1 /*
2 * Copyright (c) 2013, 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 8011940
27 * @summary Test inheritance, order and class redefinition behaviour of RUNTIME
28 * class annotations
29 * @author plevart
30 */
31
32 import sun.reflect.annotation.AnnotationParser;
33
34 import java.lang.annotation.Annotation;
35 import java.lang.annotation.Inherited;
36 import java.lang.annotation.Retention;
37 import java.lang.annotation.RetentionPolicy;
38 import java.lang.reflect.Field;
39 import java.lang.reflect.InvocationTargetException;
40 import java.util.ArrayList;
41 import java.util.Arrays;
42 import java.util.Collections;
43 import java.util.List;
44 import java.util.StringJoiner;
45
46 public class AnnotationsInheritanceOrderRedefinitionTest {
47
48 @Retention(RetentionPolicy.RUNTIME)
49 @Inherited
50 @interface Ann1 {
51 String value();
52 }
53
54 @Retention(RetentionPolicy.RUNTIME)
55 @Inherited
56 @interface Ann2 {
57 String value();
58 }
59
60 @Retention(RetentionPolicy.RUNTIME)
61 @Inherited
62 @interface Ann3 {
63 String value();
64 }
65
66 @Ann1("A")
67 @Ann2("A")
68 static class A {}
69
70 @Ann3("B")
71 static class B extends A {}
72
73 @Ann1("C")
74 @Ann3("C")
75 static class C extends B {}
76
77 public static void main(String[] args) {
78
79 StringBuilder msgs = new StringBuilder();
80 boolean ok = true;
81
82 ok &= annotationsEqual(msgs, A.class, true,
83 ann(Ann1.class, "A"), ann(Ann2.class, "A"));
84 ok &= annotationsEqual(msgs, A.class, false,
85 ann(Ann1.class, "A"), ann(Ann2.class, "A"));
86 ok &= annotationsEqual(msgs, B.class, true,
87 ann(Ann3.class, "B"));
88 ok &= annotationsEqual(msgs, B.class, false,
89 ann(Ann1.class, "A"), ann(Ann2.class, "A"), ann(Ann3.class, "B"));
90 ok &= annotationsEqual(msgs, C.class, true,
91 ann(Ann1.class, "C"), ann(Ann3.class, "C"));
92 ok &= annotationsEqual(msgs, C.class, false,
93 ann(Ann1.class, "C"), ann(Ann2.class, "A"), ann(Ann3.class, "C"));
94
95 Annotation[] declaredAnnotatiosA = A.class.getDeclaredAnnotations();
96 Annotation[] annotationsA = A.class.getAnnotations();
97 Annotation[] declaredAnnotatiosB = B.class.getDeclaredAnnotations();
98 Annotation[] annotationsB = B.class.getAnnotations();
99 Annotation[] declaredAnnotatiosC = C.class.getDeclaredAnnotations();
100 Annotation[] annotationsC = C.class.getAnnotations();
101
102 incrementClassRedefinedCount(A.class);
103 incrementClassRedefinedCount(B.class);
104 incrementClassRedefinedCount(C.class);
105
106 ok &= annotationsEqualButNotSame(msgs, A.class, true, declaredAnnotatiosA);
107 ok &= annotationsEqualButNotSame(msgs, A.class, false, annotationsA);
108 ok &= annotationsEqualButNotSame(msgs, B.class, true, declaredAnnotatiosB);
109 ok &= annotationsEqualButNotSame(msgs, B.class, false, annotationsB);
110 ok &= annotationsEqualButNotSame(msgs, C.class, true, declaredAnnotatiosC);
111 ok &= annotationsEqualButNotSame(msgs, C.class, false, annotationsC);
112
113 if (!ok) {
114 throw new RuntimeException("test failure\n" + msgs);
115 }
116 }
117
118 // utility methods
119
120 private static boolean annotationsEqualButNotSame(StringBuilder msgs,
121 Class<?> declaringClass, boolean declaredOnly, Annotation[] oldAnns) {
122 if (!annotationsEqual(msgs, declaringClass, declaredOnly, oldAnns)) {
123 return false;
124 }
125 Annotation[] anns = declaredOnly
126 ? declaringClass.getDeclaredAnnotations()
127 : declaringClass.getAnnotations();
128 List<Annotation> sameAnns = new ArrayList<>();
129 for (int i = 0; i < anns.length; i++) {
130 if (anns[i] == oldAnns[i]) {
131 sameAnns.add(anns[i]);
132 }
133 }
134 if (!sameAnns.isEmpty()) {
135 msgs.append(declaredOnly ? "declared " : "").append("annotations for ")
136 .append(declaringClass.getSimpleName())
137 .append(" not re-parsed after class redefinition: ")
138 .append(toSimpleString(sameAnns)).append("\n");
139 return false;
140 } else {
141 return true;
142 }
143 }
144
145 private static boolean annotationsEqual(StringBuilder msgs,
146 Class<?> declaringClass, boolean declaredOnly, Annotation... expectedAnns) {
147 Annotation[] anns = declaredOnly
148 ? declaringClass.getDeclaredAnnotations()
149 : declaringClass.getAnnotations();
150 if (!Arrays.equals(anns, expectedAnns)) {
151 msgs.append(declaredOnly ? "declared " : "").append("annotations for ")
152 .append(declaringClass.getSimpleName()).append(" are: ")
153 .append(toSimpleString(anns)).append(", expected: ")
154 .append(toSimpleString(expectedAnns)).append("\n");
155 return false;
156 } else {
157 return true;
158 }
159 }
160
161 private static Annotation ann(Class<? extends Annotation> annotationType,
162 Object value) {
163 return AnnotationParser.annotationForMap(annotationType,
164 Collections.singletonMap("value", value));
165 }
166
167 private static String toSimpleString(List<Annotation> anns) {
168 return toSimpleString(anns.toArray(new Annotation[anns.size()]));
169 }
170
171 private static String toSimpleString(Annotation[] anns) {
172 StringJoiner joiner = new StringJoiner(", ");
173 for (Annotation ann : anns) {
174 joiner.add(toSimpleString(ann));
175 }
176 return joiner.toString();
177 }
178
179 private static String toSimpleString(Annotation ann) {
180 Class<? extends Annotation> annotationType = ann.annotationType();
181 Object value;
182 try {
183 value = annotationType.getDeclaredMethod("value").invoke(ann);
184 } catch (IllegalAccessException | InvocationTargetException
185 | NoSuchMethodException e) {
186 throw new RuntimeException(e);
187 }
188 return "@" + annotationType.getSimpleName() + "(" + value + ")";
189 }
190
191 private static final Field classRedefinedCountField;
192
193 static {
194 try {
195 classRedefinedCountField = Class.class.getDeclaredField("classRedefinedCount");
196 classRedefinedCountField.setAccessible(true);
197 } catch (NoSuchFieldException e) {
198 throw new Error(e);
199 }
200 }
201
202 private static void incrementClassRedefinedCount(Class<?> clazz) {
203 try {
204 classRedefinedCountField.set(clazz,
205 ((Integer) classRedefinedCountField.get(clazz)) + 1);
206 } catch (IllegalAccessException e) {
207 throw new RuntimeException(e);
208 }
209 }
210 }