Allow date to be DateTime object

src/Valitron/Validator.php

@@ -495,7 +495,13 @@ class Validator
      */
     protected function validateDate($field, $value)
     {
-        return strtotime($value) !== false;
+        $isDate = false;
+        if($value instanceof \DateTime) {
+            $isDate = true;
+        } else {
+            $isDate = strtotime($value) !== false;
+        }
+        return $isDate;
     }
 
     /**

tests/Valitron/ValidateTest.php

@@ -413,6 +413,13 @@ class ValidateTest extends BaseTestCase
         $this->assertTrue($v->validate());
     }
 
+    public function testDateValidWithDateTimeObject()
+    {
+        $v = new Validator(array('date' => new DateTime()));
+        $v->rule('date', 'date');
+        $this->assertTrue($v->validate());
+    }
+
     public function testDateInvalid()
     {
         $v = new Validator(array('date' => 'no thanks'));