I have 2 functions where one basically retrieves string in User Defaults and another writes the string in User Defaults. I’m not able to understand that should I do the unit test or no? and I’m pretty new to the concept for Unit testing.  …

I am a newbie here, first request.  This is called-from and declared inside my viewcontroller class:     func NrangeAlert() {         let alert = NSAlert()         alert.messageText = “N out of range”         alert.informativeText = “use a number between 1 and 92”         alert.alertStyle =…

import UIKit extension String {   func toDate() -> Date? {   let dateFormatter = DateFormatter()   dateFormatter.dateFormat = “MMMM d, yyyy h:mm a”   dateFormatter.locale = Locale(identifier: “en_US_POSIX”)   dateFormatter.timeZone = .current   return dateFormatter.date(from: self)   } } let date = “October 3,…