tifoaudii

final class SomeViewController: UIViewController {
    
    var isFromHome = false
    var isFromCart = false
    var isFromProfile = false
    
    private var cards: [CardModel] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()

tifoaudii

class UserAuthManager {
    
    struct UserProfile {
        let username: String
        let email: String
        let phoneNumber: String
        let gender: String
    }
    
    static let shared: UserAuthManager = UserAuthManager()

tifoaudii

class UserAuthManager {
    
    struct UserProfile {
        let username: String
        let email: String
        let phoneNumber: String
        let gender: String
    }
    
    static let shared: UserAuthManager = UserAuthManager()

tifoaudii

class PokemonLegacyListViewControllerTest: XCTestCase {

    func test_whenSuccessFetchPokemons_shouldRenderCollectionCard() {
        
        // Given
        let sut = PokemonLegacyListViewController()
        sut.service = PokemonServiceSpy(result: .success([
            PokemonCardViewModel(imageUrlString: "imageUrl1", selection: {}),
        ]))
        

tifoaudii

private class PokemonServiceSpy: PokemonService {
    
    let result: Result<[PokemonCardViewModel], Error>
    
    init(result: Result<[PokemonCardViewModel], Error>) {
        self.result = result
    }
    
    func fetchPokemons(completion: @escaping (Result<[PokemonCardViewModel], Error>) -> Void) {
        completion(result)

tifoaudii

protocol PokemonService {
    func fetchPokemons(completion: @escaping (Result<[PokemonCardViewModel], Error>) -> Void)
}

extension PokemonLegacyService: PokemonService {}

class PokemonLegacyListViewController: UIViewController {
    
    ...
    var service: PokemonService = PokemonLegacyService.shared

tifoaudii

class PokemonLegacyListViewControllerTest: XCTestCase {

    func test_whenSuccessFetchPokemons_shouldRenderCollectionCard() {
        
        // Given
        let sut = PokemonLegacyListViewController()
        sut.service = PokemonServiceSpy(result: .success([
            PokemonCardViewModel(imageUrlString: "imageUrl1", selection: {}),
        ]))
        

tifoaudii

var service: PokemonLegacyService = PokemonLegacyService.shared
    
override func viewDidLoad() {
    super.viewDidLoad()
    configureRootView()
    configureCollectionView()
        
    service.fetchPokemons { [weak self] result in
        guard let self = self else { return }
        switch result {

tifoaudii

func test_whenSuccessFetchPokemons_shouldRenderCollectionCard() {
    
    // Given
    let sut = PokemonLegacyListViewController()
    
    // When
    sut.loadViewIfNeeded()
    let expectation = expectation(description: "waiting the result")
    let waiter = XCTWaiter()
    waiter.wait(for: [expectation], timeout: 3.0)

tifoaudii

func test_whenSuccessFetchPokemons_shouldRenderCollectionCard() {
    
    // Given
    let sut = PokemonLegacyListViewController()v
    
    // When
    sut.loadViewIfNeeded()    
    
    // Then
    XCTAssertEqual(sut.state, .success)