package com.juick;

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

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() throws Exception {
        Date date = new Date();

        assertThat(DateFormattersHolder.getMessageFormatterInstance().format(date), not(isEmptyOrNullString()));
        assertThat(DateFormattersHolder.getRssFormatterInstance().format(date), not(isEmptyOrNullString()));

        date = new Date(RandomUtils.nextLong(1, Long.MAX_VALUE / 10000));

        assertThat(DateFormattersHolder.getMessageFormatterInstance().format(date), not(isEmptyOrNullString()));
        assertThat(DateFormattersHolder.getRssFormatterInstance().format(date), not(isEmptyOrNullString()));
    }

    @Test
    public void forConcreteDateShouldReturnCorrectString() throws Exception {
        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), equalTo("2012-01-01 00:00:00"));
        assertThat(DateFormattersHolder.getRssFormatterInstance().format(date), equalTo("Sun, 1 Jan 2012 00:00:00"));
    }
}