/**
* Whether the test can be repeated again.
* @return boolean
*/
public function canBeStarted()
{
if (!$this->course->deadlineNotReached()) {
return false;
}
if ($this->result == Question::RESULT_UNKNOWN) {
return true;
}
if ($this->result == Question::RESULT_INVALID) {
if ($this->startedAt < time() - self::TIME_BETWEEN_TRIALS_SEC) {
return true;
}
}
return false;
}
