1 | /* |
2 | * Copyright (c) 2001-2009, Jean Tessier |
3 | * All rights reserved. |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
8 | * |
9 | * * Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * |
12 | * * Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * |
16 | * * Neither the name of Jean Tessier nor the names of his contributors |
17 | * may be used to endorse or promote products derived from this software |
18 | * without specific prior written permission. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
21 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR |
24 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
27 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
28 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
29 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
30 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
31 | */ |
32 | |
33 | package com.jeantessier.classreader; |
34 | |
35 | import java.io.*; |
36 | import java.util.*; |
37 | |
38 | import junit.framework.*; |
39 | |
40 | public class TestLocalVariableTypeTableAttribute extends TestCase { |
41 | public static final String TEST_CLASS = "test"; |
42 | public static final String TEST_GENERIC_CLASS_CLASS = "testgenericclass"; |
43 | public static final String TEST_GENERIC_METHODS_CLASS = "testgenericmethods"; |
44 | public static final String TEST_FILENAME = "classes" + File.separator + TEST_CLASS + ".class"; |
45 | public static final String TEST_GENERIC_CLASS_FILENAME = "classes" + File.separator + TEST_GENERIC_CLASS_CLASS + ".class"; |
46 | public static final String TEST_GENERIC_METHODS_FILENAME = "classes" + File.separator + TEST_GENERIC_METHODS_CLASS + ".class"; |
47 | |
48 | private ClassfileLoader loader; |
49 | |
50 | protected void setUp() throws Exception { |
51 | super.setUp(); |
52 | |
53 | loader = new AggregatingClassfileLoader(); |
54 | |
55 | loader.load(Collections.singleton(TEST_FILENAME)); |
56 | loader.load(Collections.singleton(TEST_GENERIC_CLASS_FILENAME)); |
57 | loader.load(Collections.singleton(TEST_GENERIC_METHODS_FILENAME)); |
58 | } |
59 | |
60 | public void testConstructorHasLocalVariableTypeTableAttribute() { |
61 | Classfile genericClass = loader.getClassfile(TEST_GENERIC_CLASS_CLASS); |
62 | Method_info method = genericClass.getMethod(TEST_GENERIC_CLASS_CLASS + "(java.lang.Object)"); |
63 | Code_attribute code = method.getCode(); |
64 | |
65 | LocalVariableTypeTable_attribute localVariableTypeTableAttribute = findLastLocalVariableTypeTableAttribute(code.getAttributes()); |
66 | assertNotNull("LocalVariableTypeTable attribute missing", localVariableTypeTableAttribute); |
67 | } |
68 | |
69 | public void testGenericConstructorHasLocalVariableTypeTableAttribute() { |
70 | Classfile genericClass = loader.getClassfile(TEST_GENERIC_METHODS_CLASS); |
71 | Method_info method = genericClass.getMethod(TEST_GENERIC_METHODS_CLASS + "(java.lang.Object)"); |
72 | Code_attribute code = method.getCode(); |
73 | |
74 | LocalVariableTypeTable_attribute localVariableTypeTableAttribute = findLastLocalVariableTypeTableAttribute(code.getAttributes()); |
75 | assertNotNull("LocalVariableTypeTable attribute missing", localVariableTypeTableAttribute); |
76 | } |
77 | |
78 | public void testNonGenericMethodDoesNotHaveLocalVariableTypeTableAttribute() { |
79 | Classfile nonGenericClass = loader.getClassfile(TEST_CLASS); |
80 | Method_info method = nonGenericClass.getMethod("main(java.lang.String[])"); |
81 | Code_attribute code = method.getCode(); |
82 | |
83 | LocalVariableTypeTable_attribute localVariableTypeTableAttribute = findLastLocalVariableTypeTableAttribute(code.getAttributes()); |
84 | assertNull("LocalVariableTypeTable attribute missing", localVariableTypeTableAttribute); |
85 | } |
86 | |
87 | public void testNonGenericMethodUsingGenericsHasLocalVariableTypeTableAttribute() { |
88 | Classfile genericClass = loader.getClassfile(TEST_GENERIC_METHODS_CLASS); |
89 | Method_info method = genericClass.getMethod("testregularmethod(java.lang.Class)"); |
90 | Code_attribute code = method.getCode(); |
91 | |
92 | LocalVariableTypeTable_attribute localVariableTypeTableAttribute = findLastLocalVariableTypeTableAttribute(code.getAttributes()); |
93 | assertNotNull("LocalVariableTypeTable attribute missing", localVariableTypeTableAttribute); |
94 | } |
95 | |
96 | public void testMethodHasLocalVariableTypeTableAttribute() { |
97 | Classfile genericClass = loader.getClassfile(TEST_GENERIC_CLASS_CLASS); |
98 | Method_info method = genericClass.getMethod("testmethod(java.lang.Object)"); |
99 | Code_attribute code = method.getCode(); |
100 | |
101 | LocalVariableTypeTable_attribute localVariableTypeTableAttribute = findLastLocalVariableTypeTableAttribute(code.getAttributes()); |
102 | assertNotNull("LocalVariableTypeTable attribute missing", localVariableTypeTableAttribute); |
103 | } |
104 | |
105 | public void testGenericMethodHasLocalVariableTypeTableAttribute() { |
106 | Classfile genericClass = loader.getClassfile(TEST_GENERIC_METHODS_CLASS); |
107 | Method_info method = genericClass.getMethod("testmethod(java.lang.Object)"); |
108 | Code_attribute code = method.getCode(); |
109 | |
110 | LocalVariableTypeTable_attribute localVariableTypeTableAttribute = findLastLocalVariableTypeTableAttribute(code.getAttributes()); |
111 | assertNotNull("LocalVariableTypeTable attribute missing", localVariableTypeTableAttribute); |
112 | } |
113 | |
114 | public void testLocalVariableType() { |
115 | Classfile genericClass = loader.getClassfile(TEST_GENERIC_CLASS_CLASS); |
116 | Method_info method = genericClass.getMethod(TEST_GENERIC_CLASS_CLASS + "(java.lang.Object)"); |
117 | Code_attribute code = method.getCode(); |
118 | |
119 | LocalVariableTypeTable_attribute localVariableTypeTableAttribute = findLastLocalVariableTypeTableAttribute(code.getAttributes()); |
120 | assertNotNull("LocalVariableTypeTable attribute missing", localVariableTypeTableAttribute); |
121 | assertEquals("Nb LocalVariableType", 2, localVariableTypeTableAttribute.getLocalVariableTypes().size()); |
122 | |
123 | LocalVariableType localVariableType = localVariableTypeTableAttribute.getLocalVariableTypes().iterator().next(); |
124 | assertEquals("start pc", 0, localVariableType.getStartPC()); |
125 | assertEquals("length", 5, localVariableType.getLength()); |
126 | assertEquals("name", "this", localVariableType.getName()); |
127 | assertEquals("signature", "Ltestgenericclass<TT;>;", localVariableType.getSignature()); |
128 | assertEquals("index", 0, localVariableType.getIndex()); |
129 | } |
130 | |
131 | private LocalVariableTypeTable_attribute findLastLocalVariableTypeTableAttribute(Collection<? extends Attribute_info> attributes) { |
132 | LocalVariableTypeTable_attribute result = null; |
133 | |
134 | for (Attribute_info attribute : attributes) { |
135 | if (attribute instanceof LocalVariableTypeTable_attribute) { |
136 | result = (LocalVariableTypeTable_attribute) attribute; |
137 | } |
138 | } |
139 | |
140 | return result; |
141 | } |
142 | } |