BAEL-4007 Add jpa data equality unit test specs

2020-07-15 20:53:23 -04:00
parent 994e909a18
commit 9e03b89e69
8 changed files with 402 additions and 0 deletions
@@ -0,0 +1,74 @@
+package com.baeldung.jpa.equality;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.Persistence;
+
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class EqualityUnitTest {
+
+    private static EntityManagerFactory factory;
+    private static EntityManager entityManager;
+
+    @BeforeClass
+    public static void setup() {
+        factory = Persistence.createEntityManagerFactory("jpa-h2-equality");
+        entityManager = factory.createEntityManager();
+    }
+
+    @Test
+    public void givenObjectBasedEquality_whenUsingEquals_thenEqualIsBasedOnInstance() throws CloneNotSupportedException {
+        EqualByJavaDefault object1 = new EqualByJavaDefault();
+        EqualByJavaDefault object2 = new EqualByJavaDefault();
+
+        object1.setEmail("test.user@domain.com");
+
+        entityManager.getTransaction().begin();
+        entityManager.persist(object1);
+        entityManager.getTransaction().commit();
+
+        object2 = (EqualByJavaDefault) object1.clone();
+
+        Assert.assertNotEquals(object1, object2);
+        Assert.assertEquals(object1.getId(), object2.getId());
+        Assert.assertEquals(object1.getEmail(), object2.getEmail());
+    }
+
+    @Test
+    public void givenIdBasedEquality_whenUsingEquals_thenEqualIsBasedOnId() {
+        EqualById object1 = new EqualById();
+        EqualById object2 = new EqualById();
+
+        object1.setEmail("test.user.1@domain.com");
+        object2.setEmail("test.user.2@domain.com");
+
+        entityManager.getTransaction().begin();
+        entityManager.persist(object1);
+        entityManager.getTransaction().commit();
+
+        object2.setId(object1.getId());
+
+        Assert.assertEquals(object1, object2);
+        Assert.assertEquals(object1.getId(), object2.getId());
+        Assert.assertNotEquals(object1.getEmail(), object2.getEmail());
+    }
+
+    @Test
+    public void givenBusinessKeyBasedEquality_whenUsingEquals_thenEqualIsBasedOnBusinessKey() {
+        EqualByBusinessKey object1 = new EqualByBusinessKey();
+        EqualByBusinessKey object2 = new EqualByBusinessKey();
+
+        object1.setEmail("test.user@test-domain.com");
+        object2.setEmail("test.user@test-domain.com");
+
+        entityManager.getTransaction().begin();
+        entityManager.persist(object1);
+        entityManager.getTransaction().commit();
+
+        Assert.assertEquals(object1, object2);
+        Assert.assertNotEquals(object1.getId(), object2.getId());
+    }
+}