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DataStreamTests.swift
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//
// DataStreamTests.swift
//
// Copyright (c) 2020 Alamofire Software Foundation (http://alamofire.org/)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
import Alamofire
import XCTest
final class DataStreamTests: BaseTestCase {
func testThatDataCanBeStreamedOnMainQueue() {
// Given
let expectedSize = 10
var accumulatedData = Data()
var response: HTTPURLResponse?
var streamOnMain = false
var completeOnMain = false
let didReceive = expectation(description: "stream should receive once")
let didComplete = expectation(description: "stream should complete")
// When
AF.streamRequest(.bytes(expectedSize)).responseStream { stream in
switch stream.event {
case let .stream(result):
streamOnMain = Thread.isMainThread
switch result {
case let .success(data):
accumulatedData.append(data)
}
didReceive.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
response = completion.response
didComplete.fulfill()
}
}
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertEqual(response?.statusCode, 200)
XCTAssertEqual(accumulatedData.count, expectedSize)
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
}
func testThatDataCanBeStreamedByByte() {
// Given
let expectedSize = 10
var accumulatedData = Data()
var response: HTTPURLResponse?
var streamOnMain = false
var completeOnMain = false
var streamCalled = 0
let didReceive = expectation(description: "stream should receive once")
if #available(macOS 10.15, iOS 13, tvOS 13, watchOS 6, *) {
didReceive.expectedFulfillmentCount = expectedSize
}
let didComplete = expectation(description: "stream should complete")
// When
AF.streamRequest(.chunked(expectedSize)).responseStream { stream in
switch stream.event {
case let .stream(result):
streamOnMain = Thread.isMainThread
switch result {
case let .success(data):
accumulatedData.append(data)
}
streamCalled += 1
didReceive.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
response = completion.response
didComplete.fulfill()
}
}
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertEqual(response?.statusCode, 200)
// Older OSes don't return individual bytes.
if #available(macOS 10.15, iOS 13, tvOS 13, watchOS 6, *) {
XCTAssertEqual(streamCalled, expectedSize)
} else {
XCTAssertEqual(streamCalled, 1)
}
XCTAssertEqual(accumulatedData.count, expectedSize)
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
}
func testThatDataCanBeStreamedAsMultipleJSONPayloads() throws {
guard #available(macOS 10.15, iOS 13, tvOS 13, watchOS 6, *) else {
throw XCTSkip("Older OSes do not separate chunked payloads in callbacks.")
}
// Given
let expectedSize = 10
var responses: [TestResponse] = []
var response: HTTPURLResponse?
var streamOnMain = false
var completeOnMain = false
var streamCalled = 0
let didReceive = expectation(description: "stream should receive once")
didReceive.expectedFulfillmentCount = expectedSize
let didComplete = expectation(description: "stream should complete")
// When
AF.streamRequest(.payloads(expectedSize))
.responseStreamDecodable(of: TestResponse.self) { stream in
switch stream.event {
case let .stream(result):
streamOnMain = Thread.isMainThread
switch result {
case let .success(value):
responses.append(value)
case let .failure(error):
XCTFail("JSON stream failed due to error: \(error.localizedDescription)")
}
streamCalled += 1
didReceive.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
response = completion.response
didComplete.fulfill()
}
}
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertEqual(response?.statusCode, 200)
XCTAssertEqual(streamCalled, expectedSize)
XCTAssertEqual(responses.count, expectedSize)
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
}
func testThatDataCanBeStreamedFromURL() {
// Given
let expectedSize = 1
var accumulatedData = Data()
var response: HTTPURLResponse?
var streamOnMain = false
var completeOnMain = false
let didReceive = expectation(description: "stream should receive")
let didComplete = expectation(description: "stream should complete")
// When
AF.streamRequest(.bytes(expectedSize)).responseStream { stream in
switch stream.event {
case let .stream(result):
streamOnMain = Thread.isMainThread
switch result {
case let .success(data):
accumulatedData.append(data)
}
didReceive.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
response = completion.response
didComplete.fulfill()
}
}
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertEqual(response?.statusCode, 200)
XCTAssertEqual(accumulatedData.count, expectedSize)
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
}
func testThatDataCanBeStreamedManyTimes() {
// Given
let expectedSize = 1
var firstAccumulatedData = Data()
var firstResponse: HTTPURLResponse?
var firstStreamOnMain = false
var firstCompleteOnMain = false
let firstReceive = expectation(description: "first stream should receive")
let firstCompletion = expectation(description: "first stream should complete")
var secondAccumulatedData = Data()
var secondResponse: HTTPURLResponse?
var secondStreamOnMain = false
var secondCompleteOnMain = false
let secondReceive = expectation(description: "second stream should receive")
let secondCompletion = expectation(description: "second stream should complete")
// When
AF.streamRequest(.bytes(expectedSize))
.responseStream { stream in
switch stream.event {
case let .stream(result):
firstStreamOnMain = Thread.isMainThread
switch result {
case let .success(data):
firstAccumulatedData.append(data)
}
firstReceive.fulfill()
case let .complete(completion):
firstCompleteOnMain = Thread.isMainThread
firstResponse = completion.response
firstCompletion.fulfill()
}
}
.responseStream { stream in
switch stream.event {
case let .stream(result):
secondStreamOnMain = Thread.isMainThread
switch result {
case let .success(data):
secondAccumulatedData.append(data)
}
secondReceive.fulfill()
case let .complete(completion):
secondCompleteOnMain = Thread.isMainThread
secondResponse = completion.response
secondCompletion.fulfill()
}
}
wait(for: [firstReceive, firstCompletion], timeout: timeout, enforceOrder: true)
wait(for: [secondReceive, secondCompletion], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(firstStreamOnMain)
XCTAssertTrue(firstCompleteOnMain)
XCTAssertEqual(firstResponse?.statusCode, 200)
XCTAssertEqual(firstAccumulatedData.count, expectedSize)
XCTAssertTrue(secondStreamOnMain)
XCTAssertTrue(secondCompleteOnMain)
XCTAssertEqual(secondResponse?.statusCode, 200)
XCTAssertEqual(secondAccumulatedData.count, expectedSize)
}
func testThatDataCanBeStreamedAndDecodedAtTheSameTime() {
// Given
var firstAccumulatedData = Data()
var firstResponse: HTTPURLResponse?
var firstStreamOnMain = false
var firstCompleteOnMain = false
let firstReceive = expectation(description: "first stream should receive")
let firstCompletion = expectation(description: "first stream should complete")
var decodedResponse: TestResponse?
var decodingError: AFError?
var secondResponse: HTTPURLResponse?
var secondStreamOnMain = false
var secondCompleteOnMain = false
let secondReceive = expectation(description: "second stream should receive")
let secondCompletion = expectation(description: "second stream should complete")
// When
AF.streamRequest(.stream(1))
.responseStream { stream in
switch stream.event {
case let .stream(result):
firstStreamOnMain = Thread.isMainThread
switch result {
case let .success(data):
firstAccumulatedData.append(data)
}
firstReceive.fulfill()
case let .complete(completion):
firstCompleteOnMain = Thread.isMainThread
firstResponse = completion.response
firstCompletion.fulfill()
}
}
.responseStreamDecodable(of: TestResponse.self) { stream in
switch stream.event {
case let .stream(result):
secondStreamOnMain = Thread.isMainThread
switch result {
case let .success(value):
decodedResponse = value
case let .failure(error):
decodingError = error
}
secondReceive.fulfill()
case let .complete(completion):
secondCompleteOnMain = Thread.isMainThread
secondResponse = completion.response
secondCompletion.fulfill()
}
}
wait(for: [firstReceive, firstCompletion], timeout: timeout, enforceOrder: true)
wait(for: [secondReceive, secondCompletion], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(firstStreamOnMain)
XCTAssertTrue(firstCompleteOnMain)
XCTAssertEqual(firstResponse?.statusCode, 200)
XCTAssertTrue(!firstAccumulatedData.isEmpty)
XCTAssertTrue(secondStreamOnMain)
XCTAssertTrue(secondCompleteOnMain)
XCTAssertEqual(secondResponse?.statusCode, 200)
XCTAssertNotNil(decodedResponse)
XCTAssertNil(decodingError)
}
#if !(os(Linux) || os(Windows))
func testThatDataStreamRequestProducesWorkingInputStream() {
// Given
let expect = expectation(description: "stream complete")
// When
let stream = AF.streamRequest(.xml)
.responseStream { stream in
switch stream.event {
case .complete:
expect.fulfill()
default: break
}
}.asInputStream()
waitForExpectations(timeout: timeout)
// Then
let parser = XMLParser(stream: stream!)
let parsed = parser.parse()
XCTAssertTrue(parsed)
XCTAssertNil(parser.parserError)
}
#endif
func testThatDataStreamCanBeManuallyResumed() {
// Given
let session = Session(startRequestsImmediately: false)
var response: HTTPURLResponse?
var streamOnMain = false
var completeOnMain = false
let didReceive = expectation(description: "stream did receive")
let didComplete = expectation(description: "stream complete")
// When
session.streamRequest(.stream(1))
.responseStream { stream in
switch stream.event {
case .stream:
streamOnMain = Thread.isMainThread
didReceive.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
response = completion.response
didComplete.fulfill()
}
}.resume()
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
XCTAssertEqual(response?.statusCode, 200)
}
func testThatDataStreamIsAutomaticallyCanceledOnStreamErrorWhenEnabled() {
var response: HTTPURLResponse?
var complete: DataStreamRequest.Completion?
let didComplete = expectation(description: "stream complete")
// When
AF.streamRequest(.bytes(50), automaticallyCancelOnStreamError: true)
.responseStreamDecodable(of: TestResponse.self) { stream in
switch stream.event {
case let .complete(completion):
complete = completion
response = completion.response
didComplete.fulfill()
default: break
}
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertEqual(response?.statusCode, 200)
XCTAssertTrue(complete?.error?.isExplicitlyCancelledError == true,
"error is not explicitly cancelled but \(complete?.error?.localizedDescription ?? "None")")
}
func testThatDataStreamIsAutomaticallyCanceledOnStreamClosureError() {
// Given
enum LocalError: Error { case failed }
var response: HTTPURLResponse?
var complete: DataStreamRequest.Completion?
let didReceive = expectation(description: "stream did receieve")
let didComplete = expectation(description: "stream complete")
// When
AF.streamRequest(.bytes(50))
.responseStream { stream in
switch stream.event {
case .stream:
didReceive.fulfill()
throw LocalError.failed
case let .complete(completion):
complete = completion
response = completion.response
didComplete.fulfill()
}
}
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertEqual(response?.statusCode, 200)
XCTAssertTrue(complete?.error?.isExplicitlyCancelledError == false)
}
func testThatDataStreamCanBeCancelledInClosure() {
// Given
// Use .main so that completion can't beat cancellation.
let session = Session(rootQueue: .main)
var completion: DataStreamRequest.Completion?
let didReceive = expectation(description: "stream should receive")
let didComplete = expectation(description: "stream should complete")
// When
session.streamRequest(.bytes(1)).responseStream { stream in
switch stream.event {
case .stream:
didReceive.fulfill()
stream.cancel()
case .complete:
completion = stream.completion
didComplete.fulfill()
}
}
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(completion?.error?.isExplicitlyCancelledError == true,
"""
error is not explicitly cancelled, instead: \(completion?.error?.localizedDescription ?? "none").
response is: \(completion?.response?.description ?? "none").
""")
}
func testThatDataStreamCanBeCancelledByToken() {
// Given
// Use .main so that completion can't beat cancellation.
let session = Session(rootQueue: .main)
var completion: DataStreamRequest.Completion?
let didReceive = expectation(description: "stream should receive")
let didComplete = expectation(description: "stream should complete")
// When
session.streamRequest(.bytes(1)).responseStream { stream in
switch stream.event {
case .stream:
didReceive.fulfill()
stream.token.cancel()
case .complete:
completion = stream.completion
didComplete.fulfill()
}
}
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(completion?.error?.isExplicitlyCancelledError == true,
"""
error is not explicitly cancelled, instead: \(completion?.error?.localizedDescription ?? "none").
response is: \(completion?.response?.description ?? "none").
""")
}
}
// MARK: - Serialization Tests
final class DataStreamSerializationTests: BaseTestCase {
func testThatDataStreamsCanBeAString() {
// Given
var responseString: String?
var streamOnMain = false
var completeOnMain = false
var response: HTTPURLResponse?
let didStream = expectation(description: "did stream")
let didComplete = expectation(description: "stream complete")
// When
AF.streamRequest(.stream(1))
.responseStreamString { stream in
switch stream.event {
case let .stream(result):
streamOnMain = Thread.isMainThread
switch result {
case let .success(string):
responseString = string
}
didStream.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
response = completion.response
didComplete.fulfill()
}
}
wait(for: [didStream, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
XCTAssertNotNil(responseString)
XCTAssertEqual(response?.statusCode, 200)
}
func testThatDataStreamsCanBeDecoded() {
// Given
var response: TestResponse?
var httpResponse: HTTPURLResponse?
var decodingError: AFError?
var streamOnMain = false
var completeOnMain = false
let didReceive = expectation(description: "stream did receive")
let didComplete = expectation(description: "stream complete")
// When
AF.streamRequest(.stream(1))
.responseStreamDecodable(of: TestResponse.self) { stream in
switch stream.event {
case let .stream(result):
streamOnMain = Thread.isMainThread
switch result {
case let .success(value):
response = value
case let .failure(error):
decodingError = error
}
didReceive.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
httpResponse = completion.response
didComplete.fulfill()
}
}
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
XCTAssertNotNil(response)
XCTAssertEqual(httpResponse?.statusCode, 200)
XCTAssertNil(decodingError)
}
func testThatDataStreamSerializerCanBeUsedDirectly() {
// Given
var response: HTTPURLResponse?
var decodedResponse: TestResponse?
var decodingError: AFError?
var streamOnMain = false
var completeOnMain = false
let serializer = DecodableStreamSerializer<TestResponse>()
let didReceive = expectation(description: "stream did receive")
let didComplete = expectation(description: "stream complete")
// When
AF.streamRequest(.stream(1))
.responseStream(using: serializer) { stream in
switch stream.event {
case let .stream(result):
streamOnMain = Thread.isMainThread
switch result {
case let .success(value):
decodedResponse = value
case let .failure(error):
decodingError = error
}
didReceive.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
response = completion.response
didComplete.fulfill()
}
}
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
XCTAssertNotNil(decodedResponse)
XCTAssertEqual(response?.statusCode, 200)
XCTAssertNil(decodingError)
}
}
// MARK: - Integration Tests
final class DataStreamIntegrationTests: BaseTestCase {
func testThatDataStreamCanFailValidation() {
// Given
var dataSeen = false
var error: AFError?
let didComplete = expectation(description: "stream should complete")
// When
AF.streamRequest(.status(401))
.validate()
.responseStream { stream in
switch stream.event {
case .stream:
dataSeen = true
case let .complete(completion):
error = completion.error
didComplete.fulfill()
}
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(error, "error should not be nil")
XCTAssertTrue(error?.isResponseValidationError == true, "error should be response validation error")
XCTAssertFalse(dataSeen, "no data should be seen")
}
func testThatDataStreamsCanBeRetried() {
// Given
final class GoodRetry: RequestInterceptor {
var hasRetried = false
func adapt(_ urlRequest: URLRequest, for session: Session, completion: @escaping (Result<URLRequest, Error>) -> Void) {
if hasRetried {
completion(.success(Endpoint.bytes(1000).urlRequest))
} else {
completion(.success(urlRequest))
}
}
func retry(_ request: Request, for session: Session, dueTo error: Error, completion: @escaping (RetryResult) -> Void) {
hasRetried = true
completion(.retry)
}
}
let session = Session(interceptor: GoodRetry())
var accumulatedData = Data()
var streamOnMain = false
var completeOnMain = false
var response: HTTPURLResponse?
let didReceive = expectation(description: "stream should receive")
let didComplete = expectation(description: "stream should complete")
// When
session.streamRequest(.status(401))
.validate()
.responseStream { stream in
switch stream.event {
case let .stream(result):
streamOnMain = Thread.isMainThread
switch result {
case let .success(data):
accumulatedData.append(data)
}
didReceive.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
response = completion.response
didComplete.fulfill()
}
}
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
XCTAssertEqual(accumulatedData.count, 1000)
XCTAssertEqual(response?.statusCode, 200)
}
func testThatDataStreamCanBeRedirected() {
// Given
var response: HTTPURLResponse?
var decodedResponse: TestResponse?
var decodingError: AFError?
var streamOnMain = false
var completeOnMain = false
let didRedirect = expectation(description: "stream redirected")
let redirector = Redirector(behavior: .modify { _, _, _ in
didRedirect.fulfill()
return Endpoint.stream(1).urlRequest
})
let didReceive = expectation(description: "stream should receive")
let didComplete = expectation(description: "stream should complete")
// When
AF.streamRequest(.status(301))
.redirect(using: redirector)
.responseStreamDecodable(of: TestResponse.self) { stream in
switch stream.event {
case let .stream(result):
streamOnMain = Thread.isMainThread
switch result {
case let .success(value):
decodedResponse = value
case let .failure(error):
decodingError = error
}
didReceive.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
response = completion.response
didComplete.fulfill()
}
}
wait(for: [didRedirect, didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
XCTAssertNotNil(decodedResponse)
XCTAssertEqual(response?.statusCode, 200)
XCTAssertNil(decodingError)
}
func testThatDataStreamCallsCachedResponseHandler() {
// Given
var response: HTTPURLResponse?
var decodedResponse: TestResponse?
var decodingError: AFError?
var streamOnMain = false
var completeOnMain = false
let cached = expectation(description: "stream called cacher")
let cacher = ResponseCacher(behavior: .modify { _, _ in
cached.fulfill()
return nil
})
let didReceive = expectation(description: "stream did receive")
let didComplete = expectation(description: "stream complete")
// When
AF.streamRequest(.stream(1))
.cacheResponse(using: cacher)
.responseStreamDecodable(of: TestResponse.self) { stream in
switch stream.event {
case let .stream(result):
streamOnMain = Thread.isMainThread
switch result {
case let .success(value):
decodedResponse = value
case let .failure(error):
decodingError = error
}
didReceive.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
response = completion.response
didComplete.fulfill()
}
}
// willCacheResponse called after receiving all Data, so may be called before or after the asynchronous stream
// handlers.
wait(for: [cached], timeout: timeout)
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
XCTAssertNotNil(decodedResponse)
XCTAssertEqual(response?.statusCode, 200)
XCTAssertNil(decodingError)
}
func testThatDataStreamWorksCorrectlyWithMultipleSerialQueues() {
// Given
let requestQueue = DispatchQueue(label: "org.alamofire.testRequestQueue")
let serializationQueue = DispatchQueue(label: "org.alamofire.testSerializationQueue")
let session = Session(requestQueue: requestQueue, serializationQueue: serializationQueue)
var firstResponse: HTTPURLResponse?
var firstDecodedResponse: TestResponse?
var firstDecodingError: AFError?
var firstStreamOnMain = false
var firstCompleteOnMain = false
let firstStream = expectation(description: "first stream")
let firstDidReceive = expectation(description: "first stream did receive")
let firstDidComplete = expectation(description: "first stream complete")
var secondResponse: HTTPURLResponse?
var secondDecodedResponse: TestResponse?
var secondDecodingError: AFError?
var secondStreamOnMain = false
var secondCompleteOnMain = false
let secondStream = expectation(description: "second stream")
let secondDidReceive = expectation(description: "second stream did receive")
let secondDidComplete = expectation(description: "second stream complete")
// When
session.streamRequest(.stream(1))
.responseStreamDecodable(of: TestResponse.self) { stream in
switch stream.event {
case let .stream(result):
firstStreamOnMain = Thread.isMainThread
switch result {
case let .success(value):
firstDecodedResponse = value
case let .failure(error):
firstDecodingError = error
}
firstStream.fulfill()
firstDidReceive.fulfill()
case let .complete(completion):
firstCompleteOnMain = Thread.isMainThread
firstResponse = completion.response
firstDidComplete.fulfill()
}
}
.responseStreamDecodable(of: TestResponse.self) { stream in
switch stream.event {
case let .stream(result):
secondStreamOnMain = Thread.isMainThread
switch result {
case let .success(value):
secondDecodedResponse = value
case let .failure(error):
secondDecodingError = error
}
secondStream.fulfill()
secondDidReceive.fulfill()
case let .complete(completion):
secondCompleteOnMain = Thread.isMainThread
secondResponse = completion.response
secondDidComplete.fulfill()
}
}
wait(for: [firstStream, secondStream], timeout: timeout, enforceOrder: true)
// Cannot test order of completion events, as one may have been enqueued while the other executed directly.
wait(for: [firstDidReceive, firstDidComplete], timeout: timeout, enforceOrder: true)
wait(for: [secondDidReceive, secondDidComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(firstStreamOnMain)
XCTAssertTrue(firstCompleteOnMain)
XCTAssertNotNil(firstDecodedResponse)
XCTAssertEqual(firstResponse?.statusCode, 200)
XCTAssertNil(firstDecodingError)
XCTAssertTrue(secondStreamOnMain)
XCTAssertTrue(secondCompleteOnMain)
XCTAssertNotNil(secondDecodedResponse)
XCTAssertEqual(secondResponse?.statusCode, 200)
XCTAssertNil(secondDecodingError)
}
func testThatDataStreamWorksCorrectlyWithMultipleConcurrentQueues() {
// Given
let requestQueue = DispatchQueue(label: "org.alamofire.testRequestQueue", attributes: .concurrent)
let serializationQueue = DispatchQueue(label: "org.alamofire.testSerializationQueue", attributes: .concurrent)
let session = Session(requestQueue: requestQueue, serializationQueue: serializationQueue)
var firstResponse: HTTPURLResponse?
var firstDecodedResponse: TestResponse?
var firstDecodingError: AFError?
var firstStreamOnMain = false
var firstCompleteOnMain = false
let firstDidReceive = expectation(description: "first stream did receive")
let firstDidComplete = expectation(description: "first stream complete")
var secondResponse: HTTPURLResponse?
var secondDecodedResponse: TestResponse?
var secondDecodingError: AFError?
var secondStreamOnMain = false
var secondCompleteOnMain = false
let secondDidReceive = expectation(description: "second stream did receive")
let secondDidComplete = expectation(description: "second stream complete")
// When
session.streamRequest(.stream(1))
.responseStreamDecodable(of: TestResponse.self) { stream in
switch stream.event {
case let .stream(result):
firstStreamOnMain = Thread.isMainThread
switch result {
case let .success(value):
firstDecodedResponse = value
case let .failure(error):
firstDecodingError = error
}
firstDidReceive.fulfill()
case let .complete(completion):
firstCompleteOnMain = Thread.isMainThread
firstResponse = completion.response
firstDidComplete.fulfill()
}
}
.responseStreamDecodable(of: TestResponse.self) { stream in
switch stream.event {
case let .stream(result):
secondStreamOnMain = Thread.isMainThread
switch result {
case let .success(value):
secondDecodedResponse = value
case let .failure(error):
secondDecodingError = error
}
secondDidReceive.fulfill()
case let .complete(completion):
secondCompleteOnMain = Thread.isMainThread
secondResponse = completion.response
secondDidComplete.fulfill()
}
}
wait(for: [firstDidReceive, firstDidComplete], timeout: timeout, enforceOrder: true)
wait(for: [secondDidReceive, secondDidComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(firstStreamOnMain)
XCTAssertTrue(firstCompleteOnMain)
XCTAssertNotNil(firstDecodedResponse)
XCTAssertEqual(firstResponse?.statusCode, 200)
XCTAssertNil(firstDecodingError)
XCTAssertTrue(secondStreamOnMain)
XCTAssertTrue(secondCompleteOnMain)
XCTAssertNotNil(secondDecodedResponse)
XCTAssertEqual(secondResponse?.statusCode, 200)
XCTAssertNil(secondDecodingError)
}
func testThatDataStreamCanAuthenticate() {
// Given
let user = "userstream", password = "password"
var response: HTTPURLResponse?
var streamOnMain = false
var completeOnMain = false
let didReceive = expectation(description: "stream did receive")
let didComplete = expectation(description: "stream complete")
// When
AF.streamRequest(.basicAuth(forUser: user, password: password))
.authenticate(username: user, password: password)
.responseStream { stream in
switch stream.event {
case .stream:
streamOnMain = Thread.isMainThread
didReceive.fulfill()
case let .complete(completion):
completeOnMain = Thread.isMainThread
response = completion.response
didComplete.fulfill()
}
}
wait(for: [didReceive, didComplete], timeout: timeout, enforceOrder: true)
// Then
XCTAssertTrue(streamOnMain)
XCTAssertTrue(completeOnMain)
XCTAssertEqual(response?.statusCode, 200)
}
}
final class DataStreamLifetimeEvents: BaseTestCase {
func testThatDataStreamRequestHasAppropriateLifetimeEvents() {
// Given
final class Monitor: EventMonitor {
var called: (() -> Void)?
func request<Value>(_ request: DataStreamRequest, didParseStream result: Result<Value, AFError>) {
called?()
}
}
let eventMonitor = ClosureEventMonitor()
let parseMonitor = Monitor()
let session = Session(eventMonitors: [eventMonitor, parseMonitor])
// Disable event test until Firewalk supports HTTPS.
// let didReceiveChallenge = expectation(description: "didReceiveChallenge should fire")
let taskDidFinishCollecting = expectation(description: "taskDidFinishCollecting should fire")
let didReceiveData = expectation(description: "didReceiveData should fire")
let willCacheResponse = expectation(description: "willCacheResponse should fire")