AssureTzdataVersion.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
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 8060126
 * @summary Make sure that the tzdata version matches between the run-time and tests.
 */
import java.time.zone.ZoneRules;
import java.time.zone.ZoneRulesProvider;
import java.util.NavigableMap;

public class AssureTzdataVersion {
    public static void main(String... args) throws Exception {
        // get the tzdata version for the run-time
        NavigableMap<String, ZoneRules> map;
        map = ZoneRulesProvider.getVersions("America/Los_Angeles");
        if (map.isEmpty()) {
            throw new RuntimeException("Unknown runtime tzdata version");
        }
        String runtime = map.lastEntry().getKey();

        // get the tzdata version for regression tests
        String testdata = null;
        try (TextFileReader textreader = new TextFileReader("VERSION")) {
            testdata = textreader.getLine().substring("tzdata".length());
        }
        if (!testdata.equals(runtime)) {
            throw new RuntimeException("tzdata versions don't match: run-time=" + runtime
                                       + ", tests=" + testdata);
        }
    }
}