added second test case for getItemList() & and added productive code for RadioPlayer

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

@@ -185,6 +185,9 @@ public class RadioPlayer implements Device {
 
     @Override
     public String[] getItemList() {
+        if (regionPlaylist.contains(playedStation))
+            return regionPlaylist.toArray(new String[0]);
+        else
             return savedPlaylist.toArray(new String[0]);
     }
 

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

@@ -320,18 +320,26 @@ class RadioPlayerTest {
                 Arguments.of("Test for change order in saved playlist with nr is than smaller than 0 at front of playlist", rp2, 0, "Teddy")
         );
     }
+
     @ParameterizedTest
     @MethodSource("getItemListOptions")
-    void testGetItemList(String testName, RadioPlayer testRp, String[] expectedResult) {
+    void testGetItemList(String testName, RadioPlayer testRp, String testTyp, String[] expectedResult) {
+        if (testTyp.equals("region")) {
+            testRp.changeRegion("BY");
+        }
+
         String[] playList = testRp.getItemList();
         assertThat(playList).describedAs(testName).isEqualTo(expectedResult);
     }
 
     static Stream<Arguments> getItemListOptions() {
         RadioPlayer rp = new RadioPlayer();
+        RadioPlayer rp1 = new RadioPlayer();
+        rp1.changeRegion("BY");
 
         return Stream.of(
-                Arguments.of("Test for return saved playlist", rp, rp.savedPlaylist.toArray(new String[0]))
+                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]))
         );
     }
 }