Merge pull request #8012 from fanatixan/bael-3089

BAEL-3089 - created examples for @SecondaryTable article

persistence-modules/java-jpa-2/src/test/java/com/baeldung/jpa/multipletables/MultipleTablesIntegrationTest.java

@@ -0,0 +1,79 @@
+package com.baeldung.jpa.multipletables;
+
+import static org.assertj.core.api.Assertions.*;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.Persistence;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import com.baeldung.jpa.multipletables.multipleentities.MealWithMultipleEntities;
+import com.baeldung.jpa.multipletables.secondarytable.MealAsSingleEntity;
+import com.baeldung.jpa.multipletables.secondarytable.embeddable.MealWithEmbeddedAllergens;
+
+public class MultipleTablesIntegrationTest {
+
+    private static EntityManagerFactory emf;
+    private static EntityManager em;
+
+    @BeforeClass
+    public static void setup() {
+        emf = Persistence.createEntityManagerFactory("jpa-h2-multipltables");
+        em = emf.createEntityManager();
+    }
+
+    @Test
+    public void entityManager_shouldLoadMealAsSingleEntity() {
+        // given
+        
+        // when
+        MealAsSingleEntity meal = em.find(MealAsSingleEntity.class, 1L);
+        
+        // then
+        assertThat(meal).isNotNull();
+        assertThat(meal.getId()).isEqualTo(1L);
+        assertThat(meal.isPeanuts()).isFalse();
+        assertThat(meal.isCelery()).isTrue();
+    }
+
+    @Test
+    public void entityManager_shouldLoadMealWithEmbeddedAllergens() {
+        // given
+        
+        // when
+        MealWithEmbeddedAllergens meal = em.find(MealWithEmbeddedAllergens.class, 1L);
+        
+        // then
+        assertThat(meal).isNotNull();
+        assertThat(meal.getId()).isEqualTo(1L);
+        assertThat(meal.getAllergens()).isNotNull();
+        assertThat(meal.getAllergens().isPeanuts()).isFalse();
+        assertThat(meal.getAllergens().isCelery()).isTrue();
+    }
+
+    @Test
+    public void entityManager_shouldLoadMealWithAllergensEntity() {
+        // given
+        
+        // when
+        MealWithMultipleEntities meal = em.find(MealWithMultipleEntities.class, 1L);
+        
+        // then
+        assertThat(meal).isNotNull();
+        assertThat(meal.getId()).isEqualTo(1L);
+        assertThat(meal.getAllergens()).isNotNull();
+        assertThat(meal.getAllergens().isPeanuts()).isFalse();
+        assertThat(meal.getAllergens().isCelery()).isTrue();
+    }
+
+    @AfterClass
+    public static void teardown() {
+        if (emf != null) {
+            emf.close();
+        }
+    }
+
+}