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How to use testChain method of Error class

Best Nimble code snippet using Error.testChain

SwiftAsyncTests.swift

Source:SwiftAsyncTests.swift

...125            XCTAssertEqual(20, value)126        }127    }128    129    func testChain() {130        var expectation = self.expectation(description: "expectation")131        var value = 0132        133        Task<Int>(value: 10)134            .then { $0 + 5 }135            .then { $0 * 2 }136            .recover { _ in 40 }137            .then { value = $0 }138            .always { _ in expectation.fulfill() }139        140        self.waitForExpectations(timeout: 5) { error in141            XCTAssertNil(error)142            XCTAssertEqual(30, value)143        }144        145        146        expectation = self.expectation(description: "expectation")147        value = 0148        149        Task<Int>(value: 10)150            .then { $0 + 5 }151            .then { $0 * 2 }152            .then { _ in throw Error.er }153            .recover { _ in 40 }154            .then { value = $0 }155            .always { _ in expectation.fulfill() }156        157        self.waitForExpectations(timeout: 5) { error in158            XCTAssertNil(error)159            XCTAssertEqual(40, value)160        }161    }162    163    func testQueue() {164        var expectation = self.expectation(description: "expectation")165        var value = 0166        167        Task<Int>(value: 10)168            .then { $0 + 5 }169            .then(in: .global()) { return $0 * 2 }170            .then { value = $0 }171            .always { _ in expectation.fulfill() }172        173        self.waitForExpectations(timeout: 5) { error in174            XCTAssertNil(error)175            XCTAssertEqual(30, value)176        }177        178        expectation = self.expectation(description: "expectation")179        value = 0180        181        Task<Int>(value: 10)182            .then { $0 + 5 }183            .then { $0 * 2 }184            .then { _ in throw Error.er }185            .recover { _ in 40 }186            .then(in: .global()) { value = $0 }187            .always { _ in expectation.fulfill() }188        189        self.waitForExpectations(timeout: 5) { error in190            XCTAssertNil(error)191            XCTAssertEqual(40, value)192        }193    }194    195    // TODO: hangs196    func testDelay() {197        let expectation = self.expectation(description: "expectation")198        var value = 0199        200        //        let delay = { DispatchTime201        Task<Int>(value: 10)202            .then(delay: { .now() + 2 }) { $0 * 2 }203            .done { print("delay \($0)"); value = $0 }204            .always { _ in print("delay"); expectation.fulfill() }205        206        self.waitForExpectations(timeout: 5) { error in207            XCTAssertNil(error)208            XCTAssertEqual(20, value)209        }210    }211    212    func testUpdate() {213        let expectation = self.expectation(description: "expectation")214        var value = 0215        216        let task = Task<Int>(value: 10)217            .then(delay: { .now() + 3 }) { $0 * 2 }218        219        DispatchQueue.global().async {220            task.then { $0 * 2 }221                .then { $0 + 5 }222                .done { value = $0 }223                .always { _ in expectation.fulfill() }224        }225        226        self.waitForExpectations(timeout: 5) { error in227            XCTAssertNil(error)228            XCTAssertEqual(45, value)229        }230    }231    232    func testMultiple() {233        let expectation = self.expectation(description: "expectation")234        let e1 = self.expectation(description: "expectation1")235        let e2 = self.expectation(description: "expectation2")236        237        238        let task = Task<Int>(in: .global(), value: 10)239            .then(in: .global()) { _ in expectation.fulfill() }240        241        task.then(in: .global()) { e1.fulfill() }242        243        task.then(in: .global()) { e2.fulfill() }244        245        self.waitForExpectations(timeout: 5) { error in246            XCTAssertNil(error)247        }248    }249    250    func testWait() {251        var value = try? Task<Int>(value: 10)252            .then { $0 * 2 }253            .then { $0 + 5 }254            .wait()255        256        XCTAssertEqual(25, value)257        258        value = try? Task<Int>(value: 10)259            .then { $0 * 2 }260            .then(delay: { .now() + 10 }) { $0 + 5 }261            .wait()262        263        XCTAssertEqual(25, value)264    }265    266    func testWaitTimeout() {267        var value = 0268        do {269            value = try Task<Int>(value: 10)270                .then { $0 * 2 }271                .then(in: .global(), delay: { .now() + .seconds(5) }) { $0 + 5 }272                .wait(for: { .now() + 10 })273//                try Task<Int>(value: 10)274//                .then { $0 * 2 }275//                .then(delay: { .now() + .seconds(5) }) { $0 + 5 }276////                .wait()277//                .wait(for: { .now() + .seconds(10) })278        279            XCTAssertEqual(25, value)280        } catch {281            XCTFail("error: \(error)")282        }283        284//        value = 0285//286//        do {287//            value = try Task<Int>(value: 10)288//                .then { $0 * 2 }289//                .then(delay: { .now() + 5 }) { $0 + 5 }290//                .wait(for: { .now() + .seconds(1) })291//292//            XCTFail("should throw")293//        } catch {294//            switch error {295//                //            case let error as TaskError where error == .timeout:296//            //                XCTAssertTrue(true)297//            default:298//                XCTFail("wrong error \(error)")299//            }300//        }301//302//        XCTAssertEqual(0, value)303    }304    305    func testCombine() {306        var expectation = self.expectation(description: "e")307        var intTask = Task<Int>()308        var stringTask = Task<String>()309        var boolTask = Task<Bool>()310        var result = [Any]()311        312        [intTask.as(Any.self), stringTask.as(Any.self), boolTask.as(Any.self)]313            .combine()314            .done { result = $0 }315            .always { _ in expectation.fulfill() }316        317        intTask.send(10)318        stringTask.send("task string")319        boolTask.send(true)320        321        self.waitForExpectations(timeout: 5) { error in322            XCTAssertNil(error)323            XCTAssertEqual(3, result.count)324            guard result.count == 3 else {325                XCTFail()326                return327            }328            XCTAssertEqual(10, result[0] as? Int)329            XCTAssertEqual("task string", result[1] as? String)330            XCTAssertEqual(true, result[2] as? Bool)331        }332        333        expectation = self.expectation(description: "e")334        intTask = Task<Int>()335        stringTask = Task<String>()336        boolTask = Task<Bool>()337        result = [Any]()338        339        [intTask.as(Any.self), stringTask.as(Any.self), boolTask.as(Any.self)]340            .combine()341            .done { result = $0 }342            .always { _ in expectation.fulfill() }343        344        345        intTask.send(10)346        stringTask.throw(Error.er)347        boolTask.send(true)348        349        self.waitForExpectations(timeout: 5) { error in350            XCTAssertNil(error)351            XCTAssertEqual(0, result.count)352        }353    }354    355    func testMapReduce() {356        let task = Task<[Any]>(value: [10, 30, "ss", true, "aa"])357        358        let filterArray = try? task.filter { $0 is String }.wait()359        XCTAssertEqual(["ss", "aa"], (filterArray ?? []).flatMap { $0 as? String })360        361        let mapArray = try? task.map { String.init(describing: $0) }.wait()362        XCTAssertEqual(["10", "30", "ss", "true", "aa"], mapArray ?? [])363        364        let flatMapArray = try? task.flatMap { $0 as? String }.wait()365        XCTAssertEqual(["ss", "aa"], (flatMapArray ?? []))366        367        let reduce = try? task.reduce(0) { $0 + (($1 as? Int) ?? 1) }.wait()368        XCTAssertEqual(43, reduce)369    }370    371    func testUnwrap() {372        let e = self.expectation(description: "e")373        var value = 0374        375        Task<Void>().finish()376            .then { _ in return Task<Int>(value: 10) }377            .then { $0.then { $0 * 2 } }378            .unwrap()379            .then { $0 + 5 }380            .then { value = $0 }381            .always(in: .global()) { _ in e.fulfill() }382        383        self.waitForExpectations(timeout: 5) { error in384            XCTAssertNil(error)385            XCTAssertEqual(25, value)386        }387    }388    389    func testThenOnState() {390        391        var e = self.expectation(description: "e")392        var value = ""393        func foo(_ string: String) {394            value = string395        }396        397        var task = Task<Int>()398        399        task.then(on: .success) { _ in foo("success") }400            .always { _ in e.fulfill() }401        402        task.then(on: .failure) { _ in foo("fail") }403            .always { _ in e.fulfill() }404        405        task.send(10)406        407        self.waitForExpectations(timeout: 5) { error in408            XCTAssertNil(error)409            XCTAssertEqual("success", value)410        }411        412        e = self.expectation(description: "e")413        task = Task<Int>()414        415        task.then(on: .success) { _ in foo("success") }416            .always { _ in e.fulfill() }417        418        task.then(on: .failure) { $0 }419            .catch { _ in foo("fail") }420            .always { _ in e.fulfill() }421        422        task.throw(Error.er)423        424        self.waitForExpectations(timeout: 5) { error in425            XCTAssertNil(error)426            XCTAssertEqual("fail", value)427        }428    }429    430    static var allTests : [(String, (ConcurrencyTests) -> () throws -> Void)] {431        return [432            ("testSend", testSend),433            ("testThrow", testThrow),434            ("testRecover", testRecover),435            ("testInitializerBuild", testInitializerBuild),436            ("testInitializerValue", testInitializerValue),437            ("testInitializerState", testInitializerState),438            ("testChain", testChain),439            ("testQueue", testQueue),440            ("testDelay", testDelay),441            ("testUpdate", testUpdate),442            ("testMultiple", testMultiple),443            ("testWait", testWait),444            ("testWaitTimeout", testWaitTimeout),445            ("testCombine", testCombine),446            ("testUnwrap", testUnwrap),447        ]448    }449}

E14Tests.swift

Source:E14Tests.swift

...33        XCTAssertEqual(collatz.OddReverseCollatz(15),46)34    }35    36    37    func testChain() {38         collatz.chain(8)39        40        XCTAssertEqual(collatz.theList[8],4)41    }42    43    func testAllChain() {44        for i in 1...100000000 {45            collatz.chain(i)46        }47        print(collatz.maxCount)48        print(collatz.maxInt)49        /*50         52551         837799...

AsynchronousTaskTests.swift

Source:AsynchronousTaskTests.swift

...31        task1.execute()32        wait(for: [expect], timeout: 1.0)33    }34    35    func testChain() {36        let expect = XCTestExpectation(description: "Completed basic")37        [task1, task2].chain()38        task2.completionBlock = { result in39            XCTAssert(result.isSuccess)40            expect.fulfill()41        }42        task1.execute()43        wait(for: [expect], timeout: 1.0)44    }45    46    func testExecuteInOrder() {47        let expect = XCTestExpectation(description: "Completed Execute in Order")48        let task3 = AsynchronousTask { finish in49            finish(.success(()))50        }51        let task4 = AsynchronousTask { finish in52            finish(.success(()))53        }54        [task1, task2, task3, task4].executeInOrder { result in55            XCTAssert(result.isSuccess)56            expect.fulfill()57        }58        task1.execute()59        wait(for: [expect], timeout: 1.0)60    }61    62    func testWithAsyncDelay() {63        let expect = XCTestExpectation(description: "Completed with Async Delay")64        let task3 = AsynchronousTask { finish in65            DispatchQueue.main.async {66                finish(.success(()))67            }68        }69        [task1, task2, task3].executeInOrder { result in70            XCTAssert(result.isSuccess)71            expect.fulfill()72        }73        task1.execute()74        wait(for: [expect], timeout: 1.0)75    }76    77    enum Error: Swift.Error {78        case testError79    }80    81    func testWithFailure() {82        let expect = XCTestExpectation(description: "Test with failure")83        let task3 = AsynchronousTask { finish in84            finish(.failure(Error.testError))85        }86        var task4Executed = false87        let task4 = AsynchronousTask { finish in88            task4Executed = true89            finish(.success(()))90        }91        [task1, task2, task3, task4].executeInOrder { result in92            XCTAssertFalse(task4Executed)93            XCTAssertFalse(result.isSuccess)94            expect.fulfill()95        }96        task1.execute()97        wait(for: [expect], timeout: 1.0)98    }99    static var allTests = [100        ("testNextTask", testNextTask),101        ("testChain", testChain),102        ("testExecuteInOrder", testExecuteInOrder),103        ("testWithFailure", testWithFailure),104    ]105}...

testChain

Using AI Code Generation

1testChain()2testChain2()3testChain3()4testChain4()5testChain5()6testChain6()7testChain7()8testChain8()9testChain9()10testChain10()11testChain11()12testChain12()13testChain13()14testChain14()15testChain15()16testChain16()17testChain17()18testChain18()19testChain19()20testChain20()21testChain21()22testChain22()23testChain23()24testChain24()25testChain25()26testChain26()27testChain27()28testChain28()29testChain29()30testChain30()31testChain31()

testChain

Using AI Code Generation

1let error = Error()2error.testChain()3let error = Error()4error.testChain()5let error = Error()6error.testChain()7let error = Error()8error.testChain()9let error = Error()10error.testChain()11let error = Error()12error.testChain()13let error = Error()14error.testChain()15let error = Error()16error.testChain()17let error = Error()18error.testChain()19let error = Error()20error.testChain()21let error = Error()22error.testChain()23let error = Error()24error.testChain()25let error = Error()26error.testChain()27let error = Error()28error.testChain()29let error = Error()30error.testChain()31let error = Error()32error.testChain()33let error = Error()34error.testChain()35let error = Error()36error.testChain()37let error = Error()38error.testChain()

testChain

Using AI Code Generation

1var err = Error()2err.testChain()3var err = Error()4err.testChain()5var err = Error()6err.testChain()7var err = Error()8err.testChain()9var err = Error()10err.testChain()11var err = Error()12err.testChain()13var err = Error()14err.testChain()15var err = Error()16err.testChain()17var err = Error()18err.testChain()19var err = Error()20err.testChain()21var err = Error()22err.testChain()23var err = Error()24err.testChain()25var err = Error()26err.testChain()27var err = Error()28err.testChain()29var err = Error()30err.testChain()31var err = Error()32err.testChain()33var err = Error()34err.testChain()35var err = Error()36err.testChain()37var err = Error()38err.testChain()

testChain

Using AI Code Generation

1func testChain() {2    let error = Error()3    error.testChain()4}5func testChain() {6    let error = Error()7    error.testChain()8}9func testChain() {10    let error = Error()11    error.testChain()12}13func testChain() {14    let error = Error()15    error.testChain()16}17func testChain() {18    let error = Error()19    error.testChain()20}21func testChain() {22    let error = Error()23    error.testChain()24}25func testChain() {26    let error = Error()27    error.testChain()28}29func testChain() {30    let error = Error()31    error.testChain()32}33func testChain() {34    let error = Error()35    error.testChain()36}37func testChain() {38    let error = Error()39    error.testChain()40}41func testChain() {42    let error = Error()43    error.testChain()44}45func testChain() {46    let error = Error()47    error.testChain()48}49func testChain() {50    let error = Error()51    error.testChain()52}53func testChain() {54    let error = Error()55    error.testChain()56}57func testChain() {

testChain

Using AI Code Generation

1var testError = Error()2var testError = Error()3var testError = Error()4var testError = Error()5var testError = Error()6var testError = Error()7var testError = Error()8var testError = Error()9var testError = Error()10var testError = Error()11var testError = Error()12var testError = Error()13var testError = Error()14var testError = Error()15var testError = Error()16var testError = Error()17var testError = Error()

testChain

Using AI Code Generation

1func testChain() {2    do {3        try Error.testChain()4    } catch {5        print("Error: \(error)")6    }7}8func testChain() {9    do {10        try Error.testChain()11    } catch {12        print("Error: \(error)")13    }14}15func testChain() {16    do {17        try Error.testChain()18    } catch {19        print("Error: \(error)")20    }21}22func testChain() {23    do {24        try Error.testChain()25    } catch {26        print("Error: \(error)")27    }28}29func testChain() {30    do {31        try Error.testChain()32    } catch {33        print("Error: \(error)")34    }35}36func testChain() {37    do {38        try Error.testChain()39    } catch {40        print("Error: \(error)")41    }42}43func testChain() {44    do {45        try Error.testChain()46    } catch {47        print("Error: \(error)")48    }49}50func testChain() {51    do {52        try Error.testChain()53    } catch {54        print("Error: \(error)")55    }56}57func testChain() {58    do {59        try Error.testChain()60    } catch {61        print("Error: \(error)")62    }63}64func testChain() {65    do {66        try Error.testChain()67    } catch {68        print("Error: \(error)")69    }70}71func testChain() {72    do {73        try Error.testChain()74    } catch {75        print("Error: \(error)")76    }

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