Swift Post Testability Example Code

Testability4.swift

class FileOpener {
    let urlOpener: URLOpening
    init(urlOpener: URLOpening = UIApplication.shared) {
        self.urlOpener = urlOpener
    }
    
    func open(identifier: String) {
        guard let url = URL(string: "iosappscheme://open?id=\(identifier)") else {
            debugPrint("Failed to load URL")
            return
        }
        if urlOpener.canOpenURL(url) {
            urlOpener.open(url, options: [:], completionHandler: nil)
        } else {
            debugPrint("Failed to open URL")
        }
    }
}