/*
    * $Id: MVELAttributeEvaluatorTest.java 817009 2009-09-20 11:26:26Z apetrelli $
    *
    * 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.tiles.mvel;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import junit.framework.TestCase;
  
  import org.apache.tiles.Attribute;
  import org.apache.tiles.Expression;
  import org.apache.tiles.TilesApplicationContext;
  import org.apache.tiles.context.TilesRequestContext;
  import org.apache.tiles.context.TilesRequestContextHolder;
  import org.apache.tiles.mvel.MVELAttributeEvaluator;
  import org.apache.tiles.mvel.TilesContextBeanVariableResolverFactory;
  import org.apache.tiles.mvel.TilesContextVariableResolverFactory;
  import org.easymock.EasyMock;
  import org.mvel2.integration.VariableResolverFactory;
  
  /***
   * Tests {@link MVELAttributeEvaluator}.
   *
   * @version $Rev: 817009 $ $Date: 2009-09-20 13:26:26 +0200 (dom, 20 set 2009) $$
   */
  public class MVELAttributeEvaluatorTest extends TestCase {
  
      /***
       * The evaluator to test.
       */
      private MVELAttributeEvaluator evaluator;
  
      /***
       * The request object to use.
       */
      private TilesRequestContext request;
  
      /*** {@inheritDoc} */
      protected void setUp() throws Exception {
          super.setUp();
          TilesRequestContextHolder requestHolder = new TilesRequestContextHolder();
          VariableResolverFactory variableResolverFactory = new TilesContextVariableResolverFactory(
                  requestHolder);
          variableResolverFactory
                  .setNextFactory(new TilesContextBeanVariableResolverFactory(
                          requestHolder));
          evaluator = new MVELAttributeEvaluator(requestHolder,
                  variableResolverFactory);
          Map<String, Object> requestScope = new HashMap<String, Object>();
          Map<String, Object> sessionScope = new HashMap<String, Object>();
          Map<String, Object> applicationScope = new HashMap<String, Object>();
          requestScope.put("object1", "value");
          sessionScope.put("object2", new Integer(1));
          applicationScope.put("object3", new Float(2.0));
          requestScope.put("paulaBean", new PaulaBean());
          request = EasyMock.createMock(TilesRequestContext.class);
          EasyMock.expect(request.getRequestScope()).andReturn(requestScope)
                  .anyTimes();
          EasyMock.expect(request.getSessionScope()).andReturn(sessionScope)
                  .anyTimes();
          TilesApplicationContext applicationContext = EasyMock
                  .createMock(TilesApplicationContext.class);
          EasyMock.expect(request.getApplicationContext()).andReturn(
                  applicationContext).anyTimes();
          EasyMock.expect(applicationContext.getApplicationScope()).andReturn(
                  applicationScope).anyTimes();
          EasyMock.replay(request, applicationContext);
      }
  
      /***
       * Tests
       * {@link MVELAttributeEvaluator#evaluate(Attribute, TilesRequestContext)}.
       */
      public void testEvaluate() {
          Attribute attribute = new Attribute();
          attribute.setExpressionObject(new Expression("requestScope.object1"));
          assertEquals("The value is not correct", "value", evaluator.evaluate(
                  attribute, request));
          attribute.setExpressionObject(new Expression("sessionScope.object2"));
          assertEquals("The value is not correct", new Integer(1), evaluator
                  .evaluate(attribute, request));
         attribute.setExpressionObject(new Expression("applicationScope.object3"));
         assertEquals("The value is not correct", new Float(2.0), evaluator
                 .evaluate(attribute, request));
         attribute.setExpressionObject(new Expression("object1"));
         assertEquals("The value is not correct", "value", evaluator.evaluate(
                 attribute, request));
         attribute.setExpressionObject(new Expression("object2"));
         assertEquals("The value is not correct", new Integer(1), evaluator
                 .evaluate(attribute, request));
         attribute.setExpressionObject(new Expression("object3"));
         assertEquals("The value is not correct", new Float(2.0), evaluator
                 .evaluate(attribute, request));
         attribute.setExpressionObject(new Expression("paulaBean.paula"));
         assertEquals("The value is not correct", "Brillant", evaluator
                 .evaluate(attribute, request));
         attribute.setExpressionObject(new Expression("'String literal'"));
         assertEquals("The value is not correct", "String literal", evaluator
                 .evaluate(attribute, request));
         attribute.setValue(new Integer(2));
         assertEquals("The value is not correct", new Integer(2), evaluator
                 .evaluate(attribute, request));
         attribute.setValue("object1");
         assertEquals("The value has been evaluated", "object1", evaluator
                 .evaluate(attribute, request));
     }
 
     /***
      * Tests {@link MVELAttributeEvaluator#evaluate(String, TilesRequestContext)}.
      */
     public void testEvaluateString() {
         String expression = "requestScope.object1";
         assertEquals("The value is not correct", "value", evaluator.evaluate(
                 expression, request));
         expression = "sessionScope.object2";
         assertEquals("The value is not correct", new Integer(1), evaluator
                 .evaluate(expression, request));
         expression = "applicationScope.object3";
         assertEquals("The value is not correct", new Float(2.0), evaluator
                 .evaluate(expression, request));
         expression = "object1";
         assertEquals("The value is not correct", "value", evaluator.evaluate(
                 expression, request));
         expression = "object2";
         assertEquals("The value is not correct", new Integer(1), evaluator
                 .evaluate(expression, request));
         expression = "object3";
         assertEquals("The value is not correct", new Float(2.0), evaluator
                 .evaluate(expression, request));
         expression = "paulaBean.paula";
         assertEquals("The value is not correct", "Brillant", evaluator
                 .evaluate(expression, request));
         expression = "'String literal'";
         assertEquals("The value is not correct", "String literal", evaluator
                 .evaluate(expression, request));
     }
 
     /***
      * This is The Brillant Paula Bean (sic) just like it was posted to:
      * http://thedailywtf.com/Articles/The_Brillant_Paula_Bean.aspx I hope that
      * there is no copyright on it.
      */
     public static class PaulaBean {
 
         /***
          * Paula is brillant, really.
          */
         private String paula = "Brillant";
 
         /***
          * Returns brillant.
          *
          * @return "Brillant".
          */
         public String getPaula() {
             return paula;
         }
     }
 }