DDD6. http://blog.benhall.me.uk/2007/11/ddd6-post-event.html

1. Ben Hall
Ben@BenHall.me.uk
Blog.BenHall.me.uk
TESTING YOUR APPLICATIONS
WITH MBUNIT

2. Who am I?
 Test Engineer @ Red Gate Software
 Based in Cambridge
 MbUnit Core Commit Member
 Actively involved with the project for past
18-24 months
 NxtGenUG Member
 Blog.BenHall.me.uk

3. Agenda
 Unit Testing and Integration Testing
 Demo
 Tools and Frameworks
 Database Layer
 Business Layer
 User Interface
 MbUnit v3 and the Gallio Testing Platform
 Summary

4. Unit Testing
 Written by the developer
 Focus on happy day scenarios
 Ensures everything works as expected
 Support change of inner workings
 Support inexperience developers
 Code is less of a black box
 Manual testing is boring!

5. Integration Testing
We already have unit tests, why do we also
need integration tests?
 Ideally written by a tester, however
generally written by a developer.
 Unhappy scenarios
 End-To-End scenarios
 Does the code meet customer
requirements

6. MbUnit 2.4
 www.MbUnit.com
 Advanced testing framework
 Open Source
 Developed a number of years ago by Peli
(now works for Microsoft Research)
 Actively developed by a core team of 15

7. Tools and Frameworks
Demo
•MsTest
•NUnit
•MbUnit v2.4
•TestDriven.Net
•ReSharper

8. Scenario
 Core features of a e-commerce site
 Users can view products, search and place
orders.
 Linq to SQL for database access
 ASP.net 2.0 for UI
 Web service for payment processing

9. Databases
Demo
•Testing Linq to SQL
•Transactions / RollBack

10. Business Layer
Demo
•Rhino Mocks to mock away from database
•Mocking external services
•RowTest
•Data Driven Tests
• MbUnit Asserts
•Custom Asserts

11. UI Testing
 Don’t Automate!
 At the moment its:
 Hard work
 Leads to fragile tests
 No ‘good’ solution
 There are solutions available...

12. WatiN - Web Application Testing
Demo
•Automate web application testing
•Supports Ajax
•Supports popups and logins.
•http://watin.sourceforge.net

13. UI Testing
 Model View Controller – MVC
 Ruby on Rails
 MonoRail
 ASP.net MVC
 Model View Presenter – MVP
 Difficult with WinForms/WPF
 No other UI framework?

14. ASP.net MVC
Code Demo
•Released ‘Shortly’
•CTP as part of ASP.net Futures
•Alternative to WebForms – Not a
replacement
•Designed for testability

15. MbUnit v3
 Alpha-1 release soon.
 Based on the Gallio Testing Platform.
 Goals
 Improved documentation and support
 Take testing to the next level
 Accommodate more testing styles.
 www.MbUnit.com

16. Gallio
 Gallio is an open, extensible, and neutral
testing platform.
 Supports multiple .Net test frameworks
including MbUnit, NUnit, NBehave, xUnit.Net
and others.
 Share common components with community
 More information on the wiki
 http://code.google.com/p/mb-unit/

17. MbUnit v Nunit v MsTest v
XUnit
 Whatever works best for you....
 Nunit is simple and straightforward
 MbUnit is powerful and versatile
 MsTest – Don’t. Number of
problems, 2008 has a number of
improvements.
 Xunit – New boy. Some nice ideas...

18. Resources
 Books
 xUnit Test Patterns – Gerard Meszaros
 The Art of Unit Testing - Roy Osherove
 Blogs
 My blog - Blog.BenHall.me.uk
 CodeBetter.com
 Tools
 MbUnit – www.MbUnit.com
 TestDriven.Net – www.TestDriven.net
 Rhino Mocks – www.Ayende.com
 TypeMock – www.TypeMock.com
 WatiN – http://watin.sourceforge.net

19. Summary
 Keep things simple
 Keep things small
 Abstraction is key
 ASP.net MVC is the future!
 MbUnit v3 and Gallio are coming soon.
 Thank you!
 Slides + Code on my blog Blog.BenHall.me.uk

20. Questions