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 * @bug 8081800 8010319 |
|
27 * @summary Redefine private and default interface methods |
|
28 * @library /test/lib |
|
29 * @modules java.base/jdk.internal.misc |
|
30 * @modules java.compiler |
|
31 * java.instrument |
|
32 * jdk.jartool/sun.tools.jar |
|
33 * @run main RedefineClassHelper |
|
34 * @run main/othervm -javaagent:redefineagent.jar -Xlog:redefine+class*=trace RedefineInterfaceMethods |
|
35 */ |
|
36 |
|
37 // package access top-level class to avoid problem with RedefineClassHelper |
|
38 // and nested types. |
|
39 |
|
40 interface RedefineInterfaceMethods_B { |
|
41 int ORIGINAL_RETURN = 1; |
|
42 int NEW_RETURN = 2; |
|
43 private int privateMethod() { |
|
44 return ORIGINAL_RETURN; |
|
45 } |
|
46 public default int defaultMethod() { |
|
47 return privateMethod(); |
|
48 } |
|
49 } |
|
50 |
|
51 public class RedefineInterfaceMethods { |
|
52 |
|
53 static final int RET = -2; |
|
54 |
|
55 public static String redefinedPrivateMethod = |
|
56 "interface RedefineInterfaceMethods_B {" + |
|
57 " int ORIGINAL_RETURN = 1;" + |
|
58 " int NEW_RETURN = 2;" + |
|
59 " private int privateMethod() {" + |
|
60 " return NEW_RETURN;" + |
|
61 " }" + |
|
62 " public default int defaultMethod() {" + |
|
63 " return privateMethod();" + |
|
64 " }" + |
|
65 "}"; |
|
66 |
|
67 public static String redefinedDefaultMethod = |
|
68 "interface RedefineInterfaceMethods_B {" + |
|
69 " int ORIGINAL_RETURN = 1;" + |
|
70 " int NEW_RETURN = 2;" + |
|
71 " private int privateMethod() {" + |
|
72 " return ORIGINAL_RETURN;" + |
|
73 " }" + |
|
74 " public default int defaultMethod() {" + |
|
75 " return RedefineInterfaceMethods.RET;" + |
|
76 " }" + |
|
77 "}"; |
|
78 |
|
79 static class Impl implements RedefineInterfaceMethods_B { |
|
80 } |
|
81 |
|
82 |
|
83 public static void main(String[] args) throws Exception { |
|
84 |
|
85 Impl impl = new Impl(); |
|
86 |
|
87 int res = impl.defaultMethod(); |
|
88 if (res != RedefineInterfaceMethods_B.ORIGINAL_RETURN) |
|
89 throw new Error("defaultMethod returned " + res + |
|
90 " expected " + RedefineInterfaceMethods_B.ORIGINAL_RETURN); |
|
91 |
|
92 RedefineClassHelper.redefineClass(RedefineInterfaceMethods_B.class, redefinedPrivateMethod); |
|
93 |
|
94 res = impl.defaultMethod(); |
|
95 if (res != RedefineInterfaceMethods_B.NEW_RETURN) |
|
96 throw new Error("defaultMethod returned " + res + |
|
97 " expected " + RedefineInterfaceMethods_B.NEW_RETURN); |
|
98 |
|
99 System.gc(); |
|
100 |
|
101 RedefineClassHelper.redefineClass(RedefineInterfaceMethods_B.class, redefinedDefaultMethod); |
|
102 |
|
103 res = impl.defaultMethod(); |
|
104 if (res != RET) |
|
105 throw new Error("defaultMethod returned " + res + |
|
106 " expected " + RET); |
|
107 } |
|
108 } |
|