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   *  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.
   */
  package domainapp.integtests.tests.modules.simple;
  
  import java.sql.SQLIntegrityConstraintViolationException;
  import java.util.List;
  
  import javax.inject.Inject;
  
  import com.google.common.base.Throwables;
  
  import org.hamcrest.Description;
  import org.hamcrest.Matcher;
  import org.hamcrest.TypeSafeMatcher;
  import org.junit.Test;
  
  import org.apache.isis.applib.fixturescripts.FixtureScript;
  import org.apache.isis.applib.fixturescripts.FixtureScripts;
  
  import domainapp.dom.modules.simple.SimpleObject;
  import domainapp.dom.modules.simple.SimpleObjects;
  import domainapp.fixture.modules.simple.SimpleObjectsTearDown;
  import domainapp.fixture.scenarios.RecreateSimpleObjects;
  import domainapp.integtests.tests.SimpleAppIntegTest;
  import static org.assertj.core.api.Assertions.assertThat;
  
  public class SimpleObjectsIntegTest extends SimpleAppIntegTest {
  
      @Inject
      FixtureScripts fixtureScripts;
      @Inject
      SimpleObjects simpleObjects;
  
      public static class ListAll extends SimpleObjectsIntegTest {
  
          @Test
          public void happyCase() throws Exception {
  
              // given
              RecreateSimpleObjects fs = new RecreateSimpleObjects();
              fixtureScripts.runFixtureScript(fs, null);
              nextTransaction();
  
              // when
              final List<SimpleObject> all = wrap(simpleObjects).listAll();
  
              // then
              assertThat(all).hasSize(fs.getSimpleObjects().size());
  
              SimpleObject simpleObject = wrap(all.get(0));
              assertThat(simpleObject.getName()).isEqualTo(fs.getSimpleObjects().get(0).getName());
          }
  
          @Test
          public void whenNone() throws Exception {
  
              // given
              FixtureScript fs = new SimpleObjectsTearDown();
              fixtureScripts.runFixtureScript(fs, null);
              nextTransaction();
  
              // when
              final List<SimpleObject> all = wrap(simpleObjects).listAll();
  
              // then
              assertThat(all).hasSize(0);
          }
      }
  
      public static class Create extends SimpleObjectsIntegTest {
  
          @Test
          public void happyCase() throws Exception {
  
              // given
              FixtureScript fs = new SimpleObjectsTearDown();
              fixtureScripts.runFixtureScript(fs, null);
              nextTransaction();
  
              // when
              wrap(simpleObjects).create("Faz");
  
              // then
              final List<SimpleObject> all = wrap(simpleObjects).listAll();
              assertThat(all).hasSize(1);
          }
  
          @Test
          public void whenAlreadyExists() throws Exception {
  
              // given
              FixtureScript fs = new SimpleObjectsTearDown();
              fixtureScripts.runFixtureScript(fs, null);
              nextTransaction();
              wrap(simpleObjects).create("Faz");
              nextTransaction();
  
              // then
              expectedExceptions.expectCause(causalChainContains(SQLIntegrityConstraintViolationException.class));
  
              // when
              wrap(simpleObjects).create("Faz");
              nextTransaction();
          }
  
          private static Matcher<? extends Throwable> causalChainContains(final Class<?> cls) {
              return new TypeSafeMatcher<Throwable>() {
                  @Override
                  protected boolean matchesSafely(Throwable item) {
                      final List<Throwable> causalChain = Throwables.getCausalChain(item);
                      for (Throwable throwable : causalChain) {
                          if(cls.isAssignableFrom(throwable.getClass())){
                              return true;
                          }
                      }
                      return false;
                  }
  
                  @Override
                  public void describeTo(Description description) {
                      description.appendText("exception with causal chain containing " + cls.getSimpleName());
                  }
              };
          }
      }
  
  }