Testable Code

2017/07/07 17'22Testable Code - By cho
Page 1 of 36http://10.17.244.123'8080/md/TestableCode.md?print=1
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/W@LO D
/W@LO D
/W@LO D/W@LO D
class SomeDataModel {
func convertDate(date: NSDate) -> NSDate {
var returnDate = date
let closingDate = StringToDate(StoreModel.sharedInstance().closingDate)
if closingDate.hour >= 12 {
returnDate.day += 1
} else {
returnDate.day -= 1
}
return date
}
}
// Test
func testConvertDate() {
StoreModel.sharedInstance().closingDate = "0000"
XCTAssert(convertDate(date: someDate))
StoreModel.sharedInstance().closingDate = "1200"
XCTAssert(convertDate(date: someDate))
}

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/W@LO D
/W@LO D
/W@LO D/W@LO D
func convertDate(date: NSDate, closingTime: NSDate) -> NSDate {
var returnDate = date
let closingDate = StringToDate(closingTime)
if closingDate.hour >= 12 {
returnDate.day += 1
} else {
returnDate.day -= 1
}
return date
}
}
// Test
func testConvertDate() {
XCTAssert(convertDate(date: someDate, "0000"))
XCTAssert(convertDate(date: someDate, "1200"))
}

struct SomeState {
var current: Int
}
var state = SomeState(current: 0)
func step001() {
guard state.current == 0 else { fatalError() }
// do some thing
state.current = 1
}
func step002() {
// do some thing
state.current = 2
}
}
// Test
func testStep002() {
let model = SomeDataModel()
model.step001()

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struct SomeState {
let current: Int
}
var state = SomeState(current: 0)
func step001(state: SomeState) -> SomeState {
// do some thing
return SomeState(state: 1)
}
func step002(state: SomeState) -> SomeState {
// do some thing
return SomeState(state: 2)
}
}
// Test
func testStep002() {
let model = SomeDataModel()
let state = model.step002(state: SomeState(current: 1))

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/W@LO D/W@LO D/W@LO D
func foo(completion: (error: NSError?) -> Void) {
var sent = false
for _ in 0..<5 {
sent = checkDataSent()
if sent {
break
}
sleep(1)
}
if sent {
doSomethingReallyWantTo(completion)
} else {
completion(error: NSError(domain: "error domain", code: 1, userInfo: nil))
}
}

/W@LO D
/W@LO D
/W@LO D/W@LO D
func untilDataSent(completion: (sent: Bool) -> Void) {
var sent = false
for _ in 0..<5 {
sent = checkDataSent()
if sent {
break
}
sleep(1)
}
completion(sent: sent)
}
func foo(completion: (error: NSError?) -> Void) {
untilDataSent { sent in
if sent {
doSomethingReallyWantTo(completion)
} else {
}
}
}

/W@LO D
/W@LO D
/W@LO D/W@LO D
func untilDataSent(completion: (sent: Bool) -> Void) {
…
}
func foo(until: (completion: (sent: Bool) -> Void) -> Void, completion: (error: NSError?) ->
until { sent in
if sent {
doSomethingReallyWantTo(error: nil)
} else {
}
}
}
// Test
func testFoo() {
expectationWithDescription(@"expectation")
foo ({ $0(sent: true }) { error in XCTAssertNil(error) }
foo ({ $0(sent: false }) { error in XCTAssertNil(error) }
waitForExpectationsWithTimeout(1, handler: nil)
}

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class A { }
class B {
var a: A?
init() {
a = A()
}
}

@ D N IDBSR HM BNMRS TBSN@ D N IDBSR HM BNMRS TBSN@ D N IDBSR HM BNMRS TBSN
class A { }
class B {
var a: A?
init(a: A) {
self.a = a
}
}
// Test
func testB() {
let b = B(a: TestableA())
}

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class PrinterManager {
func printSomething(str: String) {
let printer = Printer(name: NSUserDefaults.standardUserDefaults().stringForKey("Current P
printer.printString(str)
}
}

class PrinterManager {
func printSomething(str: String) {
currentPrinter.printString(str)
}
func currentPrinter() -> Printer {
return Printer(name: NSUserDefaults.standardUserDefaults().stringForKey("Current Printer"
}
}
class TestablePrinterManager: PrinterManager {
override func currentPrinter() -> Printer {
return TestPrinter()
}
}

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class SomeModel {
var identifier: String!
func doSomething() {
let store = CommonStore.sharedInstance()
self.identifier = store.createSomething()
}
}

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class AppFactory {
func register(object: AnyObject, type: AnyType) { }
func get(type: AnyType) -> AnyObject { }
}
class SomeModel {
var identifier: String!
func doSomething() {
let store = AppFactory.sharedInstance().store()
self.identifier = store.createSomething()
}
}
func test() {
AppFactory.sharedInstance().register(MockStore(), type: CommonStore.self)
// test from here
}

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