Return the number of times a duration fits into the start and end date taking into account
BAT's consideration that the end time for a BAT event includes that last minute.
public function testDivide2()
{
$start_date = new \DateTime('2016-02-11 12:00');
$end_date = new \DateTime('2016-02-11 21:59');
$duration = new \DateInterval('P1D');
$percentage = EventInterval::divide($start_date, $end_date, $duration);
$this->assertEquals(round($percentage, 2), 0.42);
$duration = new \DateInterval('PT3H');
$percentage = EventInterval::divide($start_date, $end_date, $duration);
$this->assertEquals(round($percentage, 2), 3.33);
$duration = new \DateInterval('PT2H');
$percentage = EventInterval::divide($start_date, $end_date, $duration);
$this->assertEquals(round($percentage, 2), 5);
$duration = new \DateInterval('PT1H');
$percentage = EventInterval::divide($start_date, $end_date, $duration);
$this->assertEquals(round($percentage, 2), 10);
$duration = new \DateInterval('PT30M');
$percentage = EventInterval::divide($start_date, $end_date, $duration);
$this->assertEquals(round($percentage, 2), 20);
$duration = new \DateInterval('PT15M');
$percentage = EventInterval::divide($start_date, $end_date, $duration);
$this->assertEquals(round($percentage, 2), 40);
$duration = new \DateInterval('PT10M');
$percentage = EventInterval::divide($start_date, $end_date, $duration);
$this->assertEquals(round($percentage, 2), 60);
$duration = new \DateInterval('PT5M');
$percentage = EventInterval::divide($start_date, $end_date, $duration);
$this->assertEquals(round($percentage, 2), 120);
}
/**
* {@inheritdoc}
*/
public function determineValue()
{
$value = 0;
// Instantiate a calendar
$calendar = new Calendar(array($this->unit), $this->store);
$events = $calendar->getEvents($this->start_date, $this->end_date);
foreach ($events as $unit => $unit_events) {
if ($unit == $this->unit->getUnitId()) {
foreach ($unit_events as $event) {
$percentage = EventInterval::divide($event->getStartDate(), $event->getEndDate(), $this->duration_unit);
$value = $value + $event->getValue() * $percentage;
}
}
}
return round($value, 2);
}