BAEL-4723 Defining Indexes in JPA (#10247)

* BAEL-4723 Defining Indexes in JPA * unit -> integration test Co-authored-by: mateusz.szablak <mateusz.szablak@accenture.com>
2020-11-13 19:25:15 +01:00
parent 7881b8e9c2
commit 9bce552d6d
4 changed files with 136 additions and 1 deletions
@@ -0,0 +1,50 @@
+package com.baeldung.jpa.index;
+
+import org.hibernate.exception.ConstraintViolationException;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.Persistence;
+import java.util.Optional;
+
+public class IndexIntegrationTest {
+    private static EntityManagerFactory factory;
+    private static EntityManager entityManager;
+
+    @BeforeClass
+    public static void setup() {
+        factory = Persistence.createEntityManagerFactory("jpa-index");
+        entityManager = factory.createEntityManager();
+    }
+
+    @Test
+    public void givenStudent_whenPersistStudentWithSameFirstName_thenConstraintViolationException() {
+        Student student = new Student();
+        student.setFirstName("FirstName");
+        student.setLastName("LastName");
+
+        Student student2 = new Student();
+        student2.setFirstName("FirstName");
+        student2.setLastName("LastName2");
+
+        entityManager.getTransaction().begin();
+        entityManager.persist(student);
+        entityManager.getTransaction().commit();
+
+        Assert.assertEquals(1L, (long) student.getId());
+
+        entityManager.getTransaction().begin();
+        try {
+            entityManager.persist(student2);
+            entityManager.getTransaction().commit();
+            Assert.fail("Should raise an exception - unique key violation");
+        } catch (Exception ex) {
+            Assert.assertTrue(Optional.of(ex).map(Throwable::getCause).map(Throwable::getCause).filter(x -> x instanceof ConstraintViolationException).isPresent());
+        } finally {
+            entityManager.getTransaction().rollback();
+        }
+    }
+}