Add oving 7

src/test/java/oving7/train/CargoCarTest.java

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+package oving7.train;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+public class CargoCarTest {
+
+	private CargoCar cargoCar;
+
+	@BeforeEach
+	public void setUp() {
+		cargoCar = new CargoCar(3000, 2000);
+	}
+
+	@Test
+	@DisplayName("Check total weight")
+	public void testWeight() {
+		assertEquals(5000, cargoCar.getTotalWeight(), "Test total weight after initialization");
+
+		cargoCar.setCargoWeight(4000);
+		assertEquals(7000, cargoCar.getTotalWeight(),
+				"Test total weight after changing cargo weight");
+		assertEquals(4000, cargoCar.getCargoWeight(),
+				"Test cargo weight after changing the weight");
+	}
+}

src/test/java/oving7/train/PassengerCarTest.java

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+package oving7.train;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+public class PassengerCarTest {
+
+	private PassengerCar passengerCar;
+
+	@BeforeEach
+	public void setUp() {
+		passengerCar = new PassengerCar(3000, 200);
+	}
+
+	@Test
+	@DisplayName("Check total weight")
+	public void testWeight() {
+		assertEquals(3000 + (200 * 80), passengerCar.getTotalWeight(),
+				"Test total weight after initialization");
+
+		passengerCar.setPassengerCount(100);
+		assertEquals(3000 + (100 * 80), passengerCar.getTotalWeight(),
+				"Test total weight after changing the number of passengers");
+		assertEquals(100, passengerCar.getPassengerCount(),
+				"Test passenger count after changing the number");
+	}
+}

src/test/java/oving7/train/TrainCarTest.java

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+package oving7.train;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+public class TrainCarTest {
+
+	private TrainCar trainCar;
+
+	@BeforeEach
+	public void setUp() {
+		trainCar = new TrainCar(3000);
+	}
+
+	@Test
+	@DisplayName("Dead weight equals total weight")
+	public void testDeadWeight() {
+		assertEquals(3000, trainCar.getTotalWeight(), "Test initialization of dead weight");
+
+		trainCar.setDeadWeight(5000);
+		assertEquals(5000, trainCar.getTotalWeight(),
+				"Test that total weight equals set dead weight");
+	}
+}

src/test/java/oving7/train/TrainTest.java

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+package oving7.train;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+public class TrainTest {
+
+	private CargoCar cc1;
+	private CargoCar cc2;
+	private PassengerCar pc1;
+	private PassengerCar pc2;
+	private Train train;
+
+	@BeforeEach
+	public void setUp() {
+		train = new Train();
+		pc1 = new PassengerCar(2000, 200);
+		pc2 = new PassengerCar(1500, 100);
+		cc1 = new CargoCar(3000, 5000);
+		cc2 = new CargoCar(2500, 7000);
+	}
+
+	@Test
+	@DisplayName("Add cars to train")
+	public void testAddCarToTrain() {
+		train.addTrainCar(pc1);
+		train.addTrainCar(pc2);
+		train.addTrainCar(cc1);
+		assertTrue(train.contains(pc1),
+				"Test if the train contains passenger car 1 after it has been added");
+		assertTrue(train.contains(pc2),
+				"Test if the train contains passenger car 2 after it has been added");
+		assertTrue(train.contains(cc1),
+				"Test if the train contains cargo car 1 after it has been added");
+		assertFalse(train.contains(cc2),
+				"Test if the train contains cargo car 2 without it being added");
+
+		assertThrows(IllegalArgumentException.class, () -> {
+			train.addTrainCar(null);
+		}, "Test if an IllegalArgumentException is thrown when adding a null car");
+	}
+
+	@Test
+	@DisplayName("Check total weight of the train")
+	public void testTotalTrainWeight() {
+		train.addTrainCar(pc1);
+		train.addTrainCar(cc1);
+		assertEquals(8000 + (2000 + (200 * 80)), train.getTotalWeight(),
+				"Test the train's total weight after adding a passenger car and a cargo car");
+
+		train.addTrainCar(pc2);
+		assertEquals(8000 + (2000 + (200 * 80)) + (1500 + (100 * 80)), train.getTotalWeight(),
+				"Test the train's total weight after adding another passenger car");
+	}
+
+	@Test
+	@DisplayName("Check passenger count on the train")
+	public void testPassengerCount() {
+		train.addTrainCar(pc1);
+		train.addTrainCar(pc2);
+		assertEquals(300, train.getPassengerCount(),
+				"Test passenger count after adding passenger cars");
+
+		train.addTrainCar(cc1);
+		assertEquals(300, train.getPassengerCount(),
+				"Test passenger count after adding a cargo car");
+	}
+
+	@Test
+	@DisplayName("Check cargo weight on the train")
+	public void testCargoWeight() {
+		train.addTrainCar(cc1);
+		train.addTrainCar(cc2);
+		assertEquals(12_000, train.getCargoWeight(), "Test cargo weight after adding cargo cars");
+
+		train.addTrainCar(pc1);
+		assertEquals(12_000, train.getCargoWeight(),
+				"Test cargo weight after adding a passenger car");
+	}
+}