<?php
// $Id: date_api.test,v 1.5 2008-01-02 17:01:58 karens Exp $
/**
 * Test Date API functions
 */
class DateAPI extends DrupalTestCase {
  function get_info() {
    return array('name' => t('Date API'), 'desc' => t('Test Date API functions like date_convert(), date_part_extract(), date_is_valid(), date_last_day_of_month(), date_first_day_of_week().') , 'group' => 'Date tests');
  }

  function testDateAPI() {
    include_once(drupal_get_path('module', 'date_api') .'/date_api.module');
    $this->drupalVariableSet('date_first_day', 1);
    $expected = array ( 0 => t('Mon'), 1 => t('Tue'), 2 => t('Wed'), 3 => t('Thu'), 4 => t('Fri'), 5 => t('Sat'), 6 => t('Sun'), );
    $days = date_week_days_ordered(date_week_days_abbr(1));
    $this->assertEqual($expected, $days, 'Test that date_week_days_ordered() array starts on Monday when the site first day is on Monday.');
    $this->drupalVariableSet('date_first_day', 0);
    $expected = array ( 0 => t('Sun'), 1 => t('Mon'), 2 => t('Tue'), 3 => t('Wed'), 4 => t('Thu'), 5 => t('Fri'), 6 => t('Sat'), );
    $days = date_week_days_ordered(date_week_days_abbr(1));
    $this->assertEqual($expected, $days, 'Test that date_week_days_ordered() array starts on Sunday when the site first day is on Sunday.');

    $value = '2007-12-05 23:59';
    $this->assertEqual(TRUE, date_part_extract($value, 'year'), "Test date_part_extract(". $value .", year), results ". date_part_extract($value, 'year'));
    $this->assertEqual(TRUE, date_part_extract($value, 'month'), "Test date_part_extract(". $value .", mon), results ". date_part_extract($value, 'month'));
    $this->assertEqual(TRUE, date_part_extract($value, 'day'), "Test date_part_extract(". $value .", mday), results ". date_part_extract($value, 'day'));

    $this->assertEqual(TRUE, date_is_valid($value), "Test date_is_valid(". $value .")");
    $value = '2007-00-00 00:00';
    $this->assertNotEqual(TRUE, date_is_valid($value), "Test for invalid date_is_valid(". $value .")");
    $value = '0000-00-00 00:00';
    $this->assertNotEqual(TRUE, date_is_valid($value), "Test for invalid date_is_valid(". $value .")");
    $value = '-100';
    $this->assertNotEqual(TRUE, date_is_valid($value), "Test for invalid date_is_valid(". $value .")");
    $value = '2007-00-00T00:00';
    $this->assertEqual(TRUE, date_is_valid($value, DATE_ISO), "Test ISO exception to date_is_valid(". $value .", DATE_ISO)");

    $expected = 28;
    $date = date_create('2005-02-01 00:00:00', timezone_open('UTC'));
    $value = date_days_in_month($date);
    $this->assertEqual($expected, $value, 'Test date_last_day_of_month(2, 2005), results '.$value);
    $expected = 29;
    $date = date_create('2004-02-01 00:00:00', timezone_open('UTC'));
    $value = date_days_in_month($date);
    $this->assertEqual($expected, $value, 'Test date_last_day_of_month(2, 2004), results '.$value);
    $expected = 28;
    $date = date_create('2003-02-01 00:00:00', timezone_open('UTC'));
    $value = date_days_in_month($date);
    $this->assertEqual($expected, $value, 'Test date_last_day_of_month(2, 2003), results '.$value);

    $dates = array(
      '2007-01-01 00:00:00',
      '1970-01-01 00:00:00',
      '1900-01-01 00:00:00',
      '1600-01-01 00:00:00',
      '0100-01-01 00:00:00');
    foreach ($dates as $date) {
      $unix = date_convert($date, DATE_DATETIME, DATE_UNIX);
      $datetime = date_convert($unix, DATE_UNIX, DATE_DATETIME);
      $this->assertEqual($date, $datetime, 'Test roundtrip using date_convert() from DATE_DATETIME to DATE_UNIX back to DATE_DATETIME, results '.$date.' >> '.$unix.' >> '.$datetime);
    }

  }
}