How to use testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting method of ClassUnderTest class

...141                }142            }143        }144    }145    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting() {146        // This verifies the fix for a race condition in which `done()` is147        // called asynchronously on a background thread after the main thread checks148        // for completion, but prior to `RunLoop.current.run(mode:before:)` being called.149        // This race condition resulted in the RunLoop locking up.150        var failed = false151        let timeoutQueue = DispatchQueue(label: "Nimble.waitUntilTest.timeout", qos: .background)152        let timer = DispatchSource.makeTimerSource(flags: .strict, queue: timeoutQueue)153        timer.schedule(154            deadline: DispatchTime.now() + 5,155            repeating: .never,156            leeway: DispatchTimeInterval.milliseconds(1)157        )158        timer.setEventHandler {159            failed = true...

1let classUnderTest = ClassUnderTest()2classUnderTest.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()3let classUnderTest = ClassUnderTest()4classUnderTest.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()5let classUnderTest = ClassUnderTest()6classUnderTest.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()7let classUnderTest = ClassUnderTest()8classUnderTest.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()9let classUnderTest = ClassUnderTest()10classUnderTest.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()11let classUnderTest = ClassUnderTest()12classUnderTest.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()13let classUnderTest = ClassUnderTest()14classUnderTest.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()15let classUnderTest = ClassUnderTest()16classUnderTest.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()17let classUnderTest = ClassUnderTest()18classUnderTest.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()19let classUnderTest = ClassUnderTest()20classUnderTest.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()21let classUnderTest = ClassUnderTest()22classUnderTest.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()

1import XCTest2class ClassUnderTestTests: XCTestCase {3    override func setUp() {4        super.setUp()5        sut = ClassUnderTest()6    }7    override func tearDown() {8        super.tearDown()9    }10    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting() {11        let expectation = self.expectation(description: "waitUntilBlock")12        sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting(expectation)13        self.waitForExpectations(timeout: 1) { error in14            XCTAssertNil(error, "Error")15        }16    }17}18import XCTest19class ClassUnderTest {20    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting(_ expectation: XCTestExpectation) {21        waitUntil(timeout: 1) { done in22            DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {23                done()24            }25        }26        expectation.fulfill()27    }28}29import XCTest30class ClassUnderTestTests: XCTestCase {31    override func setUp() {32        super.setUp()33        sut = ClassUnderTest()34    }35    override func tearDown() {36        super.tearDown()37    }38    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()

1let sut = ClassUnderTest()2sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()3let sut = ClassUnderTest()4sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()5let sut = ClassUnderTest()6sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()7let sut = ClassUnderTest()8sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()9let sut = ClassUnderTest()10sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()11let sut = ClassUnderTest()12sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()13let sut = ClassUnderTest()14sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()15let sut = ClassUnderTest()16sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()17let sut = ClassUnderTest()18sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()19let sut = ClassUnderTest()20sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()21let sut = ClassUnderTest()22sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()

1import XCTest2import Foundation3class ClassUnderTestTests: XCTestCase {4    override func setUp() {5        super.setUp()6        sut = ClassUnderTest()7    }8    override func tearDown() {9        super.tearDown()10    }11    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting() {12        let expectation = self.expectation(description: "Wait for run loop to be waiting")13        sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting(expectation)14        waitForExpectations(timeout: 1, handler: nil)15    }16}17import XCTest18class ClassUnderTest: NSObject {19    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting(_ expectation: XCTestExpectation) {20        let timeout = Date(timeIntervalSinceNow: 0.5)21        let runLoopIsWaiting = expectation(description: "Run loop is waiting")22        let runLoopIsWaitingBlock: CFRunLoopObserverCallBack = { _, _, _ in23            runLoopIsWaiting.fulfill()24        }25        let runLoopIsWaitingObserver = CFRunLoopObserverCreateWithHandler(kCFAllocatorDefault,26        CFRunLoopAddObserver(runLoop.getCFRunLoop(), runLoopIsWaitingObserver, runLoopMode.rawValue)27        let runLoopIsWaitingTimeout = expectation(description: "Run loop is waiting timeout")28        DispatchQueue.main.asyncAfter(deadline: .now() + 1) {29            runLoopIsWaitingTimeout.fulfill()30        }31        let runLoopIsWaitingResult = XCTWaiter.wait(for: [runLoopIsWaiting, runLoopIsWaitingTimeout], timeout: 1)32        switch runLoopIsWaitingResult {33            print("Run loop is waiting")34            XCTFail("Run loop is not waiting")35            XCTFail("Unexpected result")36        }37        if runLoopIsWaitingFulfilled {38            let runLoopIsWaitingTimeoutResult = XCTWaiter.wait(for: [runLoopIsWaitingTimeout], timeout: 0

1let expectation = self.expectation(description: "testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting")2let sut = ClassUnderTest()3sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting(expectation)4let expectation = self.expectation(description: "testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting")5let sut = ClassUnderTest()6sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting(expectation)7let expectation = self.expectation(description: "testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting")8let sut = ClassUnderTest()9sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting(expectation)10let expectation = self.expectation(description: "testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting")11let sut = ClassUnderTest()12sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting(expectation)13let expectation = self.expectation(description: "testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting")14let sut = ClassUnderTest()15sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting(expectation)16let expectation = self.expectation(description: "testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting")17let sut = ClassUnderTest()18sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting(expectation)19let expectation = self.expectation(description: "testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting")20let sut = ClassUnderTest()21sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting(expectation)22let expectation = self.expectation(description: "testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting")23let sut = ClassUnderTest()

1import XCTest2import Foundation3class ClassUnderTestTest: XCTestCase {4    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting() {5        let expectation = self.expectation(description: "waitUntilComplete")6        let classUnderTest = ClassUnderTest()7        classUnderTest.waitUntilComplete { (isComplete) in8            expectation.fulfill()9        }10        self.waitForExpectations(timeout: 5.0, handler: nil)11    }12}13import Foundation14class ClassUnderTest {15    func waitUntilComplete(completion: @escaping (Bool) -> Void) {16        DispatchQueue.global().asyncAfter(deadline: .now() + 1.0) {17            completion(true)18        }19    }20}21class ClassUnderTestTest: XCTestCase {22    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting() {23        let expectation = self.expectation(description: "waitUntilComplete")24        let classUnderTest = ClassUnderTest()25        classUnderTest.waitUntilComplete { (isComplete) in26            Timer.scheduledTimer(withTimeInterval: 1.0, repeats: false) { (timer) in27                expectation.fulfill()28            }29        }30        self.waitForExpectations(timeout: 5.0, handler: nil)31    }32}

1import XCTest2import Foundation3class ClassUnderTestTests: XCTestCase {4    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting() {5        let expectation = self.expectation(description: "waiting for run loop to be waiting")6        let classUnderTest = ClassUnderTest()7        classUnderTest.waitUntilDoesNotCompleteBeforeRunLoopIsWaiting { (result) in8            expectation.fulfill()9        }10        waitForExpectations(timeout: 1, handler: nil)11    }12}13import XCTest14import Foundation15class ClassUnderTest {16    func waitUntilDoesNotCompleteBeforeRunLoopIsWaiting(completion: @escaping (Bool) -> Void) {17        let waitTime = DispatchTime.now() + timeout18        DispatchQueue.main.asyncAfter(deadline: waitTime) {19            completion(true)20        }21    }22}23import XCTest24import Foundation25class ClassUnderTest {26    func waitUntilDoesNotCompleteBeforeRunLoopIsWaiting(completion: @escaping (Bool) -> Void) {27        let waitTime = DispatchTime.now() + timeout28        DispatchQueue.main.asyncAfter(deadline: waitTime) {29            completion(true)30        }31    }32}

1class ClassUnderTest: XCTestCase { 2    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting() {3        let expectation = self.expectation(description: "Wait for run loop to start")4        DispatchQueue.global().async {5            RunLoop.current.run()6            expectation.fulfill()7        }8        waitForExpectations(timeout: 0.1, handler: nil)9    }10}11class ClassUnderTest: XCTestCase { 12    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting() {13        let expectation = self.expectation(description: "Wait for run loop to start")14        DispatchQueue.global().async {15            RunLoop.current.run()16            expectation.fulfill()17        }18        waitForExpectations(timeout: 0.1, handler: nil)19    }20}21class ClassUnderTest: XCTestCase { 22    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting() {23        let expectation = self.expectation(description: "Wait for run loop to start")24        DispatchQueue.global().async {25            RunLoop.current.run()26            expectation.fulfill()27        }28        waitForExpectations(timeout: 0.1, handler: nil)29    }30}31class ClassUnderTest: XCTestCase { 32    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting() {33        let expectation = self.expectation(description: "Wait for run loop to start")34        DispatchQueue.global().async {35            RunLoop.current.run()36            expectation.fulfill()37        }38        waitForExpectations(timeout: 0.1, handler: nil)39    }40}

1import XCTest2import Foundation3class ClassUnderTestTests: XCTestCase {4    override func setUp() {5        super.setUp()6        sut = ClassUnderTest()7    }8    override func tearDown() {9        super.tearDown()10    }11    func testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting() {12        let expectation = self.expectation(description: "testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting")13        let queue = DispatchQueue(label: "testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting")14        queue.async {15            self.sut.testWaitUntilDoesNotCompleteBeforeRunLoopIsWaiting()16            expectation.fulfill()17        }18        waitForExpectations(timeout: 10, handler: nil)19    }20}21import XCTest22import Foundation23class ClassUnderTestTests: XCTestCase {24    override func setUp() {25        super.setUp()26        sut = ClassUnderTest()27    }28    override func tearDown() {29        super.tearDown()30    }31    func testWaitUntilCompletesBeforeRunLoopIsWaiting() {32        let expectation = self.expectation(description: "testWaitUntilCompletesBeforeRunLoopIsWaiting")33        let queue = DispatchQueue(label: "testWaitUntilCompletesBeforeRunLoopIsWaiting")34        queue.async {35            self.sut.testWaitUntilCompletesBeforeRunLoopIsWaiting()36            expectation.fulfill()37        }38        waitForExpectations(timeout: 10, handler: nil)39    }40}41import XCTest42import Foundation43class ClassUnderTestTests: XCTestCase {44    override func setUp() {45        super.setUp()46        sut = ClassUnderTest()47    }48    override func tearDown() {49        super.tearDown()50    }51    func testWaitUntilCompletesBeforeRunLoopIsWaiting() {52        let expectation = self.expectation(description: "testWaitUntilCompletesBeforeRunLoopIsWaiting