public function testGetHours()
{
$d = new DateParser($this->container);
$this->assertEquals(1, $d->getHours(new DateTime('2015-03-14 15:00:00'), new DateTime('2015-03-14 16:00:00')));
$this->assertEquals(2.5, $d->getHours(new DateTime('2015-03-14 15:00:00'), new DateTime('2015-03-14 17:30:00')));
$this->assertEquals(2.75, $d->getHours(new DateTime('2015-03-14 15:00:00'), new DateTime('2015-03-14 17:45:00')));
$this->assertEquals(3, $d->getHours(new DateTime('2015-03-14 14:57:00'), new DateTime('2015-03-14 17:58:00')));
$this->assertEquals(3, $d->getHours(new DateTime('2015-03-14 14:57:00'), new DateTime('2015-03-14 11:58:00')));
}
