added new test case for play() & changed play() to show if playedStation is in regional or saved playlist

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

@@ -198,7 +198,7 @@ class RadioPlayerTest {
     @MethodSource("saveStationOptions")
     void testSaveStation(String testName, RadioPlayer testRp,String testTyp, String expectedResult) {
         String savedStation;
-        if (testTyp == "normal") {
+        if (testTyp.equals("normal")) {
         savedStation = testRp.savedPlaylist.get(testRp.savedPlaylist.size() - 1);}
         else savedStation = Boolean.toString(testRp.regionPlaylist.isEmpty());
         assertThat(savedStation).describedAs(testName).isEqualTo(expectedResult);