<?php
// $Id: date_timezone.test,v 1.4 2008-01-04 14:52:16 karens Exp $
/**
 * Test PHP 4 Timezone Conversion
 */
class PHP4Dates extends DrupalTestCase {
  function get_info() {
    return array('name' => t('PHP 4 date and timezone handling'), 'desc' => t('Test PHP 4 versions of date_create(), timezone_open(), date_timezone_set(), etc. Tests only provide meaningful results when run in PHP 4 environment.') , 'group' => 'Date tests');
  }

  function testPHP4Timezone() {
    include_once('./'. drupal_get_path('module', 'date_php4') .'/date_php4.inc');

    $date = date_create('2007-03-11 01:59:59');
    $this->assertEqual($date->value, '2007-03-11 01:59:59', 'Create the a date 2007-03-11 01:59:59');
    $date = date_create('2007-03-11 01:59:59', timezone_open('America/Chicago'));
    $this->assertEqual($date->timezone, 'America/Chicago', 'Create the timezone America/Chicago');
    $format = date_format($date, 'm/d/Y g:i a');
    $this->assertEqual($format, '03/11/2007 1:59 am', 'Test date_format()');

    $date = date_create('2007-01-01', timezone_open('US/Central'));
    $result = date_format(date_modify($date, '+3 month'), 'Y-m-d');
    $this->assertEqual('2007-04-01', $result, "Check date_modify('2007-01-01', '+3 month'), should be '2007-04-01'");

    $date = date_create('2007-01-01', timezone_open('US/Central'));
    $result = date_format(date_modify($date, '-1 month'), 'Y-m-d');
    $this->assertEqual('2006-12-01', $result, "Check date_modify('2007-01-01', '-1 month'), should be '2006-12-01'");

    $date = date_create('2007-01-01', timezone_open('US/Central'));
    $result = date_format(date_modify($date, '-1 day'), 'Y-m-d');
    $this->assertEqual('2006-12-31', $result, "Check date_modify('2007-01-01', '-1 day'), should be '2006-12-31'");

    $date = date_create('2005-02-28', timezone_open('US/Central'));
    $result = date_format(date_modify($date, '+1 day'), 'Y-m-d');
    $this->assertEqual('2005-03-01', $result, "Check date_modify('2005-02-28', '+1 day'), should be '2005-03-01'");

    $date = date_create('2004-02-28', timezone_open('US/Central'));
    $result = date_format(date_modify($date, '+1 day'), 'Y-m-d');
    $this->assertEqual('2004-02-29', $result, "Check date_modify('2004-02-28', '+1 day'), should be '2004-02-29'");

    $date = date_create('2004-03-01', timezone_open('US/Central'));
    $result = date_format(date_modify($date, '-1 day'), 'Y-m-d');
    $this->assertEqual('2004-02-29', $result, "Check date_modify('2004-03-01', '-1 day'), should be '2004-02-29'");
    $date = date_create('2005-03-01', timezone_open('US/Central'));
    $result = date_format(date_modify($date, '-1 day'), 'Y-m-d');
    $this->assertEqual('2005-02-28', $result, "Check date_modify('2005-03-01', '-1 day'), should be '2005-02-28'");

    $timezone = timezone_open('America/Chicago');
    $date = date_create('2007-03-11 01:59:59', $timezone);
    $this->assertEqual(date_offset_get($date), -21600, 'The offset 1 minute before start of CDT, 2am on Mar 11, 2007 is -21600, returned '. date_offset_get($date));
    $date = date_create('2007-03-11 02:00:00', $timezone);
    $this->assertEqual(date_offset_get($date), -18000, 'New DST rules: The offset at start of CDT, 2am on Mar 11, 2007 is -18000, returned '. date_offset_get($date));
    $date = date_create('2001-03-11 02:00:00', $timezone);
    $this->assertEqual(date_offset_get($date), -21600, 'Old DST rules: The offset at 2am on Mar 11, 2001 is -21600, returned '. date_offset_get($date));

    $date = date_create('1970-01-01 00:00:00', $timezone);
    $date = date_timezone_set($date, timezone_open('Asia/Tokyo'));
    $format = date_format($date, 'm/d/Y h:i a');
    $this->assertEqual($format, '01/01/1970 03:00 pm', 'Convert date using date_timezone_set(), 1970-01-01 00:00:00 in America/Chicago becomes 01/01/1970 03:00 pm in Asia/Tokyo, returned '. $format);

    // Test offsets for DST and non DST in various parts of the world.
    $date = '2007-02-01 00:00:00';
    $date2 = '2007-08-07 00:00:00';
    $vals = array(
      // This is tricky, Honolulu does not observe dst
      array('val' => $date, 'tz' => 'Pacific/Honolulu', 'offset' => -36000),
      array('val' => $date2, 'tz' => 'Pacific/Honolulu', 'offset' => -36000),
      array('val' => $date, 'tz' => 'America/Vancouver', 'offset' => -28800),
      array('val' => $date2, 'tz' => 'America/Vancouver', 'offset' => -25200),
      // Mexico changes to dst at different times in different states,
      // too complex to get this working in PHP 4.
      //array('val' => $date, 'tz' => 'America/Mexico_City', 'offset' => -21600),
      //array('val' => $date2, 'tz' => 'America/Mexico_City', 'offset' => -18000),
      array('val' => $date, 'tz' => 'America/New_York', 'offset' => -18000),
      array('val' => $date2, 'tz' => 'America/New_York', 'offset' => -14400),
      array('val' => $date, 'tz' => 'Europe/London', 'offset' => 0),
      array('val' => $date2, 'tz' => 'Europe/London', 'offset' => 3600),
      array('val' => $date, 'tz' => 'Europe/Brussels', 'offset' => 3600),
      array('val' => $date2, 'tz' => 'Europe/Brussels', 'offset' => 7200),
      array('val' => $date, 'tz' => 'Europe/Kiev', 'offset' => 7200),
      array('val' => $date2, 'tz' => 'Europe/Kiev', 'offset' => 10800),
      array('val' => $date, 'tz' => 'Asia/Calcutta', 'offset' => 19800),
      array('val' => $date2, 'tz' => 'Asia/Calcutta', 'offset' => 19800),
      array('val' => $date, 'tz' => 'Asia/Shanghai', 'offset' => 28800),
      array('val' => $date2, 'tz' => 'Asia/Shanghai', 'offset' => 28800),
      array('val' => $date, 'tz' => 'Asia/Tokyo', 'offset' => 32400),
      array('val' => $date2, 'tz' => 'Asia/Tokyo', 'offset' => 32400),
      // Southern hemisphere rules get reversed.
      array('val' => $date, 'tz' => 'Australia/Sydney', 'offset' => 39600),
      array('val' => $date2, 'tz' => 'Australia/Sydney', 'offset' => 36000),
      );
    foreach ($vals as $val) {
      $timezone = timezone_open($val['tz']);
      $date = date_create($val['val'], $timezone);
      $this->assertEqual(date_offset_get($date), $val['offset'], "Testing date_create('". $val['val'] ."', timezone_open('". $val['tz'] ."')) offset should be ". $val['offset'] .", result is ". date_offset_get($date));
    }
  }
}