1   /*
2    * $Id: PayloadExpressionEvaluatorTestCase.java 11290 2008-03-09 12:01:48Z rossmason $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSource, Inc.  All rights reserved.  http://www.mulesource.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.AbstractMuleTestCase;
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  import org.mule.util.expression.ExpressionEvaluatorManager;
21  import org.mule.util.expression.MessagePayloadExpressionEvaluator;
22  
23  import java.io.ByteArrayInputStream;
24  import java.util.ArrayList;
25  import java.util.List;
26  
27  public class PayloadExpressionEvaluatorTestCase extends AbstractMuleTestCase
28  {
29      public void testSimple() throws Exception
30      {
31          MessagePayloadExpressionEvaluator eval = new MessagePayloadExpressionEvaluator();
32          MuleMessage message = new DefaultMuleMessage("test");
33  
34          //no expression
35          Object result = eval.evaluate(null, message);
36          assertNotNull(result);
37          assertEquals("test", result);
38  
39          //no expression
40          result = eval.evaluate(null, new ArrayList(1));
41          assertNotNull(result);
42          assertTrue(result instanceof List);
43  
44          result = eval.evaluate(null, null);
45          assertNull(result);
46      }
47  
48      /**
49       * Make sure the evaluator gets registered properly
50       * @throws Exception if the test fails
51       */
52      public void testSimpleUsingManager() throws Exception
53      {
54          MuleMessage message = new DefaultMuleMessage("test");
55  
56          Object result = ExpressionEvaluatorManager.evaluate("${payload}", message);
57          assertNotNull(result);
58          assertEquals("test", result);
59  
60          result = ExpressionEvaluatorManager.evaluate("${payload}", new ArrayList(1));
61          assertNotNull(result);
62          assertTrue(result instanceof List);
63  
64          result = ExpressionEvaluatorManager.evaluate("${payload}", null);
65          assertNull(result);
66      }
67  
68      public void testWithTransform() throws Exception
69      {
70          MessagePayloadExpressionEvaluator eval = new MessagePayloadExpressionEvaluator();
71          MuleMessage message = new DefaultMuleMessage("test");
72  
73          //i.e. ${payload:byte[]}
74          Object result = eval.evaluate("byte[]", message);
75          assertNotNull(result);
76          assertTrue(result instanceof byte[]);
77          assertEquals("test", new String((byte[])result));
78  
79          ByteArrayInputStream bais = new ByteArrayInputStream("test2".getBytes());
80          //i.e. ${payload:java.lang.String}
81          result = eval.evaluate("java.lang.String", new DefaultMuleMessage(bais));
82          assertNotNull(result);
83          assertEquals("test2", result);
84      }
85  
86      public void testWithMoreComplexTransform() throws Exception
87      {
88          MessagePayloadExpressionEvaluator eval = new MessagePayloadExpressionEvaluator();
89          MuleMessage message = new DefaultMuleMessage(new FruitBowl(new Apple(), new Banana()));
90  
91          //Lets register our transformer so Mule can find it
92          muleContext.getRegistry().registerTransformer(new FruitBowlToFruitBasket());
93  
94          //i.e. ${payload:org.mule.tck.testmodels.fruit.FruitBasket}
95          Object result = eval.evaluate("org.mule.tck.testmodels.fruit.FruitBasket", message);
96          assertNotNull(result);
97          assertTrue(result instanceof FruitBasket);
98          FruitBasket fb = (FruitBasket)result;
99          assertEquals(2, fb.getFruit().size());
100         assertTrue(fb.hasBanana());
101         assertTrue(fb.hasApple());
102     }
103 }