public function testUpdateSingleInstanceToAnEarlierTime()
{
$now = Date::Now();
$newStart = Date::Parse('2010-01-01 04:00:00', 'UTC');
$start = Date::Parse('2010-01-01 05:00:00', 'UTC');
$end = Date::Parse('2010-01-01 07:00:00', 'UTC');
$future1 = new TestReservation('1', new DateRange($now->AddDays(5), $now->AddDays(5)));
$future2 = new TestReservation('2', new DateRange($now->AddDays(6), $now->AddDays(6)));
$current = new TestReservation('3', new DateRange($start, $end));
$existing = new ExistingReservationSeries();
$existing->WithInstance($future1);
$existing->WithInstance($future2);
$existing->WithCurrentInstance($current);
$existing->ApplyChangesTo(SeriesUpdateScope::ThisInstance);
$existing->UpdateDuration(new DateRange($newStart, $end));
$newCurrent = $existing->CurrentInstance();
$this->assertTrue($newCurrent->StartDate()->Equals($newStart));
$this->assertTrue($newCurrent->EndDate()->Equals($end));
}
