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CombineTests.swift
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//
// CombineTests.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.
//
#if !((os(iOS) && (arch(i386) || arch(arm))) || os(Windows) || os(Linux))
import Alamofire
import Combine
import XCTest
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
final class DataRequestCombineTests: CombineTestCase {
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataRequestCanBePublished() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var response: DataResponse<TestResponse, AFError>?
// When
store {
AF.request(.default)
.publishDecodable(type: TestResponse.self)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { response = $0; responseReceived.fulfill() })
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(response?.result.isSuccess == true)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatNonAutomaticDataRequestCanBePublished() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
let session = Session(startRequestsImmediately: false)
var response: DataResponse<TestResponse, AFError>?
// When
store {
session.request(.default)
.publishDecodable(type: TestResponse.self)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { response = $0; responseReceived.fulfill() })
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(response?.result.isSuccess == true)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataRequestCanPublishData() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
let session = Session(startRequestsImmediately: false)
var response: DataResponse<Data, AFError>?
// When
store {
session.request(.default)
.publishData()
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { response = $0; responseReceived.fulfill() })
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(response?.result.isSuccess == true)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataRequestCanPublishString() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
let session = Session(startRequestsImmediately: false)
var response: DataResponse<String, AFError>?
// When
store {
session.request(.default)
.publishString()
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { response = $0; responseReceived.fulfill() })
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(response?.result.isSuccess == true)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataRequestCanBePublishedUnserialized() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var response: DataResponse<Data?, AFError>?
// When
store {
AF.request(.default)
.publishUnserialized()
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { response = $0; responseReceived.fulfill() })
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(response?.result.isSuccess == true)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataRequestCanBePublishedWithMultipleHandlers() {
// Given
let handlerResponseReceived = expectation(description: "handler response should be received")
let publishedResponseReceived = expectation(description: "published response should be received")
let completionReceived = expectation(description: "stream should complete")
var handlerResponse: DataResponse<TestResponse, AFError>?
var publishedResponse: DataResponse<TestResponse, AFError>?
// When
store {
AF.request(.default)
.responseDecodable(of: TestResponse.self) { handlerResponse = $0; handlerResponseReceived.fulfill() }
.publishDecodable(type: TestResponse.self)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { publishedResponse = $0; publishedResponseReceived.fulfill() })
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(handlerResponse?.result.isSuccess == true)
XCTAssertTrue(publishedResponse?.result.isSuccess == true)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataRequestCanPublishResult() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var result: Result<TestResponse, AFError>?
// When
store {
AF.request(.default)
.publishDecodable(type: TestResponse.self)
.result()
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { result = $0; responseReceived.fulfill() })
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(result?.isSuccess == true)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataRequestCanPublishValue() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var value: TestResponse?
// When
store {
AF.request(.default)
.publishDecodable(type: TestResponse.self)
.value()
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { value = $0; responseReceived.fulfill() })
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(value)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataRequestCanPublishValueWithFailure() {
// Given
let completionReceived = expectation(description: "stream should complete")
var error: AFError?
// When
store {
AF.request(Endpoint(path: .delay(interval: 1), timeout: 0.01))
.publishDecodable(type: TestResponse.self)
.value()
.sink(receiveCompletion: { completion in
switch completion {
case let .failure(err):
error = err
case .finished:
error = nil
}
completionReceived.fulfill()
}, receiveValue: { _ in })
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(error)
XCTAssertEqual((error?.underlyingError as? URLError)?.code, .timedOut)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatPublishedDataRequestIsNotResumedUnlessSubscribed() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var response: DataResponse<TestResponse, AFError>?
// When
let request = AF.request(.default)
let publisher = request.publishDecodable(type: TestResponse.self)
let stateAfterPublisher = request.state
store {
publisher.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { response = $0; responseReceived.fulfill() })
}
let stateAfterSubscription = request.state
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(response?.result.isSuccess == true)
XCTAssertEqual(stateAfterPublisher, .initialized)
XCTAssertEqual(stateAfterSubscription, .resumed)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataRequestCanSubscribedFromNonMainQueueButPublishedOnMainQueue() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
let queue = DispatchQueue(label: "org.alamofire.tests.combineEventQueue")
var receivedOnMain = false
var response: DataResponse<TestResponse, AFError>?
// When
store {
AF.request(.default)
.publishDecodable(type: TestResponse.self)
.subscribe(on: queue)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: {
receivedOnMain = Thread.isMainThread
response = $0
responseReceived.fulfill()
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(response?.result.isSuccess == true)
XCTAssertTrue(receivedOnMain)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataRequestPublishedOnSeparateQueueIsReceivedOnThatQueue() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
let queue = DispatchQueue(label: "org.alamofire.tests.combineEventQueue")
var response: DataResponse<TestResponse, AFError>?
// When
store {
AF.request(.default)
.publishDecodable(type: TestResponse.self, queue: queue)
.sink(receiveCompletion: { _ in
dispatchPrecondition(condition: .onQueue(queue))
completionReceived.fulfill()
},
receiveValue: {
dispatchPrecondition(condition: .onQueue(queue))
response = $0
responseReceived.fulfill()
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(response?.result.isSuccess == true)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataRequestPublishedOnSeparateQueueCanBeReceivedOntoMainQueue() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
let queue = DispatchQueue(label: "org.alamofire.tests.combineEventQueue")
var receivedOnMain = false
var response: DataResponse<TestResponse, AFError>?
// When
store {
AF.request(.default)
.publishDecodable(type: TestResponse.self, queue: queue)
.receive(on: DispatchQueue.main)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: {
receivedOnMain = Thread.isMainThread
response = $0
responseReceived.fulfill()
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(response?.result.isSuccess == true)
XCTAssertTrue(receivedOnMain)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatPublishedDataRequestCanBeCancelledAutomatically() throws {
if #available(macOS 11, iOS 14, watchOS 7, tvOS 14, *) {
throw XCTSkip("Skip on 2020 OS versions, as Combine cancellation no longer emits a value.")
}
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var response: DataResponse<TestResponse, AFError>?
// When
let request = AF.request(.default)
var token: AnyCancellable? = request
.publishDecodable(type: TestResponse.self)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { response = $0; responseReceived.fulfill() })
token = nil
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(response?.result.isFailure == true)
XCTAssertTrue(response?.error?.isExplicitlyCancelledError == true,
"error is not explicitly cancelled but \(response?.error?.localizedDescription ?? "None")")
XCTAssertTrue(request.isCancelled)
XCTAssertNil(token)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatPublishedDataRequestCanBeCancelledManually() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var response: DataResponse<TestResponse, AFError>?
// When
let request = AF.request(.default)
store {
request
.publishDecodable(type: TestResponse.self)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { response = $0; responseReceived.fulfill() })
}
request.cancel()
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(response?.result.isFailure == true)
XCTAssertTrue(response?.error?.isExplicitlyCancelledError == true,
"error is not explicitly cancelled but \(response?.error?.localizedDescription ?? "None")")
XCTAssertTrue(request.isCancelled)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatMultipleDataRequestPublishersCanBeCombined() {
// Given
let responseReceived = expectation(description: "combined response should be received")
let completionReceived = expectation(description: "combined stream should complete")
var firstResponse: DataResponse<TestResponse, AFError>?
var secondResponse: DataResponse<TestResponse, AFError>?
// When
let first = AF.request(.default)
.publishDecodable(type: TestResponse.self)
let second = AF.request(.default)
.publishDecodable(type: TestResponse.self)
store {
Publishers.CombineLatest(first, second)
.sink(receiveCompletion: { _ in completionReceived.fulfill() }) { first, second in
firstResponse = first
secondResponse = second
responseReceived.fulfill()
}
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(firstResponse?.result.isSuccess == true)
XCTAssertTrue(secondResponse?.result.isSuccess == true)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatMultipleDataRequestPublishersCanBeChained() {
// Given
let responseReceived = expectation(description: "combined response should be received")
let completionReceived = expectation(description: "combined stream should complete")
let customValue = "CustomValue"
var firstResponse: DataResponse<TestResponse, AFError>?
var secondResponse: DataResponse<TestResponse, AFError>?
// When
store {
AF.request(.default)
.publishDecodable(type: TestResponse.self)
.flatMap { response -> DataResponsePublisher<TestResponse> in
firstResponse = response
let request = Endpoint(headers: ["X-Custom": customValue])
return AF.request(request)
.publishDecodable(type: TestResponse.self)
}
.sink(receiveCompletion: { _ in completionReceived.fulfill() }) { response in
secondResponse = response
responseReceived.fulfill()
}
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(firstResponse?.result.isSuccess == true)
XCTAssertTrue(secondResponse?.result.isSuccess == true)
XCTAssertEqual(secondResponse?.value?.headers["X-Custom"], customValue)
}
}
// MARK: - DataStreamRequest
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
final class DataStreamRequestCombineTests: CombineTestCase {
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataStreamRequestCanBePublished() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var result: Result<TestResponse, AFError>?
// When
store {
AF.streamRequest(.default)
.publishDecodable(type: TestResponse.self)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { stream in
switch stream.event {
case let .stream(value):
result = value
case .complete:
responseReceived.fulfill()
}
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(result?.success)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatNonAutomaticDataStreamRequestCanBePublished() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
let session = Session(startRequestsImmediately: false)
var result: Result<TestResponse, AFError>?
// When
store {
session.streamRequest(.default)
.publishDecodable(type: TestResponse.self)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { stream in
switch stream.event {
case let .stream(value):
result = value
case .complete:
responseReceived.fulfill()
}
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(result?.success)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataStreamRequestCanPublishData() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var result: Result<Data, AFError>?
// When
store {
AF.streamRequest(.default)
.publishData()
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { stream in
switch stream.event {
case let .stream(value):
result = value
case .complete:
responseReceived.fulfill()
}
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(result?.success)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataStreamRequestCanPublishString() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var result: Result<String, AFError>?
// When
store {
AF.streamRequest(.default)
.publishString()
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { stream in
switch stream.event {
case let .stream(value):
result = value
case .complete:
responseReceived.fulfill()
}
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(result?.success)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataStreamRequestCanBePublishedWithMultipleHandlers() {
// Given
let handlerResponseReceived = expectation(description: "handler response should be received")
let publishedResponseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var handlerResult: Result<TestResponse, AFError>?
var publishedResult: Result<TestResponse, AFError>?
// When
store {
AF.streamRequest(.default)
.responseStreamDecodable(of: TestResponse.self) { stream in
switch stream.event {
case let .stream(value):
handlerResult = value
case .complete:
handlerResponseReceived.fulfill()
}
}
.publishDecodable(type: TestResponse.self)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { stream in
switch stream.event {
case let .stream(value):
publishedResult = value
case .complete:
publishedResponseReceived.fulfill()
}
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(handlerResult?.success)
XCTAssertNotNil(publishedResult?.success)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataStreamRequestCanPublishResult() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var result: Result<TestResponse, AFError>?
// When
store {
AF.streamRequest(.default)
.publishDecodable(type: TestResponse.self)
.result()
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { received in
result = received
responseReceived.fulfill()
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(result?.success)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataStreamRequestCanPublishResultWithResponseFailure() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var result: Result<TestResponse, AFError>?
// When
store {
AF.streamRequest(Endpoint.delay(1).modifying(\.timeout, to: 0.1))
.publishDecodable(type: TestResponse.self)
.result()
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { received in
result = received
responseReceived.fulfill()
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNil(result?.success)
XCTAssertEqual((result?.failure?.underlyingError as? URLError)?.code, .timedOut)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataStreamRequestCanPublishValue() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var response: TestResponse?
// When
store {
AF.streamRequest(.default)
.publishDecodable(type: TestResponse.self)
.value()
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { received in
response = received
responseReceived.fulfill()
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(response)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataStreamRequestCanPublishValueWithFailure() {
// Given
let completionReceived = expectation(description: "stream should complete")
var error: AFError?
// When
store {
AF.streamRequest(Endpoint.delay(1).modifying(\.timeout, to: 0.1))
.publishDecodable(type: TestResponse.self)
.value()
.sink(receiveCompletion: { completion in
switch completion {
case let .failure(err):
error = err
case .finished:
error = nil
}
completionReceived.fulfill()
}, receiveValue: { _ in })
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(error)
XCTAssertEqual((error?.underlyingError as? URLError)?.code, .timedOut)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatPublishedDataStreamRequestIsNotResumedUnlessSubscribed() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var result: Result<TestResponse, AFError>?
// When
let request = AF.streamRequest(.default)
let publisher = request.publishDecodable(type: TestResponse.self)
let stateAfterPublisher = request.state
store {
publisher.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { stream in
switch stream.event {
case let .stream(value):
result = value
case .complete:
responseReceived.fulfill()
}
})
}
let stateAfterSubscription = request.state
waitForExpectations(timeout: timeout)
// Then
XCTAssertTrue(result?.isSuccess == true)
XCTAssertEqual(stateAfterPublisher, .initialized)
XCTAssertEqual(stateAfterSubscription, .resumed)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataStreamRequestCanSubscribedFromNonMainQueueButPublishedOnMainQueue() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
let queue = DispatchQueue(label: "org.alamofire.tests.combineEventQueue")
var receivedOnMain = false
var result: Result<TestResponse, AFError>?
// When
store {
AF.streamRequest(.default)
.publishDecodable(type: TestResponse.self)
.subscribe(on: queue)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { stream in
receivedOnMain = Thread.isMainThread
switch stream.event {
case let .stream(value):
result = value
case .complete:
responseReceived.fulfill()
}
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(result?.success)
XCTAssertTrue(receivedOnMain)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataStreamRequestPublishedOnSeparateQueueIsReceivedOnThatQueue() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
let queue = DispatchQueue(label: "org.alamofire.tests.combineEventQueue")
var result: Result<TestResponse, AFError>?
// When
store {
AF.streamRequest(.default)
.publishDecodable(type: TestResponse.self, queue: queue)
.sink(receiveCompletion: { _ in
dispatchPrecondition(condition: .onQueue(queue))
completionReceived.fulfill()
},
receiveValue: { stream in
dispatchPrecondition(condition: .onQueue(queue))
switch stream.event {
case let .stream(value):
result = value
case .complete:
responseReceived.fulfill()
}
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(result?.success)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDataStreamRequestPublishedOnSeparateQueueCanBeReceivedOntoMainQueue() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
let queue = DispatchQueue(label: "org.alamofire.tests.combineEventQueue")
var receivedOnMain = false
var result: Result<TestResponse, AFError>?
// When
store {
AF.streamRequest(.default)
.publishDecodable(type: TestResponse.self, queue: queue)
.receive(on: DispatchQueue.main)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { stream in
receivedOnMain = Thread.isMainThread
switch stream.event {
case let .stream(value):
result = value
case .complete:
responseReceived.fulfill()
}
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(result?.success)
XCTAssertTrue(receivedOnMain)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatPublishedDataStreamRequestCanBeCancelledAutomatically() throws {
if #available(macOS 11, iOS 14, watchOS 7, tvOS 14, *) {
throw XCTSkip("Skip on 2020 OS versions, as Combine cancellation no longer emits a value.")
}
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var error: AFError?
// When
let request = AF.streamRequest(.default)
var token: AnyCancellable? = request
.publishDecodable(type: TestResponse.self)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { error = $0.completion?.error; responseReceived.fulfill() })
token = nil
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(error)
XCTAssertTrue(error?.isExplicitlyCancelledError == true,
"error is not explicitly cancelled but \(error?.localizedDescription ?? "None")")
XCTAssertTrue(request.isCancelled)
XCTAssertNil(token)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatPublishedDataStreamRequestCanBeCancelledManually() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "stream should complete")
var error: AFError?
// When
let request = AF.streamRequest(.default)
store {
request
.publishDecodable(type: TestResponse.self)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { error = $0.completion?.error; responseReceived.fulfill() })
}
request.cancel()
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(error)
XCTAssertTrue(error?.isExplicitlyCancelledError == true,
"error is not explicitly cancelled but \(error?.localizedDescription ?? "None")")
XCTAssertTrue(request.isCancelled)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatMultipleDataStreamPublishersCanBeCombined() {
// Given
let responseReceived = expectation(description: "combined response should be received")
let completionReceived = expectation(description: "combined stream should complete")
var firstCompletion: DataStreamRequest.Completion?
var secondCompletion: DataStreamRequest.Completion?
// When
let first = AF.streamRequest(.default)
.publishDecodable(type: TestResponse.self)
let second = AF.streamRequest(.default)
.publishDecodable(type: TestResponse.self)
store {
Publishers.CombineLatest(first.compactMap(\.completion), second.compactMap(\.completion))
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { first, second in
firstCompletion = first
secondCompletion = second
responseReceived.fulfill()
})
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(firstCompletion)
XCTAssertNotNil(secondCompletion)
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatMultipleDataStreamRequestPublishersCanBeChained() {
// Given
let responseReceived = expectation(description: "combined response should be received")
let completionReceived = expectation(description: "combined stream should complete")
var firstCompletion: DataStreamRequest.Completion?
var secondCompletion: DataStreamRequest.Completion?
// When
store {
AF.streamRequest(.default)
.publishDecodable(type: TestResponse.self)
.compactMap(\.completion)
.flatMap { completion -> DataStreamPublisher<TestResponse> in
firstCompletion = completion
return AF.streamRequest(.default)
.publishDecodable(type: TestResponse.self)
}
.compactMap(\.completion)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { secondCompletion = $0; responseReceived.fulfill() })
}
waitForExpectations(timeout: timeout)
// Then
XCTAssertNotNil(firstCompletion)
XCTAssertNotNil(secondCompletion)
}
}
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
final class DownloadRequestCombineTests: CombineTestCase {
@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
func testThatDownloadRequestCanBePublished() {
// Given
let responseReceived = expectation(description: "response should be received")
let completionReceived = expectation(description: "publisher should complete")
var response: DownloadResponse<TestResponse, AFError>?
// When
store {
AF.download(.default)
.publishDecodable(type: TestResponse.self)
.sink(receiveCompletion: { _ in completionReceived.fulfill() },
receiveValue: { response = $0; responseReceived.fulfill() })
}