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/*
 * Copyright (C) 2008-2019, Juick
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.juick;

import com.juick.util.DateFormattersHolder;
import org.apache.commons.lang3.RandomUtils;
import org.junit.jupiter.api.Test;

import java.time.Instant;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.TimeZone;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.*;

/**
 * Created by aalexeev on 12/7/16.
 */
public class FormatterTest {

    @Test
    public void forAnyDateFormatterShouldReturnNotEmptyString() {
        Instant ts = Instant.now();

        assertThat(DateFormattersHolder.getMessageFormatterInstance().format(ts), not(emptyOrNullString()));
        assertThat(DateFormattersHolder.getRssFormatterInstance().format(ts), not(emptyOrNullString()));

        ts = Instant.ofEpochMilli(RandomUtils.nextLong(1, Long.MAX_VALUE / 10000));

        assertThat(DateFormattersHolder.getMessageFormatterInstance().format(ts), not(emptyOrNullString()));
        assertThat(DateFormattersHolder.getRssFormatterInstance().format(ts), not(emptyOrNullString()));
    }

    @Test
    public void forConcreteDateShouldReturnCorrectString() {
        Calendar calendar = GregorianCalendar.getInstance();

        calendar.set(2012, 0, 1, 0, 0, 0);
        calendar.setTimeZone(TimeZone.getTimeZone("UTC"));

        Date date = calendar.getTime();

        assertThat(DateFormattersHolder.getMessageFormatterInstance().format(date.toInstant()), equalTo("2012-01-01 00:00:00"));
        assertThat(DateFormattersHolder.getRssFormatterInstance().format(date.toInstant()), equalTo("Sun, 1 Jan 2012 00:00:00"));
        assertThat(DateFormattersHolder.getHttpDateFormatter().format(date.toInstant()), equalTo("Sun, 01 Jan 2012 00:00:00 GMT"));
    }
}