public function testCountMonthsNotOverlapped() { $unit = IntervalUnit::create('month'); $this->assertEquals(4, $result = $unit->countInRange(TimestampRange::create($start = Timestamp::create('2008-12-31 23:59:58'), $end = Timestamp::create('2009-05-28 03:00:00')), false)); $this->assertLessThanOrEqual($end->toStamp(), $start->spawn($result . ' ' . $unit->getName())->toStamp()); }