Added a unit test

hexagon/src/test/java/com/baeldung/hexagon/HexagonApplicationTests.java

@@ -1,13 +1,55 @@
 package com.baeldung.hexagon;
 
+import com.baeldung.hexagon.core.domain.Burger;
+import com.baeldung.hexagon.port.inbound.BurgerService;
+import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
 @SpringBootTest
 class HexagonApplicationTests {
 
+	@Autowired
+	private BurgerService burgerService;
+
 	@Test
-	void contextLoads() {
+	void testCreate() {
+		Burger burger = new Burger();
+		burger.setName("Chicken Burger");
+		burger.setAddons(new String[]{"tomato", "cheese"});
+		burgerService.createBurger(burger);
+		assertNotNull(burgerService.findByName("Chicken Burger"));
+	}
+
+	@Test
+	void testFindByName() {
+		Burger burger = new Burger();
+		burger.setName("Chicken Burger");
+		burger.setAddons(new String[]{"tomato", "cheese"});
+		burgerService.createBurger(burger);
+		Burger burger1 = burgerService.findByName("Chicken Burger");
+		Assertions.assertEquals("Chicken Burger", burger1.getName());
+	}
+
+	@Test
+	void testFindAll() {
+		Burger burger1 = new Burger();
+		burger1.setName("Chicken Burger");
+		burger1.setAddons(new String[]{"tomato", "cheese"});
+		burgerService.createBurger(burger1);
+
+		Burger burger2 = new Burger();
+		burger2.setName("Veggie Burger");
+		burger2.setAddons(new String[]{"onion", "cheese"});
+		burgerService.createBurger(burger2);
+		List<Burger> burgers = burgerService.findAll();
+
+		Assertions.assertEquals(2, burgers.size());
 	}
 
 }