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1   /*
2    * $Id: PayloadExpressionEvaluatorTestCase.java 22377 2011-07-11 12:41:42Z dirk.olmes $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
5    *
6    * The software in this package is published under the terms of the CPAL v1.0
7    * license, a copy of which has been included with this distribution in the
8    * LICENSE.txt file.
9    */
10  package org.mule.expression;
11  
12  import org.mule.DefaultMuleMessage;
13  import org.mule.api.MuleMessage;
14  import org.mule.tck.junit4.AbstractMuleContextTestCase;
15  import org.mule.tck.testmodels.fruit.Apple;
16  import org.mule.tck.testmodels.fruit.Banana;
17  import org.mule.tck.testmodels.fruit.FruitBasket;
18  import org.mule.tck.testmodels.fruit.FruitBowl;
19  import org.mule.tck.testmodels.fruit.FruitBowlToFruitBasket;
20  
21  import java.io.ByteArrayInputStream;
22  
23  import org.junit.Test;
24  
25  import static org.junit.Assert.assertEquals;
26  import static org.junit.Assert.assertFalse;
27  import static org.junit.Assert.assertNotNull;
28  import static org.junit.Assert.assertNull;
29  import static org.junit.Assert.assertTrue;
30  
31  public class PayloadExpressionEvaluatorTestCase extends AbstractMuleContextTestCase
32  {
33      @Test
34      public void testSimple() throws Exception
35      {
36          MessagePayloadExpressionEvaluator eval = new MessagePayloadExpressionEvaluator();
37          MuleMessage message = new DefaultMuleMessage("test", muleContext);
38  
39          //no expression
40          Object result = eval.evaluate(null, message);
41          assertNotNull(result);
42          assertEquals("test", result);
43  
44          //no expression
45          result = eval.evaluate(null, null);
46          assertNull(result);
47      }
48  
49      /**
50       * Make sure the evaluator gets registered properly
51       *
52       * @throws Exception if the test fails
53       */
54      @Test
55      public void testSimpleUsingManager() throws Exception
56      {
57          MuleMessage message = new DefaultMuleMessage("test", muleContext);
58  
59          assertFalse(muleContext.getExpressionManager().isValidExpression("${payload:}"));
60          assertTrue(muleContext.getExpressionManager().isValidExpression("#[payload:]"));
61  
62          Object result = muleContext.getExpressionManager().evaluate("#[payload:]", message);
63          assertNotNull(result);
64          assertEquals("test", result);
65  
66          result = muleContext.getExpressionManager().evaluate("#[payload:]", null);
67          assertNull(result);
68      }
69  
70      @Test
71      public void testWithTransform() throws Exception
72      {
73          MessagePayloadExpressionEvaluator eval = new MessagePayloadExpressionEvaluator();
74          MuleMessage message = new DefaultMuleMessage("test", muleContext);
75  
76          //i.e. ${payload:byte[]}
77          Object result = eval.evaluate("byte[]", message);
78          assertNotNull(result);
79          assertTrue(result instanceof byte[]);
80          assertEquals("test", new String((byte[]) result));
81  
82          ByteArrayInputStream bais = new ByteArrayInputStream("test2".getBytes());
83          //i.e. ${payload:java.lang.String}
84          result = eval.evaluate("java.lang.String", new DefaultMuleMessage(bais, muleContext));
85          assertNotNull(result);
86          assertEquals("test2", result);
87      }
88  
89      @Test
90      public void testWithMoreComplexTransform() throws Exception
91      {
92          MessagePayloadExpressionEvaluator eval = new MessagePayloadExpressionEvaluator();
93          MuleMessage message = new DefaultMuleMessage(new FruitBowl(new Apple(), new Banana()), muleContext);
94  
95          //Lets register our transformer so Mule can find it
96          muleContext.getRegistry().registerTransformer(new FruitBowlToFruitBasket());
97  
98          //i.e. ${payload:org.mule.tck.testmodels.fruit.FruitBasket}
99          Object result = eval.evaluate("org.mule.tck.testmodels.fruit.FruitBasket", message);
100         assertNotNull(result);
101         assertTrue(result instanceof FruitBasket);
102         FruitBasket fb = (FruitBasket) result;
103         assertEquals(2, fb.getFruit().size());
104         assertTrue(fb.hasBanana());
105         assertTrue(fb.hasApple());
106     }
107 }