Android中的Monkey测试极大的帮助Android开发者保证了开发质量，iOS自身是没有Monkey测试的，最开始有基于UIAutomation 的 monkey 测试[https://github.com/jonathanpenn/ui-auto-monkey]. xCode7之后，UIAutomation被弃用，对应Monkey也随之淡化.当大家习惯Monkey测试，突然消失之后就会怀念，正所谓有需求就会有市场，老外用Swift基于XCUITesting框架开发新的Monkey工具SwiftMonkey.

Swift Monkey测试

SwiftMonkey基于Swift语言编写，按照SwiftMonkey提供的Demo，运行之后看到效果如下图所示:

SwiftMonkey.gif

SwiftMonkey实现测试需要SwiftMonkey和SwiftMonkeyPaws两个框架，如果我们的项目开始就是Swift语言编写的，那么使用起来就非常简单,主要过程如下:
①将Demo中SwiftMonkey和SwiftMonkeyPaws两个项目拖入自身的Swift项目中.

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②SwiftMonkey作为FrameWork加入UITest对应的Target文件中:

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③SwiftMonkeyPaws作为FrameWork加入App项目对应的Target中;

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④AppDelegate中加入Paws:

class AppDelegate: UIResponder, UIApplicationDelegate {    var window: UIWindow?    var paws: MonkeyPaws?    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {        // Override point for customization after application launch.        paws = MonkeyPaws(view: window!)        return true    }

⑤UITest中加入Monkey测试代码:

override func setUp() {        super.setUp()                // Put setup code here. This method is called before the invocation of each test method in the class.                // In UI tests it is usually best to stop immediately when a failure occurs.        continueAfterFailure = false        // UI tests must launch the application that they test. Doing this in setup will make sure it happens for each test method.        XCUIApplication().launch()        // In UI tests it’s important to set the initial state - such as interface orientation - required for your tests before they run. The setUp method is a good place to do this.    }        override func tearDown() {        // Put teardown code here. This method is called after the invocation of each test method in the class.        super.tearDown()    }        func testMonkey() {        let application = XCUIApplication()                // Workaround for bug in Xcode 7.3. Snapshots are not properly updated        // when you initially call app.frame, resulting in a zero-sized rect.        // Doing a random query seems to update everything properly.        // TODO: Remove this when the Xcode bug is fixed!        _ = application.descendants(matching: .any).element(boundBy: 0).frame                // Initialise the monkey tester with the current device        // frame. Giving an explicit seed will make it generate        // the same sequence of events on each run, and leaving it        // out will generate a new sequence on each run.        //let monkey = Monkey(frame: application.frame)        let monkey = Monkey(seed: 123, frame: application.frame)                // Add actions for the monkey to perform. We just use a        // default set of actions for this, which is usually enough.        // Use either one of these but maybe not both.        // XCTest private actions seem to work better at the moment.        // UIAutomation actions seem to work only on the simulator.        monkey.addDefaultXCTestPrivateActions()                //monkey.addDefaultUIAutomationActions()                // Occasionally, use the regular XCTest functionality        // to check if an alert is shown, and click a random        // button on it.        monkey.addXCTestTapAlertAction(interval: 100, application: application)                // Run the monkey test indefinitely.        monkey.monkeyAround()    }

这段代码是SwiftMonkey的默认代码，addDefaultXCTestPrivateActions是调用Apple私有手势方法，addDefaultUIAutomationActions只在模拟器中有效，内部实现如下:

 public func addDefaultXCTestPrivateActions() {        addXCTestTapAction(weight: 25)        addXCTestLongPressAction(weight: 1)        addXCTestDragAction(weight: 1)        addXCTestPinchCloseAction(weight: 1)        addXCTestPinchOpenAction(weight: 1)        addXCTestRotateAction(weight: 1)        //addXCTestOrientationAction(weight: 1) // TODO: Investigate why this does not work.    }

默认执行点击，长按，拖拽，捏合，旋转，横竖屏切换操作，Weight代表的是时间间隔，如果觉得系统默认的操作过多，可以自行删减.

monkeyAround代表次数，默认如果不设置次数，会一直执行下去.

public func monkeyAround() {        while true {            actRandomly()            actRegularly()        }    }

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OC Monkey 测试

如果你的项目一开始就是Swift编写，或者已经全面迁移到Swift语言，恭喜你下面这段介绍可以忽略了.鉴于目前大部分App都是OC为主，如果直接按照Swift的套路去使用SwiftMonkey会遇到一些问题，有兴趣可以自行实践，以下是本人实战过程.

① 将Demo中SwiftMonkey和SwiftMonkeyPaws两个项目拖入自身的Swift项目中.

② 将Always Embed Swift Standard Libraries设置为YES.

Paste_Image.png

③ 正常的套路直接调用Moneky,MonkeyPaws类，但是事实上无法调用，折腾了很久，中间各种报错.

④ 简单粗暴的方式是将SwiftMonkey两个项目中的Swift拷贝到OC项目中:

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⑤ AppDelegate中代码实现:

@interface AppDelegate ()@property (strong, nonatomic) MonkeyPaws *paws;@end@implementation AppDelegate- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    // Override point for customization after application launch.    self.paws = [[MonkeyPaws alloc] initWithView:self.window tapUIApplication:true];    return YES;}

⑤ UITest测试代码:

- (void)setUp {    [super setUp];        // Put setup code here. This method is called before the invocation of each test method in the class.        // In UI tests it is usually best to stop immediately when a failure occurs.    self.continueAfterFailure = NO;    // UI tests must launch the application that they test. Doing this in setup will make sure it happens for each test method.    [[[XCUIApplication alloc] init] launch];        // In UI tests it’s important to set the initial state - such as interface orientation - required for your tests before they run. The setUp method is a good place to do this.}- (void)tearDown {    // Put teardown code here. This method is called after the invocation of each test method in the class.    [super tearDown];}- (void)testExample {    // Use recording to get started writing UI tests.    [XCUIDevice sharedDevice].orientation = UIDeviceOrientationPortrait;    // Use XCTAssert and related functions to verify your tests produce the correct results.}- (void)testMonkey {        XCUIApplication *application = [XCUIApplication new];    CGRect frame = [[application descendantsMatchingType:XCUIElementTypeAny] elementBoundByIndex:0].frame;        Monkey *monkey = [[Monkey alloc] initWithSeed:123 frame:application.frame];        [monkey addDefaultXCTestPrivateActions];    [monkey addXCTestTapAlertActionWithInterval:100 application:application];    [monkey monkeyAround];}

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如果项目中之前没有进行过Monkey测试，SwiftMonkey会帮我们测出一些以前开发中没有注意的问题.SwiftMonkey涉及调用XCTesting的私有API，不建议包含SwiftMonkey直接上传到AppStore.

参考资料
SwiftMonkey
SwiftMonkey ：iOS 上的 monkey

iOS-SwiftMonkey测试

Swift Monkey测试

OC Monkey 测试

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