Testing in iOS - Speaker Deck

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Victor Ilyukevich @yas375 Contracted iOS developer at Care Zone Inc.

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Why do I need to spend time writing tests? it reduces bugs it helps to produce good code it proves your code is working as supposed to tests are documentation to your code it makes easy to maintain your code ...

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UIAutomation

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UIAutomation

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UIAutomation var target = UIATarget.localTarget(); var appWindow = target.frontMostApp().mainWindow(); appWindow.tabBar().buttons()["Unit Conversion"].tap();

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Tuneup JS http://www.tuneupjs.org

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Tuneup JS http://www.tuneupjs.org test("Login screen", function(target, app) { var window = app.mainWindow(); // tap the left button in the navigation bar window.navigationBars()[0].leftButton().tap(); // assert that the app has navigated into a sub-view controller assertEquals("Settings", window.navigationBars()[0].value()); });

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mechanic.js https://github.com/jaykz52/mechanic // all UIAStaticText elements directly descended from a tabbar $('tabbar > text'); // all buttons inside the window named 'Main' $('window[name=Main] button') // the text field with a value of 'Search' $('textfield[value=Search]') // all buttons plus a specific element by name $('button, #Continue')

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Bwoken iOS UIAutomation Test Runner http://bendyworks.github.io/bwoken/

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Bwoken adds easy commands to run tests from CLI

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Bwoken adds easy commands to run tests from CLI $ rake

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Bwoken adds easy commands to run tests from CLI $ rake $ rake compile && rake test equals to:

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Bwoken adds easy commands to run tests from CLI $ rake $ rake compile && rake test $ SIMULATOR=true rake

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Bwoken adds easy commands to run tests from CLI $ rake $ rake compile && rake test $ SIMULATOR=true rake $ RUN=iphone/focused_test rake

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Bwoken adds easy commands to run tests from CLI

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Bwoken adds easy commands to run tests from CLI allows you to run tests with CoffeeScript

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Bwoken adds easy commands to run tests from CLI allows you to run tests with CoffeeScript fill = (container, liquid = "coffee") -> "Filling the #{container} with #{liquid}..."

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Bwoken adds easy commands to run tests from CLI allows you to run tests with CoffeeScript fill = (container, liquid = "coffee") -> "Filling the #{container} with #{liquid}..." var fill; fill = function(container, liquid) { if (liquid == null) { liquid = "coffee"; } return "Filling the " + container + " with " + liquid + "..."; };

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Bwoken adds easy commands to run tests from CLI allows you to run tests with CoffeeScript http://coffeescript.org

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UIAutomation + Tuneup JS + Bwoken + CoffeeScript

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UIAutomation + Tuneup JS + Bwoken + CoffeeScript #import "../helpers/Caremobile.js" Caremobile.resetAppState() SignInScreen.signIn('testuser', 'testpass') test 'Caregiver adds a beloved', (target, app) -‐> name = 'Kurt Cobain' BelovedsScreen.tapAddButton() ProfileScreen.setFields({ 'full name': name }) ProfileScreen.tapSaveButton() BelovedsScreen.assertBeloved({ regex: new RegExp(name, "g") }) test 'Caregiver edits a beloved', (target, app) -‐> ...

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UIAutomation + Tuneup JS + Bwoken + CoffeeScript class BelovedsScreenClass extends BaseListScreen assertBeloved: (args) -‐> @assertCell args belovedsList: -‐> Caremobile.window().tableViews()['List of loved ones'] tapBelovedNamed: (name) -‐> @belovedsList().cells()[name].tap() BelovedsScreen = new BelovedsScreenClass

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UIAutomation + Tuneup JS + Bwoken + CoffeeScript $ RUN=beloveds rake

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UIAutomation + Tuneup JS + Bwoken + CoffeeScript $ RUN=beloveds rake

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UIAutomation + Tuneup JS + Bwoken + CoffeeScript Passing custom params to the app. https://github.com/carezone/bwoken/commit/195f2f9

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UIAutomation + Tuneup JS + Bwoken + CoffeeScript Passing custom params to the app. desc "Run tests" task :run_tests do ENV['INSTRUMENTS'] = "-‐e TEST_MODE 1" Rake::Task[:default].invoke end Add a new task to your Rakeﬁle: https://github.com/carezone/bwoken/commit/195f2f9

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UIAutomation + Tuneup JS + Bwoken + CoffeeScript Passing custom params to the app. BOOL IsTestMode() { return (getenv("TEST_MODE") != nil); } https://github.com/carezone/bwoken/commit/195f2f9

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Unit testing

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SetTestingKit.framework

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SetTestingKit.framework @implementation MyAppTests -‐ (void)setUp { [super setUp]; // Set-‐up code here. } -‐ (void)tearDown { // Tear-‐down code here. [super tearDown]; } -‐ (void)testExample { STFail(@"Unit tests are not implemented yet in MyAppTests"); } @end

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SetTestingKit.framework

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SetTestingKit.framework

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SetTestingKit.framework https://github.com/mysterioustrousers/MTDates

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SetTestingKit.framework

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SetTestingKit.framework

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Kiwi https://github.com/allending/Kiwi

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Why do I like Kiwi. expectations

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Why do I like Kiwi. expectations [[subject should] beTrue]; [[subject should] equal:(id)anObject]; [[subject should] beLessThan:(id)aValue]; [[@"Hello, world!" should] containString:@"world"]; [[subject should] beKindOfClass:(Class)aClass]; [[subject should] haveCountOf:(NSUInteger)aCount]; NSArray *array = [NSArray arrayWithObject:@"foo"]; [[array should] have:1] item]; [[subject should] receive:(SEL)aSelector andReturn:(id)aValue]; [[theBlock(^{ ... }) should] raise];

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Why do I like Kiwi. expectations ‘describe’, ‘context’, ‘before each’, ‘before all, ‘after each’, ‘after all’ blocks

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Why do I like Kiwi. expectations ‘describe’, ‘context’, ‘before each’, ‘before all, ‘after each’, ‘after all’ blocks mocks objects that imitate a class, or look like they conform a protocol

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Why do I like Kiwi. id mock = [Animal mock]; [[mock should] beMemberOfClass:[Animal class]]; [mock stub:@selector(species) andReturn:@"P. tigris"]; [[mock.species should] equal:@"P. tigris"]; [Cruiser stub:@selector(classification) andReturn:@"Not a moon"]; [[[Cruiser classification] should] equal:@"Not a moon"];

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Got it. Show me real code!

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Got it. Show me real code! #import #import "Matrix.h" SPEC_BEGIN(MatrixSpec) describe(@"Matrix", ^{ __block Matrix *matrix = nil; context(@"initialized with size of 3", ^{ beforeEach(^{ matrix = [[Matrix alloc] initWithSize:3]; }); it(@"has size of 3", ^{ [[theValue(matrix.size) should] equal:theValue(3)]; }); context(@"sets value 3 to row 2 column 1", ^{ beforeEach(^{ [matrix setValue:@3 forRow:2 column:1]; }); ... }); }); }); SPEC_END

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Got it. Show me real code! describe(@"CalendarEvent", ^{ __block CalendarEvent *event = nil; beforeEach(^{ NSManagedObjectContext *context = [NSManagedObjectContext makeMainQueueContext]; event = [CalendarEvent insertIntoContext:context]; }); context(@"when current time is 23:44", ^{ it(@"starts at 00:00", ^{ [[NSDate stubAndReturn:[NSDate dateFromYear:2012 month:1 day:23 hour:23 minute:44]] date]; [event setupDefaultDates]; [[event.startsAt should] equal:[NSDate dateFromYear:2012 month:1 day:24 hour:0 minute:0]]; }); }); });

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Alternatives

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Cedar a bunch of matchers stubs and mocks describe and context blocks before each and after each blocks pending specs focused specs reporters https://github.com/pivotal/cedar

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-‐ (void)testAuthorizationHeaderWithInvalidUsernamePassword { [Expecta setAsynchronousTestTimeout:5.0]; __block NSHTTPURLResponse *response = nil; [self.client getPath:@"/basic-‐auth/username/password" parameters:nil success:NULL failure:^(AFHTTPRequestOperation *operation, NSError *error) { response = operation.response; }]; expect(response.statusCode).will.equal(401); } OCMock + Expecta

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Other alternatives OCMochito OCHamcrest GHUnit ... http://nshipster.com/unit-testing/

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Build and run from CLI

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Build and run from CLI xcodebuild

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xcodebuild $ xcodebuild -‐workspace MyApp.xcworkspace \ -‐scheme MyScheme \ -‐sdk iphonesimulator \ -‐configuration Release \ build

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xcodebuild desc "Run unit tests" task :unittest do kill_simulator cmd = "xcodebuild -‐workspace #{WORKSPACE_NAME}.xcworkspace \ -‐scheme #{SCHEME_NAME} \ -‐sdk iphonesimulator \ -‐configuration Release RUN_UNIT_TEST_WITH_IOS_SIM=YES \ build" stdout = TestOutput.new(STDOUT) stderr = TestOutput.new(STDERR) status = Open4.spawn(cmd, :stdout => stdout, :stderr => stderr, :status => true) exit status.exitstatus end

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xcodebuild

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Build and run from CLI xcodebuild

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Build and run from CLI xcodebuild xctool

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xctool $ brew install xctool

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xctool $ brew install xctool $ xctool -‐workspace App.xcworkspace\ -‐scheme App\ test

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xctool .xctool-args [ "-‐workspace", "App.xcworkspace", "-‐scheme", "App" ]

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xctool .xctool-args [ "-‐workspace", "App.xcworkspace", "-‐scheme", "App" ] $ xctool test

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xctool

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Continuous integration (CI)

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Continuous integration (CI) Jenkins Travis CI http://jenkins-ci.org http://travis-ci.org

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Travis CI Provides hosted CI service free for open source (public repo) paid for private repositories A hosted continuous integration service for the open source community

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Travis CI A hosted continuous integration service for the open source community language: objective-‐c before_install: -‐ brew update -‐ brew install xctool script: xctool test Setup for open source project Add .travis.yml ﬁle at root of your repository

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Travis CI A hosted continuous integration service for the open source community Login at http://travis-ci.org and enable it Add .travis.yml ﬁle at root of your repository Setup for open source project