UsbPlayerTest.getItemList First Case

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

@@ -196,7 +196,11 @@ public class UsbPlayer implements Device {
 
     @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

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

@@ -9,6 +9,7 @@ import java.util.ArrayList;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
+
 class UsbPlayerTest {
 
     //UsbPlayer up = new UsbPlayer();
@@ -542,12 +543,11 @@ class UsbPlayerTest {
                 Arguments.of("The Sound is unmuted ", up1,"unmuted","Sound level has changed","previous sound level is 0")
 
         );
-    }//chooseItem
+    }
 
     @ParameterizedTest
     @MethodSource("chooseItem")
     void chooseItemTest(String testName, String inputSong, String expectedResult) {
-        //int volumeNum = inputPlay.getLautstaerke();
         assertThat(inputSong).describedAs(testName).isEqualTo(expectedResult);
     }
 
@@ -560,6 +560,25 @@ class UsbPlayerTest {
                 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();
+
+        assertThat(Pl).contains("Musik 01.mp3","Musik 02.mp3","Musik 03.mp3").describedAs(testName);
+    }
+
+    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"};
+
+        return Stream.of(
+                Arguments.of("An  Album was returned ", up1, Pl,1)
+
+        );
     }
 
 }