1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
*
*
* Basic unit test for Instrumentation appendToBootstrapClassLoaderSearch and
* appendToSystemClassLoaderSearch methods:
*
* 1. Attempt to load a class that does not exist.
*
* 2. Add a jar file to the class path with the missing class.
*
* 3. Attempt to load the class again - CNF should be thrown as the JVMS requires that
* the error from the first resolution attempt should be thrown.
*/
import java.lang.instrument.Instrumentation;
import java.util.jar.JarFile;
import java.io.IOException;
public class PrematureLoadTest {
static int failures = 0;
public static void main(String args[]) throws IOException {
try {
new BootSupport();
throw new RuntimeException("Test configuration error - BootSupport loaded unexpectedly!");
} catch (NoClassDefFoundError x) {
}
try {
new AgentSupport();
throw new RuntimeException("Test configuration error - AgentSupport loaded unexpectedly!");
} catch (NoClassDefFoundError x) {
}
JarFile bootclasses = new JarFile("BootSupport.jar");
JarFile agentclasses = new JarFile("AgentSupport.jar");
Instrumentation ins = Agent.getInstrumentation();
ins.appendToBootstrapClassLoaderSearch(bootclasses);
try {
new BootSupport();
System.out.println("FAIL: BootSupport resolved");
failures++;
} catch (NoClassDefFoundError x) {
System.out.println("PASS: BootSupport failed to resolve");
}
try {
ins.appendToSystemClassLoaderSearch(agentclasses);
try {
new AgentSupport();
System.out.println("FAIL: AgentSupport resolved");
failures++;
} catch (NoClassDefFoundError x) {
System.out.println("PASS: AgentSupport failed to resolve");
}
} catch (UnsupportedOperationException x) {
System.out.println("System class loader does not support adding to class path");
}
if (failures > 0) {
throw new RuntimeException(failures + " test(s) failed.");
}
}
}
|
