package ch.qos.logback.core.util;

import static org.junit.Assert.assertEquals;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

import org.junit.Before;
import org.junit.Test;

public class CachingFotmatterTest {

  final static String DATE_PATTERN = "yyyy-MM-dd'T'HH:mm";
  
  SimpleDateFormat sdf = new SimpleDateFormat(DATE_PATTERN);
  TimeZone perthTZ = TimeZone.getTimeZone("Australia/Perth");
  TimeZone utcTZ = TimeZone.getTimeZone("UTC");
  
  @Before
  public void setUp() {
    sdf.setTimeZone(utcTZ);
  }
  
  @Test
  public void timeZoneIsTakenIntoAccount() throws ParseException {

    CachingDateFormatter cdf = new CachingDateFormatter(DATE_PATTERN);
    TimeZone perthTZ = TimeZone.getTimeZone("Australia/Perth");
    cdf.setTimeZone(perthTZ);

    Date march26_2015_0949_UTC = sdf.parse("2015-03-26T09:49");
    System.out.print(march26_2015_0949_UTC);
    
    String result = cdf.format(march26_2015_0949_UTC.getTime());
    // AWST (Perth) is 8 hours ahead of UTC
    assertEquals("2015-03-26T17:49", result);
  }
}
