test for Graph QL for different of data model with same point of api

SPI test.swift

import UIKit

protocol Request {
    associatedtype Payload: Codable
    func fire(completion: (Result<Payload, Error>) -> Void)
    var parameter: [String] { get }
}

protocol DataPayloadModel: Codable {
    
    static var profile: Self { get }
    static var queryBody: [String] { get }
}
struct RolloverDataModal: Codable {
    let balance : Double
}

struct Rollover : Codable, DataPayloadModel {
    
    static var profile: Self { .init(rollover: .init(balance: .nan)) }
    let rollover: RolloverDataModal
}

extension DataPayloadModel {
    static var queryBody: [String] {
        
        Mirror(reflecting: profile).children.reduce([String]()) { $0 + [$1.label!] }
//        var find = [String]()
//        for case let (propertyName?, _) in Mirror(reflecting: profile).children where Parameter(rawValue: propertyName) != nil {
//            find.append(propertyName)
//        }
//        return find
    }
}

extension Request {
    func fire(completion: (Result<Payload, Error>) -> Void) {
        print(parameter)
    }
    
}

enum Parameter: String, CaseIterable {
    case rollover
}

enum SPI<Payload: DataPayloadModel> : Request {
    

    case getInfo
    var parameter: [String] {  Payload.queryBody }
    
}
struct Person : Codable, DataPayloadModel {
    
    static var profile: Self {
        .init(name: "", age: 0, profession: "", gender: "")
    }
    
    let name: String
    let age: Int
    let profession: String
    let gender: String
}


SPI.getInfo.fire { (result: Result<Rollover, Error>) in
}

SPI.getInfo.fire { (result: Result<Person, Error>) in   
}