@Test
 public void testSetGetCost() {
   assertEquals(equipment.getCost(), COST, 0.0);
   Double newCost = 1900.0;
   equipment.setCost(newCost);
   assertEquals(equipment.getCost(), newCost, 80000.0);
 }
 @Test
 public void testSetGetBattery() {
   assertEquals(battery, equipment.getBattery());
   Battery bat = new Battery();
   equipment.setBattery(bat);
   assertEquals(bat, equipment.getBattery());
 }
 @Test
 public void testSetGetPanels() {
   assertEquals(equipment.getPanels(), panels);
   ArrayList<Panel> newPanels = new ArrayList<Panel>();
   equipment.setPanels(newPanels);
   assertEquals(equipment.getPanels(), newPanels);
 }
 @Test
 public void testSetGetInverter() {
   assertEquals(equipment.getInverter(), inverter);
   Inverter newInverter = new Inverter();
   equipment.setInverter(newInverter);
   assertEquals(equipment.getInverter(), newInverter);
 }
 @Test
 public void testSetGetInverters() {
   assertEquals(equipment.getInverters(), inverters);
   ArrayList<Inverter> newInverters = new ArrayList<Inverter>();
   equipment.setInverters(newInverters);
   assertEquals(equipment.getPanels(), newInverters);
 }
 @Test
 public void testSizeOf0() {
   assertEquals(equipment.getSize(), SIZE, 0.0);
   Double newSize = 0.0;
   equipment.setSize(newSize);
   assertEquals(equipment.getSize(), newSize, 0.0);
 }
 @Before
 public void setUp() throws Exception {
   equipment = new Equipment();
   equipment.setCost(COST);
   equipment.setSize(SIZE);
   inverter = new Inverter();
   equipment.setInverter(inverter);
   panels = new ArrayList<Panel>();
   equipment.setPanels(panels);
   battery = new Battery();
   equipment.setBattery(battery);
   inverters = new ArrayList<Inverter>();
 }
 @Test
 public void testSetGetTotalPanels() {
   int newSelectedNoOfPanel = 0;
   assertEquals(equipment.getTotalPanels(), newSelectedNoOfPanel);
 }
 @Test
 public void testSetGetKitName() {
   equipment.setKitName("4KWh - 8 500W");
   assertEquals("4KWh - 8 500W", equipment.getKitName());
 }
 @Test
 public void testHighSize() {
   Double newSize = 999.999;
   equipment.setSize(newSize);
   assertEquals(equipment.getSize(), newSize, 0.0);
 }
 @Test
 public void testCostOf0() {
   Double newCost = 0.0;
   equipment.setCost(newCost);
   assertEquals(equipment.getCost(), newCost, 80000.0);
 }
 @Test
 public void testHighCost() {
   Double newCost = 9999.9999;
   equipment.setCost(newCost);
   assertEquals(equipment.getCost(), newCost, 80000.0);
 }