test/jdk/java/lang/RuntimeTests/exec/Status.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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/* @test
 * @bug 4763362
 * @summary Ensure that Process.waitFor returns the correct status code
 *          even for very short-running subprocesses
 * @requires (os.family == "linux")
 */


public class Status {

    private static int N = 160;

    public static void main(String args[])
        throws Exception
    {
        UnixCommands.ensureCommandsAvailable("false");

        final String falseCmd = UnixCommands.findCommand("false");
        for (int i = 0; i < N; i++) {
            Process p = Runtime.getRuntime().exec(falseCmd);
            int s = p.waitFor();
            System.out.print(s);
            System.out.print(' ');
            if (s != 1) {
                System.out.println();
                throw new Exception("Wrong status");
            }
        }
        System.out.println();
    }

}