/**
* _date_time_modifier_tests
*
* @param bool $increment_datetimes
*/
protected function _date_time_modifier_tests($increment_datetimes = true)
{
$orig_timezone_string = get_option('timezone_string');
$orig_gmt_offset = get_option('gmt_offset');
// setup data arrays for generating test conditions
$timezones_and_offsets = array('UTC' => '', 'America/Vancouver' => '', null => -5);
$periods = array('years' => 'P%Y', 'months' => 'P%M', 'weeks' => 'P%W', 'days' => 'P%D', 'hours' => 'PT%H', 'minutes' => 'PT%M', 'seconds' => 'PT%S');
// I can not tell a Fib... the following sequence is for Sidney
$intervals = array(0, 1, 2, 3, 5, 8, 13, 21, 34);
// loop thru timezones and gmt_offsets and set up environment
foreach ($timezones_and_offsets as $timezone_string => $gmt_offset) {
$gmt_offset = $gmt_offset !== 'null' ? $gmt_offset : '';
update_option('timezone_string', $timezone_string);
update_option('gmt_offset', $gmt_offset);
// loop thru remaining data arrays
foreach ($periods as $period => $designator) {
foreach ($intervals as $interval) {
// don't bother adding more than 5 years
if ($period == 'years' && $interval > 5) {
continue;
}
// TEST: add $interval $period ( ie: add 1 year... add 3 months... add 34 seconds )
// setup some objects used for testing
$expected_datetime = $this->setup_DateTime_object();
$actual_datetime = EE_Datetime::new_instance(array('DTT_EVT_start' => time()));
$expected_datetime->setTimeZone(new DateTimeZone($actual_datetime->get_timezone()));
$period_interval = str_replace('%', $interval, $designator);
// apply conditions to both objects
if ($increment_datetimes) {
$expected_datetime->add(new DateInterval($period_interval));
$actual_datetime = EEH_DTT_Helper::date_time_add($actual_datetime, 'DTT_EVT_start', $period, $interval);
} else {
$expected_datetime->sub(new DateInterval($period_interval));
$actual_datetime = EEH_DTT_Helper::date_time_subtract($actual_datetime, 'DTT_EVT_start', $period, $interval);
}
$expected = $expected_datetime->format('Y-m-d H:i:s');
$actual = $actual_datetime->get_DateTime_object('DTT_EVT_start')->format('Y-m-d H:i:s');
// compare
if ($expected !== $actual) {
$this->fail(sprintf(__('The %1$s method failed to produce correct results for the the period interval %2$s for timezone "%6$s" and UTC offset "%7$s" .%3$sExpected value: %4$s%3$sActual value: %5$s%3$s', 'event_espresso'), $increment_datetimes ? 'EEH_DTT_Helper::date_time_add()' : 'EEH_DTT_Helper::date_time_subtract()', $period_interval, "\n", $expected, $actual, $timezone_string, $gmt_offset));
}
unset($expected_datetime);
unset($actual_datetime);
}
}
}
update_option('timezone_string', $orig_timezone_string);
update_option('gmt_offset', $orig_gmt_offset);
}
