This document discusses Test Driven Development (TDD), Continuous Integration (CI), and Continuous Delivery (CD) for mobile development. It defines TDD, CI, and CD and provides examples of implementing each for both Android and iOS development. For TDD, it demonstrates writing tests first and then code to pass the tests. For CI, it recommends automating the build and test process. And for CD, it suggests using services like TestFlight to automatically deliver new builds to testers.

1. ©2013 GlobalLogic Inc. CONFIDENTIAL

2. CONFIDENTIAL©2013 GlobalLogic Inc.
Mobile Dev Guide:
TDD + CI + CD
TDD: Test Driven Development
CI: Continuous Integration
CD: Continuous Delivery

3. ©2013 GlobalLogic Inc. CONFIDENTIAL
What is TDD? Why? How?
What is CI? Why? How?
What is CD? Why? How?
01
02
03

4. 4 CONFIDENTIAL
Test Driven Development: Basics

5. 5 CONFIDENTIAL

6. 6 CONFIDENTIAL
TDD: Basics
− First understand the requirement
− Create test that tests this
requirement
− Run test and expect FAIL
− Provide basic implementation
− Run test and expect PASS
− Improve your implementation
− Run test after improvements to
test changes

7. 7 CONFIDENTIAL
TDD: Example
− Requirement: validate email to match common email mask.
− username: [a-zA-Z0-9-_]+ (e.g. My_user-09)
− company: [a-zA-z0-9]+ (e.g. globallogic911)
− domain: [a-zA-Z]{2,} (e.g. com)
− E-mail structure: [username]@[company].[domain]
− Valid e-mail: test-user@domain.com
− Invalid e-mail: $uper~U$er123@ideal-company.z

8. 8 CONFIDENTIAL
TDD: Example (cont.)
− Simple test:
public void testEmailValidationForValidEmail() {
//GIVEN
String validEmail = "sergiy-nezdoliy@globallogic.com";
//WHEN
bool result = SNUtilities.validateEmail(validEmail);
//THEN
assertTrue("Mail is valid: " + validEmail, result);
}

9. 9 CONFIDENTIAL
TDD: Example (cont.)
− Simple implementation:
public static bool validateEmail(String intpuMail) {
return FALSE;
}
//Leads to test FAIL
//Refactor code to pass test
public static bool validateEmail(String intpuMail) {
boolean isValidEmail = false;
Pattern pattern = Pattern.compile("^[_A-Za-z0-9-]+@[A-Za-z0-9-]+((.[A-Za-z]{2,}){1}$)");
isValidEmail = pattern.matcher(inputMail).matches();
return isValidEmail;
}
//Run test and – voila, PASSED

10. 10 CONFIDENTIAL
TDD: Example (cont.)
− Improve?
− Empty string
− Null value
− Extended mask for regexp (including dot support etc)
− Do not forget to test negative cases 

11. 11 CONFIDENTIAL
TDD: Example (cont.)
− As a result:
//TESTS
public void testValidateNullEmail() {...}
public void testValidateEmptyValue() {...}
public void testValidateInvalidEmail() {...}
public void testValidateValidEmail() {...}
//IMPLEMENTATION
public static boolean validateEmail(String inputMail) {
boolean isValidEmail = false;
if (inputMail != null && inputMail.length() > 0) {
Pattern pattern = Pattern.compile
("^[_A-Za-z0-9-]+(.[_A-Za-z0-9]+)*@[A-Za-z0-9-]+(.[A-Za-z0-9-]+)*((.[A-Za-z]{2,}){1}$)");
isValidEmail = pattern.matcher(inputMail).matches();
}
return isValidEmail;
}

12. 12 CONFIDENTIAL
Test Driven Development &

13. 13 CONFIDENTIAL
TDD: Android

14. 14 CONFIDENTIAL
TDD: Android tools
− Unit tests:
− Junit,
− Instrumentation
− UI tests:
− Instrumentation,
− Robotium, Robolectric,
− monkey, monkeyrunner
− Mocks:
− android-mock:

15. 15 CONFIDENTIAL
TDD: Android – What to test?
− Formatters
− Parsing, serializing, marshaling data from server
− Fields input validation (e.g. e-mail field)
− Any inner calculations
− Entities, models, DAO objects
− Database layer
− UI where possible (functional and integration testing)
− …

16. 16 CONFIDENTIAL
TDD: Android Example
//IMPLEMENTATION
public static boolean validateEmail(String inputMail) {
boolean isValidEmail = false;
if (inputMail != null && inputMail.length() > 0) {
Pattern pattern = Pattern.compile
("^[_A-Za-z0-9-]+(.[_A-Za-z0-9]+)*@[A-Za-z0-9-]+(.[A-Za-z0-9-]+)*((.[A-Za-z]{2,}){1}$)");
isValidEmail = pattern.matcher(inputMail).matches();
}
return isValidEmail;
}
//TESTS
public void testValidateNullEmail() {...}
public void testValidateEmptyValue() {...}
public void testValidateInvalidEmail() {...}
public void testValidateValidEmail() {...}

17. 17 CONFIDENTIAL
Test Driven Development &

18. 18 CONFIDENTIAL
TDD: iOS tools
− Unit tests:
− OCUnit, SenTestingKit (embedded into Xcode),
− GHUnit
− UI tests:
− UI Automation,
− Frank, Appium … (no success  )
− Mock:
− OCMock

19. 19 CONFIDENTIAL
TDD: iOS– What to test? (TODO)
− Core Data layer
− Parsing, serializing, marshaling data from server
− Fields input validation (e.g. e-mail field)
− Any inner calculations
− Entities, models, DAO objects
− UI where possible (functional and integration testing)
− …

20. 20 CONFIDENTIAL
TDD: iOS Example
//IMPLEMENTATION
+ (BOOL) validateEmail:(NSString *)inputEmail{
BOOL isEmailValid = NO;
if (inputEmail) {
NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
isEmailValid = [emailTest evaluateWithObject:inputEmail];
}
return isEmailValid;
}
//TESTS
- (void)testValidateEmailWithValidEmail{
//GIVEN
NSString *validEmail = @"test-user01@domain.com";
//WHEN
BOOL result = [DemoUtils validateEmail:validEmail];
//THEN
STAssertTrue(result, @"Valid with email: %@", validEmail);
}

21. 21 CONFIDENTIAL
Continuous Integration: iOS and Android

22. 22 CONFIDENTIAL
Continuous Integration: Why?
− Reduce risks:
− Fixing bugs late costs more
− Lack of project visibility (metrics, changelogs)
− Lack of deployable software
− Reduce repetitive manual processes
− Generate deployable software any time at any place
− Test early and often
− No painful waits for next build
− Visible process of building your project

23. 23 CONFIDENTIAL
Continuous Integration: Schema
Version Control System Build servers
QA, clients, managers
Developers
CI Server
CI Feedback
1. Check In
2. Check Out
3. Indicate
Change
5. Set Status
4. Report
Results
6. Notify

24. 24 CONFIDENTIAL
Continuous Integration:
− Cross-system (Windows, Linux, Mac OS)
− Extensible (plenty of plugins)
− Provides good visibility of builds
− Free
− Chuck Norris supports Jenkins!

25. 25 CONFIDENTIAL
CI: Example of dashboard

26. 26 CONFIDENTIAL
Continuous Integration &

27. 27 CONFIDENTIAL
Continuous Integration: How?
− Xcode command line tools (with some hacks)
− Run tests from command line and fail in case if failed tests
− ocunit2junit + gcovr for code coverage
− keychain issues
− Provisioning profiles import
− Jenkins should run only on Mac

28. 28 CONFIDENTIAL
Continuous Integration: iOS
CI: TDD & Code coverage?
− Using gcovr tool
− Configure project to generate .gcda data (Xcode 4.6.x):
− Add to “Other C flags”: -lgcov, -ftest-coverage, -lprofile_rt
− Set “Generate Test Coverage Files” to YES
− Set “Generate Profiling Code” to YES
− run tests -> ocunit2junit to get tests results
− configure Jenkins job to handle test reports and code coverage
(Cobertura)

29. 29 CONFIDENTIAL
Continuous Integration &

30. 30 CONFIDENTIAL
Continuous Integration: How?
− Using ant
− Using Android build tools
− Using Jenkins plugin for Android
− Using bash
− Analyzing tests results? Hack for tests needed in build.xml
− Take a look at android-lint plugin:
− scans your Android projects and reports on potential bugs, performance, security and
translation issues, plus more

31. 31 CONFIDENTIAL
Continuous Integration: iOS
Continuous Integration: TDD?
− Add separate target to build.xml
− Analyze results
− Fail build in case if tests fail

32. 32 CONFIDENTIAL
Continuous Delivery

33. 33 CONFIDENTIAL
Continuous Delivery: Why?
− Allows to provide new builds to test continuously
− Automation of providing builds to QA and customers
− Painless releases, quick feedbacks

34. 34 CONFIDENTIAL
Continuous Delivery &

35. 35 CONFIDENTIAL
Continuous Delivery: How?
− Installation over the air
− Downloading build as artifact from Jenkins
− Uploading to share (Android only)
− Installation over Wi Fi (iOS – manual)
− Cloud services: AppBlade, Knappsack, HockeyApp … - not Free 
− …
− TestFlightApp – ideal free solution to manage your app

36. 36 CONFIDENTIAL
Continuous Delivery: TestFlight

37. 37 CONFIDENTIAL
TestFlightApp: Why?
− Free
− Supports automatic uploading (can be part of Jenkins job)
− May be not embedded into app at all.
− Email notifications
− Easy to install on any allowed device (which is in Ad Hoc profile)
− Cross platform (iOS, Android)
− Provides additional services (crash reports, checkpoints etc)
− You need to include TestFlight SDK into your project for this

38. 38 CONFIDENTIAL
TestFlightApp: example of upload
curl http://testflightapp.com/api/builds.json
-F file=@$IPA
-F api_token=’<YOUR API TOKEN>'
-F team_token=’<YOUR TEAM TOKEN>'
-F notes="Uploaded on ${BUILD_ID} (Build#: '${BUILD_NUMBER}') (Build version#: '1.0').nChanges: $git_notes"
-F notify=True
-F distribution_lists=”QA"

39. 39 CONFIDENTIAL
Conclusion

40. CONFIDENTIAL©2013 GlobalLogic Inc.
Skype: sergey.nezdoliy
Twitter: @sergey_nezdoliy
Mail: sergey.nezdoliy@gmail.com
Thank you