UsbPlayerTest.quieter_10_Test second Case

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

@@ -136,7 +136,32 @@ void louderTest(String testName, UsbPlayer inputPlay, int expectedResult) {
         );
     }
 
+    @ParameterizedTest
+    @MethodSource("louder_10_Options")
+    void louder_10_Test(String testName, UsbPlayer inputPlay, int expectedResult) {
+        int volumeNum = inputPlay.getLautstaerke();
+        assertThat(volumeNum).describedAs(testName).isEqualTo(expectedResult);
+    }
+
+    static Stream<Arguments> louder_10_Options() {
+        UsbPlayer up1 = new UsbPlayer();
+        up1.Louder_10();
+
+        UsbPlayer up2 = new UsbPlayer();
+        for (int i = 0; i <= 3; i++) {
+          up2.Louder_10();
+        }
+        up2.quieter_10();
 
+        UsbPlayer up3 = new UsbPlayer();
+        up3.setLautstaerke(100);
+        up3.Louder_10();
+        return Stream.of(
+                Arguments.of("Volume was 0, should be 10 ", up1, 10),
+                Arguments.of("Volume was 0, should be 30 ", up2, 30),
+                Arguments.of("Volume was 100, should stay 100 ", up3, 100)
+        );
+    }
     @ParameterizedTest
     @MethodSource("quieter_10_Options")
     void quieter_10_Test(String testName, UsbPlayer inputPlay, int expectedResult) {
@@ -149,8 +174,16 @@ void louderTest(String testName, UsbPlayer inputPlay, int expectedResult) {
         up1.setLautstaerke(10);
         up1.quieter_10();
 
+        UsbPlayer up2 = new UsbPlayer();
+        up2.setLautstaerke(50);
+        for (int i = 0; i < 3; i++) {
+            up2.quieter_10();
+        }
+
+
         return Stream.of(
-                Arguments.of("Volume was 10, should be 0 ", up1, 0)
+                Arguments.of("Volume was 10, should be 0 ", up1, 0),
+                Arguments.of("Volume was 50, should be 20 ", up2, 20)
         );
     }