest {
         );
     }
 
-    //ChangeAlbum
     @ParameterizedTest
     @MethodSource("ChangeAlbumOptions")
     void ChangeAlbumTest(String testName, USB_Stick s) throws NoFolderFound {
@@ -68,4 +67,6 @@ class USB_StickTest {
         );
     }
 
+
+
 }

src/test/java/device/usbPlayer/UsbPlayerTest.java

@@ -9,9 +9,10 @@ import java.util.ArrayList;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
+
 class UsbPlayerTest {
 
-    UsbPlayer up = new UsbPlayer();
+    //UsbPlayer up = new UsbPlayer();
 
     @ParameterizedTest
     @MethodSource("PlayOptions")
@@ -21,21 +22,22 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> PlayOptions() {
-        UsbPlayer up1 = new UsbPlayer();
-        UsbPlayer up8 = new UsbPlayer();
+        USB_Stick USBDrive = new USB_Stick();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
+        UsbPlayer up8 = new UsbPlayer(USBDrive);
         up8.setPlayTrack("");
-        UsbPlayer up2 = new UsbPlayer();
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
         ArrayList<String> l = new ArrayList<String>();
         l.add("a.mp3");
         l.add("b.mp3");
         l.add("c.gif");
         up2.setPlaylist(l);
-        UsbPlayer up3 = new UsbPlayer();
+        UsbPlayer up3 = new UsbPlayer(USBDrive);
         ArrayList<String> Pl = new ArrayList<String>();
         up3.setPlaylist(Pl);
-        UsbPlayer up6 = new UsbPlayer();
+        UsbPlayer up6 = new UsbPlayer(USBDrive);
         up6.setDefect(true);
-        UsbPlayer up7 = new UsbPlayer();
+        UsbPlayer up7 = new UsbPlayer(USBDrive);
         up7.setConnected(false);
 
 
@@ -57,14 +59,31 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> louderOptions() {
-        UsbPlayer up11 = new UsbPlayer();
+        USB_Stick USBDrive = new USB_Stick();
+        //first case
+        UsbPlayer up11 = new UsbPlayer(USBDrive);
         up11.louder();
-        UsbPlayer up22 = new UsbPlayer();
+        //second case
+        UsbPlayer up22 = new UsbPlayer(USBDrive);
         up22.setLautstaerke(100);
         up22.louder();
+        //third case
+        UsbPlayer up3 = new UsbPlayer(USBDrive);
+        up3.setLautstaerke(10);
+        up3.mute();
+        up3.louder();
+        //forth case
+        UsbPlayer up4 = new UsbPlayer(USBDrive);
+        up4.setLautstaerke(10);
+        up4.mute();
+        up4.unmute();
+        up4.louder();
+
         return Stream.of(
                 Arguments.of("Volume is : 1 ", up11, 1),
-                Arguments.of("Volume is : 100 ", up22, 100)
+                Arguments.of("Volume is : 100 ", up22, 100),
+                Arguments.of("Volume is muted,no change can be made ", up3, 0),
+                Arguments.of("Volume is unmuted,a change has been made ", up4, 11)
         );
     }
 
@@ -76,14 +95,33 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> quieterOptions() {
-        UsbPlayer up1 = new UsbPlayer();
+        USB_Stick USBDrive = new USB_Stick();
+        //first case
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
         up1.quieter();
-        UsbPlayer up2 = new UsbPlayer();
+        //second case
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
         up2.setLautstaerke(10);
         up2.quieter();
+
+        //third case
+        UsbPlayer up3 = new UsbPlayer(USBDrive);
+        up3.setLautstaerke(10);
+        up3.mute();
+        up3.quieter();
+
+        //forth case
+        UsbPlayer up4 = new UsbPlayer(USBDrive);
+        up4.setLautstaerke(10);
+        up4.mute();
+        up4.unmute();
+        up4.quieter();
+
         return Stream.of(
                 Arguments.of("Volume must stay 0 ", up1, 0),
-                Arguments.of("Volume must be 9 ", up2, 9)
+                Arguments.of("Volume must be 9 ", up2, 9),
+                Arguments.of("Volume is muted,no change can be made ", up3, 0),
+                Arguments.of("Volume is unmuted,a change has been made ", up4, 9)
         );
     }
 
@@ -96,13 +134,14 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> NextOptions() {
-        UsbPlayer up1 = new UsbPlayer();
+        USB_Stick USBDrive = new USB_Stick();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
         up1.next();
-        UsbPlayer up2 = new UsbPlayer();
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
         for (int i = 1; i < up2.getPlaylist().size(); i++) {
             up2.next();
         }
-        UsbPlayer up3 = new UsbPlayer();
+        UsbPlayer up3 = new UsbPlayer(USBDrive);
         for (int i = 1; i < up3.getPlaylist().size(); i++) {
             up3.next();
         }
@@ -123,9 +162,10 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> PrevOptions() {
-        UsbPlayer up1 = new UsbPlayer();
+        USB_Stick USBDrive = new USB_Stick();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
         up1.prev();
-        UsbPlayer up2 = new UsbPlayer();
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
         for (int i = 1; i < up2.getPlaylist().size(); i++) {//3
             up2.prev();
         }
@@ -145,22 +185,37 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> louder_10_Options() {
-        UsbPlayer up1 = new UsbPlayer();
+        USB_Stick USBDrive = new USB_Stick();
+        //first case
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
         up1.Louder_10();
-
-        UsbPlayer up2 = new UsbPlayer();
-        for (int i = 0; i <= 3; i++) {
+        //Second case
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
+        for (int i = 0; i < 3; i++) {
             up2.Louder_10();
         }
-        up2.quieter_10();
-
-        UsbPlayer up3 = new UsbPlayer();
+        //third case
+        UsbPlayer up3 = new UsbPlayer(USBDrive);
         up3.setLautstaerke(100);
         up3.Louder_10();
+        //forth case
+        UsbPlayer up4 = new UsbPlayer(USBDrive);
+        up4.setLautstaerke(10);
+        up4.mute();
+        up4.Louder_10();
+        //fifth case
+        UsbPlayer up5 = new UsbPlayer(USBDrive);
+        up5.setLautstaerke(10);
+        up5.mute();
+        up5.unmute();
+        up5.Louder_10();
+
         return Stream.of(
                 Arguments.of("Volume was 0, should be 10 ", up1, 10),
                 Arguments.of("Volume was 0, should be 30 ", up2, 30),
-                Arguments.of("Volume was 100, should stay 100 ", up3, 100)
+                Arguments.of("Volume was 100, should stay 100 ", up3, 100),
+                Arguments.of("Volume is muted,no change can be made ", up4, 0),
+                Arguments.of("Volume is unmuted,a change has been made ", up5, 20)
         );
     }
 
@@ -172,23 +227,38 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> quieter_10_Options() {
-        UsbPlayer up1 = new UsbPlayer();
+        USB_Stick USBDrive = new USB_Stick();
+        //first case
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
         up1.setLautstaerke(10);
         up1.quieter_10();
-
-        UsbPlayer up2 = new UsbPlayer();
+        //second case
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
         up2.setLautstaerke(50);
         for (int i = 0; i < 3; i++) {
             up2.quieter_10();
         }
-
-        UsbPlayer up3 = new UsbPlayer();
+        //third case
+        UsbPlayer up3 = new UsbPlayer(USBDrive);
         up3.quieter_10();
+        //forth case
+        UsbPlayer up4 = new UsbPlayer(USBDrive);
+        up4.setLautstaerke(11);
+        up4.mute();
+        up4.quieter_10();
+        //fifth case
+        UsbPlayer up5 = new UsbPlayer(USBDrive);
+        up5.setLautstaerke(11);
+        up5.mute();
+        up5.unmute();
+        up5.quieter_10();
 
         return Stream.of(
                 Arguments.of("Volume was 10, should be 0 ", up1, 0),
                 Arguments.of("Volume was 50, should be 20 ", up2, 20),
-                Arguments.of("Volume was 0, should stay 0 ", up3, 0)
+                Arguments.of("Volume was 0, should stay 0 ", up3, 0),
+                Arguments.of("Volume is muted,no change can be made ", up4, 0),
+                Arguments.of("Volume is unmuted,a change has been made ", up5, 1)
         );
     }
 
@@ -205,7 +275,8 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> FindSongOptions() {
-        UsbPlayer up1 = new UsbPlayer();
+        USB_Stick USBDrive = new USB_Stick();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
         return Stream.of(
                 Arguments.of("The song is not in the Album", up1.findSong("song 4"), -1),
                 Arguments.of("The song is in the Album", up1.findSong("Musik 02"), 1),
@@ -222,16 +293,17 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> GoToOptions() {
-        UsbPlayer up1 = new UsbPlayer();
+        USB_Stick USBDrive = new USB_Stick();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
         up1.GoTo("Musik 03.mp3");
 
-        UsbPlayer up2 = new UsbPlayer();
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
         up2.GoTo("Musik 04.mp3");
 
-        UsbPlayer up3 = new UsbPlayer();
+        UsbPlayer up3 = new UsbPlayer(USBDrive);
         up3.GoTo("Musik 02");
 
-        UsbPlayer up4 = new UsbPlayer();
+        UsbPlayer up4 = new UsbPlayer(USBDrive);
         up4.next();
         up4.GoTo("Musik");
 
@@ -252,45 +324,46 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> isAllAudioOptions() {
+        USB_Stick USBDrive = new USB_Stick();
         //mp3
-        UsbPlayer up1 = new UsbPlayer();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
         //mp4
-        UsbPlayer up2 = new UsbPlayer();
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
         ArrayList<String> Pl = new ArrayList<String>();
         Pl.add("Musik 01.mp4");
         Pl.add("Musik 02.mp4");
         Pl.add("Musik 03.mp4");
         up2.setPlaylist(Pl);
         //m4a
-        UsbPlayer up3 = new UsbPlayer();
+        UsbPlayer up3 = new UsbPlayer(USBDrive);
         ArrayList<String> Pl1 = new ArrayList<String>();
         Pl1.add("Musik 01.m4a");
         Pl1.add("Musik 02.m4a");
         Pl1.add("Musik 03.m4a");
         up3.setPlaylist(Pl1);
         //wav
-        UsbPlayer up4 = new UsbPlayer();
+        UsbPlayer up4 = new UsbPlayer(USBDrive);
         ArrayList<String> Pl2 = new ArrayList<String>();
         Pl2.add("Musik 01.wav");
         Pl2.add("Musik 02.wav");
         Pl2.add("Musik 03.wav");
         up4.setPlaylist(Pl2);
         //wma
-        UsbPlayer up5 = new UsbPlayer();
+        UsbPlayer up5 = new UsbPlayer(USBDrive);
         ArrayList<String> Pl3 = new ArrayList<String>();
         Pl3.add("Musik 01.wma");
         Pl3.add("Musik 02.wma");
         Pl3.add("Musik 03.wma");
         up5.setPlaylist(Pl3);
         //aac
-        UsbPlayer up6 = new UsbPlayer();
+        UsbPlayer up6 = new UsbPlayer(USBDrive);
         ArrayList<String> Pl4 = new ArrayList<String>();
         Pl4.add("Musik 01.aac");
         Pl4.add("Musik 02.aac");
         Pl4.add("Musik 03.aac");
         up6.setPlaylist(Pl4);
         //mixed Audio and text Files in the Album
-        UsbPlayer up7 = new UsbPlayer();
+        UsbPlayer up7 = new UsbPlayer(USBDrive);
         ArrayList<String> Pl5 = new ArrayList<String>();
         Pl5.add("Musik 01.aac");
         Pl5.add("Musik 02.txt");
@@ -318,14 +391,15 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> GoToFirstOptions() {
-        UsbPlayer up1 = new UsbPlayer();
+        USB_Stick USBDrive = new USB_Stick();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
         up1.GoToFirst();
 
-        UsbPlayer up2 = new UsbPlayer();
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
         up2.GoToFirst();
         up2.GoToFirst();
 
-        UsbPlayer up3 = new UsbPlayer();
+        UsbPlayer up3 = new UsbPlayer(USBDrive);
         up3.next();
         up3.GoToFirst();
 
@@ -344,15 +418,16 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> GoToLastOptions() {
+        USB_Stick USBDrive = new USB_Stick();
         //first case
-        UsbPlayer up1 = new UsbPlayer();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
         up1.GoToLast();
 
-        UsbPlayer up2 = new UsbPlayer();
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
         up2.GoToLast();
         up2.GoToLast();
 
-        UsbPlayer up3 = new UsbPlayer();
+        UsbPlayer up3 = new UsbPlayer(USBDrive);
         up3.next();
         up3.GoToLast();
 
@@ -372,16 +447,17 @@ class UsbPlayerTest {
     }
 
     static Stream<Arguments> setPlayTrackOptions() {
+        USB_Stick USBDrive = new USB_Stick();
         //first case
-        UsbPlayer up1 = new UsbPlayer();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
         up1.setPlayTrack("Musik 02.mp3");
 
         //Second Case
-        UsbPlayer up2 = new UsbPlayer();
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
         up2.setPlayTrack("Musik 02.mp3");
 
         //Third Case
-        UsbPlayer up3 = new UsbPlayer();
+        UsbPlayer up3 = new UsbPlayer(USBDrive);
         up3.setPlayTrack("Musik 04.mp3");
 
         return Stream.of(
@@ -389,6 +465,127 @@ class UsbPlayerTest {
                 Arguments.of("It should change the current Song if it is in the Albume", up2, "Musik 02.mp3"),
                 Arguments.of("Tried to change the Song,but the Song name does not exist in the Album(No change)", up3, "Musik 01.mp3")
         );
+    }////
+
+    @ParameterizedTest
+    @MethodSource("getInfoTextOptions")
+    void getInfoTextTest(String testName, UsbPlayer inputUSB, String expectedResult) {
+        String infotxt = inputUSB.getInfoText();
+        assertThat(infotxt).describedAs(testName).isEqualTo(expectedResult);
+    }
+
+    static Stream<Arguments> getInfoTextOptions() {
+        USB_Stick USBDrive = new USB_Stick();
+        ArrayList<String> Fileslist = new ArrayList<String>();
+        Fileslist.add("file 01.txt");
+        Fileslist.add("file 02.txt");
+        Fileslist.add("file 03.txt");
+        USB_Stick USBwithTXT = new USB_Stick(Fileslist);
+        //USB_Stick emptyUSB = new USB_Stick("");
+        //first case
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
+
+        //Second case
+        UsbPlayer up2 = new UsbPlayer(USBwithTXT);
+
+        return Stream.of(
+                Arguments.of("USB Player with Albums ", up1, "USB Player is on : " + up1.getPlayTrack()),
+                Arguments.of("USB Player with no Albums ", up2, "USB Player with no Albums")
+        );
+    }//"muted"
+
+    @ParameterizedTest
+    @MethodSource("muteOptions")
+    void muteTest(String testName, UsbPlayer inputUSB, String expectedResult, String testName2, String testName3) {
+        int prevSound = inputUSB.getLautstaerke();
+        String isMuted = inputUSB.mute();
+        assertThat(isMuted).describedAs(testName).isEqualTo(expectedResult);
+        //Second case
+        assertThat(inputUSB.getLautstaerke()).describedAs(testName2).isEqualTo(0);
+        //third case
+        assertThat(inputUSB.soundWas).describedAs(testName3).isEqualTo(prevSound);
+
+    }
+
+    static Stream<Arguments> muteOptions() {
+        USB_Stick USBDrive = new USB_Stick();
+
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
+        up1.mute();
+
+        return Stream.of(
+                Arguments.of("The Sound is muted ", up1, "muted", "Sound level is 0", "previous sound level is saved ")
+
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("unmuteOptions")
+    void unmuteTest(String testName, UsbPlayer inputUSB, String expectedResult, String testName2, String testName3) {
+        int prevSound = inputUSB.getLautstaerke();
+        String unMuted = inputUSB.unmute();
+        int currentStatusofSoundWas = inputUSB.soundWas;
+        //first case
+        assertThat(unMuted).describedAs(testName).isEqualTo(expectedResult);
+        //Second case
+        assertThat(inputUSB.getLautstaerke()).describedAs(testName2).isEqualTo(prevSound);
+        //third case
+        assertThat(inputUSB.soundWas).describedAs(testName3).isEqualTo(currentStatusofSoundWas);
+
+    }
+
+    static Stream<Arguments> unmuteOptions() {
+        USB_Stick USBDrive = new USB_Stick();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
+        up1.unmute();
+
+        return Stream.of(
+                Arguments.of("The Sound is unmuted ", up1, "unmuted", "Sound level has changed", "previous sound level is 0")
+
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("chooseItem")
+    void chooseItemTest(String testName, String inputSong, String expectedResult) {
+        assertThat(inputSong).describedAs(testName).isEqualTo(expectedResult);
+    }
+
+    static Stream<Arguments> chooseItem() {
+        USB_Stick USBDrive = new USB_Stick();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
+
+        return Stream.of(
+                Arguments.of("An Item from the Album was chosen ", up1.chooseItem(0), "Musik 01.mp3"),
+                Arguments.of("Incorrect Nr of Item was given < 0", up1.chooseItem(-1), "The Nr is smaller than 0"),
+                Arguments.of("Incorrect Nr of Item was given > 0", up1.chooseItem(5), "The Nr is bigger than 0")
+        );
+    }//getItemList
+
+    @ParameterizedTest
+    @MethodSource("getItemList")
+    void getItemListTest(String testName, UsbPlayer inputPlayer, String[] expectedResult) {
+        String[] Pl = inputPlayer.getItemList();
+
+        if (Pl.length > 0)
+            assertThat(Pl).contains("Musik 01.mp3", "Musik 02.mp3", "Musik 03.mp3").describedAs(testName);
+        else assertThat(Pl).describedAs("No Album").isEmpty();
+    }
+
+    static Stream<Arguments> getItemList() {
+        USB_Stick USBDrive = new USB_Stick();
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
+        String[] Pl = {"Musik 01.mp3", "Musik 02.mp3", "Musik 03.mp3"};
+
+        UsbPlayer up2 = new UsbPlayer(USBDrive);
+        ArrayList<String> Pl1 = new ArrayList<String>();
+        up2.setPlaylist(Pl1);
+        String[] l = new String[3];
+
+        return Stream.of(
+                Arguments.of("An  Album was returned ", up1, Pl, 1),
+                Arguments.of("There is no Album to be returned ", up2, l, 2)
+        );
     }
 
 }