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1 /* |
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2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 /* |
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25 * @test |
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26 * @bug 8081800 |
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27 * @summary Redefine private and default interface methods |
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28 * @library /test/lib |
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29 * @modules java.base/jdk.internal.misc |
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30 * @modules java.compiler |
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31 * java.instrument |
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32 * jdk.jartool/sun.tools.jar |
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33 * @run main RedefineClassHelper |
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34 * @run main/othervm -javaagent:redefineagent.jar -Xlog:redefine+class*=trace RedefineInterfaceMethods |
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35 */ |
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36 public class RedefineInterfaceMethods { |
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37 |
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38 static final int RET = -2; |
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39 |
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40 static interface B { |
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41 int ORIGINAL_RETURN = 1; |
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42 int NEW_RETURN = 2; |
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43 private int privateMethod() { |
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44 return ORIGINAL_RETURN; |
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45 } |
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46 public default int defaultMethod() { |
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47 return privateMethod(); |
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48 } |
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49 } |
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50 |
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51 public static String redefinedPrivateMethod = |
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52 "interface RedefineInterfaceMethods$B {" + |
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53 " int ORIGINAL_RETURN = 1;" + |
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54 " int NEW_RETURN = 2;" + |
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55 " private int privateMethod() {" + |
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56 " return NEW_RETURN;" + |
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57 " }" + |
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58 " public default int defaultMethod() {" + |
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59 " return privateMethod();" + |
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60 " }" + |
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61 "}"; |
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62 |
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63 public static String redefinedDefaultMethod = |
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64 "interface RedefineInterfaceMethods$B {" + |
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65 " int ORIGINAL_RETURN = 1;" + |
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66 " int NEW_RETURN = 2;" + |
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67 " private int privateMethod() {" + |
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68 " return ORIGINAL_RETURN;" + |
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69 " }" + |
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70 " public default int defaultMethod() {" + |
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71 " return RedefineInterfaceMethods.RET;" + |
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72 " }" + |
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73 "}"; |
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74 |
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75 static class Impl implements B { |
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76 } |
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77 |
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78 |
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79 public static void main(String[] args) throws Exception { |
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80 |
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81 Impl impl = new Impl(); |
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82 |
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83 int res = impl.defaultMethod(); |
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84 if (res != B.ORIGINAL_RETURN) |
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85 throw new Error("defaultMethod returned " + res + |
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86 " expected " + B.ORIGINAL_RETURN); |
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87 |
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88 RedefineClassHelper.redefineClass(B.class, redefinedPrivateMethod); |
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89 |
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90 res = impl.defaultMethod(); |
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91 if (res != B.NEW_RETURN) |
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92 throw new Error("defaultMethod returned " + res + |
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93 " expected " + B.NEW_RETURN); |
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94 |
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95 System.gc(); |
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96 |
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97 RedefineClassHelper.redefineClass(B.class, redefinedDefaultMethod); |
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98 |
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99 res = impl.defaultMethod(); |
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100 if (res != RET) |
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101 throw new Error("defaultMethod returned " + res + |
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102 " expected " + RET); |
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103 } |
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104 } |