1 /*
2 * Copyright (c) 2015, 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 import java.lang.reflect.Method;
25 import java.lang.reflect.Modifier;
26 import java.util.ArrayList;
27 import java.util.Arrays;
28 import java.util.Dictionary;
29 import java.util.Hashtable;
30 import java.util.List;
31 import java.util.Map;
32 import java.util.Properties;
33
34 /*
35 * @test
36 * @bug 8029891
37 * @summary Test that the Properties class overrides all public+protected
38 * methods of all ancestor classes and interfaces
39 * @run main CheckOverrides
40 * @author bchristi
41 */
42 public class CheckOverrides {
43 private static List<SameMethodNoClass> pMethods;
44
45 private static boolean isMethodOfInterest(Method method) {
46 int mods = method.getModifiers();
47 return !Modifier.isStatic(mods) &&
48 (Modifier.isPublic(mods) || Modifier.isProtected(mods));
49 }
50
51 public static void main(String[] args) {
52 // Create list of all non-static, public/protected Properties methods
53 Class propsClass = Properties.class;
54 Method[] pMethodArray = propsClass.getDeclaredMethods();
55 pMethods = new ArrayList<>(pMethodArray.length);
56
57 for (Method method : pMethodArray ) {
58 if (isMethodOfInterest(method)) {
59 pMethods.add(new SameMethodNoClass(method));
60 }
61 }
62 System.out.println(pMethods.size() + " non-static, public/protected"
63 + " methods in " + propsClass);
64
65 // Assemble list of all interfaces and classes to check
66 List<Class> classesToCheck = new ArrayList<>();
67 classesToCheck.addAll(Arrays.asList(propsClass.getInterfaces()));
68
69 Class superClass = propsClass.getSuperclass();
70 while (!superClass.equals(Object.class)) {
71 classesToCheck.add(superClass);
72 classesToCheck.addAll(Arrays.asList(superClass.getInterfaces()));
73 superClass = superClass.getSuperclass();
74 }
75
76 boolean passed = true;
77 for (Class toCheck : classesToCheck) {
78 passed = checkClass(toCheck) && passed;
79 }
80 if (!passed) {
81 throw new RuntimeException("Test failed");
82 }
83 System.out.println("Test passed");
84 }
85
86 /**
87 * Check Properties for methods in the given class.
88 * Return true if all found, false otherwise
89 */
90 private static boolean checkClass(Class clazz) {
91 boolean passed = true;
92 // For each non-static, public/protected method, confirm
93 // that it's in the list.
94 Method[] methods = clazz.getDeclaredMethods();
95 int numPubProcMethods = 0;
96
97 for (Method method : methods) {
98 if (isMethodOfInterest(method)) {
99 numPubProcMethods++;
100 boolean contains = pMethods.contains(new
101 SameMethodNoClass(method));
102 if (!contains) {
103 passed = false;
104 System.out.println("Properties does not contain: " + method);
105 System.out.println(" from: " + clazz);
106 }
107 }
108 }
109 System.out.println("Checked " + numPubProcMethods + " public/protected "
110 + "methods in " + clazz);
111 return passed;
112 }
113
114 /*
115 * Wrapper to compare Methods, ignoring declaring Class
116 */
117 private static class SameMethodNoClass {
118 public Method method;
119 public SameMethodNoClass(Method method) { this.method = method; }
120
121 @Override
122 public boolean equals(Object other) {
123 if (other instanceof SameMethodNoClass) {
124 SameMethodNoClass smnc = (SameMethodNoClass)other;
125
126 return this.method.getName().equals(smnc.method.getName()) &&
127 this.method.getReturnType().equals(smnc.method.getReturnType()) &&
128 Arrays.equals(this.method.getParameterTypes(),
129 smnc.method.getParameterTypes()) &&
130 Arrays.equals(this.method.getExceptionTypes(),
131 smnc.method.getExceptionTypes());
132 }
133 return false;
134 }
135 @Override
136 public int hashCode() { return method.hashCode(); }
137 @Override
138 public String toString() { return method.toString(); }
139 }
140 }