### Question:
UnitPage extends AbstractWebPage { protected static boolean isNatDetected(final Unit unit) { boolean natdetected = false; String deviceParam = "ManagementServer.ConnectionRequestURL"; String crequrl = unit.getParameterValue("InternetGatewayDevice." + deviceParam, false); if (crequrl == null) { crequrl = unit.getParameterValue("Device." + deviceParam, false); } String publicip = unit.getParameterValue(SystemParameters.IP_ADDRESS, false); if (crequrl != null && publicip != null && !crequrl.contains(publicip)) { natdetected = true; } return natdetected; }  String getTitle(String page); List<MenuItem> getShortcutItems(SessionData sessionData); static void publishInspectionMode(Unit unit, String sessionId); void process(
      ParameterParser params,
      Output outputHandler,
      DataSource xapsDataSource,
      DataSource syslogDataSource);  }### Answer:
@Test public void isNotNatDetectedWhenConnRewUrlContainsPublicUP() { String publicIPAddress = "192.168.0.8"; String connectionRequestUrl = "http: Unit mockUnit = mock(Unit.class); when(mockUnit.getParameterValue(SystemParameters.IP_ADDRESS, false)).thenReturn(publicIPAddress); when(mockUnit.getParameterValue("InternetGatewayDevice.ManagementServer.ConnectionRequestURL", false)).thenReturn(connectionRequestUrl); boolean isNat = UnitPage.isNatDetected(mockUnit); assertFalse(isNat); }
@Test public void isNotNatDetected() { String publicIPAddress = "10.0.2.1"; String connectionRequestUrl = "http: Unit mockUnit = mock(Unit.class); when(mockUnit.getParameterValue(SystemParameters.IP_ADDRESS, false)).thenReturn(publicIPAddress); when(mockUnit.getParameterValue("InternetGatewayDevice.ManagementServer.ConnectionRequestURL", false)).thenReturn(connectionRequestUrl); boolean isNat = UnitPage.isNatDetected(mockUnit); assertTrue(isNat); }