01: /***
02: * ASM tests
03: * Copyright (c) 2002-2005 France Telecom
04: * All rights reserved.
05: *
06: * Redistribution and use in source and binary forms, with or without
07: * modification, are permitted provided that the following conditions
08: * are met:
09: * 1. Redistributions of source code must retain the above copyright
10: * notice, this list of conditions and the following disclaimer.
11: * 2. Redistributions in binary form must reproduce the above copyright
12: * notice, this list of conditions and the following disclaimer in the
13: * documentation and/or other materials provided with the distribution.
14: * 3. Neither the name of the copyright holders nor the names of its
15: * contributors may be used to endorse or promote products derived from
16: * this software without specific prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28: * THE POSSIBILITY OF SUCH DAMAGE.
29: */package org.objectweb.asm.commons;
30:
31: import org.objectweb.asm.ClassVisitor;
32: import org.objectweb.asm.ClassWriter;
33: import org.objectweb.asm.MethodVisitor;
34: import org.objectweb.asm.Opcodes;
35:
36: import junit.framework.TestCase;
37:
38: /**
39: * StaticInitMerger tests.
40: *
41: * @author Eric Bruneton
42: */
43: public class StaticInitMergerTest extends TestCase implements Opcodes {
44:
45: private final static TestClassLoader LOADER = new TestClassLoader();
46:
47: public void test() throws Exception {
48: ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
49: ClassVisitor cv = new StaticInitMerger("$clinit$", cw);
50: cv.visit(V1_1, ACC_PUBLIC, "A", null, "java/lang/Object", null);
51: cv.visitField(ACC_PUBLIC + ACC_STATIC, "counter", "I", null,
52: null);
53: for (int i = 0; i < 5; ++i) {
54: MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "<clinit>",
55: "()V", null, null);
56: mv.visitFieldInsn(GETSTATIC, "A", "counter", "I");
57: mv.visitInsn(ICONST_1);
58: mv.visitInsn(IADD);
59: mv.visitFieldInsn(PUTSTATIC, "A", "counter", "I");
60: mv.visitInsn(RETURN);
61: mv.visitMaxs(0, 0);
62: }
63: MethodVisitor mv = cv.visitMethod(ACC_PUBLIC, "<init>", "()V",
64: null, null);
65: mv.visitVarInsn(ALOAD, 0);
66: mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>",
67: "()V");
68: mv.visitInsn(RETURN);
69: mv.visitMaxs(0, 0);
70: cv.visitEnd();
71:
72: Class c = LOADER.defineClass("A", cw.toByteArray());
73: assertEquals(c.getField("counter").getInt(c.newInstance()), 5);
74: }
75:
76: // ------------------------------------------------------------------------
77:
78: static class TestClassLoader extends ClassLoader {
79:
80: public Class defineClass(final String name, final byte[] b) {
81: return defineClass(name, b, 0, b.length);
82: }
83: }
84: }
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