diff --git a/test/wanijo/infra/system_test.clj b/test/wanijo/infra/system_test.clj
index 28c6eb8..82ccb75 100644
--- a/test/wanijo/infra/system_test.clj
+++ b/test/wanijo/infra/system_test.clj
@@ -8,7 +8,8 @@
             [wanijo.attribute.routes :as attr-routes]
             [wanijo.instance.routes :as inst-routes]
             [wanijo.instance.forms :as inst-forms]
-            [wanijo.instance.db :as inst-db]))
+            [wanijo.instance.db :as inst-db]
+            [clojure.pprint :as pp]))
 
 (defn single-result
   ([cypher]
@@ -123,11 +124,11 @@
 
     (is (= (:uuid instance)
            (single-result "MATCH (i:instance)-[:link]->(:instance)
-                             RETURN i.uuid")))
+                           RETURN i.uuid")))
 
     (is (= (:uuid instance2)
            (single-result "MATCH (i:instance)<-[:link]-(:instance)
-                             RETURN i.uuid"))))
+                           RETURN i.uuid"))))
 
   (testing "show instances"
     (let [resp (inst-routes/route-show!
@@ -143,6 +144,25 @@
       (is (true? (string/includes? resp (:name instance))))
       (is (true? (string/includes? resp (:name schema))))))
 
+  (testing "modifying first instance"
+    (let [prop-uuid (single-result
+                     (str
+                      "MATCH (i:instance)<-[:of]-(p:property)
+                       WHERE i.uuid = '" (:uuid instance) "'
+                       RETURN p.uuid"))]
+      (inst-routes/route-edit!
+       (:uuid instance)
+       {:params {:name "new-instance-1"
+                 (inst-forms/attr->field-id attr) "new-value"
+                 (inst-forms/attr->uuid-field-id attr) prop-uuid}
+        :session {:uuid (:uuid user)}})
+      (is (= "new-value"
+             (single-result
+              (str
+               "MATCH (p:property)
+                WHERE p.uuid = '" prop-uuid "'
+                RETURN p.value"))))))
+
   (testing "delete first instance"
     (inst-routes/route-delete! (:uuid instance))
     (is (= 1 (single-result "MATCH (i:instance) RETURN COUNT(i)")))
@@ -155,3 +175,6 @@
     (is (= 0 (single-result "MATCH (i:instance) RETURN COUNT(i)")))
     (is (= 0 (single-result "MATCH (p:property) RETURN COUNT(p)")))
     (is (= 1 (single-result "MATCH (s:schema) RETURN COUNT(s)")))))
+
+(comment
+  (allround-system-test))
\ No newline at end of file