Switch to Swift presented at mix-it2015

http://www.mix-it.fr/session/1771/switch-to-swift

Transcript

1. Switch to Swift?
   

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2. tweet: @corinnekrych
   code: github corinnekrych
   blog: corinnekrych.org
   chat: irc aerogear
   Corinne
   

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3. Switch to Swift?
   That is the question
   

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4. Early adoption path
   Xcode crash
   

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5. Why Swift?
   Apple goals with Swift:
   • modern
   • easy-to-read code
   • safer code
   • compatible with existing Objective-C
   

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6. Swift super powers…
   … for Switching
   to Swift
   

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7. Syntax: melting pot
   Tip 1
   "Of course, it also greatly
   benefited from the experiences hard-
   won by many other languages (…)
   Objective-C, Rust, Haskell, Ruby,
   Python, C#, CLU, and far too many
   others to list."
   Groovy
   Scala
   Rust C#
   ObjC
   Haskell
   

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8. var shoppingList = ["catfish", "water"]
   shoppingList[1] = "bottle of water"
   var occupations = [
   "Malcolm": "Captain",
   "Kaylee": "Mechanic",
   ]
   occupations["Jayne"] = "Public Relations"
   var emptyMap = [:]
   var emptyList = []
   def shoppingList = ["catfish", "water"]
   shoppingList[1] = "bottle of water"
   def occupations = [
   "Malcolm": "Captain",
   "Kaylee": "Mechanic",
   ]
   occupations["Jayne"] = "Public Relations"
   def emptyMap = [:]
   def emptyList = []
   Resemblance to…
   

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9. var shoppingList = ["catfish", "water"]
   shoppingList[1] = "bottle of water"
   var occupations = [
   "Malcolm": "Captain",
   "Kaylee": "Mechanic",
   ]
   occupations["Jayne"] = "Public Relations"
   var emptyMap = [:]
   var emptyList = []
   def shoppingList = ["catfish", "water"]
   shoppingList[1] = "bottle of water"
   def occupations = [
   "Malcolm": "Captain",
   "Kaylee": "Mechanic",
   ]
   occupations["Jayne"] = "Public Relations"
   def emptyMap = [:]
   def emptyList = []
   Resemblance to…
   

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10. Resemblance to…
    func f(x: T) -> T {...}
    func g(x: A) {}
    func h(x: T) -> T {...}
    func k(x:Int = 0) {}
    def f[T](x: T): T = ...
    def g(x: A) {}
    def h[T <: A](x: T): T ...
    def k(x: Int =0)
    

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11. Resemblance to…
    func f(x: T) -> T {...}
    func g(x: A) {}
    func h(x: T) -> T {...}
    func k(x:Int = 0) {}
    def f[T](x: T): T = ...
    def g(x: A) {}
    def h[T <: A](x: T): T ...
    def k(x: Int =0)
    

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12. Resemblance to…
    var a = "some text"
    var b = "some text"
    if a == b {
    println("The strings are equal")
    }
    if a.hasPrefix("some") {
    println("Starts with some")
    }
    if a.hasSuffix("some") {
    println("Endss with some")
    }
    a = "some text"
    b = "some text"
    if a == b:
    print("The strings are equal")
    if a.startswith("some"):
    print("Starts with some")
    if a.endswith("some"):
    print("Ends with some")
    

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13. Resemblance to…
    var a = "some text"
    var b = "some text"
    if a == b {
    println("The strings are equal")
    }
    if a.hasPrefix("some") {
    println("Starts with some")
    }
    if a.hasSuffix("some") {
    println("Endss with some")
    }
    a = "some text"
    b = "some text"
    if a == b:
    print("The strings are equal")
    if a.startswith("some"):
    print("Starts with some")
    if a.endswith("some"):
    print("Ends with some")
    

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14. Resemblance to…
    var dict = Dictionary()
    var dict2 = ["TYO": "Tokyo",
    "DUB": “Dublin"]
    for (key, value) in dict {
    …
    …
    }
    var dict = new Dictionary();
    var dict2 = new Dictionary
    {
    { "TYO", "Tokyo" },
    { "DUB", "Dublin" }
    };
    foreach(var item in dict) {
    var key = item.Key;
    var value = item.Value;
    }
    

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15. Resemblance to…
    var dict = Dictionary()
    var dict2 = ["TYO": "Tokyo",
    "DUB": “Dublin"]
    for (key, value) in dict {
    …
    …
    }
    var dict = new Dictionary();
    var dict2 = new Dictionary
    {
    { "TYO", "Tokyo" },
    { "DUB", "Dublin" }
    };
    foreach(var item in dict) {
    var key = item.Key;
    var value = item.Value;
    }
    

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16. Resemblance to…
    let success = { (res: A) -> () in
    println("succeeded")
    }
    let failure = { (res: A) -> () in
    println("FH init failed")
    }
    FH(success: success, failure: failure)
    void (^success)(A *) = ^(A * res) {
    NSLog(@"succeeded");
    };
    void (^failure)(id) = ^(A * res) {
    NSLog(@"FH init failed");
    };
    [FH initWithSuccess:success AndFailure:failure];
    

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17. Resemblance to…
    let success = { (res: A) -> () in
    println("succeeded")
    }
    let failure = { (res: A) -> () in
    println("FH init failed")
    }
    FH(success: success, failure: failure)
    void (^success)(A *) = ^(A * res) {
    NSLog(@"succeeded");
    };
    void (^failure)(id) = ^(A * res) {
    NSLog(@"FH init failed");
    };
    [FH initWithSuccess:success AndFailure:failure];
    

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18. Resemblance to…
    let success = { (res: A) -> () in
    println("succeeded")
    }
    let failure = { (res: A) -> () in
    println("FH init failed")
    }
    FH(success: success, failure: failure)
    void (^success)(A *) = ^(A * res) {
    NSLog(@"succeeded");
    };
    void (^failure)(id) = ^(A * res) {
    NSLog(@"FH init failed");
    };
    [FH initWithSuccess:success AndFailure:failure];
    http://goshdarnblocksyntax.com/
    

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19. Interactive
    Playgrounds
    Tip 2
    // Playground - noun:
    // a place where people can play
    

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20. swift
    Xcode 6.3-beta
    Xcode 6.0
    Inside Playgrounds
    

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21. swift
    Xcode 6.3-beta
    Xcode 6.0
    Inside Playgrounds
    

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22. swift
    Xcode 6.3-beta
    Inside Playgrounds
    

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23. Playground time
    

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24. To be or not to be…
    Tip 3
    

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25. Properties
    Computed properties do not store a
    value.
    Instead, they provide a getter and
    an optional setter to retrieve and
    set other properties and values
    indirectly.
    Tip 4
    

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26. /**
    An OAuth2Session implementation to store OAuth2 metadata using Keychain.
    */
    public class TrustedPersistantOAuth2Session: OAuth2Session {
    private let keychain: KeychainWrap
    /**
    The access token. The information is read securely from Keychain.
    */
    public var accessToken: String? {
    get {
    return self.keychain.read(self.accountId, tokenType: .AccessToken)
    }
    set(value) {
    if let unwrappedValue = value {
    let result = self.keychain.save(self.accountId,
    tokenType: .AccessToken, value: unwrappedValue)
    }
    }
    }
    Computed properties
    aerogear-ios-oauth2
    

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27. /**
    An OAuth2Session implementation to store OAuth2 metadata using Keychain.
    */
    public class TrustedPersistantOAuth2Session: OAuth2Session {
    private let keychain: KeychainWrap
    /**
    The access token. The information is read securely from Keychain.
    */
    public var accessToken: String? {
    get {
    return self.keychain.read(self.accountId, tokenType: .AccessToken)
    }
    set(value) {
    if let unwrappedValue = value {
    let result = self.keychain.save(self.accountId,
    tokenType: .AccessToken, value: unwrappedValue)
    }
    }
    }
    Computed properties
    aerogear-ios-oauth2
    

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28. /**
    An OAuth2Session implementation to store OAuth2 metadata using Keychain.
    */
    public class TrustedPersistantOAuth2Session: OAuth2Session {
    private let keychain: KeychainWrap
    /**
    The access token. The information is read securely from Keychain.
    */
    public var accessToken: String? {
    get {
    return self.keychain.read(self.accountId, tokenType: .AccessToken)
    }
    set(value) {
    if let unwrappedValue = value {
    let result = self.keychain.save(self.accountId,
    tokenType: .AccessToken, value: unwrappedValue)
    }
    }
    }
    Computed properties
    aerogear-ios-oauth2
    

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29. /**
    An OAuth2Session implementation to store OAuth2 metadata using Keychain.
    */
    public class TrustedPersistantOAuth2Session: OAuth2Session {
    private let keychain: KeychainWrap
    /**
    The access token. The information is read securely from Keychain.
    */
    public var accessToken: String? {
    get {
    return self.keychain.read(self.accountId, tokenType: .AccessToken)
    }
    set(value) {
    if let unwrappedValue = value {
    let result = self.keychain.save(self.accountId,
    tokenType: .AccessToken, value: unwrappedValue)
    }
    }
    }
    Computed properties
    aerogear-ios-oauth2
    

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30. Enum on steroid
    Tip 5
    

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31. var jsonString = "[{\"id\":1, \"name\": \"Eliott\"}," +
    "{\"id\":2, \"name\": \"Emilie\"}]"
    var data = jsonString.dataUsingEncoding(NSUTF8StringEncoding)
    let jsonObject: AnyObject! = NSJSONSerialization.JSONObjectWithData(data!, options:
    NSJSONReadingOptions.MutableContainers, error: nil)
    // Handling JSON in Swift with optional and type casting
    if let personsArray = jsonObject as? NSArray {
    if let firstPerson = personsArray[0] as? NSDictionary {
    if let name = firstPerson["name"] as? NSString {
    println("First person name is \(name)")
    }
    }
    }
    Problem to solve: JSON
    SwitftyJSON
    

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32. var jsonString = "[{\"id\":1, \"name\": \"Eliott\"}," +
    "{\"id\":2, \"name\": \"Emilie\"}]"
    var data = jsonString.dataUsingEncoding(NSUTF8StringEncoding)
    let jsonObject: AnyObject! = NSJSONSerialization.JSONObjectWithData(data!, options:
    NSJSONReadingOptions.MutableContainers, error: nil)
    // Handling JSON in Swift with optional and type casting
    if let personsArray = jsonObject as? NSArray {
    if let firstPerson = personsArray[0] as? NSDictionary {
    if let name = firstPerson["name"] as? NSString {
    println("First person name is \(name)")
    }
    }
    }
    Problem to solve: JSON
    SwitftyJSON
    // Using SwiftyJSON
    let json = JSON(data: data!)
    if let userName = json[0]["name"].string {
    println("First person name is \(userName)”)
    }
    

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33. public enum JSON {
    //private type number
    case ScalarNumber(NSNumber)
    //private type string
    case ScalarString(NSString)
    //private type sequence
    case Sequence([JSON])
    //private type mapping
    case Mapping([String: JSON])
    //private type null
    case Null(NSError?)
    . . .
    }
    Enum associated values
    SwitftyJSON
    

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34. public enum JSON {
    //private type number
    case ScalarNumber(NSNumber)
    //private type string
    case ScalarString(NSString)
    //private type sequence
    case Sequence([JSON])
    //private type mapping
    case Mapping([String: JSON])
    //private type null
    case Null(NSError?)
    . . .
    }
    Enum associated values
    SwitftyJSON
    public init(object: AnyObject) {
    switch object {
    case let number as NSNumber:
    self = .ScalarNumber(number)
    case let string as NSString:
    self = .ScalarString(string)
    case let null as NSNull:
    self = .Null(nil)
    case let array as [AnyObject]:
    self = .Sequence(array)
    case let dictionary as [String: AnyObject]:
    self = .Mapping(dictionary)
    default:
    self = .Null(NSError(…))
    }
    }
    

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35. SwitftyJSON
    Subscript
    // Using SwiftyJSON
    let json = JSON(data: data!)
    if let userName = json[0]["name"].string {
    println("First person name is \(userName)")
    }
    

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36. public subscript(index: Int) -> JSON {
    get {
    switch self {
    case .Sequence(let array):
    if array.count > index {
    return array[index]
    } else {
    return .Null(NSError(…))
    }
    default:
    return .Null(NSError(…))
    }
    }
    }
    SwitftyJSON
    Subscript
    // Using SwiftyJSON
    let json = JSON(data: data!)
    if let userName = json[0]["name"].string {
    println("First person name is \(userName)")
    }
    

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37. public var string: String? {
    get {
    switch self {
    case .ScalarString(let string):
    return string
    default:
    return nil
    }
    }
    }
    public subscript(index: Int) -> JSON {
    get {
    switch self {
    case .Sequence(let array):
    if array.count > index {
    return array[index]
    } else {
    return .Null(NSError(…))
    }
    default:
    return .Null(NSError(…))
    }
    }
    }
    SwitftyJSON
    Subscript
    // Using SwiftyJSON
    let json = JSON(data: data!)
    if let userName = json[0]["name"].string {
    println("First person name is \(userName)")
    }
    

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38. Surrounded by clones
    Almost all types in Swift are
    value types, including arrays,
    dictionary, numbers,
    booleans, tuples, and
    enums.
    Classes are the exception
    rather than the rule.
    Tip 6
    

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39. Functions in Swift are first-class values,
    i.e. functions may be passed as
    arguments to other functions, and
    functions may return new functions.
    Tip 7 Functions, methods
    closures
    

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40. Methods
    @implementation Greetings
    …
    - (NSString *)helloFirstname:(NSString *)firstname lastname:(NSNumber *)lastname {
    return [[NSString alloc] initWithFormat:@"hello, %@ %@", firstname, lastname];
    }
    [self helloFirstName:@"Isabel" lastname:@"Dupont"];
    

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41. Methods
    @implementation Greetings
    …
    - (NSString *)helloFirstname:(NSString *)firstname lastname:(NSNumber *)lastname {
    return [[NSString alloc] initWithFormat:@"hello, %@ %@", firstname, lastname];
    }
    [self helloFirstName:@"Isabel" lastname:@"Dupont"];
    class Greetings {
    func helloFirstname(firstname: String, lastname: String) -> String {
    return "Hello \(firstname) \(lastname)"
    }
    }
    let morning = Greetings()
    morning.helloFirstname("Isabel", lastname: "Dupont")
    

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42. func hello(firstname: String, lastname: String) -> String {
    return "hello, \(firstname) \(lastname)"
    }
    hello("Isabel", "Dupont")
    Functions
    

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43. func hello(firstname: String, lastname: String) -> String {
    return "hello, \(firstname) \(lastname)"
    }
    hello("Isabel", "Dupont")
    Functions
    func hello(firstname: String, #lastname: String) -> String {
    return "Hello \(firstname) \(lastname)."
    }
    hello("Isabel", lastname: "Dupont")
    

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44. func hello(firstname: String, lastname: String) -> String {
    return "hello, \(firstname) \(lastname)"
    }
    hello("Isabel", "Dupont")
    Functions
    func hello(firstname: String, #lastname: String) -> String {
    return "Hello \(firstname) \(lastname)."
    }
    hello("Isabel", lastname: "Dupont")
    func hello(firstname: String, lastname lastname: String) -> String {
    return "Hello \(firstname) \(lastname)."
    }
    hello("Isabel", lastname: "Dupont")
    

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45. Define your own matrix
    Operator overloading!
    “With great power comes great
    responsibility,”
    Tip 8
    

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46. when to use them in real life?
    Person
    {
    "firstname": "john",
    "lastname": "doe",
    "address": {
    "street": "Buch Street",
    "poBox": 123,
    "city": "Glasgow",
    "country": "UK"
    }
    }
    aerogear-ios-jsonsz
    

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47. when to use them in real life?
    Person
    {
    "firstname": "john",
    "lastname": "doe",
    "address": {
    "street": "Buch Street",
    "poBox": 123,
    "city": "Glasgow",
    "country": "UK"
    }
    }
    class Person {
    var firstname: String?
    var lastname: String
    var address: Address?
    }
    class Address {
    var street: String
    var poBox: Int
    var city: String
    var country: String
    }
    aerogear-ios-jsonsz
    

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48. when to use them in real life?
    Person
    {
    "firstname": "john",
    "lastname": "doe",
    "address": {
    "street": "Buch Street",
    "poBox": 123,
    "city": "Glasgow",
    "country": "UK"
    }
    }
    class Person {
    var firstname: String?
    var lastname: String
    var address: Address?
    }
    class Address {
    var street: String
    var poBox: Int
    var city: String
    var country: String
    }
    class Person: JSONSerializable {
    var firstname: String?
    var lastname: String
    var address: Address?
    required init() {}
    class func map(source: JsonSZ,
    object: Person) {
    object.firstname <= source["firstname"]
    object.lastname <= source["lastname"]
    object.address <= source["address"]
    }
    }
    aerogear-ios-jsonsz
    

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49. when to use them in real life?
    Person
    {
    "firstname": "john",
    "lastname": "doe",
    "address": {
    "street": "Buch Street",
    "poBox": 123,
    "city": "Glasgow",
    "country": "UK"
    }
    }
    class Person {
    var firstname: String?
    var lastname: String
    var address: Address?
    }
    class Address {
    var street: String
    var poBox: Int
    var city: String
    var country: String
    }
    class Person: JSONSerializable {
    var firstname: String?
    var lastname: String
    var address: Address?
    required init() {}
    class func map(source: JsonSZ,
    object: Person) {
    object.firstname <= source["firstname"]
    object.lastname <= source["lastname"]
    object.address <= source["address"]
    }
    }
    aerogear-ios-jsonsz
    // serialize from json
    var serializer = JsonSZ()
    let developer:Person = serializer.fromJSON(developerJSON, to: Person.self)
    XCTAssertTrue(developer.firstname == "john")
    XCTAssertTrue(developer.lastname == "doe")
    

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50. it’s all about type…
    public func <=(inout left: String?, right: JsonSZ) {
    if let value = right.value {
    field = value as? String
    }
    }
    aerogear-ios-jsonsz
    

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51. it’s all about type…
    public func <=(inout left: String?, right: JsonSZ) {
    if let value = right.value {
    field = value as? String
    }
    }
    aerogear-ios-jsonsz
    public func <=(inout left: Int?, right: JsonSZ) {
    if let value = right.value {
    field = value as? Int
    }
    }
    public func <=(inout left: Bool?, right: JsonSZ) {
    if let value = right.value {
    field = value as? Bool
    }
    }
    

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52. Go Generics
    Generics allow a programmer to tell their
    functions and classes:
    “I am going to give you a type later and
    I want you to enforce that type
    everywhere I specify.”
    Tip 8
    

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53. it’s all about type…
    public func <=(inout left: T?, right: JsonSZ) {
    if let value: AnyObject = right.value {
    switch T.self {
    case is String.Type, is Bool.Type, is Int.Type, is Double.Type, is Float.Type:
    field = value as? T
    . . .
    default:
    field = nil
    return
    }
    }
    }
    aerogear-ios-jsonsz
    

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54. it’s all about type…
    public func <=(inout left: T?, right: JsonSZ) {
    if let value: AnyObject = right.value {
    switch T.self {
    case is String.Type, is Bool.Type, is Int.Type, is Double.Type, is Float.Type:
    field = value as? T
    . . .
    default:
    field = nil
    return
    }
    }
    }
    public func <=(inout left: T?, right: JsonSZ) {
    if let value = right.value as? [String: AnyObject] {
    field = JsonSZ().fromJSON(value, to: T.self)
    }
    }
    aerogear-ios-jsonsz
    

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55. Extension
    Tip 9
    Extensions add new functionality to an
    existing class, structure, or enumeration
    type.
    

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56. extension String {
    public func urlEncode() -> String {
    let encodedURL = CFURLCreateStringByAddingPercentEscapes(nil,
    self as NSString,
    nil,
    "!@#$%&*'();:=+,/?[]",
    CFStringBuiltInEncodings.UTF8.rawValue)
    return encodedURL as String
    }
    }
    aerogear-ios-http
    Extend behaviour
    

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57. class MyViewController: UIViewController, UITableViewDataSource,
    UIScrollViewDelegate {
    // all methods
    }
    To be stylish ;)
    

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58. class MyViewController: UIViewController {
    // class stuff here
    }
    // MARK: - UITableViewDataSource
    extension MyViewController: UITableViewDataSource {
    // table view data source methods
    }
    // MARK: - UIScrollViewDelegate
    extension MyViewController: UIScrollViewDelegate {
    // scroll view delegate methods
    }
    class MyViewController: UIViewController, UITableViewDataSource,
    UIScrollViewDelegate {
    // all methods
    }
    To be stylish ;)
    

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59. What about testing?
    Statically Stubbed
    or
    Dynamically Mocked
    Tip 10
    

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60. Mocking yourself
    func testRequestAccessWithAuthzCodeFlow() {
    let expectation = expectationWithDescription("AccessRequestWithAuthzFlow");
    let googleConfig = . . .
    var mock = OAuth2ModulePartialMock(config: googleConfig,
    session: MockOAuth2Session())
    mock.requestAccess { (response: AnyObject?, error:NSError?) -> Void in
    XCTAssertTrue("ACCESS_TOKEN" == response as String,
    “response with access token")
    expectation.fulfill()
    }
    waitForExpectationsWithTimeout(10, handler: nil)
    }
    aerogear-ios-oauth2
    

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61. Mocking yourself
    func testRequestAccessWithAuthzCodeFlow() {
    let expectation = expectationWithDescription("AccessRequestWithAuthzFlow");
    let googleConfig = . . .
    var mock = OAuth2ModulePartialMock(config: googleConfig,
    session: MockOAuth2Session())
    mock.requestAccess { (response: AnyObject?, error:NSError?) -> Void in
    XCTAssertTrue("ACCESS_TOKEN" == response as String,
    “response with access token")
    expectation.fulfill()
    }
    waitForExpectationsWithTimeout(10, handler: nil)
    }
    aerogear-ios-oauth2
    

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62. Mocking yourself
    func testRequestAccessWithAuthzCodeFlow() {
    let expectation = expectationWithDescription("AccessRequestWithAuthzFlow");
    let googleConfig = . . .
    var mock = OAuth2ModulePartialMock(config: googleConfig,
    session: MockOAuth2Session())
    mock.requestAccess { (response: AnyObject?, error:NSError?) -> Void in
    XCTAssertTrue("ACCESS_TOKEN" == response as String,
    “response with access token")
    expectation.fulfill()
    }
    waitForExpectationsWithTimeout(10, handler: nil)
    }
    class OAuth2ModulePartialMock: OAuth2Module {
    override func refreshAccessToken(
    completionHandler:(AnyObject?, NSError?) -> ()) {
    completionHandler("NEW_ACCESS_TOKEN", nil)
    }
    override func requestAuthorizationCode(
    completionHandler: (AnyObject?, NSError?) -> ()) {
    completionHandler("ACCESS_TOKEN", nil)
    }
    }
    aerogear-ios-oauth2
    

    View Slide

63. Mocking yourself
    func testRequestAccessWithAuthzCodeFlow() {
    let expectation = expectationWithDescription("AccessRequestWithAuthzFlow");
    let googleConfig = . . .
    var mock = OAuth2ModulePartialMock(config: googleConfig,
    session: MockOAuth2Session())
    mock.requestAccess { (response: AnyObject?, error:NSError?) -> Void in
    XCTAssertTrue("ACCESS_TOKEN" == response as String,
    “response with access token")
    expectation.fulfill()
    }
    waitForExpectationsWithTimeout(10, handler: nil)
    }
    public class MockOAuth2Session: OAuth2Session {
    public override var refreshToken: String? {
    get {return nil}
    set(data) {}
    }
    public override func tokenIsNotExpired() ->
    Bool {
    return false
    }
    }
    class OAuth2ModulePartialMock: OAuth2Module {
    override func refreshAccessToken(
    completionHandler:(AnyObject?, NSError?) -> ()) {
    completionHandler("NEW_ACCESS_TOKEN", nil)
    }
    override func requestAuthorizationCode(
    completionHandler: (AnyObject?, NSError?) -> ()) {
    completionHandler("ACCESS_TOKEN", nil)
    }
    }
    aerogear-ios-oauth2
    

    View Slide

64. Mocking yourself
    func testRequestAccessWithAuthzCodeFlow() {
    let expectation = expectationWithDescription("AccessRequestWithAuthzFlow");
    let googleConfig = . . .
    var mock = OAuth2ModulePartialMock(config: googleConfig,
    session: MockOAuth2Session())
    mock.requestAccess { (response: AnyObject?, error:NSError?) -> Void in
    XCTAssertTrue("ACCESS_TOKEN" == response as String,
    “response with access token")
    expectation.fulfill()
    }
    waitForExpectationsWithTimeout(10, handler: nil)
    }
    public class MockOAuth2Session: OAuth2Session {
    public override var refreshToken: String? {
    get {return nil}
    set(data) {}
    }
    public override func tokenIsNotExpired() ->
    Bool {
    return false
    }
    }
    class OAuth2ModulePartialMock: OAuth2Module {
    override func refreshAccessToken(
    completionHandler:(AnyObject?, NSError?) -> ()) {
    completionHandler("NEW_ACCESS_TOKEN", nil)
    }
    override func requestAuthorizationCode(
    completionHandler: (AnyObject?, NSError?) -> ()) {
    completionHandler("ACCESS_TOKEN", nil)
    }
    }
    aerogear-ios-oauth2
    

    View Slide

65. Mocking yourself
    func testRequestAccessWithAuthzCodeFlow() {
    let expectation = expectationWithDescription("AccessRequestWithAuthzFlow");
    let googleConfig = . . .
    var mock = OAuth2ModulePartialMock(config: googleConfig,
    session: MockOAuth2Session())
    mock.requestAccess { (response: AnyObject?, error:NSError?) -> Void in
    XCTAssertTrue("ACCESS_TOKEN" == response as String,
    “response with access token")
    expectation.fulfill()
    }
    waitForExpectationsWithTimeout(10, handler: nil)
    }
    public class MockOAuth2Session: OAuth2Session {
    public override var refreshToken: String? {
    get {return nil}
    set(data) {}
    }
    public override func tokenIsNotExpired() ->
    Bool {
    return false
    }
    }
    class OAuth2ModulePartialMock: OAuth2Module {
    override func refreshAccessToken(
    completionHandler:(AnyObject?, NSError?) -> ()) {
    completionHandler("NEW_ACCESS_TOKEN", nil)
    }
    override func requestAuthorizationCode(
    completionHandler: (AnyObject?, NSError?) -> ()) {
    completionHandler("ACCESS_TOKEN", nil)
    }
    }
    aerogear-ios-oauth2
    

    View Slide

66. SwiftyJSON
    aerogear-ios-oauth2
    aerogear-ios-http
    aerogear-ios-jsonsz
    Be smart, code open source
    Dollar.swift
    

    View Slide