Add oving 7

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

@@ -0,0 +1,29 @@
+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");
+	}
+}