/*

 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 *

 */

import java.text.*;

import java.util.*;

import sun.util.*;

import sun.util.resources.*;

public class DateFormatProviderTest extends ProviderTest {

    com.foo.DateFormatProviderImpl dfp = new com.foo.DateFormatProviderImpl();

    List<Locale> availloc = Arrays.asList(DateFormat.getAvailableLocales());

    List<Locale> providerloc = Arrays.asList(dfp.getAvailableLocales());

    List<Locale> jreloc = Arrays.asList(LocaleData.getAvailableLocales());

    public static void main(String[] s) {

        new DateFormatProviderTest();

    }

    DateFormatProviderTest() {

        availableLocalesTest();

        objectValidityTest();

        extendedVariantTest();

        messageFormatTest();

    }

    void availableLocalesTest() {

        Set<Locale> localesFromAPI = new HashSet<Locale>(availloc);

        Set<Locale> localesExpected = new HashSet<Locale>(jreloc);

        localesExpected.addAll(providerloc);

        if (localesFromAPI.equals(localesExpected)) {

            System.out.println("availableLocalesTest passed.");

        } else {

            throw new RuntimeException("availableLocalesTest failed");

        }

    }

    void objectValidityTest() {

        for (Locale target: availloc) {

            // Get the key for the date/time patterns which is

            // specific to each calendar system.

            Calendar cal = Calendar.getInstance(target);

            String key = "DateTimePatterns";

            if (!cal.getClass().getName().equals("java.util.GregorianCalendar")) {

                // e.g., "java.util.JapaneseImperialCalendar.DateTimePatterns"

                key = cal.getClass().getName() + "." + key;

            }

            // pure JRE implementation

            ResourceBundle rb = LocaleData.getDateFormatData(target);

            boolean jreSupportsLocale = jreloc.contains(target);

            // JRE string arrays

            String[] jreDateTimePatterns = null;

            if (jreSupportsLocale) {

                try {

                    jreDateTimePatterns = (String[])rb.getObject(key);

                } catch (MissingResourceException mre) {}

            }

            for (int style = DateFormat.FULL; style <= DateFormat.SHORT; style ++) {

                // result object

                DateFormat result = DateFormat.getDateTimeInstance(style, style, target);

                // provider's object (if any)

                DateFormat providersResult = null;

                if (providerloc.contains(target)) {

                    providersResult = dfp.getDateTimeInstance(style, style, target);

                }

                // JRE's object (if any)

                DateFormat jresResult = null;

                if (jreSupportsLocale) {

                    Object[] dateTimeArgs = {jreDateTimePatterns[style],

                                             jreDateTimePatterns[style + 4]};

                    String pattern = MessageFormat.format(jreDateTimePatterns[8], dateTimeArgs);

                    jresResult = new SimpleDateFormat(pattern, target);

                }

                checkValidity(target, jresResult, providersResult, result, jreSupportsLocale);

            }

        }

    }

    // Check that fallback correctly occurs with locales with variant including '_'s

    // This test assumes that the provider supports the ja_JP_osaka locale, and JRE does not.

    void extendedVariantTest() {

        Locale[] testlocs = {new Locale("ja", "JP", "osaka_extended"),

                             new Locale("ja", "JP", "osaka_extended_further"),

                             new Locale("ja", "JP", "osaka_")};

        for (Locale test: testlocs) {

            DateFormat df = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL, test);

            DateFormat provider = dfp.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL, test);

            if (!df.equals(provider)) {

                throw new RuntimeException("variant fallback failed. test locale: "+test);

            }

        }

    }

    private static final String[] TYPES = {

        "date",

        "time"

    };

    private static final String[] MODIFIERS = {

        "",

        "short",

        "medium", // Same as DEFAULT

        "long",

        "full"

    };

    void messageFormatTest() {

        for (Locale target : providerloc) {

            for (String type : TYPES) {

                for (String modifier : MODIFIERS) {

                    String pattern, expected;

                    if (modifier.equals("")) {

                        pattern = String.format("%s={0,%s}", type, type);

                    } else {

                        pattern = String.format("%s={0,%s,%s}", type, type, modifier);

                    }

                    if (modifier.equals("medium")) {

                        // medium is default.

                        expected = String.format("%s={0,%s}", type, type);

                    } else {

                        expected = pattern;

                    }

                    MessageFormat mf = new MessageFormat(pattern, target);

                    Format[] fmts = mf.getFormats();

                    if (fmts[0] instanceof SimpleDateFormat) {

                        continue;

                    }

                    String toPattern = mf.toPattern();

                    if (!toPattern.equals(expected)) {

                        throw new RuntimeException("messageFormatTest: got '" + toPattern

                                                   + "', expected '" + expected + "'");

                    }

                }

            }

        }

    }

}