Add oving 7

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

@@ -0,0 +1,28 @@
+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");
+	}
+}