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Android example source code file (TimeUtilsTest.java)

This example Android source code file (TimeUtilsTest.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

america/anchorage, america/chicago, america/denver, america/los_angeles, america/new_york, android, calendar, dst, eastern, exception, hawaii, mountain, pacific/honolulu, string, timezone, util, utilities, utils

The TimeUtilsTest.java Android example source code

/*
 * Copyright (C) 2008 Google Inc.
 *
 * 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.util;

import junit.framework.TestCase;

import android.util.TimeUtils;

import java.util.Calendar;
import java.util.TimeZone;

/**
 * TimeUtilsTest tests the time zone guesser.
 */
public class TimeUtilsTest extends TestCase {
    public void testMainstream() throws Exception {
        String[] mainstream = new String[] {
            "America/New_York", // Eastern
            "America/Chicago", // Central
            "America/Denver", // Mountain
            "America/Los_Angeles", // Pacific
            "America/Anchorage", // Alaska
            "Pacific/Honolulu", // Hawaii, no DST
        };

        for (String name : mainstream) {
            TimeZone tz = TimeZone.getTimeZone(name);
            Calendar c = Calendar.getInstance(tz);
            TimeZone guess;

            c.set(2008, Calendar.OCTOBER, 20, 12, 00, 00);
            guess = guess(c, "us");
            assertEquals(name, guess.getID());

            c.set(2009, Calendar.JANUARY, 20, 12, 00, 00);
            guess = guess(c, "us");
            assertEquals(name, guess.getID());
        }
    }

    public void testWeird() throws Exception {
        String[] weird = new String[] {
            "America/Phoenix", // Mountain, no DST
            "America/Adak", // Same as Hawaii, but with DST
        };

        for (String name : weird) {
            TimeZone tz = TimeZone.getTimeZone(name);
            Calendar c = Calendar.getInstance(tz);
            TimeZone guess;

            c.set(2008, Calendar.OCTOBER, 20, 12, 00, 00);
            guess = guess(c, "us");
            assertEquals(name, guess.getID());
        }
    }

    public void testOld() throws Exception {
        String[] old = new String[] {
            "America/Indiana/Indianapolis", // Eastern, formerly no DST
        };

        for (String name : old) {
            TimeZone tz = TimeZone.getTimeZone(name);
            Calendar c = Calendar.getInstance(tz);
            TimeZone guess;

            c.set(2005, Calendar.OCTOBER, 20, 12, 00, 00);
            guess = guess(c, "us");
            assertEquals(name, guess.getID());
        }
    }

    public void testWorld() throws Exception {
        String[] world = new String[] {
            "ad", "Europe/Andorra",
            "ae", "Asia/Dubai",
            "af", "Asia/Kabul",
            "ag", "America/Antigua",
            "ai", "America/Anguilla",
            "al", "Europe/Tirane",
            "am", "Asia/Yerevan",
            "an", "America/Curacao",
            "ao", "Africa/Luanda",
            "aq", "Antarctica/McMurdo",
            "aq", "Antarctica/DumontDUrville",
            "aq", "Antarctica/Casey",
            "aq", "Antarctica/Davis",
            "aq", "Antarctica/Mawson",
            "aq", "Antarctica/Syowa",
            "aq", "Antarctica/Rothera",
            "aq", "Antarctica/Palmer",
            "ar", "America/Argentina/Buenos_Aires",
            "as", "Pacific/Pago_Pago",
            "at", "Europe/Vienna",
            "au", "Australia/Sydney",
            "au", "Australia/Adelaide",
            "au", "Australia/Perth",
            "au", "Australia/Eucla",
            "aw", "America/Aruba",
            "ax", "Europe/Mariehamn",
            "az", "Asia/Baku",
            "ba", "Europe/Sarajevo",
            "bb", "America/Barbados",
            "bd", "Asia/Dhaka",
            "be", "Europe/Brussels",
            "bf", "Africa/Ouagadougou",
            "bg", "Europe/Sofia",
            "bh", "Asia/Bahrain",
            "bi", "Africa/Bujumbura",
            "bj", "Africa/Porto-Novo",
            "bm", "Atlantic/Bermuda",
            "bn", "Asia/Brunei",
            "bo", "America/La_Paz",
            "br", "America/Noronha",
            "br", "America/Sao_Paulo",
            "br", "America/Manaus",
            "bs", "America/Nassau",
            "bt", "Asia/Thimphu",
            "bw", "Africa/Gaborone",
            "by", "Europe/Minsk",
            "bz", "America/Belize",
            "ca", "America/St_Johns",
            "ca", "America/Halifax",
            "ca", "America/Toronto",
            "ca", "America/Winnipeg",
            "ca", "America/Edmonton",
            "ca", "America/Vancouver",
            "cc", "Indian/Cocos",
            "cd", "Africa/Lubumbashi",
            "cd", "Africa/Kinshasa",
            "cf", "Africa/Bangui",
            "cg", "Africa/Brazzaville",
            "ch", "Europe/Zurich",
            "ci", "Africa/Abidjan",
            "ck", "Pacific/Rarotonga",
            "cl", "America/Santiago",
            "cl", "Pacific/Easter",
            "cm", "Africa/Douala",
            "cn", "Asia/Shanghai",
            "co", "America/Bogota",
            "cr", "America/Costa_Rica",
            "cu", "America/Havana",
            "cv", "Atlantic/Cape_Verde",
            "cx", "Indian/Christmas",
            "cy", "Asia/Nicosia",
            "cz", "Europe/Prague",
            "de", "Europe/Berlin",
            "dj", "Africa/Djibouti",
            "dk", "Europe/Copenhagen",
            "dm", "America/Dominica",
            "do", "America/Santo_Domingo",
            "dz", "Africa/Algiers",
            "ec", "America/Guayaquil",
            "ec", "Pacific/Galapagos",
            "ee", "Europe/Tallinn",
            "eg", "Africa/Cairo",
            "eh", "Africa/El_Aaiun",
            "er", "Africa/Asmara",
            "es", "Europe/Madrid",
            "es", "Atlantic/Canary",
            "et", "Africa/Addis_Ababa",
            "fi", "Europe/Helsinki",
            "fj", "Pacific/Fiji",
            "fk", "Atlantic/Stanley",
            "fm", "Pacific/Ponape",
            "fm", "Pacific/Truk",
            "fo", "Atlantic/Faroe",
            "fr", "Europe/Paris",
            "ga", "Africa/Libreville",
            "gb", "Europe/London",
            "gd", "America/Grenada",
            "ge", "Asia/Tbilisi",
            "gf", "America/Cayenne",
            "gg", "Europe/Guernsey",
            "gh", "Africa/Accra",
            "gi", "Europe/Gibraltar",
            "gl", "America/Danmarkshavn",
            "gl", "America/Scoresbysund",
            "gl", "America/Godthab",
            "gl", "America/Thule",
            "gm", "Africa/Banjul",
            "gn", "Africa/Conakry",
            "gp", "America/Guadeloupe",
            "gq", "Africa/Malabo",
            "gr", "Europe/Athens",
            "gs", "Atlantic/South_Georgia",
            "gt", "America/Guatemala",
            "gu", "Pacific/Guam",
            "gw", "Africa/Bissau",
            "gy", "America/Guyana",
            "hk", "Asia/Hong_Kong",
            "hn", "America/Tegucigalpa",
            "hr", "Europe/Zagreb",
            "ht", "America/Port-au-Prince",
            "hu", "Europe/Budapest",
            "id", "Asia/Jayapura",
            "id", "Asia/Makassar",
            "id", "Asia/Jakarta",
            "ie", "Europe/Dublin",
            "il", "Asia/Jerusalem",
            "im", "Europe/Isle_of_Man",
            "in", "Asia/Calcutta",
            "io", "Indian/Chagos",
            "iq", "Asia/Baghdad",
            "ir", "Asia/Tehran",
            "is", "Atlantic/Reykjavik",
            "it", "Europe/Rome",
            "je", "Europe/Jersey",
            "jm", "America/Jamaica",
            "jo", "Asia/Amman",
            "jp", "Asia/Tokyo",
            "ke", "Africa/Nairobi",
            "kg", "Asia/Bishkek",
            "kh", "Asia/Phnom_Penh",
            "ki", "Pacific/Kiritimati",
            "ki", "Pacific/Enderbury",
            "ki", "Pacific/Tarawa",
            "km", "Indian/Comoro",
            "kn", "America/St_Kitts",
            "kp", "Asia/Pyongyang",
            "kr", "Asia/Seoul",
            "kw", "Asia/Kuwait",
            "ky", "America/Cayman",
            "kz", "Asia/Almaty",
            "kz", "Asia/Aqtau",
            "la", "Asia/Vientiane",
            "lb", "Asia/Beirut",
            "lc", "America/St_Lucia",
            "li", "Europe/Vaduz",
            "lk", "Asia/Colombo",
            "lr", "Africa/Monrovia",
            "ls", "Africa/Maseru",
            "lt", "Europe/Vilnius",
            "lu", "Europe/Luxembourg",
            "lv", "Europe/Riga",
            "ly", "Africa/Tripoli",
            "ma", "Africa/Casablanca",
            "mc", "Europe/Monaco",
            "md", "Europe/Chisinau",
            "me", "Europe/Podgorica",
            "mg", "Indian/Antananarivo",
            "mh", "Pacific/Majuro",
            "mk", "Europe/Skopje",
            "ml", "Africa/Bamako",
            "mm", "Asia/Rangoon",
            "mn", "Asia/Choibalsan",
            "mn", "Asia/Hovd",
            "mo", "Asia/Macau",
            "mp", "Pacific/Saipan",
            "mq", "America/Martinique",
            "mr", "Africa/Nouakchott",
            "ms", "America/Montserrat",
            "mt", "Europe/Malta",
            "mu", "Indian/Mauritius",
            "mv", "Indian/Maldives",
            "mw", "Africa/Blantyre",
            "mx", "America/Mexico_City",
            "mx", "America/Chihuahua",
            "mx", "America/Tijuana",
            "my", "Asia/Kuala_Lumpur",
            "mz", "Africa/Maputo",
            "na", "Africa/Windhoek",
            "nc", "Pacific/Noumea",
            "ne", "Africa/Niamey",
            "nf", "Pacific/Norfolk",
            "ng", "Africa/Lagos",
            "ni", "America/Managua",
            "nl", "Europe/Amsterdam",
            "no", "Europe/Oslo",
            "np", "Asia/Katmandu",
            "nr", "Pacific/Nauru",
            "nu", "Pacific/Niue",
            "nz", "Pacific/Auckland",
            "nz", "Pacific/Chatham",
            "om", "Asia/Muscat",
            "pa", "America/Panama",
            "pe", "America/Lima",
            "pf", "Pacific/Gambier",
            "pf", "Pacific/Marquesas",
            "pf", "Pacific/Tahiti",
            "pg", "Pacific/Port_Moresby",
            "ph", "Asia/Manila",
            "pk", "Asia/Karachi",
            "pl", "Europe/Warsaw",
            "pm", "America/Miquelon",
            "pn", "Pacific/Pitcairn",
            "pr", "America/Puerto_Rico",
            "ps", "Asia/Gaza",
            "pt", "Europe/Lisbon",
            "pt", "Atlantic/Azores",
            "pw", "Pacific/Palau",
            "py", "America/Asuncion",
            "qa", "Asia/Qatar",
            "re", "Indian/Reunion",
            "ro", "Europe/Bucharest",
            "rs", "Europe/Belgrade",
            "ru", "Asia/Kamchatka",
            "ru", "Asia/Magadan",
            "ru", "Asia/Vladivostok",
            "ru", "Asia/Yakutsk",
            "ru", "Asia/Irkutsk",
            "ru", "Asia/Krasnoyarsk",
            "ru", "Asia/Novosibirsk",
            "ru", "Asia/Yekaterinburg",
            "ru", "Europe/Samara",
            "ru", "Europe/Moscow",
            "ru", "Europe/Kaliningrad",
            "rw", "Africa/Kigali",
            "sa", "Asia/Riyadh",
            "sb", "Pacific/Guadalcanal",
            "sc", "Indian/Mahe",
            "sd", "Africa/Khartoum",
            "se", "Europe/Stockholm",
            "sg", "Asia/Singapore",
            "sh", "Atlantic/St_Helena",
            "si", "Europe/Ljubljana",
            "sj", "Arctic/Longyearbyen",
            "sk", "Europe/Bratislava",
            "sl", "Africa/Freetown",
            "sm", "Europe/San_Marino",
            "sn", "Africa/Dakar",
            "so", "Africa/Mogadishu",
            "sr", "America/Paramaribo",
            "st", "Africa/Sao_Tome",
            "sv", "America/El_Salvador",
            "sy", "Asia/Damascus",
            "sz", "Africa/Mbabane",
            "tc", "America/Grand_Turk",
            "td", "Africa/Ndjamena",
            "tf", "Indian/Kerguelen",
            "tg", "Africa/Lome",
            "th", "Asia/Bangkok",
            "tj", "Asia/Dushanbe",
            "tk", "Pacific/Fakaofo",
            "tl", "Asia/Dili",
            "tm", "Asia/Ashgabat",
            "tn", "Africa/Tunis",
            "to", "Pacific/Tongatapu",
            "tr", "Europe/Istanbul",
            "tt", "America/Port_of_Spain",
            "tv", "Pacific/Funafuti",
            "tw", "Asia/Taipei",
            "tz", "Africa/Dar_es_Salaam",
            "ua", "Europe/Kiev",
            "ug", "Africa/Kampala",
            "um", "Pacific/Wake",
            "um", "Pacific/Johnston",
            "um", "Pacific/Midway",
            "us", "America/New_York",
            "us", "America/Chicago",
            "us", "America/Denver",
            "us", "America/Los_Angeles",
            "us", "America/Anchorage",
            "us", "Pacific/Honolulu",
            "uy", "America/Montevideo",
            "uz", "Asia/Tashkent",
            "va", "Europe/Vatican",
            "vc", "America/St_Vincent",
            "ve", "America/Caracas",
            "vg", "America/Tortola",
            "vi", "America/St_Thomas",
            "vn", "Asia/Saigon",
            "vu", "Pacific/Efate",
            "wf", "Pacific/Wallis",
            "ws", "Pacific/Apia",
            "ye", "Asia/Aden",
            "yt", "Indian/Mayotte",
            "za", "Africa/Johannesburg",
            "zm", "Africa/Lusaka",
            "zw", "Africa/Harare",
        };

        for (int i = 0; i < world.length; i += 2) {
            String country = world[i];
            String name = world[i + 1];

            TimeZone tz = TimeZone.getTimeZone(name);
            Calendar c = Calendar.getInstance(tz);
            TimeZone guess;

            c.set(2009, Calendar.JULY, 20, 12, 00, 00);
            guess = guess(c, country);
            assertEquals(name, guess.getID());

            c.set(2009, Calendar.JANUARY, 20, 12, 00, 00);
            guess = guess(c, country);
            assertEquals(name, guess.getID());
        }
    }

    public void testWorldWeird() throws Exception {
        String[] world = new String[] {
            // Distinguisable from Sydney only when DST not in effect
            "au", "Australia/Lord_Howe",
        };

        for (int i = 0; i < world.length; i += 2) {
            String country = world[i];
            String name = world[i + 1];

            TimeZone tz = TimeZone.getTimeZone(name);
            Calendar c = Calendar.getInstance(tz);
            TimeZone guess;

            c.set(2009, Calendar.JULY, 20, 12, 00, 00);
            guess = guess(c, country);
            assertEquals(name, guess.getID());
        }
    }

    private static TimeZone guess(Calendar c, String country) {
        return TimeUtils.getTimeZone(c.get(c.ZONE_OFFSET) + c.get(c.DST_OFFSET),
                                     c.get(c.DST_OFFSET) != 0,
                                     c.getTimeInMillis(),
                                     country);
    }
}

Other Android examples (source code examples)

Here is a short list of links related to this Android TimeUtilsTest.java source code file:

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