Merge commit '0e9ae94aef323c9c14556c70347909e388dc0d58' into HEAD

# Conflicts:
#	src/main/java/BordComputer.java
#	src/test/java/BordComputerTest.java

src/main/java/BordComputer.java

@@ -1,4 +1,12 @@
 import device.Device;
+import device.cdPlayer.CD;
+import device.cdPlayer.CDPlayer;
+import device.cdPlayer.CD;
+import device.cdPlayer.CDPlayer;
+import device.radioPlayer.RadioPlayer;
+import device.usbPlayer.USB_Stick;
+import device.usbPlayer.UsbPlayer;
+import exception.NoItemEvenAllPreconditionAreMet;
 
 import java.io.FileReader;
 import java.lang.reflect.InvocationTargetException;
@@ -35,4 +43,81 @@ public class BordComputer {
             installedDevices[i] = (Device) c.getConstructor().newInstance();
         }
     }
+
+    public String changeDevice() {
+        Device[] tempDevices = new Device[installedDevices.length];
+        tempDevices[0] = installedDevices[1];
+        tempDevices[1] = installedDevices[2];
+        tempDevices[2] = installedDevices[0];
+        //replaces the lists
+        installedDevices = tempDevices;
+        //setting activeDevice
+        activeDevice = installedDevices[0];
+
+        String infoText="";
+        if(activeDevice instanceof CDPlayer){
+            CDPlayer cdPlayer=(CDPlayer) activeDevice;
+            String[] audioPlayList=new String[]{"Audio 01","Audio 02","Audio 03","Audio 04","Audio 05"};
+            //some CDs
+            CD audioCD1=new CD("Audio",audioPlayList);
+            audioCD1.setAlbumName("Love Songs");
+
+            cdPlayer.tapOnCdFlap();
+            cdPlayer.setCD(audioCD1);
+            cdPlayer.tapOnCdFlap();
+            cdPlayer.setInfoText();
+            infoText = cdPlayer.getInfoText();
+        }else{
+            infoText=activeDevice.getInfoText()+" ist activate";
+        }
+        return infoText;
+    }
+
+    public String play(){
+        String itemToPlay=null;
+        try {
+            itemToPlay=activeDevice.play();
+        }catch (RuntimeException exception) {
+            throw new NoItemEvenAllPreconditionAreMet();
+        }
+
+        return itemToPlay;
+    }
+
+    //===== Hilf-Funktionen ======
+
+    public Device getInstanceByName(String deviceName){
+        for (int i = 0; i <installedDevices.length ; i++) {
+            if(installedDevices[i].getClass().getSimpleName().equals(deviceName)){
+                return installedDevices[i];
+            }
+        }
+        return null;
+    }
+    public void meetAllPreconditionForPlay(){
+        if(activeDevice instanceof CDPlayer) {
+            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 cdPlayer = (CDPlayer) activeDevice;
+            cdPlayer.changePlaySource();
+            cdPlayer.loadCDWechseler(audioCD1, 0);
+            cdPlayer.loadCDWechseler(audioCD2, 1);
+
+            cdPlayer.setCD(cdPlayer.getCdWechseler().getCDList().get(0));
+            activeDevice = cdPlayer;
+        }
+        if(activeDevice instanceof UsbPlayer) {
+            USB_Stick USBDrive = new USB_Stick();
+            UsbPlayer up1 = new UsbPlayer(USBDrive);
+            activeDevice = up1;
+        }
+
+    }
+
+
+    public void setActiveDevice(Device activeDevice) {
+        this.activeDevice = activeDevice;
+    }
 }

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

@@ -28,6 +28,8 @@ public class CDPlayer implements Device {
     private boolean muted=false;
     private int oldVolume=0;
 
+    private String status="";
+
     @Override
     public void louder() {
         if(volume < 100) {
@@ -138,8 +140,8 @@ public class CDPlayer implements Device {
             throw new FormatNotSupportedException();
         }
         else if(!isCdFlapOpen()&&getCdDriveContent()==1&&checkFormat(loadedCD.getFormat())){
-            System.out.println(loadedCD.getFormat()+" "+this.actualPlayTrack+" is playing.");
-            return "AllConditionsForPlayMet";
+            status="AllConditionsForPlayMet";
+            return (loadedCD.getFormat()+":"+this.actualPlayTrack+" is playing.");
         }
         return null;
     }
@@ -247,4 +249,7 @@ public class CDPlayer implements Device {
         return oldVolume;
     }
 
+    public String getStatus() {
+        return status;
+    }
 }

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

@@ -8,7 +8,7 @@ public class USB_Stick {
     public ArrayList<ArrayList<String>> Folders = new ArrayList<>();
     int currentAlbum ;
 
-    USB_Stick() {
+    public USB_Stick() {
         ArrayList<String> a1 = new ArrayList<String>();
         a1.add("Musik 01.mp3");
         a1.add("Musik 02.mp3");

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

@@ -70,10 +70,7 @@ public class UsbPlayer implements Device {
         super();
         isDefect = false;
         isConnected = true;
-        /*Playlist.add("Musik 01.mp3");
-        Playlist.add("Musik 02.mp3");
-        Playlist.add("Musik 03.mp3");
-        playTrack = Playlist.get(0);*/
+
         try {
             Playlist = stick.getAlbum();
         } catch (NoFolderFound e) {

src/main/java/exception/NoItemEvenAllPreconditionAreMet.java

@@ -0,0 +1,7 @@
+package exception;
+
+public class NoItemEvenAllPreconditionAreMet extends RuntimeException{
+    public NoItemEvenAllPreconditionAreMet(){
+        super("No Item returned even all preconditions are met.");
+    }
+}

src/test/java/BordComputerTest.java

@@ -1,7 +1,9 @@
 import device.Device;
 import device.cdPlayer.CDPlayer;
+import device.cdPlayer.exceptions.NegativeInputException;
 import device.radioPlayer.RadioPlayer;
 import device.usbPlayer.UsbPlayer;
+import exception.NoItemEvenAllPreconditionAreMet;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.MethodSource;
@@ -81,4 +83,156 @@ class BordComputerTest {
         }
         return count;
     }
+
+    ////
+    @ParameterizedTest
+    @MethodSource("changeDeviceOptions")
+    void changeDeviceTest(String testName, BordComputer inputBC, Device[] oldDevices,Device prvDevice,String message ,int caseNr) {
+        Device[] newDevicesList = inputBC.installedDevices.clone();
+        if (caseNr == 1 ) {
+            assertThat(newDevicesList).describedAs(testName).isNotEqualTo(oldDevices);
+        }else if (caseNr == 2) {
+            Device currentDevice = inputBC.activeDevice;
+            assertThat(currentDevice).describedAs(testName).isNotEqualTo(prvDevice);
+        }else if (caseNr == 3) {
+            assertThat(inputBC.changeDevice()).describedAs(testName).isNotNull();
+        }else if (caseNr == 4) {
+            assertThat(inputBC.changeDevice()).describedAs(testName).isNotNull();
+        }else if (caseNr == 5) {
+            assertThat(inputBC.changeDevice()).describedAs(testName).isNotNull();
+        }else if (caseNr == 6) {
+            assertThat(inputBC.changeDevice()).describedAs(testName).contains("USB Player");
+        }else if (caseNr == 7) {
+            assertThat(inputBC.changeDevice()).describedAs(testName).contains("CDPlayer");
+        }else if (caseNr == 8) {
+            assertThat(inputBC.changeDevice()).describedAs(testName).contains("playlist");
+        }
+    }
+
+    static Stream<Arguments> changeDeviceOptions() throws ClassNotFoundException, InvocationTargetException, NoSuchMethodException, InstantiationException, IllegalAccessException {
+
+        //first case
+        BordComputer bc = new BordComputer();
+        bc.readConfig();
+        bc.setDevices();
+        Device[] currentDevices = new Device[bc.installedDevices.length];
+        currentDevices = bc.installedDevices.clone();
+        String m = bc.changeDevice();
+
+        //second case
+        BordComputer bc1 = new BordComputer();
+        bc1.readConfig();
+        bc1.setDevices();
+        Device prvDevice = bc1.activeDevice;
+        m =bc1.changeDevice();
+
+        //third case
+        BordComputer bc2 = new BordComputer();
+        bc2.readConfig();
+        bc2.setDevices();
+        m =bc2.changeDevice();
+
+        //forth case
+        BordComputer bc3 = new BordComputer();
+        bc3.readConfig();
+        bc3.setDevices();
+        m =bc3.changeDevice();
+        m =bc3.changeDevice(); //CDPlayer
+
+        //fifth case
+        BordComputer bc4 = new BordComputer();
+        bc4.readConfig();
+        bc4.setDevices();
+        m =bc4.changeDevice();
+        m =bc4.changeDevice(); //CDPlayer
+        m =bc4.changeDevice();
+
+        //sixth case
+        BordComputer bc5 = new BordComputer();
+        bc5.readConfig();
+        bc5.setDevices();
+        m =bc5.changeDevice();
+
+        //seventh case
+        BordComputer bc6 = new BordComputer();
+        bc6.readConfig();
+        bc6.setDevices();
+        m =bc6.changeDevice();
+        m =bc6.changeDevice();
+
+        //eighth case
+        BordComputer bc7 = new BordComputer();
+        bc7.readConfig();
+        bc7.setDevices();
+        m =bc7.changeDevice();
+        m =bc7.changeDevice();
+        m =bc7.changeDevice();
+
+        return Stream.of(
+                Arguments.of("The order of the installedDevices should be changed ", bc,currentDevices,null,"",1),
+                Arguments.of("The active Device should be changed ", bc1,null,prvDevice,"",2),
+                Arguments.of("The new Device returns a String ", bc2,null,prvDevice,bc2.activeDevice.toString(),3),
+                Arguments.of("The new Device returns a String ", bc3,null,prvDevice,null,4),
+                Arguments.of("The new Device returns a String ", bc4,null,prvDevice,null,5),
+                Arguments.of("The new Device returns Info ", bc5,null,prvDevice,null,6),
+                Arguments.of("The new Device returns Info ", bc6,null,prvDevice,null,7),
+                Arguments.of("The new Device returns Info ", bc6,null,prvDevice,null,8)
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("playDate")
+    void playTest(String testName, String testCase,BordComputer bordComputer,String instanceName) {
+        if(testCase.equals("Case1")) {
+            bordComputer.meetAllPreconditionForPlay();
+            assertThat(bordComputer.play()).describedAs(testName).isNotEqualTo(null);
+        }
+        if(testCase.equals("Case2")) {
+            Device radioPlayer=bordComputer.getInstanceByName(instanceName);
+            bordComputer.setActiveDevice(radioPlayer);
+            assertThat(bordComputer.play()).describedAs(testName).isNotEqualTo(null);
+        }
+        if(testCase.equals("Case3")) {
+            Device usbPlayer=bordComputer.getInstanceByName(instanceName);
+            bordComputer.setActiveDevice(usbPlayer);
+            bordComputer.meetAllPreconditionForPlay();
+            assertThat(bordComputer.play()).describedAs(testName).isNotEqualTo(null);
+        }
+        if(testCase.equals("Case4")) {
+            Exception newException = assertThrows(NoItemEvenAllPreconditionAreMet.class, () -> bordComputer.play());
+            assertEquals(NoItemEvenAllPreconditionAreMet.class, newException.getClass());
+            assertEquals(newException.getMessage(), "No Item returned even all preconditions are met.");
+        }
+        if(testCase.equals("Case5")) {
+            Device usbPlayer=bordComputer.getInstanceByName(instanceName);
+            bordComputer.setActiveDevice(usbPlayer);
+            Exception newException = assertThrows(NoItemEvenAllPreconditionAreMet.class, () -> bordComputer.play());
+            assertEquals(NoItemEvenAllPreconditionAreMet.class, newException.getClass());
+            assertEquals(newException.getMessage(), "No Item returned even all preconditions are met.");
+        }
+        if(testCase.equals("Case6")) {
+            Device radioPlayer=bordComputer.getInstanceByName(instanceName);
+            bordComputer.setActiveDevice(radioPlayer);
+            assertDoesNotThrow(() -> bordComputer.play());
+        }
+    }
+
+    static Stream<Arguments> playDate()throws ClassNotFoundException, InvocationTargetException, NoSuchMethodException, InstantiationException, IllegalAccessException {
+        BordComputer bordComputer = new BordComputer();
+        bordComputer.readConfig();
+
+        BordComputer bordComputer2 = new BordComputer();
+        bordComputer2.readConfig();
+
+        return Stream.of(
+                Arguments.of("[CDPlayer-> play(): after all preconditions are met] => ShouldReturnAnItemToPlay","Case1",bordComputer,"CDPlayer"),
+                Arguments.of("[RadioPlayer-> play(): after all preconditions are met] => ShouldReturnAnItemToPlay","Case2",bordComputer,"RadioPlayer"),
+                Arguments.of("[UsbPlayer-> play(): after all preconditions are met] => ShouldReturnAnItemToPlay","Case3",bordComputer,"UsbPlayer"),
+                Arguments.of("[CDPlayer-> play(): without fulfilling preconditions] => ShouldReturnAnException","Case4",bordComputer2,"CDPlayer"),
+                Arguments.of("[UsbPlayer-> play(): without fulfilling preconditions] => ShouldReturnAnException","Case5",bordComputer2,"UsbPlayer"),
+                Arguments.of("[RadioPlayer-> play(): without fulfilling preconditions] => ShouldWorkWell","Case6",bordComputer2,"RadioPlayer")
+        );
+    }
+
+
 }

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

@@ -30,7 +30,8 @@ class CDPlayerTest {
             Exception newException=assertThrows(exception.getClass(),()->_cdPlayer.play());
             assertEquals(expectedResult, newException.getMessage());
         }else{
-            assertThat(_cdPlayer.play()).describedAs(testName).isEqualTo(expectedResult);
+            _cdPlayer.play();
+            assertThat(_cdPlayer.getStatus()).describedAs(testName).isEqualTo(expectedResult);
         }
     }
     static Stream<Arguments> playTestData () {