public void CorrectRequestForCreateReplica() { var factory = Substitute.For <IConnection>(); var client = new DatabasesClient(factory); var replica = new Models.Requests.DatabaseReplica(); client.CreateReplica("1", replica); var parameters = Arg.Is <List <Parameter> >(list => (string)list[0].Value == "1"); factory.Received().ExecuteRequest <DatabaseReplica>("databases/{id}/replicas", parameters, replica, "replica", Method.POST); }