UsbPlayerTest.muteTest Second Case

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

@@ -12,6 +12,8 @@ public class UsbPlayer implements Device {
     private Boolean isConnected;
     private Boolean isDefect;
     int Lautstaerke = 0;
+    int soundWas ;
+
     public USB_Stick USBDrive = new USB_Stick();
 
     public ArrayList<String> getPlaylist() {
@@ -134,7 +136,7 @@ public class UsbPlayer implements Device {
 
     @Override
     public int getVolume() {
-        return 0;
+        return Lautstaerke;
     }
 
     @Override
@@ -182,7 +184,9 @@ public class UsbPlayer implements Device {
 
     @Override
     public String mute() {
-        return null;
+
+        setLautstaerke(0);
+        return "muted";
     }
 
     @Override

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

@@ -429,6 +429,31 @@ class UsbPlayerTest {
                 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 isMuted = inputUSB.mute();
+        assertThat(isMuted).describedAs(testName).isEqualTo(expectedResult);
+        //Second case
+        assertThat(inputUSB.getLautstaerke()).describedAs(testName2).isEqualTo(0);
+
+    }
+
+    static Stream<Arguments> muteOptions() {
+        USB_Stick USBDrive = new USB_Stick();
+
+        //first case
+        UsbPlayer up1 = new UsbPlayer(USBDrive);
+        up1.mute();
+
+
+        return Stream.of(
+                Arguments.of("The Sound is muted ", up1,"muted","Sound level is 0")
+
+        );
     }
 
 }