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 
  24 import java.io.*;
  25 import java.util.*;
  26 
  27 /*
  28  * @test
  29  * @bug 6715251
  30  * @summary javap should be consistent with javac and return 2 if given no arguments
  31  * @modules jdk.compiler
  32  */
  33 
  34 public class T6715251 {
  35     public static void main(String... args) throws Exception {
  36         new T6715251().run();
  37     }
  38 
  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 
  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 
  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 
  68     void error(String msg) {
  69         System.err.println(msg);
  70         errors++;
  71     }
  72 
  73     String log;
  74     int errors;
  75 }