Testcase for minProperties with properties defined

+ Fix Test

Author: flolivaud

tests/Constraints/MinMaxPropertiesTest.php

@@ -72,7 +72,7 @@ public function getInvalidTests()
         return array(
             array(
                 '{
-                  "value": 1
+                  "value": {}
                 }',
                 '{
                   "type": "object",
@@ -81,9 +81,27 @@ public function getInvalidTests()
                   }
                 }'
             ),
+            array(
+                '{}',
+                '{
+                  "type": "object",
+                  "properties": {
+                    "propertyOne": {
+                      "type": "string"
+                    },
+                    "propertyTwo": {
+                      "type": "string"
+                    }
+                  },
+                  "minProperties": 1
+                }'
+            ),
             array(
                 '{
-                  "value": 1
+                  "value": {
+                    "propertyOne": "valueOne",
+                    "propertyTwo": "valueTwo"
+                  }
                 }',
                 '{
                   "type": "object",