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Android example source code file (LocaleTest.java)

This example Android source code file (LocaleTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, central, charset, dateformatsymbols, euc-jp, eur, exception, ibm-37, klingon, locale, localetest, monday, string, test, text, time, us, util

The LocaleTest.java Android example source code

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.core;

import junit.framework.TestCase;

import java.nio.charset.Charset;
import java.text.DateFormatSymbols;
import java.util.Calendar;
import java.util.Currency;
import java.util.Locale;
import java.util.Set;
import java.util.TimeZone;
import android.test.suitebuilder.annotation.MediumTest;
import android.test.suitebuilder.annotation.SmallTest;
import android.test.suitebuilder.annotation.LargeTest;
import android.test.suitebuilder.annotation.Suppress;

/**
 * Test some locale-dependent stuff for Android. This test mainly ensures that
 * our ICU configuration is correct and contains all the needed locales and
 * resource bundles. 
 */
public class LocaleTest extends TestCase {

    // Test basic Locale infrastructure.
    @SmallTest
    public void testLocale() throws Exception {
        Locale locale = new Locale("en");
        assertEquals("en", locale.toString());

        locale = new Locale("en", "US");
        assertEquals("en_US", locale.toString());

        locale = new Locale("en", "", "POSIX");
        assertEquals("en__POSIX", locale.toString());

        locale = new Locale("en", "US", "POSIX");
        assertEquals("en_US_POSIX", locale.toString());
    }

    /*
     * Tests some must-have locales. TODO: Add back "de". See discussion
     * immediately below this method.
     */
    @LargeTest
    public void testResourceBundles() throws Exception {
        Locale eng = new Locale("en", "US");
        DateFormatSymbols engSymbols = new DateFormatSymbols(eng);
        
        //Locale deu = new Locale("de", "DE");
        //DateFormatSymbols deuSymbols = new DateFormatSymbols(deu);
        
        TimeZone berlin = TimeZone.getTimeZone("Europe/Berlin");
        
        assertEquals("January", engSymbols.getMonths()[0]);
        //assertEquals("Januar", deuSymbols.getMonths()[0]);

        assertEquals("Sunday", engSymbols.getWeekdays()[Calendar.SUNDAY]);
        //assertEquals("Sonntag", deuSymbols.getWeekdays()[Calendar.SUNDAY]);
        
        assertEquals("Central European Time",
                berlin.getDisplayName(false, TimeZone.LONG, eng));
        assertEquals("Central European Summer Time",
                berlin.getDisplayName(true, TimeZone.LONG, eng));

        //assertEquals("Mitteleurop\u00E4ische Zeit",
        //        berlin.getDisplayName(false, TimeZone.LONG, deu));
        //assertEquals("Mitteleurop\u00E4ische Sommerzeit",
        //        berlin.getDisplayName(true, TimeZone.LONG, deu));
        
        assertTrue(engSymbols.getZoneStrings().length > 100);
    }

    /*
     * Disabled version of the above test. The version above omits
     * checks for stuff in the "de" locale, because we stripped that
     * out as part of the flash reduction effort (so that we could
     * still ship on Dream). We expect to have a baseline target that
     * includes a large enough system partition to include "de"
     * immediately after the last official release for Dream (whenever
     * that may be).
     * 
    // Test some must-have locales.
    @LargeTest
    public void testResourceBundles() throws Exception {
        Locale eng = new Locale("en", "US");
        DateFormatSymbols engSymbols = new DateFormatSymbols(eng);
        
        Locale deu = new Locale("de", "DE");
        DateFormatSymbols deuSymbols = new DateFormatSymbols(deu);
        
        TimeZone berlin = TimeZone.getTimeZone("Europe/Berlin");
        
        assertEquals("January", engSymbols.getMonths()[0]);
        assertEquals("Januar", deuSymbols.getMonths()[0]);

        assertEquals("Sunday", engSymbols.getWeekdays()[Calendar.SUNDAY]);
        assertEquals("Sonntag", deuSymbols.getWeekdays()[Calendar.SUNDAY]);
        
        assertEquals("Central European Time",
                berlin.getDisplayName(false, TimeZone.LONG, eng));
        assertEquals("Central European Summer Time",
                berlin.getDisplayName(true, TimeZone.LONG, eng));

        assertEquals("Mitteleurop\u00E4ische Zeit",
                berlin.getDisplayName(false, TimeZone.LONG, deu));
        assertEquals("Mitteleurop\u00E4ische Sommerzeit",
                berlin.getDisplayName(true, TimeZone.LONG, deu));
        
        assertTrue(engSymbols.getZoneStrings().length > 100);
    }
    */

    // This one makes sure we have all necessary locales installed.
    // Suppress this flaky test for now.
    @Suppress
    public void testICULocales() {
        String[] locales = new String[] {
                // List of locales currently required for Android.
                "en_US", "es_US", "en_GB", "fr_FR", "de_DE", "de_AT", "cs_CZ", "nl_NL" };
        
        String[] mondays = new String[] {
                "Monday", "lunes", "Monday", "lundi", "Montag", "Montag", "pond\u011bl\u00ed", "maandag" };
        
        String[] currencies = new String[] {
                "USD", "USD", "GBP", "EUR", "EUR", "EUR", "CZK", "EUR"};

        for (int i = 0; i < locales.length; i++) {
            Locale l = new Locale(locales[i].substring(0, 2), locales[i].substring(3));
            
            // Check language part of locale.
            DateFormatSymbols d = new DateFormatSymbols(l);
            assertEquals("Monday name for " + locales[i] + " must match",
                    mondays[i], d.getWeekdays()[2]);
            
            // Check country part of locale.
            Currency c = Currency.getInstance(l);
            assertEquals("Currency code for " + locales[i] + " must match",
                    currencies[i], c.getCurrencyCode());
        }
    }

    // Regression test for 1118570: Create test cases for tracking ICU config
    // changes. This one makes sure we have the necessary converters installed
    // and don't lose the changes to the converter alias table.
    @MediumTest
    public void testICUConverters() {
        // List of encodings currently required for Android.
        String[] encodings = new String[] {
                // Encoding required by the language specification.
                "US-ASCII",
                "UTF-8",
                "UTF-16",
                "UTF-16BE",
                "UTF-16LE",
                "ISO-8859-1",
                
                // Additional encodings included in standard ICU
                "ISO-8859-2",
                "ISO-8859-3",
                "ISO-8859-4",
                "ISO-8859-5",
                "ISO-8859-6",
                "ISO-8859-7",
                "ISO-8859-8",
                "ISO-8859-8-I",
                "ISO-8859-9",
                "ISO-8859-10", 
                "ISO-8859-11", 
                "ISO-8859-13",
                "ISO-8859-14", 
                "ISO-8859-15",
                "ISO-8859-16", 
                "ISO-2022-JP",
                "Windows-950",
                "Windows-1250",
                "Windows-1251",
                "Windows-1252",
                "Windows-1253",
                "Windows-1254",
                "Windows-1255",
                "Windows-1256",
                "Windows-1257",
                "Windows-1258",              
                "Big5",
                "CP864",
                "CP874",
                "EUC-CN",
                "EUC-JP",
                "KOI8-R",
                "Macintosh",
                "GBK",
                "GB2312",
                "EUC-KR",
                
                // Additional encoding not included in standard ICU.
                "GSM0338" };
        
        for (int i = 0; i < encodings.length; i++) {
            assertTrue("Charset " + encodings[i] + " must be supported",
                    Charset.isSupported(encodings[i]));
            
            Charset cs = Charset.forName(encodings[i]);
            android.util.Log.d("LocaleTest", cs.name());
            
            Set<String> aliases = cs.aliases();
            for (String s: aliases) {
                android.util.Log.d("LocaleTest", " - " + s);
            }
        }
        
        // Test for valid encoding that is not included in Android. IBM-37 is
        // a perfect candidate for this, as it is being used for mainframes and
        // thus somewhat out of the scope of Android.
        assertFalse("Charset IBM-37 must not be supported",
                Charset.isSupported("IBM-37"));

        // Test for a bogus encoding.
        assertFalse("Charset KLINGON must not be supported",
                Charset.isSupported("KLINGON"));
        
        // Make sure our local change to the real translation table used for
        // EUC-JP doesn't get lost.
        Charset cs = Charset.forName("EUC-JP");
        assertTrue("EUC-JP must use 'ibm-954_P101-2007'", cs.aliases().contains("ibm-954_P101-2007"));
    }
    
}

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