public function publish(DateRange $publication)
{
$this->state = $this->state->publish();
$this->recordThat(new Events\PostWasPublished($this->getId(), $publication->getStart(), $publication->getEnd()));
}
/**
* @expectedException PHPUnit_Framework_Exception
*/
public function test_change_start_does_not_allow_null_date()
{
$Pub = new DateRange(new \DateTimeImmutable(), new \DateTimeImmutable('+5 day'));
$NewPub = $Pub->changeStart(null);
}
