проверить уникальность с JUnit 4

Question

Как я могу подтвердить с Junit, что поле уникально?

У меня есть это ограничение в моей БД:

CREATE TABLE IF NOT EXISTS `user` (
    `_id` varchar(17) COLLATE utf8_unicode_ci NOT NULL, 
    `login` varchar(128) COLLATE utf8_unicode_ci NOT NULL UNIQUE, 
    `password` varchar(128) COLLATE utf8_unicode_ci NOT NULL, 
    PRIMARY KEY (`_id`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci; 

Войти в этом случае является уникальным.

В моей модели:

@Entity 
@Table(name = "user", uniqueConstraints = { 
     @UniqueConstraint(columnNames = "login") }) 
public class Usuario implements Serializable { 
... 
} 

И мой тест:

@RunWith(SpringJUnit4ClassRunner.class) 
@ContextConfiguration(locations = { "file:src/main/webapp/WEB-INF/applicationContext.xml", "classpath:test-applicationContext.xml" }) 
@TransactionConfiguration(transactionManager="transactionManager",defaultRollback=true) 
public class UserTest extends AbstractTransactionalJUnit4SpringContextTests { 

    @Autowired 
    UserDAO userDAO; 

    private final static Logger logger = Logger.getLogger(UserTest.class); 

    @Test(expected = org.springframework.dao.DataIntegrityViolationException.class) 
    public void unicidadCampoLogin() { 

     User user1= new User("login", "1234"); 
     User user2= new User("login", "1234"); 

     userDAO.insert(user1); 
     userDAO.insert(user2); 

    } 
} 

Его очень простой тест, но не работает.

Если я ставлю rollback = true, я понял, что исключение не выбрасывается. Если я PUR откат = False, я получаю эту трассировку стека:

WARN : org.hibernate.engine.jdbc.spi.SqlExceptionHelper - SQL Error: 1062, SQLState: 23000 
ERROR: org.hibernate.engine.jdbc.spi.SqlExceptionHelper - Duplicate entry 'login' for key 'login' 
WARN : org.springframework.test.context.TestContextManager - Caught exception while allowing TestExecutionListener [org.springframework.test.context.transaction.TransactionalTestExecutionListener@4f9b02ed] to process 'after' execution for test: method [public void com.yavale.baseProject.test.UsuarioTest.unicidadCampoLogin()], instance [com.yavale.baseProject.test.UsuarioTest@49dd3e6f], exception [java.lang.AssertionError: Expected exception: org.springframework.dao.DataIntegrityViolationException] 
org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [null]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement 
    at org.springframework.orm.hibernate4.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:138) 
    at org.springframework.orm.hibernate4.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:680) 
    at org.springframework.orm.hibernate4.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:562) 
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:755) 
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:724) 
    at org.springframework.test.context.transaction.TransactionalTestExecutionListener$TransactionContext.endTransaction(TransactionalTestExecutionListener.java:591) 
    at org.springframework.test.context.transaction.TransactionalTestExecutionListener.endTransaction(TransactionalTestExecutionListener.java:297) 
    at org.springframework.test.context.transaction.TransactionalTestExecutionListener.afterTestMethod(TransactionalTestExecutionListener.java:192) 
    at org.springframework.test.context.TestContextManager.afterTestMethod(TestContextManager.java:395) 
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:91) 
    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.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88) 
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) 
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60) 
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229) 
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50) 
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222) 
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) 
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71) 
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300) 
    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) 
Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement 
    at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:74) 
    at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) 
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125) 
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110) 
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:136) 
    at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:58) 
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3067) 
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3509) 
    at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:88) 
    at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:377) 
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:369) 
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:286) 
    at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:339) 
    at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52) 
    at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1234) 
    at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:404) 
    at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101) 
    at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:175) 
    at org.springframework.orm.hibernate4.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:554) 
    ... 25 more 
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry 'login' for key 'login' 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) 
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:525) 
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) 
    at com.mysql.jdbc.Util.getInstance(Util.java:386) 
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1041) 
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4187) 
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4119) 
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2570) 
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2731) 
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815) 
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155) 
    at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2458) 
    at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2375) 
    at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2359) 
    at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105) 
    at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105) 
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:133) 

Как я должен это сделать ?.

Answer 1

Добавить entityManager.flush() после второй вставки (или SessionFactory.flush() в зависимости от ORM вы используете.)

@RunWith(SpringJUnit4ClassRunner.class) 
@ContextConfiguration(locations = { "file:src/main/webapp/WEB-INF/applicationContext.xml", "classpath:test-applicationContext.xml" }) 
@TransactionConfiguration(transactionManager="transactionManager",defaultRollback=true) 
public class UserTest extends AbstractTransactionalJUnit4SpringContextTests { 

    @Autowired 
    UserDAO userDAO; 

    @PersistenceContext 
    EntityManager entityManager; 

    private final static Logger logger = Logger.getLogger(UserTest.class); 

    @Test(expected = org.springframework.dao.DataIntegrityViolationException.class) 
    public void unicidadCampoLogin() { 

     String login = "sameLogin"; 
     String id1 = "1234"; 
     String id2 = "12345"; 
     User user1= new User(login, id1); 
     User user2= new User(login, id2); 

     userDAO.insert(user1); 
     userDAO.insert(user2); 

     entityManager.flush(); 
    } 
}