test/jdk/java/util/Currency/CheckDataVersion.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
 * 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
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
  Check the consistency between the regression tests and the currency
  data in the JRE. This class is used by other test classes.
 */

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.util.Currency;

class CheckDataVersion {
    static final String datafile = "ISO4217-list-one.txt";
    static final String FILEVERSIONKEY = "FILEVERSION=";
    static final String DATAVERSIONKEY = "DATAVERSION=";
    static String fileVersion;
    static String dataVersion;
    static boolean checked = false;

    static void check() {
        if (!checked) {
            try {
                FileReader fr = new FileReader(new File(System.getProperty("test.src", "."), datafile));
                BufferedReader in = new BufferedReader(fr);
                String line;

                while ((line = in.readLine()) != null) {
                    if (line.startsWith(FILEVERSIONKEY)) {
                        fileVersion = line.substring(FILEVERSIONKEY.length());
                    }
                    if (line.startsWith(DATAVERSIONKEY)) {
                        dataVersion = line.substring(DATAVERSIONKEY.length());
                    }
                    if (fileVersion != null && dataVersion != null) {
                        break;
                    }
                }
                InputStream JREdata = Currency.class.getModule().getResourceAsStream("java/util/currency.data");
                DataInputStream dis = new DataInputStream(JREdata);
                int magic = dis.readInt();
                if (magic != 0x43757244) {
                    throw new RuntimeException("The magic number in the JRE's currency data is incorrect.  Expected: 0x43757244, Got: 0x"+magic);
                }
                int fileVerNumber = dis.readInt();
                int dataVerNumber = dis.readInt();
                if (Integer.parseInt(fileVersion) != fileVerNumber ||
                        Integer.parseInt(dataVersion) != dataVerNumber) {
                    throw new RuntimeException("Test data and JRE's currency data are inconsistent.  test: (file: "+fileVersion+" data: "+dataVersion+"), JRE: (file: "+fileVerNumber+" data: "+dataVerNumber+")");
                }
                System.out.println("test: (file: "+fileVersion+" data: "+dataVersion+"), JRE: (file: "+fileVerNumber+" data: "+dataVerNumber+")");
            } catch (IOException ioe) {
                throw new RuntimeException(
                        "currency.data was not retrieved properly", ioe);
            }
            checked = true;
        }
    }
}