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Java > Open Source Codes > org > codehaus > groovy > syntax > parser > ReturnTypeErrorTest


1 package org.codehaus.groovy.syntax.parser;
2
3 import java.io.ByteArrayInputStream JavaDoc;
4
5 import org.codehaus.groovy.classgen.TestSupport;
6 import org.codehaus.groovy.control.CompilationFailedException;
7
8 /**
9  * Tests that void/value return mismatches can be detected.
10  * @author Steve Goetze
11  */
12 public class ReturnTypeErrorTest extends TestSupport {
13
14     public void testInvalidValueReturnStatement() throws Exception JavaDoc {
15         doCompile(
16                 "class zup {\n"
17                 + " void foo() {\n"
18                 + " return 3;"
19                 + " }\n"
20                 + "}\n");
21     }
22
23     public void testInvalidValueReturnStatement2() throws Exception JavaDoc {
24         doCompile(
25                 "class zup {\n"
26                 + " void foo() {\n"
27                 + " if (true) \n"
28                 + " return \n"
29                 + " else \n"
30                 + " return 'Foo' \n"
31                 + " }\n"
32                 + "}\n");
33     }
34
35     protected void doCompile(String JavaDoc code) throws Exception JavaDoc {
36         try {
37             loader.parseClass(new ByteArrayInputStream JavaDoc(code.getBytes()), getMethodName() + ".groovy");
38         }
39         catch( CompilationFailedException e ) {
40             Exception JavaDoc cause = e.getUnit().getException(0);
41             if( cause instanceof RuntimeParserException ) {
42                 return;
43             }
44             throw e;
45         }
46         fail("Should have caught a RuntimeParserException");
47     }
48
49 }
50
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