LanguageTagTest.java

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package org.glassfish.jersey.message.internal;

import java.util.Locale;

import org.junit.Test;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalToIgnoringCase;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

/**
 * Tests for {@link LanguageTag} class.
 *
 * @author Michal Gajdos
 */
public class LanguageTagTest {

    @Test
    public void testLanguageCountry() throws Exception {
        _test("en", "gb");
        _test("sk", "SK");
        _test("CZ", "cs");
    }

    @Test(expected = IllegalArgumentException.class)
    public void testLanguageCountryInvalid() throws Exception {
        _test("en", "gbgbgbgbgb");
    }

    @Test
    public void testLanguageRegion() throws Exception {
        _test("es", "419");
    }

    @Test
    public void testEquals() {
        LanguageTag lt1 = new LanguageTag("en", "us");
        LanguageTag lt2 = new LanguageTag("en", "us");

        assertTrue(lt1.equals(lt2));
    }

    @Test
    public void testNonEquals() {
        LanguageTag lt1 = new LanguageTag("en", "us");
        LanguageTag lt2 = new LanguageTag("en", "gb");

        assertFalse(lt1.equals(lt2));
    }

    private void _test(final String primary, final String sub) throws Exception {
        final LanguageTag tag = LanguageTag.valueOf(primary + "-" + sub);

        assertThat(tag.getPrimaryTag(), equalToIgnoringCase(primary));
        assertThat(tag.getSubTags(), equalToIgnoringCase(sub));

        final Locale locale = tag.getAsLocale();

        assertThat(locale.getLanguage(), equalToIgnoringCase(primary));
        assertThat(locale.getCountry(), equalToIgnoringCase(sub));
    }
}