Files
purchases-ios/Tests/UnitTests/Networking/HTTPClientTests.swift
T
Joshua Liebowitz 80905f94c9 Extract Backend dependencies into a BackendConfiguration object (#1696)
Extract out various dependencies that are required to instantiate the `Backend` object.

Refactor to assist with the next few PRs that extract out other pieces
See [CSDK-82]
Resolves [CSDK-155]
2022-06-14 15:12:46 -07:00

1009 lines
36 KiB
Swift

//
// HTTPClientTests.swift
// PurchasesTests
//
// Created by RevenueCat.
// Copyright © 2019 RevenueCat. All rights reserved.
//
import Nimble
import OHHTTPStubs
import OHHTTPStubsSwift
import XCTest
@testable import RevenueCat
class HTTPClientTests: TestCase {
private typealias EmptyResponse = HTTPResponse<HTTPEmptyResponseBody>.Result
let apiKey = "MockAPIKey"
let systemInfo = MockSystemInfo(finishTransactions: true)
var client: HTTPClient!
var userDefaults: UserDefaults!
var eTagManager: MockETagManager!
var operationDispatcher: OperationDispatcher!
override func setUp() {
super.setUp()
userDefaults = MockUserDefaults()
eTagManager = MockETagManager(userDefaults: userDefaults)
operationDispatcher = OperationDispatcher()
MockDNSChecker.resetData()
client = HTTPClient(apiKey: apiKey,
systemInfo: systemInfo,
eTagManager: eTagManager,
dnsChecker: MockDNSChecker.self,
requestTimeout: 3)
}
override func tearDown() {
HTTPStubs.removeAllStubs()
super.tearDown()
}
func testUsesTheCorrectHost() throws {
let hostCorrect: Atomic<Bool> = .init(false)
let host = try XCTUnwrap(SystemInfo.serverHostURL.host)
stub(condition: isHost(host)) { _ in
hostCorrect.value = true
return .emptySuccessResponse
}
let request = HTTPRequest(method: .get, path: .mockPath)
self.client.perform(request) { (_: EmptyResponse) in }
expect(hostCorrect.value).toEventually(equal(true), timeout: .seconds(1))
}
func testPassesHeaders() {
let headerPresent: Atomic<Bool> = .init(false)
stub(condition: hasHeaderNamed("Authorization")) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
let request = HTTPRequest(method: .post([:]), path: .mockPath)
self.client.perform(request) { (_: EmptyResponse) in }
expect(headerPresent.value).toEventually(equal(true), timeout: .seconds(1))
}
func testAlwaysSetsContentTypeHeader() {
let headerPresent: Atomic<Bool> = .init(false)
stub(condition: hasHeaderNamed("content-type", value: "application/json")) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
let request = HTTPRequest(method: .post([:]), path: .mockPath)
self.client.perform(request) { (_: EmptyResponse) in }
expect(headerPresent.value).toEventually(equal(true), timeout: .seconds(1))
}
func testAlwaysPassesPlatformHeader() {
let headerPresent: Atomic<Bool> = .init(false)
stub(condition: hasHeaderNamed("X-Platform", value: SystemInfo.platformHeader)) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
let request = HTTPRequest(method: .post([:]), path: .mockPath)
self.client.perform(request) { (_: EmptyResponse) in }
expect(headerPresent.value).toEventually(equal(true))
}
func testAlwaysPassesVersionHeader() {
let headerPresent: Atomic<Bool> = .init(false)
stub(condition: hasHeaderNamed("X-Version", value: Purchases.frameworkVersion)) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
let request = HTTPRequest(method: .post([:]), path: .mockPath)
self.client.perform(request) { (_: EmptyResponse) in }
expect(headerPresent.value).toEventually(equal(true))
}
func testAlwaysPassesPlatformVersion() {
let headerPresent: Atomic<Bool> = .init(false)
stub(condition: hasHeaderNamed("X-Platform-Version", value: ProcessInfo().operatingSystemVersionString)) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
let request = HTTPRequest(method: .post([:]), path: .mockPath)
self.client.perform(request) { (_: EmptyResponse) in }
expect(headerPresent.value).toEventually(equal(true))
}
func testAlwaysPassesIsSandboxWhenEnabled() {
let headerName = "X-Is-Sandbox"
self.systemInfo.stubbedIsSandbox = true
let header: Atomic<String?> = .init(nil)
stub(condition: hasHeaderNamed(headerName)) { request in
header.value = request.value(forHTTPHeaderField: headerName)
return .emptySuccessResponse
}
let request = HTTPRequest(method: .post([:]), path: .mockPath)
self.client.perform(request) { (_: EmptyResponse) in }
expect(header.value).toEventuallyNot(beNil())
expect(header.value) == "true"
}
func testAlwaysPassesIsSandboxWhenDisabled() {
let headerName = "X-Is-Sandbox"
self.systemInfo.stubbedIsSandbox = false
let header: Atomic<String?> = .init(nil)
stub(condition: hasHeaderNamed(headerName)) { request in
header.value = request.value(forHTTPHeaderField: headerName)
return .emptySuccessResponse
}
let request = HTTPRequest(method: .post([:]), path: .mockPath)
self.client.perform(request) { (_: EmptyResponse) in }
expect(header.value).toEventuallyNot(beNil())
expect(header.value) == "false"
}
func testCallsTheGivenPath() {
let request = HTTPRequest(method: .post([:]), path: .mockPath)
let pathHit: Atomic<Bool> = .init(false)
stub(condition: isPath(request.path)) { _ in
pathHit.value = true
return .emptySuccessResponse
}
self.client.perform(request) { (_: EmptyResponse) in }
expect(pathHit.value).toEventually(equal(true), timeout: .seconds(1))
}
func testSendsBodyData() throws {
let body = ["arg": "value"]
let pathHit: Atomic<Bool> = .init(false)
let bodyData = try JSONSerialization.data(withJSONObject: body)
stub(condition: hasBody(bodyData)) { _ in
pathHit.value = true
return .emptySuccessResponse
}
let request = HTTPRequest(method: .post(body), path: .mockPath)
self.client.perform(request) { (_: EmptyResponse) in }
expect(pathHit.value).toEventually(equal(true))
}
func testCallsCompletionHandlerWhenFinished() {
let request = HTTPRequest(method: .get, path: .mockPath)
let completionCalled: Atomic<Bool> = .init(false)
stub(condition: isPath(request.path)) { _ in
return .emptySuccessResponse
}
self.client.perform(request) { (_: EmptyResponse) in
completionCalled.value = true
}
expect(completionCalled.value).toEventually(equal(true), timeout: .seconds(1))
}
func testHandlesRealErrorConditions() {
let request = HTTPRequest(method: .get, path: .mockPath)
let receivedError: Atomic<NetworkError?> = .init(nil)
let error = NSError(domain: NSURLErrorDomain, code: NSURLErrorUnknown, userInfo: nil)
stub(condition: isPath(request.path)) { _ in
let response = HTTPStubsResponse.emptySuccessResponse
response.error = error
return response
}
self.client.perform(request) { (result: EmptyResponse) in
receivedError.value = result.error
}
expect(receivedError.value).toEventuallyNot(beNil())
switch receivedError.value {
case let .networkError(actualError, _):
expect(actualError.domain) == error.domain
expect(actualError.code) == error.code
default:
fail("Unexpected error: \(String(describing: receivedError.value))")
}
}
func testServerSide400s() throws {
let request = HTTPRequest(method: .get, path: .mockPath)
let errorCode = HTTPStatusCode.invalidRequest.rawValue + Int.random(in: 0..<50)
let result: Atomic<HTTPResponse<Data>.Result?> = .init(nil)
stub(condition: isPath(request.path)) { _ in
let json = "{\"code\": 7101, \"message\": \"something is broken up in the cloud\"}"
return HTTPStubsResponse(
data: json.data(using: String.Encoding.utf8)!,
statusCode: Int32(errorCode),
headers: nil
)
}
self.client.perform(request) { (response: HTTPResponse<Data>.Result) in
result.value = response
}
expect(result.value).toEventuallyNot(beNil(), timeout: .seconds(1))
expect(result.value).to(beFailure())
let error = try XCTUnwrap(result.value?.error)
expect(error) == .errorResponse(
.init(code: .storeProblem, message: "something is broken up in the cloud"),
HTTPStatusCode(rawValue: errorCode)
)
}
func testServerSide500s() throws {
let request = HTTPRequest(method: .get, path: .mockPath)
let errorCode = 500 + Int.random(in: 0..<50)
let result: Atomic<HTTPResponse<Data>.Result?> = .init(nil)
stub(condition: isPath(request.path)) { _ in
let json = "{\"message\": \"something is broken up in the cloud\"}"
return HTTPStubsResponse(
data: json.data(using: String.Encoding.utf8)!,
statusCode: Int32(errorCode),
headers: nil
)
}
self.client.perform(request) { (response: HTTPResponse<Data>.Result) in
result.value = response
}
expect(result.value).toEventuallyNot(beNil(), timeout: .seconds(1))
expect(result.value).to(beFailure())
let error = try XCTUnwrap(result.value?.error)
expect(error) == .errorResponse(
.init(code: .unknownBackendError, message: "something is broken up in the cloud"),
HTTPStatusCode(rawValue: errorCode)
)
}
func testInvalidJSONAsDataDoesNotFail() {
let request = HTTPRequest(method: .get, path: .mockPath)
let statusCode = HTTPStatusCode.success
let data = "{this is not JSON.csdsd".data(using: String.Encoding.utf8)!
let result: Atomic<HTTPResponse<Data>.Result?> = .init(nil)
stub(condition: isPath(request.path)) { _ in
return HTTPStubsResponse(
data: data,
statusCode: Int32(statusCode.rawValue),
headers: nil
)
}
self.client.perform(request) { (response: HTTPResponse<Data>.Result) in
result.value = response
}
expect(result.value).toEventuallyNot(beNil(), timeout: .seconds(1))
expect(result.value).to(beSuccess())
expect(result.value?.value?.body) == data
}
func testParseError() throws {
struct CustomResponse: Decodable, HTTPResponseBody {
let data: String
}
let request = HTTPRequest(method: .get, path: .mockPath)
let errorCode = HTTPStatusCode.success.rawValue
let result: Atomic<HTTPResponse<CustomResponse>.Result?> = .init(nil)
stub(condition: isPath(request.path)) { _ in
let json = "{this is not JSON.csdsd"
return HTTPStubsResponse(
data: json.data(using: String.Encoding.utf8)!,
statusCode: Int32(errorCode),
headers: nil
)
}
self.client.perform(request) { (response: HTTPResponse<CustomResponse>.Result) in
result.value = response
}
expect(result.value).toEventuallyNot(beNil(), timeout: .seconds(1))
expect(result.value).to(beFailure())
let error = try XCTUnwrap(result.value?.error)
switch error {
case .decoding:
break // correct error
default:
fail("Invalid error: \(error)")
}
}
func testServerSide200s() {
let request = HTTPRequest(method: .get, path: .mockPath)
let responseData = "{\"message\": \"something is great up in the cloud\"}".data(using: String.Encoding.utf8)!
let result: Atomic<HTTPResponse<Data>.Result?> = .init(nil)
stub(condition: isPath(request.path)) { _ in
return HTTPStubsResponse(data: responseData,
statusCode: .success,
headers: nil)
}
self.client.perform(request) { (response: HTTPResponse<Data>.Result) in
result.value = response
}
expect(result.value).toEventuallyNot(beNil(), timeout: .seconds(1))
expect(result.value).to(beSuccess())
expect(result.value?.value?.body) == responseData
}
func testResponseDeserialization() throws {
struct CustomResponse: Codable, Equatable, HTTPResponseBody {
let message: String
}
let request = HTTPRequest(method: .get, path: .mockPath)
let response = CustomResponse(message: "Something is great up in the cloud")
let responseData = try JSONEncoder.default.encode(response)
let result: Atomic<HTTPResponse<CustomResponse>.Result?> = .init(nil)
stub(condition: isPath(request.path)) { _ in
return HTTPStubsResponse(data: responseData,
statusCode: .success,
headers: nil)
}
self.client.perform(request) { (response: HTTPResponse<CustomResponse>.Result) in
result.value = response
}
expect(result.value).toEventuallyNot(beNil(), timeout: .seconds(1))
expect(result.value).to(beSuccess())
expect(result.value?.value?.body) == response
expect(result.value?.value?.statusCode) == .success
}
func testAlwaysPassesClientVersion() {
let request = HTTPRequest(method: .post([:]), path: .mockPath)
let headerPresent: Atomic<Bool> = .init(false)
let version = SystemInfo.appVersion
stub(condition: hasHeaderNamed("X-Client-Version", value: version )) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
self.client.perform(request) { (_: HTTPResponse<Data>.Result) in }
expect(headerPresent.value).toEventually(equal(true))
}
func testAlwaysPassesClientBuildVersion() throws {
let request = HTTPRequest(method: .post([:]), path: .mockPath)
let headerPresent: Atomic<Bool> = .init(false)
let version = try XCTUnwrap(Bundle.main.infoDictionary!["CFBundleVersion"] as? String)
stub(condition: hasHeaderNamed("X-Client-Build-Version", value: version )) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
self.client.perform(request) { (_: HTTPResponse<Data>.Result) in }
expect(headerPresent.value).toEventually(equal(true))
}
#if os(macOS) || targetEnvironment(macCatalyst)
func testAlwaysPassesAppleDeviceIdentifierWhenIsSandbox() {
let request = HTTPRequest(method: .get, path: .mockPath)
let headerPresent: Atomic<Bool> = .init(false)
systemInfo.stubbedIsSandbox = true
let idfv = systemInfo.identifierForVendor!
stub(condition: hasHeaderNamed("X-Apple-Device-Identifier", value: idfv )) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
self.client.perform(request) { (_: HTTPResponse<Data>.Result) in }
expect(headerPresent.value).toEventually(equal(true))
}
func testAppleDeviceIdentifierNilWhenIsNotSandbox() {
systemInfo.stubbedIsSandbox = false
let obtainedIdentifierForVendor = systemInfo.identifierForVendor
expect(obtainedIdentifierForVendor).to(beNil())
}
#else
func testAlwaysPassesAppleDeviceIdentifier() {
let request = HTTPRequest(method: .post([:]), path: .mockPath)
let headerPresent: Atomic<Bool> = .init(false)
let idfv = systemInfo.identifierForVendor!
stub(condition: hasHeaderNamed("X-Apple-Device-Identifier", value: idfv )) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
self.client.perform(request) { (_: HTTPResponse<Data>.Result) in }
expect(headerPresent.value).toEventually(equal(true))
}
#endif
func testDefaultsPlatformFlavorToNative() {
let request = HTTPRequest(method: .post([:]), path: .mockPath)
let headerPresent: Atomic<Bool> = .init(false)
stub(condition: hasHeaderNamed("X-Platform-Flavor", value: "native")) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
self.client.perform(request) { (_: HTTPResponse<Data>.Result) in }
expect(headerPresent.value).toEventually(equal(true))
}
func testPassesPlatformFlavorHeader() throws {
let request = HTTPRequest(method: .post([:]), path: .mockPath)
let headerPresent: Atomic<Bool> = .init(false)
stub(condition: hasHeaderNamed("X-Platform-Flavor", value: "react-native")) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
let platformInfo = Purchases.PlatformInfo(flavor: "react-native", version: "3.2.1")
let systemInfo = try SystemInfo(platformInfo: platformInfo,
finishTransactions: true)
let client = HTTPClient(apiKey: self.apiKey, systemInfo: systemInfo, eTagManager: eTagManager)
client.perform(request) { (_: HTTPResponse<Data>.Result) in }
expect(headerPresent.value).toEventually(equal(true))
}
func testPassesPlatformFlavorVersionHeader() throws {
let request = HTTPRequest(method: .post([:]), path: .mockPath)
let headerPresent: Atomic<Bool> = .init(false)
stub(condition: hasHeaderNamed("X-Platform-Flavor-Version", value: "1.2.3")) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
let platformInfo = Purchases.PlatformInfo(flavor: "react-native", version: "1.2.3")
let systemInfo = try SystemInfo(platformInfo: platformInfo,
finishTransactions: true)
let client = HTTPClient(apiKey: self.apiKey, systemInfo: systemInfo, eTagManager: eTagManager)
client.perform(request) { (_: HTTPResponse<Data>.Result) in }
expect(headerPresent.value).toEventually(equal(true))
}
func testPassesObserverModeHeaderCorrectlyWhenEnabled() throws {
let request = HTTPRequest(method: .post([:]), path: .mockPath)
let headerPresent: Atomic<Bool> = .init(false)
stub(condition: hasHeaderNamed("X-Observer-Mode-Enabled", value: "false")) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
let systemInfo = try SystemInfo(platformInfo: nil, finishTransactions: true)
let client = HTTPClient(apiKey: self.apiKey, systemInfo: systemInfo, eTagManager: eTagManager)
client.perform(request) { (_: HTTPResponse<Data>.Result) in }
expect(headerPresent.value).toEventually(equal(true))
}
func testPassesObserverModeHeaderCorrectlyWhenDisabled() throws {
let request = HTTPRequest(method: .post([:]), path: .mockPath)
let headerPresent: Atomic<Bool> = .init(false)
stub(condition: hasHeaderNamed("X-Observer-Mode-Enabled", value: "true")) { _ in
headerPresent.value = true
return .emptySuccessResponse
}
let systemInfo = try SystemInfo(platformInfo: nil, finishTransactions: false)
let client = HTTPClient(apiKey: self.apiKey, systemInfo: systemInfo, eTagManager: eTagManager)
client.perform(request) { (_: HTTPResponse<Data>.Result) in }
expect(headerPresent.value).toEventually(equal(true))
}
func testPerformSerialRequestPerformsAllRequestsInTheCorrectOrder() {
let path: HTTPRequest.Path = .mockPath
let completionCallCount: Atomic<Int> = .init(0)
stub(condition: isPath(path)) { request in
let requestNumber = self.extractRequestNumber(from: request)
expect(requestNumber) == completionCallCount.value
let json = "{\"message\": \"something is great up in the cloud\"}"
return HTTPStubsResponse(data: json.asData,
statusCode: .success,
headers: nil)
.responseTime(0.003)
}
let serialRequests = 10
for requestNumber in 0..<serialRequests {
client.perform(.init(method: .requestNumber(requestNumber), path: path)) { (_: HTTPResponse<Data>.Result) in
completionCallCount.value += 1
}
}
expect(completionCallCount.value).toEventually(equal(serialRequests), timeout: .seconds(5))
}
func testPerformSerialRequestWaitsUntilFirstRequestIsDoneBeforeStartingSecond() {
let path: HTTPRequest.Path = .mockPath
let firstRequestFinished: Atomic<Bool> = .init(false)
let secondRequestFinished: Atomic<Bool> = .init(false)
stub(condition: isPath(path)) { request in
usleep(30)
let requestNumber = self.extractRequestNumber(from: request)
if requestNumber == 2 {
expect(firstRequestFinished.value) == true
}
let json = "{\"message\": \"something is great up in the cloud\"}"
return HTTPStubsResponse(data: json.data(using: String.Encoding.utf8)!,
statusCode: .success,
headers: nil)
.responseTime(0.1)
}
self.client.perform(.init(method: .requestNumber(1), path: path)) { (_: HTTPResponse<Data>.Result) in
firstRequestFinished.value = true
}
self.client.perform(.init(method: .requestNumber(2), path: path)) { (_: HTTPResponse<Data>.Result) in
secondRequestFinished.value = true
}
expect(firstRequestFinished.value).toEventually(beTrue())
expect(secondRequestFinished.value).toEventually(beTrue())
}
func testPerformSerialRequestWaitsUntilRequestsAreDoneBeforeStartingNext() {
let path: HTTPRequest.Path = .mockPath
let firstRequestFinished: Atomic<Bool> = .init(false)
let secondRequestFinished: Atomic<Bool> = .init(false)
let thirdRequestFinished: Atomic<Bool> = .init(false)
stub(condition: isPath(path)) { request in
let requestNumber = self.extractRequestNumber(from: request)
var responseTime = 0.5
if requestNumber == 1 {
expect(secondRequestFinished.value) == false
expect(thirdRequestFinished.value) == false
} else if requestNumber == 2 {
expect(firstRequestFinished.value) == true
expect(thirdRequestFinished.value) == false
responseTime = 0.3
} else if requestNumber == 3 {
expect(firstRequestFinished.value) == true
expect(secondRequestFinished.value) == true
responseTime = 0.1
}
let json = "{\"message\": \"something is great up in the cloud\"}"
return HTTPStubsResponse(data: json.asData,
statusCode: .success,
headers: nil)
.responseTime(responseTime)
}
self.client.perform(.init(method: .requestNumber(1), path: path)) { (_: HTTPResponse<Data>.Result) in
firstRequestFinished.value = true
}
self.client.perform(.init(method: .requestNumber(2), path: path)) { (_: HTTPResponse<Data>.Result) in
secondRequestFinished.value = true
}
self.client.perform(.init(method: .requestNumber(3), path: path)) { (_: HTTPResponse<Data>.Result) in
thirdRequestFinished.value = true
}
expect(firstRequestFinished.value).toEventually(beTrue(), timeout: .seconds(1))
expect(secondRequestFinished.value).toEventually(beTrue(), timeout: .seconds(2))
expect(thirdRequestFinished.value).toEventually(beTrue(), timeout: .seconds(3))
}
func testPerformRequestExitsWithErrorIfBodyCouldntBeParsedIntoJSON() throws {
let response: Atomic<HTTPResponse<Data>.Result?> = .init(nil)
self.client.perform(.init(method: .invalidBody(), path: .mockPath)) { (result: HTTPResponse<Data>.Result) in
response.value = result
}
expect(response).toEventuallyNot(beNil())
let error = try XCTUnwrap(response.value?.error)
expect(error) == .unableToCreateRequest(.mockPath)
}
func testPerformRequestDoesntPerformRequestIfBodyCouldntBeParsedIntoJSON() {
let path: HTTPRequest.Path = .mockPath
let completionCalled: Atomic<Bool> = .init(false)
let httpCallMade: Atomic<Bool> = .init(false)
stub(condition: isPath(path)) { _ in
httpCallMade.value = true
return .emptySuccessResponse
}
self.client.perform(.init(method: .invalidBody(), path: path)) { (_: HTTPResponse<Data>.Result) in
completionCalled.value = true
}
expect(completionCalled.value).toEventually(beTrue())
expect(httpCallMade.value).toEventually(beFalse())
}
func testRequestIsRetriedIfResponseFromETagManagerIsNil() {
let path: HTTPRequest.Path = .mockPath
let completionCalled: Atomic<Bool> = .init(false)
let firstTimeCalled: Atomic<Bool> = .init(false)
stub(condition: isPath(path)) { _ in
if firstTimeCalled.value {
self.eTagManager.shouldReturnResultFromBackend = true
}
firstTimeCalled.value = true
return .emptySuccessResponse
}
self.eTagManager.shouldReturnResultFromBackend = false
self.eTagManager.stubbedHTTPResultFromCacheOrBackendResult = nil
self.client.perform(.init(method: .get, path: path)) { (_: HTTPResponse<Data>.Result) in
completionCalled.value = true
}
expect(completionCalled.value).toEventually(equal(true), timeout: .seconds(1))
}
func testGetsResponseFromETagManagerWhenStatusCodeIsNotModified() throws {
let path: HTTPRequest.Path = .mockPath
let mockedCachedResponse = try JSONSerialization.data(withJSONObject: [
"test": "data"
])
let response: Atomic<HTTPResponse<Data>.Result?> = .init(nil)
self.eTagManager.shouldReturnResultFromBackend = false
self.eTagManager.stubbedHTTPResultFromCacheOrBackendResult = .init(
statusCode: .success,
body: mockedCachedResponse
)
stub(condition: isPath(path)) { _ in
return .init(data: Data(),
statusCode: .notModified,
headers: nil)
}
self.client.perform(.init(method: .get, path: path)) { (result: HTTPResponse<Data>.Result) in
response.value = result
}
expect(response.value).toEventuallyNot(beNil(), timeout: .seconds(1))
expect(response.value?.value?.statusCode) == .success
expect(response.value?.value?.body) == mockedCachedResponse
}
func testDNSCheckerIsCalledWhenGETRequestFailedWithUnknownError() {
let path: HTTPRequest.Path = .mockPath
let error = NSError(domain: NSURLErrorDomain, code: NSURLErrorUnknown, userInfo: nil)
MockDNSChecker.stubbedIsBlockedAPIErrorResult.value = false
stub(condition: isPath(path)) { _ in
let response = HTTPStubsResponse.emptySuccessResponse
response.error = error
return response
}
self.client.perform(.init(method: .get, path: path)) { (_: HTTPResponse<Data>.Result) in }
expect(MockDNSChecker.invokedIsBlockedAPIError.value).toEventually(equal(true))
expect(MockDNSChecker.invokedErrorWithBlockedHostFromError.value).toEventually(equal(false))
}
func testDNSCheckerIsCalledWhenPOSTRequestFailedWithUnknownError() {
let path: HTTPRequest.Path = .mockPath
let error = NSError(domain: NSURLErrorDomain, code: NSURLErrorUnknown, userInfo: nil)
MockDNSChecker.stubbedIsBlockedAPIErrorResult.value = false
stub(condition: isPath(path)) { _ in
let response = HTTPStubsResponse.emptySuccessResponse
response.error = error
return response
}
self.client.perform(.init(method: .post([:]), path: path)) { (_: HTTPResponse<Data>.Result) in
}
expect(MockDNSChecker.invokedIsBlockedAPIError.value).toEventually(equal(true))
expect(MockDNSChecker.invokedErrorWithBlockedHostFromError.value).toEventually(equal(false))
}
func testDNSCheckedIsCalledWhenPOSTRequestFailedWithDNSError() {
let path: HTTPRequest.Path = .mockPath
let fakeSubscribersURL = URL(string: "https://0.0.0.0/subscribers")!
let userInfo: [String: Any] = [NSURLErrorFailingURLErrorKey: fakeSubscribersURL]
let nsErrorWithUserInfo = NSError(domain: NSURLErrorDomain,
code: NSURLErrorCannotConnectToHost,
userInfo: userInfo as [String: Any])
MockDNSChecker.stubbedIsBlockedAPIErrorResult.value = true
stub(condition: isPath(path)) { _ in
let response = HTTPStubsResponse.emptySuccessResponse
response.error = nsErrorWithUserInfo
return response
}
self.client.perform(.init(method: .post([:]), path: path)) { (_: HTTPResponse<Data>.Result) in
}
expect(MockDNSChecker.invokedIsBlockedAPIError.value).toEventually(equal(true))
expect(MockDNSChecker.invokedErrorWithBlockedHostFromError.value).toEventually(equal(true))
}
func testDNSCheckedIsCalledWhenGETRequestFailedWithDNSError() {
let path: HTTPRequest.Path = .mockPath
let fakeSubscribersURL = URL(string: "https://0.0.0.0/subscribers")!
let userInfo: [String: Any] = [NSURLErrorFailingURLErrorKey: fakeSubscribersURL]
let nsErrorWithUserInfo = NSError(domain: NSURLErrorDomain,
code: NSURLErrorCannotConnectToHost,
userInfo: userInfo as [String: Any])
MockDNSChecker.stubbedIsBlockedAPIErrorResult.value = true
stub(condition: isPath(path)) { _ in
let response = HTTPStubsResponse.emptySuccessResponse
response.error = nsErrorWithUserInfo
return response
}
self.client.perform(.init(method: .get, path: path)) { (_: HTTPResponse<Data>.Result) in }
expect(MockDNSChecker.invokedIsBlockedAPIError.value).toEventually(equal(true))
expect(MockDNSChecker.invokedErrorWithBlockedHostFromError.value).toEventually(equal(true))
}
func testOfflineConnectionError() {
let path: HTTPRequest.Path = .mockPath
let error = NSError(domain: NSURLErrorDomain, code: NSURLErrorNotConnectedToInternet)
stub(condition: isPath(path)) { _ in
let response = HTTPStubsResponse.emptySuccessResponse
response.error = error
return response
}
let obtainedError: Atomic<NetworkError?> = .init(nil)
self.client.perform(.init(method: .get, path: path)) { (result: HTTPResponse<Data>.Result) in
obtainedError.value = result.error
}
expect(obtainedError.value).toEventuallyNot(beNil())
expect(obtainedError.value) == .offlineConnection()
}
func testErrorIsLoggedAndReturnsDNSErrorWhenGETRequestFailedWithDNSError() {
let path: HTTPRequest.Path = .mockPath
let error = NSError(domain: NSURLErrorDomain, code: NSURLErrorUnknown, userInfo: nil)
let expectedDNSError: NetworkError = .dnsError(
failedURL: URL(string: "https://0.0.0.0/subscribers")!,
resolvedHost: "0.0.0.0"
)
MockDNSChecker.stubbedIsBlockedAPIErrorResult.value = true
MockDNSChecker.stubbedErrorWithBlockedHostFromErrorResult.value = expectedDNSError
let expectedMessage = "\(LogIntent.rcError.prefix) \(expectedDNSError.description)"
var loggedMessages = [String]()
let originalLogHandler = Logger.logHandler
Logger.logHandler = { _, message, _, _, _ in
loggedMessages.append(message)
}
defer { Logger.logHandler = originalLogHandler }
stub(condition: isPath(path)) { _ in
let response = HTTPStubsResponse.emptySuccessResponse
response.error = error
return response
}
let obtainedError: Atomic<NetworkError?> = .init(nil)
self.client.perform(.init(method: .get, path: path)) { (result: HTTPResponse<Data>.Result) in
obtainedError.value = result.error
}
expect(MockDNSChecker.invokedIsBlockedAPIError.value).toEventually(equal(true))
expect(MockDNSChecker.invokedErrorWithBlockedHostFromError.value).toEventually(equal(true))
expect(obtainedError.value).toEventually(equal(expectedDNSError))
expect(loggedMessages).toEventually(contain(expectedMessage))
}
func testErrorIsntLoggedWhenGETRequestFailedWithUnknownError() {
let path: HTTPRequest.Path = .mockPath
let error = NSError(domain: NSURLErrorDomain, code: NSURLErrorUnknown, userInfo: nil)
let unexpectedDNSError: NetworkError = .dnsError(
failedURL: URL(string: "https://0.0.0.0/subscribers")!,
resolvedHost: "0.0.0.0"
)
MockDNSChecker.stubbedIsBlockedAPIErrorResult.value = false
var loggedMessages = [String]()
let originalLogHandler = Logger.logHandler
Logger.logHandler = { _, message, _, _, _ in
loggedMessages.append(message)
}
stub(condition: isPath(path)) { _ in
let response = HTTPStubsResponse.emptySuccessResponse
response.error = error
return response
}
self.client.perform(.init(method: .get, path: path)) { (_: HTTPResponse<Data>.Result) in }
expect(MockDNSChecker.invokedIsBlockedAPIError.value).toEventually(equal(true))
expect(MockDNSChecker.invokedErrorWithBlockedHostFromError.value).toEventually(equal(false))
expect(loggedMessages).toNotEventually(contain(unexpectedDNSError.description))
Logger.logHandler = originalLogHandler
}
}
// MARK: - Extensions
private extension HTTPRequest.Path {
// Doesn't matter which path this is, we stub requests to it.
static let mockPath: Self = .logIn
}
extension HTTPRequest.Method {
fileprivate static func requestNumber(_ number: Int) -> Self {
return .post([HTTPClientTests.requestNumberKeyName: number])
}
fileprivate static func invalidBody() -> Self {
// infinity can't be cast into JSON, so we use it to force a parsing exception. See:
// https://developer.apple.com/documentation/foundation/nsjsonserialization?language=objc
let nonJSONBody = ["something": Double.infinity]
return .post(nonJSONBody)
}
/// Creates a `HTTPRequest.Method.post` request with `[String: Any]`.
/// - Note: this is for testing only, real requests must use `Encodable`.
internal static func post(_ body: [String: Any]) -> Self {
return .post(AnyEncodable(body))
}
}
private extension HTTPClientTests {
func extractRequestNumber(from urlRequest: URLRequest) -> Int? {
do {
let requestData = urlRequest.ohhttpStubs_httpBody!
let requestBodyDict = try XCTUnwrap(try JSONSerialization.jsonObject(with: requestData,
options: []) as? [String: Any])
return try XCTUnwrap(requestBodyDict[Self.requestNumberKeyName] as? Int)
} catch {
XCTFail("Couldn't extract the request number from the URLRequest")
return nil
}
}
static let requestNumberKeyName = "request_number"
}
private func isPath(_ path: HTTPRequest.Path) -> HTTPStubsTestBlock {
return isPath(path.relativePath)
}
private extension HTTPStubsResponse {
static let emptySuccessResponse: HTTPStubsResponse = .init(data: Data(),
statusCode: .success,
headers: nil)
convenience init(data: Data, statusCode: HTTPStatusCode, headers: HTTPClient.RequestHeaders?) {
self.init(data: data, statusCode: Int32(statusCode.rawValue), headers: headers)
}
}