koromiko

struct Staging: Configuration { 
    var certificate = "ios_distribution"
    var provisioningProfile = "Brewer_Staging"
    var buildConfiguration = "Staging"
    var appIdentifier = "works.sth.brewer.staging"
    var exportMethod = "ad-hoc"
}

struct Production: Configuration { 
    var certificate = "ios_distribution"

koromiko

protocol Configuration {
    /// file name of the certificate 
    var certificate: String { get } 

    /// file name of the provisioning profile
    var provisioningProfile: String { get } 

    /// configuration name in xcode project
    var buildConfiguration: String { get }

koromiko

func package(config: Configuration) {
}

koromiko

class Fastfile: LaneFile {
    func developerReleaseLane() {
        desc("Create a developer release")
	package(config: Staging())
	crashlytics
    }

    func qaReleaseLane() {
        desc("Create a qa release")
        package(config: Production())

koromiko

override func setUp() {
    super.setUp()
    mockAPIService = MockApiService()
    sut = PhotoListViewModel(apiService: mockAPIService)
}

override func tearDown() {
    sut = nil
    mockAPIService = nil
    super.tearDown()

koromiko

func test_user_press_for_sale_item() {
    
    let indexPath = IndexPath(row: 0, section: 0)

	   //Given some photo stubs  
    mockAPIService.completePhotos = StubGenerator().stubPhotos()
    
    sut.initFetch() // Fetch stubs 
    mockAPIService.fetchSuccess()

koromiko

class MockApiService: APIServiceProtocol {    
    var completePhotos: [Photo] = [Photo]() // Array of stubs
    var completeClosure: ((Bool, [Photo], APIError?) -> ())
    
    func fetchPopularPhoto(complete: @escaping (Bool, [Photo], APIError?) -> ()) {
        \\...\\
        completeClosure = complete
    }
    
    func fetchSuccess() {

koromiko

func test_user_press_for_sale_item() {
        
    //Given a sut with fetched photos
    let indexPath = IndexPath(row: 0, section: 0)

    //When
    sut.userPressed( at: indexPath )
    
    //Assert
    XCTAssertTrue( sut.isAllowSegue )

koromiko

class MockAPIService: APIServiceProtocol {
    var completeClosure: ((Bool, [Photo], APIError?) -> ())!
    
    func fetchPopularPhoto(complete: @escaping (Bool, [Photo], APIError?) -> ()) {
        isFetchPopularPhotoCalled = true
        completeClosure = complete        
    }
    
    func fetchSuccess() {
        completeClosure( true, [Photo](), nil )

koromiko

func initFetch() {
    self.isLoading = true
    apiService.fetchPopularPhoto { [weak self] (success, photos, error) in
        self?.isLoading = false
        if let error = error {
            self?.alertMessage = error.rawValue
        } else {
            self?.processFetchedPhoto(photos: photos)
        }
    }