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RxTest/RxBlocking
ςετύλʔϯ
iOSDC 2018 Reject Conference days1
2018/09/18
@takehilo_kaneko
ͲͪΒ͔ͱ͍͏ͱ
ॳ৺ऀ͚
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ࣗݾհ
ۚࢠ ༤େ
@takehilo_kaneko
1ऑ
https://qiita.com/takehilo
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No content
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͜ͷτʔΫͷత
• RxTestɺRxBlockingΛͬͨϢχοτςετΛॻ͍ͨ͜ͱ͕ͳ
͍ਓʹ͚ͯɺ͜ΕΒͷϥΠϒϥϦ͕ͲͷΑ͏ͳͷ͔ɺRxͳ
ίʔυͷςετͲͷΑ͏ʹॻ͚Α͍ͷ͔Λཧղͯ͠Β͏
• RxTestɺRxBlockingΛͳΜͱͳ͍ͬͯ͘Δਓʹ͚ͯɺ͜Ε
ΒͷϥΠϒϥϦ͕ఏڙ͢ΔػೳΛཧ͠ɺॻ͖ํͷύλʔϯΛ
͓͑ͯ͞Β͏
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ॳͷݟͱͪΐͬͱҧͬͨ…
• CFPΛॻ͍ͨॳͨ͘͞Μͷ࣮ફతͳςετύλʔϯΛ·ͱΊΑ͏ͱҙ
ؾࠐΜͰ͍͕ͨɺ࣮ࡍϓϩδΣΫτͰͦΕ΄Ͳύλʔϯ͕ͳ͔ͬͨ…
• ීஈ͔ΒςετΛॻ͍ͯΔਓʹ৽͍͠ൃݟͳ͍͔
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ViewModelɺAPIΫϥΠΞϯτ
ͷ2ͭͷςετέʔεΛ͝հ
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ViewModelͷέʔε
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͜ͷίʔυͷςετͲ͏ͬͯॻ͘ʁ
class LoginViewModel {
let email = BehaviorRelay(value: "")
let password = BehaviorRelay(value: "")
var isValidForm: Driver {
return Driver.combineLatest(
email.asDriver().map { isValidEmail($0) },
password.asDriver().map { isValidPassword($0) }
)
.map { $0 && $1 }
}
}
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class LoginViewModel {
let email = BehaviorRelay(value: "")
let password = BehaviorRelay(value: "")
var isValidForm: Driver {
return Driver.combineLatest(
email.asDriver().map { isValidEmail($0) },
password.asDriver().map { isValidPassword($0)}
)
.map { $0 && $1 }
}
}
͜ͷίʔυͷςετͲ͏ͬͯॻ͘ʁ
ϏϡʔͷTextFieldΛόΠϯυ͢ΔͨΊͷϓϩύςΟ
ϝʔϧΞυϨεͱύεϫʔυͷঢ়ଶΛ࣋ͭ
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class LoginViewModel {
let email = BehaviorRelay(value: "")
let password = BehaviorRelay(value: "")
var isValidForm: Driver {
return Driver.combineLatest(
email.asDriver().map { isValidEmail($0) },
password.asDriver().map { isValidPassword($0) }
)
.map { $0 && $1 }
}
}
͜ͷίʔυͷςετͲ͏ͬͯॻ͘ʁ
TextFieldʹจࣈྻ͕ೖྗ͞ΕΔͨͼʹόϦσʔγϣϯνΣοΫΛߦ͏
ϝʔϧΞυϨεͱύεϫʔυڞʹ༗ޮͳϑΥʔϚοτͰ͋Εtrueͱ͢Δ
Ϗϡʔ͜ͷϓϩύςΟΛαϒεΫϥΠϒ͠ɺόϦσʔγϣϯ݁ՌΛϏϡʔ
ʹө͢ΔʢϩάΠϯϘλϯͷ༗ޮ/ແޮΛΓସ͑Δͱ͔ʣ
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Γ͍ͨ͜ͱ
• Ϣʔβͷจࣈྻೖྗૢ࡞ΛΤϛϡϨʔτ͍ͨ͠
• ྫ͑ɺϝʔϧΞυϨεͱύεϫʔυΛަޓʹೖྗͯ͠ɺͦͷͨ
ͼʹόϦσʔγϣϯ݁Ռ͕ظͲ͓ΓʹͳΔ͔Λݕূ͍ͨ͠
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RxTest
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TestScheduler
• Ծ࣌ؒΛཧ͢Δεέδϡʔϥ
• ࢦఆͨ࣌͠ࠁʹਖ਼֬ʹΠϕϯτΛൃߦ͢Δ
TestableObservableΛੜ͢Δ͜ͱ͕Ͱ͖Δ
• Ͳͷ࣌ࠁʹͲΜͳΠϕϯτΛड৴ͨ͠ͷ͔Λه͢Δ
TestableObserverΛੜ͢Δ͜ͱ͕Ͱ͖Δ
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HotObservableͱColdObservable
• HotObservable
• Φϒβʔό͕͍Δ͍ͳ͍ʹ͔͔ΘΒͣɺࢦఆ͞Εͨ࣌ࠁʹਖ਼֬ʹΠ
ϕϯτΛൃߦ͢ΔObservable
• ColdObservable
• ৽͘͠Φϒβʔό͕αϒεΫϥΠϒ͢ΔͱɺΠϕϯτΛ࠷ॳ͔ΒϦ
ϓϨΠ͢Δ
• HotObservableͱҧ͍ɺΦϒβʔόαϒεΫϥΠϒ͢ΔλΠϛ
ϯάʹؔΘΒͣ࠷ॳͷΠϕϯτ͔Βड͚औΔ͜ͱ͕ग़དྷΔ
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ςετίʔυ͜͏ͳΔ
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it("should be true when both email and password are valid") {
let xs1 = scheduler.createHotObservable([
Recorded.next(10, "a"),
Recorded.next(30, "[email protected]"),
Recorded.next(50, "a")
])
let xs2 = scheduler.createHotObservable([
Recorded.next(20, "p"),
Recorded.next(40, "passw0rd"),
Recorded.next(60, "p")
])
xs1.bind(to: loginViewModel.email).disposed(by: disposeBag)
xs2.bind(to: loginViewModel.password).disposed(by: disposeBag)
let observer = scheduler.createObserver(Bool.self)
loginViewModel.isValidForm.drive(observer).disposed(by: disposeBag)
scheduler.start()
expect(observer.events).to(equal([
Recorded.next(0, false),
Recorded.next(10, false),
Recorded.next(20, false),
Recorded.next(30, false),
Recorded.next(40, true),
Recorded.next(50, false),
Recorded.next(60, false)
]))
}
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it("should be true when both email and password are valid") {
let xs1 = scheduler.createHotObservable([
Recorded.next(10, "a"),
Recorded.next(30, "[email protected]"),
Recorded.next(50, "a")
])
let xs2 = scheduler.createHotObservable([
Recorded.next(20, "p"),
Recorded.next(40, "passw0rd"),
Recorded.next(60, "p")
])
xs1.bind(to: loginViewModel.email).disposed(by: disposeBag)
xs2.bind(to: loginViewModel.password).disposed(by: disposeBag)
...
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it("should be true when both email and password are valid") {
let xs1 = scheduler.createHotObservable([
Recorded.next(10, "a"),
Recorded.next(30, "[email protected]"),
Recorded.next(50, "a")
])
let xs2 = scheduler.createHotObservable([
Recorded.next(20, "p"),
Recorded.next(40, "passw0rd"),
Recorded.next(60, "p")
])
xs1.bind(to: loginViewModel.email).disposed(by: disposeBag)
xs2.bind(to: loginViewModel.password).disposed(by: disposeBag)
...
TestSchedulerΠϯελϯε
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it("should be true when both email and password are valid") {
let xs1 = scheduler.createHotObservable([
Recorded.next(10, "a"),
Recorded.next(30, "[email protected]"),
Recorded.next(50, "a")
])
let xs2 = scheduler.createHotObservable([
Recorded.next(20, "p"),
Recorded.next(40, "passw0rd"),
Recorded.next(60, "p")
])
xs1.bind(to: loginViewModel.email).disposed(by: disposeBag)
xs2.bind(to: loginViewModel.password).disposed(by: disposeBag)
...
Ծ࣌ࠁ10,30,50ʹͦΕͧΕࢦఆͨ͠จࣈྻΛൃߦ͢
ΔHotObservableΛੜ
ϢʔβͷϝʔϧΞυϨεೖྗΛΤϛϡϨʔτ͢Δͷ
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it("should be true when both email and password are valid") {
let xs1 = scheduler.createHotObservable([
Recorded.next(10, "a"),
Recorded.next(30, "[email protected]"),
Recorded.next(50, "a")
])
let xs2 = scheduler.createHotObservable([
Recorded.next(20, "p"),
Recorded.next(40, "passw0rd"),
Recorded.next(60, "p")
])
xs1.bind(to: loginViewModel.email).disposed(by: disposeBag)
xs2.bind(to: loginViewModel.password).disposed(by: disposeBag)
...
Ծ࣌ࠁ20,40,60ʹͦΕͧΕࢦఆͨ͠จࣈྻΛൃߦ͢
ΔHotObservableΛੜ
ϢʔβͷύεϫʔυೖྗΛΤϛϡϨʔτ͢Δͷ
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it("should be true when both email and password are valid") {
let xs1 = scheduler.createHotObservable([
Recorded.next(10, "a"),
Recorded.next(30, "[email protected]"),
Recorded.next(50, "a")
])
let xs2 = scheduler.createHotObservable([
Recorded.next(20, "p"),
Recorded.next(40, "passw0rd"),
Recorded.next(60, "p")
])
xs1.bind(to: loginViewModel.email).disposed(by: disposeBag)
xs2.bind(to: loginViewModel.password).disposed(by: disposeBag)
...
ੜͨ͠ObservableΛViewModelͷemailͱpassword
ϓϩύςΟʹόΠϯυ͢Δ
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...
let observer = scheduler.createObserver(Bool.self)
loginViewModel.isValidForm.drive(observer).disposed(by: disposeBag)
scheduler.start()
expect(observer.events).to(equal([
Recorded.next(0, false),
Recorded.next(10, false),
Recorded.next(20, false),
Recorded.next(30, false),
Recorded.next(40, true),
Recorded.next(50, false),
Recorded.next(60, false)
]))
}
ΦϒβʔόΛ࡞͠ɺViewModelͷisValidFormʹαϒεΫ
ϥΠϒͤ͞Δ
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...
let observer = scheduler.createObserver(Bool.self)
loginViewModel.isValidForm.drive(observer).disposed(by: disposeBag)
scheduler.start()
expect(observer.events).to(equal([
Recorded.next(0, false),
Recorded.next(10, false),
Recorded.next(20, false),
Recorded.next(30, false),
Recorded.next(40, true),
Recorded.next(50, false),
Recorded.next(60, false)
]))
}
͜͜·Ͱࣄલ४උ
start()ϝιουΛݺͼग़͢͜ͱͰɺԾ͕࣌ؒ։࢝͞ΕΔ
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...
let observer = scheduler.createObserver(Bool.self)
loginViewModel.isValidForm.drive(observer).disposed(by: disposeBag)
scheduler.start()
expect(observer.events).to(equal([
Recorded.next(0, false),
Recorded.next(10, false),
Recorded.next(20, false),
Recorded.next(30, false),
Recorded.next(40, true),
Recorded.next(50, false),
Recorded.next(60, false)
]))
}
Φϒβʔόʹه͞Ε͍ͯΔΠϕϯτΛݕূ͢Δ
ϝʔϧΞυϨεͱύεϫʔυ͕ڞʹ༗ޮͳϑΥʔϚοτʹ
ͳΔ࣌ࠁ40ͷΈtrueʹͳΔ
࣌ࠁ FNBJM QBTTXPSE ݁Ռ
'"-4&
B '"-4&
B Q '"-4&
B!FYBNQMFDPN Q '"-4&
B!FYBNQMFDPN QBTTXSE 536&
B QBTTXSE '"-4&
B Q '"-4&
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APIΫϥΠΞϯτͷέʔε
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͜ͷίʔυͷςετͲ͏ͬͯॻ͘ʁ
class UserService {
func fetchUser(by userId: Int) -> Single {
return Single.create { single in
Alamofire.request("https://api.example.com/users/\(userId)")
.responseData { response in
switch response.result {
case let .success(data):
do {
let user = try JSONDecoder().decode(User.self, from: data)
single(.success(user))
} catch {
single(.error(error))
}
case let .failure(error):
single(.error(error))
}
}
return Disposables.create()
}
}
}
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͜ͷίʔυͷςετͲ͏ͬͯॻ͘ʁ
class UserService {
func fetchUser(by userId: Int) -> Single {
return Single.create { single in
Alamofire.request("https://api.example.com/users/\(userId)")
.responseData { response in
switch response.result {
case let .success(data):
do {
let user = try JSONDecoder().decode(User.self, from: data)
single(.success(user))
} catch {
single(.error(error))
}
case let .failure(error):
single(.error(error))
}
}
return Disposables.create()
}
}
}
GETϦΫΤετΛૹ৴͢Δ
ඇಉظʹΠϕϯτ͕ൃߦ͞ΕΔ
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͜ͷίʔυͷςετͲ͏ͬͯॻ͘ʁ
class UserService {
func fetchUser(by userId: Int) -> Single {
return Single.create { single in
Alamofire.request("https://api.example.com/users/\(userId)")
.responseData { response in
switch response.result {
case let .success(data):
do {
let user = try JSONDecoder().decode(User.self, from: data)
single(.success(user))
} catch {
single(.error(error))
}
case let .failure(error):
single(.error(error))
}
}
return Disposables.create()
}
}
}
ϨεϙϯεσʔλΛUserܕʹσίʔυ͢Δ
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͜ͷίʔυͷςετͲ͏ͬͯॻ͘ʁ
class UserService {
func fetchUser(by userId: Int) -> Single {
return Single.create { single in
Alamofire.request("https://api.example.com/users/\(userId)")
.responseData { response in
switch response.result {
case let .success(data):
do {
let user = try JSONDecoder().decode(User.self, from: data)
single(.success(user))
} catch {
single(.error(error))
}
case let .failure(error):
single(.error(error))
}
}
return Disposables.create()
}
}
}
ΓSingleܕ
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Γ͍ͨ͜ͱ
• GETϦΫΤετΛελϒԽ͍ͨ͠
• ਖ਼͍͠URLʹϦΫΤετͯ͠Δ͔Λݕূ͍ͨ͠
• ඇಉظʹൃߦ͞ΕΔΠϕϯτΛݕূ͍ͨ͠
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Mockingjay
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Mockingjay
• NSURLConnectionɺNSURLSessionΛͬͨHTTP/HTTPSϦΫ
ΤετΛελϒԽͰ͖ΔϥΠϒϥϦ
• ࣄલʹࢦఆͨ͠ϦΫΤετʹϚονͨ͠Βɺࢦఆͨ͠Ϩεϙϯ
εΛฦ͢͜ͱ͕Ͱ͖Δ
• ςετϑϨʔϜϫʔΫQuickʹରԠ͍ͯ͠Δ
• ςετ͕ऴΘͬͨΒࣗಈͰελϒΛղআͯ͘͠ΕΔ
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RxBlocking
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RxBlocking
• ௨ৗͷObservableΛBlockingObservableʹม͢Δ
• BlockingObservablecompleted/errorΠϕϯτ͕ൃߦ͞ΕΔ
͔λΠϜΞτ͢Δ·ͰɺΧϨϯτεϨουΛϒϩοΫ͢Δ
• ͜ΕʹΑΓɺΠϕϯτ͕ඇಉظʹൃߦ͞ΕΔ߹Ͱ؆୯ʹς
ετΛ͢Δ͜ͱ͕Ͱ͖Δ
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ςετίʔυ͜͏ͳΔ
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beforeEach {
userService = UserService()
let userJson = "{\"id\": 1, \"name\": \"test-user\"}"
self.stub(
uri("https://api.example.com/users/1"),
jsonData(userJson.data(using: .utf8)!)
)
}
it("should fetch an user") {
let expectedUser = User(id: 1, name: "test-user")
let user = try! userService.fetchUser(by: 1).toBlocking().single()
expect(user).to(equal(expectedUser))
}
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beforeEach {
userService = UserService()
let userJson = "{\"id\": 1, \"name\": \"test-user\"}"
self.stub(
uri("https://api.example.com/users/1"),
jsonData(userJson.data(using: .utf8)!)
)
}
it("should fetch an user") {
let expectedUser = User(id: 1, name: "test-user")
let user = try! userService.fetchUser(by: 1).toBlocking().single()
expect(user).to(equal(expectedUser))
}
ࢦఆͨ͠URLʹϦΫΤετ͕ൃߦ͞ΕͨΒɺuserJsonจࣈྻΛϨε
ϙϯεͱͯ͠ฦ͢Α͏ʹࢦఆ
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beforeEach {
userService = UserService()
let userJson = "{\"id\": 1, \"name\": \"test-user\"}"
self.stub(
uri("https://api.example.com/users/1"),
jsonData(userJson.data(using: .utf8)!)
)
}
it("should fetch an user") {
let expectedUser = User(id: 1, name: "test-user")
let user = try! userService.fetchUser(by: 1).toBlocking().single()
expect(user).to(equal(expectedUser))
}
toBlocking()ͰBlockingObservableʹม
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beforeEach {
userService = UserService()
let userJson = "{\"id\": 1, \"name\": \"test-user\"}"
self.stub(
uri("https://api.example.com/users/1"),
jsonData(userJson.data(using: .utf8)!)
)
}
it("should fetch an user") {
let expectedUser = User(id: 1, name: "test-user")
let user = try! userService.fetchUser(by: 1).toBlocking().single()
expect(user).to(equal(expectedUser))
}
ඇಉظΠϕϯτ͕ൃߦ͞ΕΔ·ͰεϨουΛϒϩοΫ͠ɺ
ΠϕϯτͷཁૉʢUserΠϯελϯεʣΛऔΓग़͢
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BlockingObservableͷΦϖϨʔλ
• ڞ௨ͷڍಈ: Observable͕completed·ͨerrorΛൃߦ͢Δ·ͰΧϨϯτε
ϨουΛϒϩοΫ͠ɺड৴ͨ͠ΠϕϯτͷཁૉΛه͢Δ
• materialize(): completed/failedέʔεΛ࣋ͭEnumΛฦ͢
• first()/last(): ࠷ॳ/࠷ޙͷཁૉΛฦ͢ɻerrorͷ߹ྫ֎Λεϩʔ͢Δ
• toArray(): શͯͷཁૉΛฦ͢ɻerrorͷ߹ྫ֎Λεϩʔ͢Δ
• single(): ࠷ॳͷཁૉΛฦ͢ɻ2ͭҟৗͷΠϕϯτΛड৴͍ͯͨ͠߹ྫ֎
Λεϩʔ͢Δ
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·ͱΊ
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·ͱΊ
• RxͳίʔυRxTestͱRxBlockingΛ͏͜ͱͰγϯϓϧʹϢ
χοτςετ͕ॻ͚Δ
• ॻ͖ํͷύλʔϯΛ͓͑͞ΔͱɺRxͳίʔυͷςετ͍ͩͨ
͍ॻ͚Δʢͣʣ
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͓·͚
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https://qiita.com/takehilo/items/09f4a3077e441e5bb9de
ΑΓৄ͍͠༰ΛQiitaͰެ։͍ͯ͠·͢ʂ
ࠓճհ͖͠Εͳ͔ͬͨRxTestɺRxBlockingͷػೳʹ͍ͭͯ৮Ε͍ͯ·͢
͙͢ʹࢼͤΔGithubϦϙδτϦ͋ΔΑ
ϑΟʔυόοΫ
͓͍ͪͯ͠·͢ʂʂ
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TestableObservableͱtoBlocking()ซ༻Ͱ͖ͳ͍
it("Don't do this") {
let xs = scheduler.createHotObservable([
Recorded.next(110, 10),
Recorded.next(210, 20),
Recorded.next(310, 30),
Recorded.completed(40)
])
scheduler.start()
expect(try! xs.toBlocking().toArray()).to(equal([10, 20, 30]))
}
ϒϩοΫ͞Εͨ··ʹͳΓςετ͕ऴྃ͠ͳ͍
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ศརͳΤΫεςϯγϣϯ
extension Recorded: Equatable where Value: Equatable {}
extension Event: Equatable where Element: Equatable {}
NimbleͷexpectͰΠϕϯτͷݕূ͕͘͢͠ͳΔʂ
https://github.com/Quick/Nimble/issues/523
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Thank you!!