test/jdk/java/util/Currency/Bug6807534.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @bug 6807534
 * @summary check whether the default implementation of
 *    CurrencNameProvider.getDisplayName(String, Locale) throws appropriate
 *    exceptions when necessary.
 */

import java.util.Locale;
import java.util.spi.CurrencyNameProvider;

public class Bug6807534 {

    static final CurrencyNameProvider cnp = new CurrencyNameProviderImpl();

    public static void main(String[] args) throws Exception {
        // test for NullPointerException (currencyCode)
        try {
            cnp.getDisplayName(null, Locale.US);
            throwException("NPE was not thrown with null currencyCode");
        } catch (NullPointerException npe) {}

        // test for NullPointerException (locale)
        try {
            cnp.getDisplayName("USD", null);
            throwException("NPE was not thrown with null locale");
        } catch (NullPointerException npe) {}

        // test for IllegalArgumentException (illegal currencyCode)
        try {
            cnp.getDisplayName("INVALID", Locale.US);
            throwException("IllegalArgumentException was not thrown with invalid currency code");
        } catch (IllegalArgumentException iae) {}
        try {
            cnp.getDisplayName("inv", Locale.US);
            throwException("IllegalArgumentException was not thrown with invalid currency code");
        } catch (IllegalArgumentException iae) {}

        // test for IllegalArgumentException (non-supported locale)
        try {
            cnp.getDisplayName("USD", Locale.JAPAN);
            throwException("IllegalArgumentException was not thrown with non-supported locale");
        } catch (IllegalArgumentException iae) {}
    }

    static void throwException(String msg) {
        throw new RuntimeException("test failed. "+msg);
    }

    static class CurrencyNameProviderImpl extends CurrencyNameProvider {
        // dummy implementation
        public String getSymbol(String currencyCode, Locale locale) {
            return "";
        }

        public Locale[] getAvailableLocales() {
            Locale[] avail = new Locale[1];
            avail[0] = Locale.US;
            return avail;
        }
    }
}