private function convertToUtcDate($date = '')
{
// will be in current TIME_ZONE
$dateTime = new DateTime($date);
$dateTime->setTimezone(new \DateTimeZone('UTC'));
return $dateTime->format(\DateTime::ISO8601);
}
/**
* Returns date formatted according to given format.
*
* @param string $format
* @return string
*/
public function format($format)
{
$format = str_replace('u', sprintf('%06d', $this->microseconds), $format);
return parent::format($format);
}
/**
* @covers oat\dtms\DateTime::format
*/
public function testFormat()
{
$dt = new DateTime('2015-08-08 10:10:10.123456');
$this->assertSame('08.08.2015 10:10:10.123456', $dt->format('d.m.Y H:i:s.u'));
$this->assertSame('08.08.2015 10:10:10', $dt->format('d.m.Y H:i:s'));
$this->assertSame('1439028610.123456', $dt->format('U.u'));
}
/**
* @param AssessmentItemRef $itemRef
*
* @return DateTime
*/
public function getItemStartTime($itemRef)
{
$itemResults = array();
$itemStartTime = null;
$ssid = $this->getTestSession()->getSessionId();
$resultServer = \taoResultServer_models_classes_ResultServerStateFull::singleton();
$collection = $resultServer->getVariables("{$ssid}.{$itemRef->getIdentifier()}.{$this->getTestSession()->getCurrentAssessmentItemRefOccurence()}");
foreach ($collection as $vars) {
foreach ($vars as $var) {
if ($var->variable instanceof taoResultServer_models_classes_TraceVariable && $var->variable->getIdentifier() === 'ITEM_START_TIME_SERVER') {
$itemResults[] = $var->variable->getValue();
}
}
}
$itemResults = array_map(function ($ts) {
$itemStart = new DateTime('now', new DateTimeZone('UTC'));
$itemStart->setTimestamp($ts);
return $itemStart;
}, $itemResults);
if (!empty($itemResults)) {
$itemStartTime = min($itemResults);
}
return $itemStartTime;
}