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 invalidOriginalInnerToDerived();
52 invalidTimeToDerived();
53 invalidHeadersToDerived();
54 // Should display version
55 invalidClassToString();
56 // Should display customer class loader
57 invalidClassToStringCustomLoader();
58 }
59
60 public static void invalidObjectToDerived() {
61 java.lang.Object instance = new java.lang.Object();
62 int left = 23;
63 int right = 42;
64 try {
65 for (int i = 0; i < 1; i += 1) {
66 left = ((Derived) instance).method(left, right);
67 }
68 throw new RuntimeException("ClassCastException wasn't thrown, test failed.");
69 } catch (ClassCastException cce) {
70 System.out.println(cce.toString());
71 if (!cce.getMessage().contains("class java.lang.Object cannot be cast to class Derived (java.lang.Object is in module java.base of loader 'bootstrap'; Derived is in unnamed module of loader 'app')")) {
72 throw new RuntimeException("Wrong message: " + cce.getMessage());
73 }
74 }
75 }
76
77 public static void invalidOriginalInnerToDerived() {
78 OriginalInner instance = new OriginalInner();
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.toString());
88 if (!cce.getMessage().contains("class OriginalInner cannot be cast to class Derived (OriginalInner and Derived are in unnamed module of loader 'app')")) {
89 throw new RuntimeException("Wrong message: " + cce.getMessage());
90 }
91 }
92 }
93
94 // Test with a non-upgradeable 'java.' module other than java.base.
95 public static void invalidTimeToDerived() {
96 java.sql.Time instance = new java.sql.Time(10000);
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.toString());
106 if (!cce.getMessage().contains("class java.sql.Time cannot be cast to class Derived (java.sql.Time is in module java.sql of loader 'platform'; Derived is in unnamed module of loader 'app')")) {
107 throw new RuntimeException("Wrong message: " + cce.getMessage());
108 }
109 }
110 }
111
112 // Test with a non-upgradeable 'jdk.' module.
113 public static void invalidHeadersToDerived() {
114 com.sun.net.httpserver.Headers instance = new com.sun.net.httpserver.Headers();
115 int left = 23;
116 int right = 42;
117 try {
118 for (int i = 0; i < 1; i += 1) {
119 left = ((Derived) (java.lang.Object)instance).method(left, right);
120 }
121 throw new RuntimeException("ClassCastException wasn't thrown, test failed.");
122 } catch (ClassCastException cce) {
123 System.out.println(cce.toString());
124 if (!cce.getMessage().contains("class com.sun.net.httpserver.Headers cannot be cast to class Derived (com.sun.net.httpserver.Headers is in module jdk.httpserver of loader 'platform'; Derived is in unnamed module of loader 'app')")) {
125 throw new RuntimeException("Wrong message: " + cce.getMessage());
126 }
127 }
128 }
129
130 public static void invalidClassToString() throws Throwable {
131 // Get the java.lang.Module object for module java.base.
132 Class jlObject = Class.forName("java.lang.Object");
133 Object jlObject_jlM = jlObject.getModule();
134 assertNotNull(jlObject_jlM, "jlModule object of java.lang.Object should not be null");
135
136 // Get the class loader for CCE_module_msg and assume it's also used to
137 // load classes p1.c1 and p2.c2.
138 ClassLoader this_cldr = CCE_module_msg.class.getClassLoader();
139
140 // Define a module for p2.
141 Object m2x = ModuleHelper.ModuleObject("module_two", this_cldr, new String[] { "p2" });
142 assertNotNull(m2x, "Module should not be null");
143 ModuleHelper.DefineModule(m2x, false, "9.0", "m2x/there", new String[] { "p2" });
144 ModuleHelper.AddReadsModule(m2x, jlObject_jlM);
145
146 try {
147 ModuleHelper.AddModuleExportsToAll(m2x, "p2");
148 Object p2Obj = new p2.c2();
149 System.out.println((String)p2Obj);
150 throw new RuntimeException("ClassCastException wasn't thrown, test failed.");
151 } catch (ClassCastException cce) {
152 String exception = cce.getMessage();
153 System.out.println(cce.toString());
154 if (!exception.contains("class p2.c2 cannot be cast to class java.lang.String (p2.c2 is in module module_two@") ||
155 !exception.contains(" of loader 'app'; java.lang.String is in module java.base of loader 'bootstrap')")) {
156 throw new RuntimeException("Wrong message: " + exception);
157 }
158 }
159 }
160
161 public static void invalidClassToStringCustomLoader() throws Throwable {
162 // Get the java.lang.Module object for module java.base.
163 Class jlObject = Class.forName("java.lang.Object");
164 Object jlObject_jlM = jlObject.getModule();
165 assertNotNull(jlObject_jlM, "jlModule object of java.lang.Object should not be null");
166
167 // Create a customer class loader to load class p4/c4.
168 URL[] urls = new URL[] { CLASSES_DIR.toUri().toURL() };
169 ClassLoader parent = ClassLoader.getSystemClassLoader();
170 MyURLClassLoader myCldr = new MyURLClassLoader("MyClassLoader", urls, parent);
171
172 try {
173 // Class p4.c4 should be defined to the unnamed module of myCldr
174 Class p4_c4_class = myCldr.loadClass("p4.c4");
175 Object c4Obj = p4_c4_class.newInstance();
176 System.out.println((String)c4Obj);
177 throw new RuntimeException("ClassCastException wasn't thrown, test failed.");
178 } catch (ClassCastException cce) {
179 String exception = cce.getMessage();
180 System.out.println(cce.toString());
181 if (!exception.contains("class p4.c4 cannot be cast to class java.lang.String (p4.c4 is in unnamed module of loader 'MyClassLoader' @") ||
182 !exception.contains("; java.lang.String is in module java.base of loader 'bootstrap')")) {
183 throw new RuntimeException("Wrong message: " + exception);
184 }
185 }
186 }
187 }
188
189 class OriginalInner extends java.lang.Object {
190 public int method(int left, int right) {
191 return right;
192 }
193 }
194
195 class Derived extends java.lang.Object {
196 public int method(int left, int right) {
197 return right;
198 }
199 }
200
201 class MyURLClassLoader extends URLClassLoader {
202 public MyURLClassLoader(String name,
203 URL[] urls,
204 ClassLoader parent) {
205 super(name, urls, parent);
206 }
207
208 public Class loadClass(String name) throws ClassNotFoundException {
209 if (!name.equals("p4.c4")) {
210 return super.loadClass(name);
211 }
212 byte[] data = getClassData(name);
213 return defineClass(name, data, 0, data.length);
214 }
215
216 byte[] getClassData(String name) {
217 try {
218 String TempName = name.replaceAll("\\.", "/");
219 String currentDir = System.getProperty("test.classes");
220 String filename = currentDir + File.separator + TempName + ".class";
221 FileInputStream fis = new FileInputStream(filename);
222 byte[] b = new byte[5000];
223 int cnt = fis.read(b, 0, 5000);
224 byte[] c = new byte[cnt];
225 for (int i=0; i<cnt; i++) c[i] = b[i];
226 return c;
227 } catch (IOException e) {
228 return null;
229 }
230 }
231 }