test/hotspot/jtreg/vmTestbase/nsk/share/GoldChecker.java

/*
 * Copyright (c) 2008, 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.
 */
package nsk.share;

import java.io.*;

public class GoldChecker extends AbstractGoldChecker
{
    private final String goldOutput;

    public GoldChecker(String main_class_name) {
        goldOutput = readGoldStr(main_class_name + ".gold");
    }

    @Override
    protected String getGoldenString() {
        return goldOutput;
    }

    private String readGoldStr(String gold_file_name) {
        RandomAccessFile f;

        try {
            f = new RandomAccessFile(gold_file_name, "r");
        } catch (FileNotFoundException e) {
            throw new TestBug("Unable to open golden file '" + gold_file_name + "' for reading");
        }

        byte[] data;

        try {
            int len = (int)f.length();
            data = new byte[len];
            f.read(data);
        } catch (IOException e) {
            throw new TestBug("Error reading from golden file'" + gold_file_name + "'");
        }

        try {
            f.close();
        } catch (IOException e) {
        }

        try {
            return new String(data, "US-ASCII");
        } catch (UnsupportedEncodingException e) {
            throw new TestFailure( e );
        }
    }

}