title: Hibernate, integration test ConstraintViolationException: validation failed for classes
body: <p>I've got problem with my hibernate integration test. All annotations are imported correctly, but even if I remove the annotations test fails with a ConstraintViolationException.</p>
  
  <p>Test looks like this:</p>
  
  <pre><code>@ContextConfiguration("classpath:/META-INF/spring/applicationContext.xml")
  @RunWith(SpringJUnit4ClassRunner.class)
  public class PacientDAOTest {
  
  @PersistenceContext
  private EntityManager entityManager;
  
  @Test
  @Transactional
  public void shouldAddPacient() throws Exception {
      Pacient pacient = new Pacient();
      pacient.setName("x");
      pacient.setSecondName("xx");
      pacient.setLastName("xxx");
      pacient.setBirthDate(new Date(2000, 10, 10));
      pacient.setPesel("1111111111");
      pacient.setSex(Sex.FEMALE);
      pacient.setEmail("aaza@asd.pl");
      pacient.setContactNumber(123456L);
      entityManager.persist(pacient);
      entityManager.flush();
      assertNotNull(pacient.getId());
      }
  }
  </code></pre>
  
  <p>Pacient entity:</p>
  
  <pre><code>@Entity
  public class Pacient {
  
  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  private Long id;
  
  @NotBlank
  private String name;
  
  private String secondName;
  
  @NotBlank
  private String lastName;
  
  private Date birthDate;
  
  @NotBlank
  @Length(max = 11, min = 11)
  private String pesel;
  
  @Enumerated(EnumType.STRING)
  private Sex sex;
  
  @NotBlank
  private String email;
  
  private Long contactNumber;
  ..setters and getters
  }
  </code></pre>
  
  <p>I don't know why hibernate throws this exception:</p>
  
  <pre><code>javax.validation.ConstraintViolationException: validation failed for classes [pl.arprojects.dietetyk.api.domian.Pacient] during persist time for groups [javax.validation.groups.Default, ]
      at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:155)
      at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:94)
      at org.hibernate.action.EntityIdentityInsertAction.preInsert(EntityIdentityInsertAction.java:160)
      at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:65)
      at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
      at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:320)
      at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:203)
      at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:129)
      at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:69)
      at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:179)
      at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:135)
      at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61)
      at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:808)
      at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:782)
      at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:786)
      at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:672)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:606)
      at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240)
      at com.sun.proxy.$Proxy26.persist(Unknown Source)
      at pl.arprojects.dietetyk.api.dao.PacientDAOTest.shouldAddPacient(PacientDAOTest.java:42)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:606)
      at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
      at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
      at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
      at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
      at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
      at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:82)
      at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
      at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
      at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
      at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
      at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
      at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
      at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
      at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
      at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
      at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
      at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
      at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
  </code></pre>