public function testIsContiguous()
{
$dr1 = new DateRange(new DateTime('2006-07-08'), new DateTime('2006-09-05'));
$dr2 = new DateRange(new DateTime('2006-09-06'), new DateTime('2006-09-15'));
$dr3 = new DateRange(new DateTime('2006-09-15'), new DateTime('2006-09-25'));
$this->assertFalse(DateRange::isContiguous(array($dr1, $dr2, $dr3)));
$dr4 = new DateRange(new DateTime('2006-09-16'), new DateTime('2006-09-25'));
$this->assertTrue(DateRange::isContiguous(array($dr1, $dr2, $dr4)));
$this->assertTrue(DateRange::isContiguous(array($dr4, $dr1, $dr2)));
}
