Responsible for creating a custom mock response and returning it given a path, domain model and status code

MockResponse.swift

public struct MockResponse {

    struct Content {
        let statusCode: Int
        let data: Data
    }

    enum Response {
        case success(Content)
        case error(Error)

        static func model<T: Codable>(_ model: T, statusCode: Int) -> Response {
            let data = try? JSONEncoder().encode(model)
            return .success(.init(statusCode: statusCode, data: data ?? Data()))
        }
    }

    let url: URL
    let response: Response

    init(path: String, response: Response) {
        guard let url = URL(string: path) else {
            fatalError("Bad path formatting")
        }

        self.url = url
        self.response = response
    }
}

extension MockResponse {

    public static var list: MockResponse {
        .init(
            path: "https://www.server.com/api/shopping-list",
            response: .model(
                ShoppingList.mock(with: ["Bread", "Apples"]), statusCode: 200
            )
        )
    }

    // Add more mock response's here...

}