1 /*
2  * Copyright (c) 2008, 2016, 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
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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
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22  */
23 
24 /*
25  * @test
26  * @bug 6715251
27  * @summary javap should be consistent with javac and return 2 if given no arguments
28  * @modules jdk.jdeps/com.sun.tools.javap
29  */
30 
31 import java.io.*;
32 import java.util.*;
33 
34 public class T6715251 {
main(String... args)35     public static void main(String... args) throws Exception {
36         new T6715251().run();
37     }
38 
run()39     void run() throws Exception {
40         String testClasses = System.getProperty("test.classes", ".");
41 
42         test(2);
43         test(0, "-help");
44         test(0, "-version");
45         test(0, "-fullversion");
46         test(0, "-classpath", testClasses, "T6715251");
47 
48         if (errors > 0)
49             throw new Exception(errors + " errors received");
50     }
51 
test(int expect, String ... args)52     void test(int expect, String ... args) {
53         int rc = javap(args);
54         if (rc != expect)
55             error("bad result: expected: " + expect + ", found " + rc + "\n"
56                   + log);
57 
58     }
59 
javap(String... args)60     int javap(String... args) {
61         StringWriter sw = new StringWriter();
62         PrintWriter pw = new PrintWriter(sw);
63         int rc = com.sun.tools.javap.Main.run(args, pw);
64         log = sw.toString();
65         return rc;
66     }
67 
error(String msg)68     void error(String msg) {
69         System.err.println(msg);
70         errors++;
71     }
72 
73     String log;
74     int errors;
75 }
76