1 /*
2 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /**
25 * @test
26 * @modules java.base/jdk.internal.misc
27 * @library /test/lib ..
28 * @compile p2/c2.java
29 * @compile p4/c4.java
30 * @build sun.hotspot.WhiteBox
31 * @compile/module=java.base java/lang/ModuleHelper.java
32 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
33 * sun.hotspot.WhiteBox$WhiteBoxPermission
34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI CCE_module_msg
35 */
36
37 import java.io.*;
38 import java.net.URL;
39 import java.net.URLClassLoader;
40 import java.nio.file.Path;
41 import java.nio.file.Paths;
42 import static jdk.test.lib.Asserts.*;
43
44 // Test that the message in a runtime ClassCastException contains module info.
45 public class CCE_module_msg {
46 private static final Path CLASSES_DIR = Paths.get("classes");
47
48 public static void main(String[] args) throws Throwable {
49 // Should not display version
50 invalidObjectToDerived();
51 invalidTimeToDerived();
52 invalidHeadersToDerived();
53 // Should display version
54 invalidClassToString();
55 // Should display customer class loader
56 invalidClassToStringCustomLoader();
57 }
58
59 public static void invalidObjectToDerived() {
60 java.lang.Object instance = new java.lang.Object();
61 int left = 23;
62 int right = 42;
63 try {
64 for (int i = 0; i < 1; i += 1) {
65 left = ((Derived) instance).method(left, right);
66 }
67 throw new RuntimeException("ClassCastException wasn't thrown, test failed.");
68 } catch (ClassCastException cce) {
69 System.out.println(cce.getMessage());
70 if (!cce.getMessage().contains("java.base/java.lang.Object cannot be cast to Derived")) {
71 throw new RuntimeException("Wrong message: " + cce.getMessage());
72 }
73 }
74 }
75
76 // Test with a non-upgradeable 'java.' module other than java.base.
77 public static void invalidTimeToDerived() {
78 java.sql.Time instance = new java.sql.Time(10000);
79 int left = 23;
80 int right = 42;
81 try {
82 for (int i = 0; i < 1; i += 1) {
83 left = ((Derived) (java.lang.Object)instance).method(left, right);
84 }
85 throw new RuntimeException("ClassCastException wasn't thrown, test failed.");
86 } catch (ClassCastException cce) {
87 System.out.println(cce.getMessage());
88 if (!cce.getMessage().contains("java.sql/java.sql.Time cannot be cast to Derived")) {
89 throw new RuntimeException("Wrong message: " + cce.getMessage());
90 }
91 }
92 }
93
94 // Test with a non-upgradeable 'jdk.' module.
95 public static void invalidHeadersToDerived() {
96 com.sun.net.httpserver.Headers instance = new com.sun.net.httpserver.Headers();
97 int left = 23;
98 int right = 42;
99 try {
100 for (int i = 0; i < 1; i += 1) {
101 left = ((Derived) (java.lang.Object)instance).method(left, right);
102 }
103 throw new RuntimeException("ClassCastException wasn't thrown, test failed.");
104 } catch (ClassCastException cce) {
105 System.out.println(cce.getMessage());
106 if (!cce.getMessage().contains("jdk.httpserver/com.sun.net.httpserver.Headers cannot be cast to Derived")) {
107 throw new RuntimeException("Wrong message: " + cce.getMessage());
108 }
109 }
110 }
111
112 public static void invalidClassToString() throws Throwable {
113 // Get the java.lang.Module object for module java.base.
114 Class jlObject = Class.forName("java.lang.Object");
115 Object jlObject_jlM = jlObject.getModule();
116 assertNotNull(jlObject_jlM, "jlModule object of java.lang.Object should not be null");
117
118 // Get the class loader for CCE_module_msg and assume it's also used to
119 // load classes p1.c1 and p2.c2.
120 ClassLoader this_cldr = CCE_module_msg.class.getClassLoader();
121
122 // Define a module for p2.
123 Object m2x = ModuleHelper.ModuleObject("module_two", this_cldr, new String[] { "p2" });
124 assertNotNull(m2x, "Module should not be null");
125 ModuleHelper.DefineModule(m2x, false, "9.0", "m2x/there", new String[] { "p2" });
126 ModuleHelper.AddReadsModule(m2x, jlObject_jlM);
127
128 try {
129 ModuleHelper.AddModuleExportsToAll(m2x, "p2");
130 Object p2Obj = new p2.c2();
131 System.out.println((String)p2Obj);
132 throw new RuntimeException("ClassCastException wasn't thrown, test failed.");
133 } catch (ClassCastException cce) {
134 String exception = cce.getMessage();
135 System.out.println(exception);
136 if (exception.contains("module_two/p2.c2") ||
137 !(exception.contains("module_two@") &&
138 exception.contains("/p2.c2 cannot be cast to java.base/java.lang.String"))) {
139 throw new RuntimeException("Wrong message: " + exception);
140 }
141 }
142 }
143
144 public static void invalidClassToStringCustomLoader() throws Throwable {
145 // Get the java.lang.Module object for module java.base.
146 Class jlObject = Class.forName("java.lang.Object");
147 Object jlObject_jlM = jlObject.getModule();
148 assertNotNull(jlObject_jlM, "jlModule object of java.lang.Object should not be null");
149
150 // Create a customer class loader to load class p4/c4.
151 URL[] urls = new URL[] { CLASSES_DIR.toUri().toURL() };
152 ClassLoader parent = ClassLoader.getSystemClassLoader();
153 MyURLClassLoader myCldr = new MyURLClassLoader("MyClassLoader", urls, parent);
154
155 try {
156 // Class p4.c4 should be defined to the unnamed module of myCldr
157 Class p4_c4_class = myCldr.loadClass("p4.c4");
158 Object c4Obj = p4_c4_class.newInstance();
159 System.out.println((String)c4Obj);
160 throw new RuntimeException("ClassCastException wasn't thrown, test failed.");
161 } catch (ClassCastException cce) {
162 String exception = cce.getMessage();
163 System.out.println(exception);
164 if (!exception.contains("MyClassLoader//p4.c4 cannot be cast to java.base/java.lang.String")) {
165 throw new RuntimeException("Wrong message: " + exception);
166 }
167 }
168 }
169 }
170
171 class Derived extends java.lang.Object {
172 public int method(int left, int right) {
173 return right;
174 }
175 }
176
177 class MyURLClassLoader extends URLClassLoader {
178 public MyURLClassLoader(String name,
179 URL[] urls,
180 ClassLoader parent) {
181 super(name, urls, parent);
182 }
183
184 public Class loadClass(String name) throws ClassNotFoundException {
185 if (!name.equals("p4.c4")) {
186 return super.loadClass(name);
187 }
188 byte[] data = getClassData(name);
189 return defineClass(name, data, 0, data.length);
190 }
191
192 byte[] getClassData(String name) {
193 try {
194 String TempName = name.replaceAll("\\.", "/");
195 String currentDir = System.getProperty("test.classes");
196 String filename = currentDir + File.separator + TempName + ".class";
197 FileInputStream fis = new FileInputStream(filename);
198 byte[] b = new byte[5000];
199 int cnt = fis.read(b, 0, 5000);
200 byte[] c = new byte[cnt];
201 for (int i=0; i<cnt; i++) c[i] = b[i];
202 return c;
203 } catch (IOException e) {
204 return null;
205 }
206 }
207 }