public function testOverlaps()
{
// Pattern 1
$dateRange = new DateRange(strtotime('2015-10-01'), strtotime('2015-10-20'));
$target = new DateRange(strtotime('2015-10-10'), strtotime('2015-10-25'));
$actual = $dateRange->overlaps($target);
$this->assertTrue($actual);
// Pattern 2
$target = new DateRange(strtotime('2015-10-21'), strtotime('2015-10-25'));
$actual = $dateRange->overlaps($target);
$this->assertFalse($actual);
// Pattern 3
$dateRange = new DateRange(strtotime('2015-10-01'), strtotime('2015-10-20'));
$target = new DateRange(strtotime('2015-09-20'), strtotime('2015-10-10'));
$actual = $dateRange->overlaps($target);
$this->assertTrue($actual);
// Pattern 4
$target = new DateRange(strtotime('2015-09-20'), strtotime('2015-09-25'));
$actual = $dateRange->overlaps($target);
$this->assertFalse($actual);
}
