/*
    * 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.myfaces.context.servlet;
  
  import org.apache.myfaces.test.base.junit4.AbstractJsfTestCase;
  import org.junit.After;
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  import java.io.IOException;
  import java.io.StringWriter;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  import javax.faces.component.UIViewRoot;
  import javax.faces.context.FacesContext;
  
  import org.apache.myfaces.view.facelets.FaceletTestCase;
  import org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage;
  
  /**
   * Test cases for ServletExternalContextImpl.
   * 
   * @author Bill Lucy (latest modification by $Author$)
   * @version $Revision$ $Date$
   */
  @RunWith(JUnit4.class)
  public class FacesContextImplBaseTest extends FaceletTestCase {
  
      @Before
      @Override
      public void setUp() throws Exception {
          super.setUp();
      }
  
      @After
      @Override
      public void tearDown() throws Exception {
          super.tearDown();
      }
  
      /**
       * Verify that the Map returned by UIViewRoot.getViewMap() is cleared when a new view root is set,
       * as required in 4.1.19.2
       */
      @Test
      public void testViewMapCleared() throws Exception
      {
          // don't use MockFacesServletContext here
          FacesContextImpl fci = new  FacesContextImpl(facesContext.getExternalContext(), null, null);
          UIViewRoot firstRoot = new UIViewRoot();
          UIViewRoot secondRoot = new UIViewRoot();
          fci.setViewRoot(firstRoot);
          Map<String, Object> viewMap = firstRoot.getViewMap();
          viewMap.put("entry", Boolean.TRUE);
  
          // set a new view root, which will cause the old view root's ViewMap to be cleared if BUILDING_VIEW_METADATA is not set
          fci.setViewRoot(secondRoot);
          Assert.assertEquals("The ViewMap was not cleared as expected", 0, viewMap.size());
      }
  
      /**
       * Make sure the Map returned by UIViewRoot.getViewMap() is NOT cleared when a new view root is set while the 
       * BUILDING_VIEW_METADATA attribute is set.  See MYFACES-4282.
       */
      @Test
      public void testViewMapNotClearedWhileBuildingViewMetadata() throws Exception
      {
          FacesContextImpl fci = new  FacesContextImpl(facesContext.getExternalContext(), null, null);
          UIViewRoot firstRoot = new UIViewRoot();
          UIViewRoot secondRoot = new UIViewRoot();
          fci.getAttributes().put(FaceletViewDeclarationLanguage.BUILDING_VIEW_METADATA, Boolean.TRUE);
          fci.setViewRoot(firstRoot);
          Map<String, Object> viewMap = firstRoot.getViewMap();
          viewMap.put("entry", Boolean.TRUE);
 
         // set a new view root - the old view root's ViewMap should NOT be cleared
         fci.setViewRoot(secondRoot);
         Assert.assertEquals("The ViewMap was incorrectly cleared while the BUILDING_VIEW_METADATA attribute was set", 1, viewMap.size());
     }
 }