Ziele Untersuchung
mit Columbo Integrität von
Datenbanken Interaktion und
Portierbarkeit Ergonomie der
Schnittstellen

Angebot Produkte Projekt Beratung

Mittel Analytik Modellierung Sprachen Algebra Logik Hardware Denken Kreativität

Zusammenhänge Gesellschaft Wirtschaft Branche Firma


products/sources/formale Sprachen/Java/Openjdk/test/jdk/java/io/InputStream/ (Sun/Oracle ^©) Datei vom 13.11.2022 mit Größe 7 kB

Quelle ReadParams.java Sprache: JAVA

/*
* Copyright (c) 1998, 2018, 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 4008296 4008293 4190090 4193729 4358774
* @summary Check for correct handling of parameters to
*          XXXXInputStream.read(b, off, len).
*
*/

import java.io.*;
import java.util.zip.ZipInputStream;
import java.util.zip.InflaterInputStream;
import java.util.zip.DeflaterOutputStream;

public class ReadParams {

    /* check for correct handling of different values of off and len */
    public static void doTest(InputStream in) throws Exception {

        int off[] = {-1, -1,  0, 0, 33, 33, 0, 32, 32, 4, 1, 0,  -1,
                     Integer.MAX_VALUE, 1, Integer.MIN_VALUE,
                     Integer.MIN_VALUE, 1};
        int len[] = {-1,  0, -1, 33, 0, 4, 32, 0, 4, 16, 31, 0,
                     Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE,
                     1, -1, Integer.MIN_VALUE};
        boolean results[] = { false,  false,  false, false, false, false,
                              true, true, false, true, true, true,  false,
                              false, false, false, false, false};
        int numCases = off.length;
        byte b[] = new byte[32];
        int numBad = 0;

        for(int i = 0; i < numCases; i++) {
            try {
                in.read(b , off[i] , len[i]);
            } catch (IndexOutOfBoundsException aiobe) {
                if (results[i]) {
                    System.err.println("Error:IndexOutOfBoundsException thrown"+
                                       " for read(b, " + off[i] + " " + len[i] +
                                       " ) on " + in + "\nb.length = 32");
                    numBad++;
                } else {
                    /* System.err.println("PassE: " + off[i] + " " + len[i]); */
                }
                continue;
            } catch (OutOfMemoryError ome) {
                System.err.println("Error: OutOfMemoryError in read(b, " +
                                   off[i] + " " + len[i] + " ) on " + in +
                                   "\nb.length = 32");
                numBad++;
                continue;
            }
            if (!results[i]) {
                System.err.println("Error:No IndexOutOfBoundsException thrown"+
                                   " for read(b, " + off[i] + " " + len[i] +
                                   " ) on " + in + "\nb.length = 32");
                numBad++;
            } else {
                /* System.err.println("Pass: " + off[i] + " " + len[i]); */
            }
        }

        if (numBad > 0) {
            throw new RuntimeException(in + " Failed " + numBad + " cases");
        } else {
            System.err.println("Successfully completed bounds tests on " + in);
        }
    }

    /* check for correct handling of null b */
    public static void doTest1(InputStream in) throws Exception {
        byte b[] = null;
        try {
            in.read(b, 0, 32);
        } catch (NullPointerException npe) {
            System.err.println("SuccessFully completed null b test on " + in);
            return;
        }
        throw new RuntimeException(in + " Failed null b test");
    }

    public static void main(String args[]) throws Exception{
        /* initialise stuff */
        File fn = new File("x.ReadBounds");
        FileOutputStream fout = new FileOutputStream(fn);
        for (int i = 0; i < 32; i++) {
            fout.write(i);
        }
        fout.close();

        byte b[] = new byte[64];
        for(int i = 0; i < 64; i++) {
            b[i] = 1;
        }

        /* test all input streams */
        FileInputStream fis = new FileInputStream(fn);
        doTest(fis);
        doTest1(fis);
        fis.close();

        BufferedInputStream bis =
            new BufferedInputStream(new MyInputStream(1024));
        doTest(bis);
        doTest1(bis);
        bis.close();

        ByteArrayInputStream bais = new ByteArrayInputStream(b);
        doTest(bais);
        doTest1(bais);
        bais.close();

        FileOutputStream fos = new FileOutputStream(fn);
        ObjectOutputStream oos = new ObjectOutputStream(fos);
        oos.writeInt(12345);
        oos.writeObject("Today");
        oos.writeObject(new Integer(32));
        oos.close();
        ObjectInputStream ois = new ObjectInputStream(new FileInputStream(fn));
        doTest(ois);
        doTest1(ois);
        ois.close();

        DataInputStream dis = new DataInputStream(new MyInputStream(1024));
        doTest(dis);
        doTest1(dis);
        dis.close();

        LineNumberInputStream lis =
            new LineNumberInputStream(new MyInputStream(1024));
        doTest(lis);
        doTest1(lis);
        lis.close();

        PipedOutputStream pos = new PipedOutputStream();
        PipedInputStream pis = new PipedInputStream();
        pos.connect(pis);
        pos.write(b, 0, 64);
        doTest(pis);
        doTest1(pis);
        pis.close();

        PushbackInputStream pbis =
            new PushbackInputStream(new MyInputStream(1024));
        doTest(pbis);
        doTest1(pbis);
        pbis.close();

        StringBufferInputStream sbis =
            new StringBufferInputStream(new String(b));
        doTest(sbis);
        doTest1(sbis);
        sbis.close();

        SequenceInputStream sis =
            new SequenceInputStream(new MyInputStream(1024),
                                    new MyInputStream(1024));
        doTest(sis);
        doTest1(sis);
        sis.close();

        ZipInputStream zis = new ZipInputStream(new FileInputStream(fn));
        doTest(zis);
        doTest1(zis);
        zis.close();

        byte[] data = new byte[256];
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DeflaterOutputStream dos = new DeflaterOutputStream(bos);
        dos.write(data, 0, data.length);
        dos.close();
        InflaterInputStream ifs = new InflaterInputStream
            (new ByteArrayInputStream(bos.toByteArray()));
        doTest(ifs);
        doTest1(ifs);
        ifs.close();

        InputStream nis = InputStream.nullInputStream();
        doTest(nis);
        doTest1(nis);
        nis.close();

        /* cleanup */
        fn.delete();
    }
}

/* An InputStream class used in the above tests */
class MyInputStream extends InputStream {

    private int readctr = 0;
    private long endoffile;

    public MyInputStream(long endoffile) {
        this.endoffile = endoffile;
    }

    public int read() {
        if (readctr == endoffile) {
            return -1;
        }
        else {
            readctr++;
            return 0;
        }
    }

    public int available() { return 0; }
}

quality88%

¤ Dauer der Verarbeitung: 0.2 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.