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1   /*
2    * $Id: PayloadExpressionEvaluatorTestCase.java 20321 2010-11-24 15:21:24Z dfeist $
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.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  
21  import java.io.ByteArrayInputStream;
22  
23  public class PayloadExpressionEvaluatorTestCase extends AbstractMuleTestCase
24  {
25      public void testSimple() throws Exception
26      {
27          MessagePayloadExpressionEvaluator eval = new MessagePayloadExpressionEvaluator();
28          MuleMessage message = new DefaultMuleMessage("test", muleContext);
29  
30          //no expression
31          Object result = eval.evaluate(null, message);
32          assertNotNull(result);
33          assertEquals("test", result);
34  
35          //no expression
36          result = eval.evaluate(null, null);
37          assertNull(result);
38      }
39  
40      /**
41       * Make sure the evaluator gets registered properly
42       *
43       * @throws Exception if the test fails
44       */
45      public void testSimpleUsingManager() throws Exception
46      {
47          MuleMessage message = new DefaultMuleMessage("test", muleContext);
48  
49          assertFalse(muleContext.getExpressionManager().isValidExpression("${payload:}"));
50          assertTrue(muleContext.getExpressionManager().isValidExpression("#[payload:]"));
51  
52          Object result = muleContext.getExpressionManager().evaluate("#[payload:]", message);
53          assertNotNull(result);
54          assertEquals("test", result);
55  
56          result = muleContext.getExpressionManager().evaluate("#[payload:]", null);
57          assertNull(result);
58      }
59  
60      public void testWithTransform() throws Exception
61      {
62          MessagePayloadExpressionEvaluator eval = new MessagePayloadExpressionEvaluator();
63          MuleMessage message = new DefaultMuleMessage("test", muleContext);
64  
65          //i.e. ${payload:byte[]}
66          Object result = eval.evaluate("byte[]", message);
67          assertNotNull(result);
68          assertTrue(result instanceof byte[]);
69          assertEquals("test", new String((byte[]) result));
70  
71          ByteArrayInputStream bais = new ByteArrayInputStream("test2".getBytes());
72          //i.e. ${payload:java.lang.String}
73          result = eval.evaluate("java.lang.String", new DefaultMuleMessage(bais, muleContext));
74          assertNotNull(result);
75          assertEquals("test2", result);
76      }
77  
78      public void testWithMoreComplexTransform() throws Exception
79      {
80          MessagePayloadExpressionEvaluator eval = new MessagePayloadExpressionEvaluator();
81          MuleMessage message = new DefaultMuleMessage(new FruitBowl(new Apple(), new Banana()), muleContext);
82  
83          //Lets register our transformer so Mule can find it
84          muleContext.getRegistry().registerTransformer(new FruitBowlToFruitBasket());
85  
86          //i.e. ${payload:org.mule.tck.testmodels.fruit.FruitBasket}
87          Object result = eval.evaluate("org.mule.tck.testmodels.fruit.FruitBasket", message);
88          assertNotNull(result);
89          assertTrue(result instanceof FruitBasket);
90          FruitBasket fb = (FruitBasket) result;
91          assertEquals(2, fb.getFruit().size());
92          assertTrue(fb.hasBanana());
93          assertTrue(fb.hasApple());
94      }
95  }