Quelle ExitValue.java Sprache: JAVA

/*
* Copyright (c) 2002, 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/

/*
* @test
* @bug 4680945 4873419
* @summary Check process exit code
* @author kladko, Martin Buchholz
*/

import java.io.File;

public class ExitValue
{

    public static String join(String separator, String[] elts) {
        String result = elts[0];
        for (int i = 1; i < elts.length; ++i)
            result = result + separator + elts[i];
        return result;
    }

    public static void checkExitValue(String[] commandArgs,
                                      int expectedExitValue)
        throws Exception
    {
        if (! (new File(commandArgs[0]).exists()))
            return;

        System.out.println("Running command: " + join(" ", commandArgs));
        Process proc = Runtime.getRuntime().exec(commandArgs);
        int val;
        byte[] buf = new byte[4096];
        int n = proc.getErrorStream().read(buf);
        if (n > 0)
            throw new Exception
                ("Unexpected stderr: "
                 + new String(buf, 0, n, "ASCII"));
        if ((val = proc.waitFor()) != expectedExitValue)
            throw new Exception
                ("waitFor() returned unexpected value " + val);
        if ((val = proc.exitValue()) != expectedExitValue)
            throw new Exception
                ("exitValue() returned unexpected value " + val);
    }

    public static void checkPosixShellExitValue(String posixShellProgram,
                                                int expectedExitValue)
        throws Exception
    {
        checkExitValue(new String[] { UnixCommands.sh(), "-c", posixShellProgram },
                       expectedExitValue);
    }

    static final int EXIT_CODE = 5;

    public static void main(String[] args) throws Exception {
        if (! UnixCommands.isUnix) {
            System.out.println("For UNIX only");
            return;
        }
        UnixCommands.ensureCommandsAvailable("sh", "true", "kill");

        String java = join(File.separator, new String []
            { System.getProperty("java.home"), "bin", "java" });

        checkExitValue(new String[]
            { java,
              "-classpath", System.getProperty("test.classes", "."),
              "ExitValue$Run", String.valueOf(EXIT_CODE)
            }, EXIT_CODE);

        checkExitValue(new String[] { UnixCommands.findCommand("true") }, 0);

        checkPosixShellExitValue("exit", 0);

        checkPosixShellExitValue("exit 7", 7);

        int sigoffset = 128;
        checkPosixShellExitValue(UnixCommands.kill() + " -9 $$", sigoffset+9);
    }

    public static class Run {
        public static void main (String[] argv) {
            System.exit(Integer.parseInt(argv[0]));
        }
    }
}

quality98%

¤ Dauer der Verarbeitung: 0.12 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.