rbrovko

Replacing the SceneDelegate When Running Unit Tests

Overview

I've been working through the exercises in the excellent iOS Unit Testing by Example book by Jon Reid, which I highly recommend. However, the book is in beta at the moment and there are some curveballs thrown by iOS 13 that aren't handled in the text yet. Specifically, when I hit the section about using a testing AppDelegate class I thought "This is very good. But what about the SceneDelegate?"

In Chapter 4 the recommendation is to remove the @UIApplicationMain decoration and make a manual top-level call to UIApplicationMain. To wit:

import UIKit

rbrovko

import UIKit

public enum DisplayType {
    case unknown
    case iphone4
    case iphone5
    case iphone6
    case iphone6plus
    static let iphone7 = iphone6
    static let iphone7plus = iphone6plus

rbrovko

# Xcode 6.2 (6C131e)
Swift version 1.1 (swift-600.0.57.4)
Target: x86_64-apple-darwin14.1.0

# Xcode 6.3 (6D570)
Apple Swift version 1.2 (swiftlang-602.0.49.3 clang-clang-602.0.49)
Target: x86_64-apple-darwin14.1.0

# Xcode 6.3.1 (6D1002)
Apple Swift version 1.2 (swiftlang-602.0.49.6 clang-602.0.49)

rbrovko

import XCTest
@testable import Notes

class NoteTests: XCTestCase {

    private let uid = "123"
    private let title = "title"
    private let content = "text"
    private let importance = Note.Importance.normal
    private var sut: Note!

rbrovko

import XCTest
@testable import Notes

class NoteTests: XCTestCase {

    private let uid = "123"
    private let title = "title"
    private let content = "text"
    private let importance = Note.Importance.normal
    private var sut: Note!

rbrovko

import XCTest
@testable import Notes

class NoteTests: XCTestCase {

    private let uid = "123"
    private let title = "title"
    private let content = "text"
    private let importance = Note.Importance.normal
    private var sut: Note!

rbrovko

import XCTest
@testable import Notes

class NoteTests: XCTestCase {

    private let uid = "123"
    private let title = "title"
    private let content = "text"
    private let importance = Note.Importance.normal
    private var sut: Note!

rbrovko

//
//  FileNotebookTests.swift
//  NoteTests
//
//  Created by Roman Brovko on 6/19/19.
//  Copyright © 2019 Roman Brovko. All rights reserved.
//

import XCTest
@testable import Note

rbrovko

//
//  NoteExtensionsTests.swift
//  NoteTests
//
//  Created by Roman Brovko on 6/18/19.
//  Copyright © 2019 Roman Brovko. All rights reserved.
//

import XCTest
@testable import Note

rbrovko

//
//  NoteTests.swift
//  NoteTests
//
//  Created by Roman Brovko on 6/17/19.
//  Copyright © 2019 Roman Brovko. All rights reserved.
//

import XCTest
@testable import Note