package org.apache.onami.persist;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.
   */
  
  import org.junit.Before;
  import org.junit.Test;
  
  import javax.naming.Context;
  import javax.naming.NamingException;
  import javax.persistence.EntityManagerFactory;
  
  import static org.hamcrest.CoreMatchers.sameInstance;
  import static org.junit.Assert.assertThat;
  import static org.mockito.Mockito.doReturn;
  import static org.mockito.Mockito.doThrow;
  import static org.mockito.Mockito.mock;
  
  /**
   * Test for {@link JndiLookupHelper}.
   */
  public class JndiLookupHelperTest
  {
  
      public static final String JNDI_NAME = "jndiName";
  
      private JndiLookupHelper sut;
  
      @Before
      public void setUp()
          throws Exception
      {
          sut = new JndiLookupHelper();
      }
  
  
      @Test
      public void shouldLookupEmfByJndiName()
          throws Exception
      {
          // given
          final Context context = mock( Context.class );
          final EntityManagerFactory emf = mock( EntityManagerFactory.class );
          doReturn( emf ).when( context ).lookup( JNDI_NAME );
          InitialContextFactoryStub.registerContext( context );
          // when
          final EntityManagerFactory result = sut.doJndiLookup( EntityManagerFactory.class, JNDI_NAME );
          // then
          assertThat( result, sameInstance( emf ) );
      }
  
      @Test( expected = NullPointerException.class )
      public void shouldThrowExceptionIfContextReturnsNull()
          throws Exception
      {
          // given
          final Context context = mock( Context.class );
          doReturn( null ).when( context ).lookup( JNDI_NAME );
          InitialContextFactoryStub.registerContext( context );
          // when
          sut.doJndiLookup( EntityManagerFactory.class, JNDI_NAME );
      }
  
      @Test( expected = RuntimeException.class )
      public void shouldWrapNamingException()
          throws Exception
      {
          // given
          final Context context = mock( Context.class );
          doThrow( new NamingException() ).when( context ).lookup( JNDI_NAME );
          InitialContextFactoryStub.registerContext( context );
          // when
          sut.doJndiLookup( EntityManagerFactory.class, JNDI_NAME );
      }
  
  }