Test Mergeable Protocol

UserTest.swift

class User: NSObject, Decodable, Mergeable {
    @objc var username: String = ""
    @objc var profileURL: URL?
    
    enum CodingKeys: String, CodingKey {
        case username = "login"
        case profileURL = "avatar_url"
    }
}

let mock = [
    [
        "login": "Geektree0101",
        "avatar_url": "helloworld"
    ],
    [
        "login": "Rinat",
        "avatar_url": "BoloTarara"
    ]
]

if let data = try? JSONSerialization.data(withJSONObject: mock, options: .prettyPrinted),
    let userList = try? JSONDecoder().decode([User].self, from: data) {
    
    let firstUser = userList[0]
    let lastUser = userList[1]
    print("name: \(lastUser.username)") // Rinat
    lastUser.merge(firstUser)
    print("name: \(lastUser.username)") // Geektree0101
}