public void CorrectRequestForUpdateFirewallRules() { var factory = Substitute.For <IConnection>(); var client = new DatabasesClient(factory); var body = new Models.Requests.UpdateDatabaseFirewallRules(); client.UpdateFirewallRules("1", body); var parameters = Arg.Is <List <Parameter> >(list => (string)list[0].Value == "1"); factory.Received().ExecuteRaw("databases/{id}/firewall", parameters, body, Method.PUT); }