1/*
2 * Copyright (c) 2011, 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 7086192
27 * @summary Verify functionality of AnnotatedElement methods on type variables
28 * @author Joseph D. Darcy
29 */
30
31import java.lang.reflect.*;
32import java.lang.annotation.*;
33
34public class TestAnnotatedElement<A> {
35    // Type variable on a method
36    private static <B> B m(B b) {return null;}
37
38    // Type variable on a construtor
39    private <C> TestAnnotatedElement(){super();}
40
41    public static void main(String... argv) throws ReflectiveOperationException {
42        int errors = 0;
43
44        Class<?> clazz = TestAnnotatedElement.class;
45        errors += testTypeVariable(clazz.getTypeParameters());
46        errors += testTypeVariable(clazz.getDeclaredConstructor().getTypeParameters());
47        errors += testTypeVariable(clazz.getDeclaredMethod("m", Object.class).getTypeParameters());
48
49        if (errors > 0)
50            throw new RuntimeException(errors + " failures");
51    }
52
53
54    private static int testTypeVariable(TypeVariable<?>[] typeVars) {
55        int errors = 0;
56        if (typeVars.length == 0)
57            return ++errors;
58
59        for(TypeVariable<?> typeVar : typeVars) {
60            try {
61                typeVar.getAnnotation(null);
62                errors++;
63            } catch(NullPointerException npe) {
64                ; // Expected
65            }
66
67            if (typeVar.getAnnotation(SuppressWarnings.class) != null)
68                errors++;
69
70            try {
71                typeVar.isAnnotationPresent(null);
72                errors++;
73            } catch(NullPointerException npe) {
74                ; // Expected
75            }
76
77            if (typeVar.isAnnotationPresent(SuppressWarnings.class))
78                errors++;
79
80            if(typeVar.getAnnotations().length != 0)
81                errors++;
82
83            if(typeVar.getDeclaredAnnotations().length != 0)
84                errors++;
85        }
86        return errors;
87    }
88}
89