UsbPlayerTest.findSongTest Third Case

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

@@ -191,7 +191,7 @@ public class UsbPlayer implements Device {
         for (int j = 0; j < getPlaylist().size(); j++) {
 
             song = getPlaylist().get(j);
-            songIndex=song.indexOf(songName);
+            songIndex=song.toLowerCase().indexOf(songName.toLowerCase());
 
             if (songIndex != -1) {
                 index =  j;

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

@@ -206,7 +206,8 @@ void louderTest(String testName, UsbPlayer inputPlay, int expectedResult) {
         UsbPlayer up1 = new UsbPlayer();
         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)
+                Arguments.of("The song is in the Album", up1.findSong("Musik 02"), 1),
+                Arguments.of("Name of the Song is in lower case :", up1.findSong("musik 02"), 1)
 
         );
     }