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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 org.apache.causeway.core.metamodel.examples.facets.jsr303;
  
  import org.jmock.Expectations;
  import org.jmock.Mockery;
  import org.jmock.integration.junit4.JMock;
  import org.jmock.integration.junit4.JUnit4Mockery;
  import org.jmock.lib.legacy.ClassImposteriser;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  import static org.hamcrest.CoreMatchers.is;
  import static org.hamcrest.CoreMatchers.not;
  import static org.hamcrest.CoreMatchers.nullValue;
  import static org.hamcrest.MatcherAssert.assertThat;
  
  import org.apache.causeway.applib.Identifier;
  import org.apache.causeway.core.metamodel.adapter.ObjectAdapter;
  import org.apache.causeway.core.metamodel.examples.facets.jsr303.Jsr303PropertyValidationFacet;
  import org.apache.causeway.core.metamodel.interactions.PropertyModifyContext;
  import org.apache.causeway.core.metamodel.spec.identifier.Identified;
  
  @RunWith(JMock.class)
  public class Jsr303FacetValidatingInteraction {
  
      private final Mockery mockery = new JUnit4Mockery() {
          {
              setImposteriser(ClassImposteriser.INSTANCE);
          }
      };
  
      private Jsr303PropertyValidationFacet facet;
      private Identified mockHolder;
  
      private PropertyModifyContext mockContext;
      private ObjectAdapter mockTargetObjectAdapter;
      private ObjectAdapter mockProposedObjectAdapter;
  
      private DomainObjectWithCustomValidation domainObjectWithCustomValidation;
  
      private DomainObjectWithBuiltInValidation domainObjectWithBuiltInValidation;
      
      @Before
      public void setUp() throws Exception {
          mockHolder = mockery.mock(Identified.class);
          facet = new Jsr303PropertyValidationFacet(mockHolder);
          mockContext = mockery.mock(PropertyModifyContext.class);
          mockTargetObjectAdapter = mockery.mock(ObjectAdapter.class, "target");
          mockProposedObjectAdapter = mockery.mock(ObjectAdapter.class, "proposed");
  
          domainObjectWithBuiltInValidation = new DomainObjectWithBuiltInValidation();
          domainObjectWithCustomValidation = new DomainObjectWithCustomValidation();
  
          mockery.checking(new Expectations() {
              {
              	oneOf(mockHolder).getIdentifier();
                  will(returnValue(Identifier.propertyOrCollectionIdentifier(DomainObjectWithBuiltInValidation.class, "serialNumber")));
  
                  oneOf(mockContext).getTarget();
                  will(returnValue(mockTargetObjectAdapter));
  
                  oneOf(mockContext).getProposed();
                  will(returnValue(mockProposedObjectAdapter));
              }
          });
      }
  
      @After
      public void tearDown() throws Exception {
          mockHolder = null;
          facet = null;
          mockContext = null;
      }
  
      @Test
      public void invalidatesWhenBuiltInConstraintVetoes() {
          mockery.checking(new Expectations() {
              {
              	oneOf(mockTargetObjectAdapter).getObject();
                  will(returnValue(domainObjectWithBuiltInValidation));
  
                  oneOf(mockProposedObjectAdapter).getObject();
                  will(returnValue("NONSENSE"));
              }
          });
  
          final String reason = facet.invalidates(mockContext);
          assertThat(reason, is(not(nullValue())));
          assertThat(reason, is("serialNumber is invalid: must match ....-....-...."));
      }
  
      @Test
      public void validatesWhenBuiltInConstraintIsMet() {
          mockery.checking(new Expectations() {
              {
              	oneOf(mockTargetObjectAdapter).getObject();
                  will(returnValue(domainObjectWithBuiltInValidation));
  
                  oneOf(mockProposedObjectAdapter).getObject();
                  will(returnValue("1234-5678-9012"));
              }
          });
  
          final String reason = facet.invalidates(mockContext);
          assertThat(reason, is(nullValue()));
      }
  
      @Test
      public void invalidatesWhenFailsCustomConstraint() {
          mockery.checking(new Expectations() {
              {
              	oneOf(mockTargetObjectAdapter).getObject();
                  will(returnValue(domainObjectWithCustomValidation));
  
                  oneOf(mockProposedObjectAdapter).getObject();
                  will(returnValue("NONSENSE"));
              }
          });
  
          final String reason = facet.invalidates(mockContext);
          assertThat(reason, is(not(nullValue())));
          assertThat(reason, is("serialNumber is invalid: must match ....-....-...."));
      }
  
      @Test
      public void validatesWhenFailsCustomConstraint() {
          mockery.checking(new Expectations() {
              {
              	oneOf(mockTargetObjectAdapter).getObject();
                  will(returnValue(domainObjectWithCustomValidation));
  
                  oneOf(mockProposedObjectAdapter).getObject();
                  will(returnValue("1234-5678-9012"));
              }
          });
  
          final String reason = facet.invalidates(mockContext);
          assertThat(reason, is(nullValue()));
      }
  
  }
  