Improved DateRange to check if both wrapped dates are empty

module/Common/src/Util/DateRange.php

@@ -33,4 +33,12 @@ class DateRange
     {
         return $this->endDate;
     }
+
+    /**
+     * @return bool
+     */
+    public function isEmpty()
+    {
+        return is_null($this->startDate) && is_null($this->endDate);
+    }
 }

module/Core/src/Repository/VisitRepository.php

@@ -29,7 +29,7 @@ class VisitRepository extends EntityRepository implements VisitRepositoryInterfa
         $shortUrl = $shortUrl instanceof ShortUrl
             ? $shortUrl
             : $this->getEntityManager()->find(ShortUrl::class, $shortUrl);
-        if (! isset($dateRange)) {
+        if (! isset($dateRange) || $dateRange->isEmpty()) {
             $startDate = $shortUrl->getDateCreated();
             $endDate = clone $startDate;
             $endDate->add(new \DateInterval('P2D'));