1 /*

     2  * Copyright (c) 2010, 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

    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 6893943 6937318

    27  * @summary exit code from javah with no args is 0

    28  * @modules jdk.compiler/com.sun.tools.javah

    29  */

    30 

    31 import java.io.*;

    32 import java.util.*;

    33 

    34 public class T6893943 {

    35     static final String[] NO_ARGS = { "-XDsuppress-tool-removal-message" };

    36     static final String[] SUPPRESS_WARNING_PLUS_HELP = { "-XDsuppress-tool-removal-message", "-help" };

    37     static final String NEWLINE = System.getProperty("line.separator");

    38 

    39     public static void main(String... args) throws Exception {

    40         new T6893943().run();

    41     }

    42 

    43     void run() throws Exception {

    44         testSimpleAPI(NO_ARGS, 1);

    45         testSimpleAPI(SUPPRESS_WARNING_PLUS_HELP, 0);

    46         testCommand(NO_ARGS, 1);

    47         testCommand(SUPPRESS_WARNING_PLUS_HELP, 0);

    48     }

    49 

    50     void testSimpleAPI(String[] args, int expect_rc) throws Exception {

    51         System.err.println("Test simple api: " + Arrays.asList(args));

    52         StringWriter sw = new StringWriter();

    53         PrintWriter pw = new PrintWriter(sw);

    54         int rc = com.sun.tools.javah.Main.run(args, pw);

    55         pw.close();

    56         expect("testSimpleAPI", sw.toString(), rc, expect_rc);

    57     }

    58 

    59     void testCommand(String[] args, int expect_rc) throws Exception {

    60         System.err.println("Test command: " + Arrays.asList(args));

    61         File javaHome = new File(System.getProperty("java.home"));

    62         List<String> command = new ArrayList<String>();

    63         command.add(new File(new File(javaHome, "bin"), "javah").getPath());

    64         command.addAll(Arrays.asList(args));

    65         //System.err.println("command: " + command);

    66 

    67         ProcessBuilder pb = new ProcessBuilder(command);

    68         pb.redirectErrorStream(true);

    69         Process p = pb.start();

    70         p.getOutputStream().close();

    71         StringWriter sw = new StringWriter();

    72         String line;

    73         BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));

    74         while ((line = in.readLine()) != null)

    75             sw.write(line + NEWLINE);

    76         int rc = p.waitFor();

    77         expect("testCommand", sw.toString(), rc, expect_rc);

    78     }

    79 

    80     void expect(String name, String out, int actual_rc, int expect_rc) throws Exception {

    81         if (out.isEmpty())

    82             throw new Exception("No output from javah");

    83 

    84         if (actual_rc != expect_rc)

    85             throw new Exception(name + ": unexpected exit: " + actual_rc + ", expected: " + expect_rc);

    86     }

    87 }