/**
* @dataProvider dateIntervalStrings
* @param string $intervalSpec
* @param array $parts
*/
public function testFromDateInterval($intervalSpec, array $parts)
{
$interval = DateInterval::fromDateInterval(new \DateInterval($intervalSpec));
self::assertInstanceOf(DateInterval::class, $interval);
self::assertEquals($parts[0], $interval->y);
self::assertEquals($parts[1], $interval->m);
self::assertEquals($parts[2], $interval->d);
self::assertEquals($parts[3], $interval->h);
self::assertEquals($parts[4], $interval->i);
self::assertEquals($parts[5], $interval->s);
// Test for extreme case when diff between winter and summer time returns interval with negative hour
$phpDate1 = new \DateTimeImmutable('2016-11-22 11:00:00');
$phpDate2 = new \DateTimeImmutable('2016-08-22 12:00:00');
$phpInterval = $phpDate1->diff($phpDate2);
$interval = DateInterval::fromDateInterval($phpInterval);
self::assertEquals('P3MT-1H', (string) $interval);
}
/**
* @param \DateTimeInterface $dateTime
* @param bool $absolute
* @return DateInterval
*/
public function diff($dateTime, $absolute = false)
{
return DateInterval::fromDateInterval(parent::diff($dateTime, $absolute));
}
