T4111861.java revision 2933:49d207bf704d 
1/*
2 * Copyright (c) 2008, 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
24import java.io.*;
25
26/*
27 * @test
28 * @bug 4111861
29 * @summary static final field contents are not displayed
30 * @modules jdk.compiler
31 */
32public class T4111861 {
33    public static void main(String... args) throws Exception {
34        new T4111861().run();
35    }
36
37    void run() throws Exception {
38        File testSrc = new File(System.getProperty("test.src", "."));
39        File a_java = new File(testSrc, "A.java");
40        javac("-d", ".", a_java.getPath());
41
42        String out = javap("-classpath", ".", "-constants", "A");
43
44        String a = read(a_java);
45
46        if (!filter(out).equals(filter(read(a_java)))) {
47            System.out.println(out);
48            throw new Exception("unexpected output");
49        }
50    }
51
52    String javac(String... args) throws Exception {
53        StringWriter sw = new StringWriter();
54        PrintWriter pw = new PrintWriter(sw);
55        int rc = com.sun.tools.javac.Main.compile(args, pw);
56        if (rc != 0)
57            throw new Exception("javac failed, rc=" + rc);
58        return sw.toString();
59    }
60
61    String javap(String... args) throws Exception {
62        StringWriter sw = new StringWriter();
63        PrintWriter pw = new PrintWriter(sw);
64        int rc = com.sun.tools.javap.Main.run(args, pw);
65        if (rc != 0)
66            throw new Exception("javap failed, rc=" + rc);
67        return sw.toString();
68    }
69
70    String read(File f) throws IOException {
71        StringBuilder sb = new StringBuilder();
72        BufferedReader in = new BufferedReader(new FileReader(f));
73        try {
74            String line;
75            while ((line = in.readLine()) != null) {
76                sb.append(line);
77                sb.append('\n');
78            }
79        } finally {
80            in.close();
81        }
82        return sb.toString();
83    }
84
85    // return those lines beginning "public static final"
86    String filter(String s) throws IOException {
87        StringBuilder sb = new StringBuilder();
88        BufferedReader in = new BufferedReader(new StringReader(s));
89        try {
90            String line;
91            while ((line = in.readLine()) != null) {
92                if (line.indexOf("public static final") > 0) {
93                    sb.append(line.trim());
94                    sb.append('\n');
95                }
96            }
97        } finally {
98            in.close();
99        }
100        return sb.toString();
101    }
102}
103