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Java example source code file (ManualLocalTransactionsConfidenceTest.java)

This example Java source code file (ManualLocalTransactionsConfidenceTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

behavior, entitymanager, exception, expected, inject, injector, jpaparenttestentity, jpatestentity, manuallocaltransactionsconfidencetest, normal, override, runtimeexception, testcase, transactionalobject, util

The ManualLocalTransactionsConfidenceTest.java Java example source code

/**
 * Copyright (C) 2010 Google, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.inject.persist.jpa;

import com.google.inject.Guice;
import com.google.inject.Inject;
import com.google.inject.Injector;
import com.google.inject.persist.PersistService;
import com.google.inject.persist.Transactional;

import junit.framework.TestCase;

import java.util.Date;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceException;

/**
 * @author Dhanji R. Prasanna (dhanji@gmail.com)
 */

public class ManualLocalTransactionsConfidenceTest extends TestCase {
  private Injector injector;
  private static final String UNIQUE_TEXT_3 =
      ManualLocalTransactionsConfidenceTest.class.getSimpleName()
          + "CONSTRAINT_VIOLATING some other unique text" + new Date();

  @Override
  public void setUp() {
    injector = Guice.createInjector(new JpaPersistModule("testUnit"));

    //startup persistence
    injector.getInstance(PersistService.class).start();
  }

  @Override
  public final void tearDown() {
    injector.getInstance(PersistService.class).stop();
  }

  public void testThrowingCleanupInterceptorConfidence() {
    Exception e = null;
    try {
      System.out.println(
          "\n\n******************************* EXPECTED EXCEPTION NORMAL TEST BEHAVIOR **********");
      injector.getInstance(TransactionalObject.class).runOperationInTxn();
      fail();
    } catch (RuntimeException re) {
      e = re;
      System.out.println(
          "\n\n******************************* EXPECTED EXCEPTION NORMAL TEST BEHAVIOR **********");
      re.printStackTrace(System.out);
      System.out.println(
          "\n\n**********************************************************************************");
    }

    assertNotNull("No exception was thrown!", e);
    assertTrue("Exception thrown was not what was expected (i.e. commit-time)",
        e instanceof PersistenceException);
  }

  public static class TransactionalObject {
    @Inject EntityManager em;

    @Transactional
    public void runOperationInTxn() {
      JpaParentTestEntity entity = new JpaParentTestEntity();
      JpaTestEntity child = new JpaTestEntity();

      child.setText(UNIQUE_TEXT_3);
      em.persist(child);

      entity.getChildren().add(child);
      em.persist(entity);

      entity = new JpaParentTestEntity();
      entity.getChildren().add(child);
      em.persist(entity);
    }
  }
}

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