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/*
 * @test
 * @bug 8135061
 * @summary Checks that the Locale.lookup executes properly without throwing
 *          any exception for some specific language ranges
 * @run junit LookupOnValidRangeTest
 */

import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
import java.util.Locale.LanguageRange;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;

public class LookupOnValidRangeTest {

    /**
     * Lookup should run without throwing any exception and return null as
     * the language range does not match with the language tag.
     */
    @Test
    public void lookupReturnNullTest() {
        List<LanguageRange> ranges = LanguageRange.parse("nv");
        Collection<Locale> locales = Collections.singleton(Locale.ENGLISH);
        try {
            Locale match = Locale.lookup(ranges, locales);
            assertNull(match);
        } catch (Exception ex) {
            throw new RuntimeException("[Locale.lookup failed on language"
                    + " range: " + ranges + " and language tags "
                    + locales + "]", ex);
        }
    }

    /**
     * Lookup should run without throwing any exception and return "nv"
     * as the matching tag.
     */
    @Test
    public void lookupReturnValueTest() {
        List<LanguageRange> ranges = LanguageRange.parse("i-navajo");
        Collection<Locale> locales = Collections.singleton(Locale.of("nv"));
        try {
            Locale match = Locale.lookup(ranges, locales);
            assertEquals(match.toLanguageTag(), "nv");
        } catch (Exception ex) {
            throw new RuntimeException("[Locale.lookup failed on language"
                    + " range: " + ranges + " and language tags "
                    + locales + "]", ex);
        }
    }
}