add invalid cases to UriRetrieverTest, making the Test fail
add invalid cases to UriRetrieverTest, making the Test fail

alecsammon/json-schema,JoelESvensson/json-schema-hack,siad007/json-schema,Targoniy/-json-schema-for-trip-api,edisonthk/json-schema,richgarrod/json-schema,justinrainbow/json-schema,localheinz/json-schema,ChrisTitos/json-schema,JoelESvensson/json-schema-hack,samokspv/json-schema,siwinski/json-schema,araines/json-schema,erayd/json-schema,robotdance/json-schema,sam002/json-schema,JustTSK/json-schema,JoelESvensson/json-schema-hack,jojo1981/json-schema