Use InMemory db driver at testing

test/yavscTests/appsettings.json

@@ -39,7 +39,7 @@
         }
     },
     "ConnectionStrings": {
-        "YavscConnection": "Server=localhost;Port=5432;Database=testingYavsc;Username=lame-Username;Password=lame-dbPassword;"
+        "YavscConnection": "InMemory"
     },
     "DataProtection": {
         "Keys": {
@@ -64,4 +64,4 @@
             "Password": "f/\\kePassw0rd"
         }
     }
-}
+}