The document discusses testing APIs and network requests using stubs and mocks. It provides examples of setting up stubs using OHHTTPStubs to mock API responses for different test cases. It also shows how to use XCTContext to run tests with expectations and wait for expectations to be fulfilled before cleaning up stubs. Key points covered include setting up stubs, activating and deactivating stubs, defining test responses, making requests and asserting on responses using expectations.

1. APIClient
2018/12/14 HAKATA Test Night #1 #hakata_test_night
(@ktanaka117)

2. • / @ktanaka117
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• :
• R&D Swift TDD
• PEAKS iOS

4. Booth iOS
💪

5. APIClient
2018/12/14 HAKATA Test Night #1 #hakata_test_night
(@ktanaka117)

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8. AccessToken/RefreshToken
AccessToken

9. • AccessToken AuthError
• Refresh→Retry AccessToken …
• 5
•
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• 1 1APICall API

10. • Auth Error retry 1
• 5

11. •
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•
• Etc…

14. Android
OkHttp

15. •
• iOS
•
iOS

16. • Interactor - APIClient SessionManager
• Refresh Request
• Refresh Request
• APIKit→Alamofire
• APIKit Refresh/Retry
• Request-Completion
Alamofire

17. : RequestRetrier/RequestAdapter

18. : RequestRetrier/RequestAdapter

20. • APIClient
• APIClient
•

21. • 1
• 2
• 2
• HTTP Status

22. - 1
•
• [200]
• [400]
• [401] refresh

23. - 1
•
• [200]
• [400]
• [401]
• [401, 200(refresh), 200(retry)]
• [401, 200(refresh), 400(retry)]
• [401, 200(refresh), 401(retry)]
Refresh/Retry

24. - 2
•
• [200(a), 200(b)] (ab )
• [400(a), 400(b)] (ab )
• [401(a), 401(b)]

25. - 2
•
• [200(a), 200(b)] / [400(a), 400(b)] (ab )
• [401(a), 200(a, refresh), 200(a, retry), 200(b)] (ab )
• [401(a), 200(a, refresh), 400(a, retry), 200(b)] (ab )
• [401(a), 400(a, refresh), 401(b)] (ab )
• [401(a), 401(a, refresh), 401(b)] (ab )

26. - 2
•

27. - 2
•
• [200(a), 200(b)] / [400(a), 400(b)] (ab )
• [400(a), 401(b)] / [200(a) / 400(b)] (ab , 1 )
• [401(a), 401(b), 200(a, refresh), 200(a, retry), 200(b, retry)] (b Refresh )
• [401(a), 200(a, refresh), 401(b), 200(a, retry), 200(b, retry)] (b Refresh )
• etc…

32. • Stub
• XCTContext
• AccessToken, RefreshToken
• AccessToken, RefreshToken

33. • Stub
• XCTContext
• AccessToken, RefreshToken
• AccessToken, RefreshToken
🙇

34. Stub
var responses = [authError, successWithAccessToken, success]
stub(condition: isHost("example.com")) { request in
return responses.removeFirst()
}
// ......
// ...
OHHTTPStubs.removeAllStubs()
responses test function …

35. Stub
HTTPStub.activate(
condition: isHost("example.com"),
responses: [authError, successWithAccessToken, success])
// ......
// ...
HTTPStub.deactivate()
responses

36. Stub
struct HTTPStub {
static func activate(condition: @escaping OHHTTPStubsTestBlock,
responses: [OHHTTPStubsResponse]) {
var responsesArray = responses
stub(condition: condition) { request in
let response = responsesArray.removeFirst()
return response
}
}
static func deactivate() {
OHHTTPStubs.removeAllStubs()
}
}

37. Blog

38. XCTContext
XCTContext.runActivity(named: case1) { [weak self] _ in
HTTPStub.activate(responses: [authError, successWithAccesstoken, success])
expectation.expectedFulfillmentCount = 1
sessionManager.requestData(TestRequest())
.subscribe(onSuccess: { data, _ in
let success = try? JSONDecoder().decodeSuccess(from: data)
XCTAssertEqual(success, OHHTTPStubsResponse.Success(data: "Success"))
expectation.fulfill()
}, onError: { error in
XCTFail(error.localizedDescription)
expectation.fulfill()
}).disposed(by: disposeBag)
self?.waitForExpectations(timeout: 1.0)
clean()
}

39. XCTContext
XCTContext.runActivity(named: case1) { [weak self] _ in
HTTPStub.activate(responses: [authError, successWithAccesstoken, success])
expectation.expectedFulfillmentCount = 1
sessionManager.requestData(TestRequest())
.subscribe(onSuccess: { data, _ in
let success = try? JSONDecoder().decodeSuccess(from: data)
XCTAssertEqual(success, OHHTTPStubsResponse.Success(data: "Success"))
expectation.fulfill()
}, onError: { error in
XCTFail(error.localizedDescription)
expectation.fulfill()
}).disposed(by: disposeBag)
self?.waitForExpectations(timeout: 1.0)
clean()
}
👃

40. XCTContext
XCTContext.runActivity(named: case1) { [weak self] _ in
HTTPStub.activate(responses: [authError, successWithAccesstoken, success])
expectation.expectedFulfillmentCount = 1
sessionManager.requestData(TestRequest())
.subscribe(onSuccess: { data, _ in
let success = try? JSONDecoder().decodeSuccess(from: data)
XCTAssertEqual(success, OHHTTPStubsResponse.Success(data: "Success"))
expectation.fulfill()
}, onError: { error in
XCTFail(error.localizedDescription)
expectation.fulfill()
}).disposed(by: disposeBag)
self?.waitForExpectations(timeout: 1.0)
clean()
}
Stub 👀

41. XCTContext
XCTContext.runActivity(named: case1) { [weak self] _ in
HTTPStub.activate(responses: [authError, successWithAccesstoken, success])
expectation.expectedFulfillmentCount = 1
sessionManager.requestData(TestRequest())
.subscribe(onSuccess: { data, _ in
let success = try? JSONDecoder().decodeSuccess(from: data)
XCTAssertEqual(success, OHHTTPStubsResponse.Success(data: "Success"))
expectation.fulfill()
}, onError: { error in
XCTFail(error.localizedDescription)
expectation.fulfill()
}).disposed(by: disposeBag)
self?.waitForExpectations(timeout: 1.0)
clean()
}
expectation 👀

42. XCTContext
XCTContext.runActivity(named: case1) { [weak self] _ in
HTTPStub.activate(responses: [authError, successWithAccesstoken, success])
expectation.expectedFulfillmentCount = 1
sessionManager.requestData(TestRequest())
.subscribe(onSuccess: { data, _ in
let success = try? JSONDecoder().decodeSuccess(from: data)
XCTAssertEqual(success, OHHTTPStubsResponse.Success(data: "Success"))
expectation.fulfill()
}, onError: { error in
XCTFail(error.localizedDescription)
expectation.fulfill()
}).disposed(by: disposeBag)
self?.waitForExpectations(timeout: 1.0)
clean()
} 👀

43. XCTContext
XCTContext.runActivity(named: case1) { [weak self] _ in
HTTPStub.activate(responses: [authError, successWithAccesstoken, success])
expectation.expectedFulfillmentCount = 1
sessionManager.requestData(TestRequest())
.subscribe(onSuccess: { data, _ in
let success = try? JSONDecoder().decodeSuccess(from: data)
XCTAssertEqual(success, OHHTTPStubsResponse.Success(data: “Success"))
expectation.fulfill()
}, onError: { error in
XCTFail(error.localizedDescription)
expectation.fulfill()
}).disposed(by: disposeBag)
self?.waitForExpectations(timeout: 1.0)
clean()
}
👀

44. XCTContext
extension XCTContext {
static func runWaitActivity(testCase: XCTestCase,
name name: String,
timeout: TimeInterval = 1.0,
prepare: (() -> Void)? = nil,
then: (XCTestExpectation) -> Void,
clean: (() -> Void)? = nil) {
runActivity(named: named) { _ in
let expectation = name
prepare?()
then(expectation)
testCase.waitForExpectations(timeout: timeout, handler: nil)
clean?()
}
}
}

45. XCTContext
XCTContext
.runWaitActivity(testCase: self, named: case1, prepare: {
HTTPStub.activate(responses: [authError, successWithAccesstoken, success])
}, then: { expectation in
expectation.expectedFulfillmentCount = 1
sessionManager.requestData(TestRequest())
.subscribe(onSuccess: { data, _ in
let success = try? JSONDecoder().decodeSuccess(from: data)
XCTAssertEqual(success, OHHTTPStubsResponse.Success(data: "Success"))
expectation.fulfill()
}, onError: { error in
XCTFail(error.localizedDescription)
expectation.fulfill()
})
.disposed(by: disposeBag)
}, clean: clean)
😄

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