test/jdk/sun/util/locale/provider/CheckLoggingFromLocaleProvider.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * 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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 /*
 * @test
 * @bug 8218960
 * @modules java.base/sun.util.locale.provider
 * @modules java.logging
 * @summary Check that no CONFIG messages are logged on instantiating
 *     SimpleDateFormat with the language-only locale.
 * @run main CheckLoggingFromLocaleProvider
 */
import java.text.*;
import java.util.*;
import java.util.logging.*;
import sun.util.locale.provider.*;

public class CheckLoggingFromLocaleProvider extends StreamHandler {

    @Override
    public boolean isLoggable(LogRecord lr) {
        if (lr.getLevel() == Level.CONFIG &&
            lr.getLoggerName().equals(
                LocaleServiceProviderPool.class.getCanonicalName())) {
            throw new RuntimeException("CONFIG message was logged in " +
                lr.getLoggerName() + ". Message: " + lr.getMessage());
        }
        return false;
    }

    public CheckLoggingFromLocaleProvider() {
        setLevel(Level.CONFIG);
        Logger l = LogManager.getLogManager().getLogger("");
        l.setLevel(Level.CONFIG);
        l.addHandler(this);

        new SimpleDateFormat("", Locale.ENGLISH);
    }

    public static void main(String[] args) {
        new CheckLoggingFromLocaleProvider();
    }
}