jdk8-mips64-public/langtools: test/tools/javap/T4876942.java@4a48f3173534

     1 /*

     2  * Copyright (c) 2008, 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  */

    24 /*

    25  * @test

    26  * @bug 4876942 6715251

    27  * @summary javap invoked without args does not print help screen

    28  */

    30 import java.io.*;

    31 import java.util.zip.*;

    33 public class T4876942 {

    34     public static void main(String[] args) throws Exception {

    35         new T4876942().run();

    36     }

    38     public void run() throws IOException {

    39         String output = javap();

    40         verify(output, "-public", "-protected", "-private"); // check that some of the options are listed

    42         if (errors > 0)

    43             throw new Error(errors + " found.");

    44     }

    46     String javap(String... args) {

    47         StringWriter sw = new StringWriter();

    48         PrintWriter out = new PrintWriter(sw);

    49         //sun.tools.javap.Main.entry(args);

    50         int rc = com.sun.tools.javap.Main.run(args, out);

    51         if (rc != (args.length == 0 ? 2 : 0))

    52             throw new Error("javap failed. rc=" + rc);

    53         out.close();

    54         return sw.toString();

    55     }

    57     void verify(String output, String... expects) {

    58         for (String expect: expects) {

    59             if (output.indexOf(expect)< 0)

    60                 error(expect + " not found");

    61         }

    62     }

    64     void error(String msg) {

    65         System.err.println(msg);

    66         errors++;

    67     }

    69     int errors;

    70 }

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