This document provides an overview of using Pex to automatically generate unit tests. It begins with a quick demo of NUnit and manually writing unit tests, then using Pex to automatically generate additional tests. The document lists that Visual Studio, NUnit, and Pex are all free tools needed and concludes with the top five benefits of Pex being that it can generate tests the user may not have thought of and help explore code and assemblies in an automated way.

2. Joe J Collins
joejcollins@gmail.com

3. Microsoft Pex
Testing on the Cheap

6. Demo
Quick overview of NUnit
Unit test (watch if fail)
Method (watch it succeed)
Test with Pex
Another method
One more method

7. What you need?
it is all free
Visual Studio
(http://www.microsoft.com/express/)
Nunit
(http://www.nunit.org/)
Pex
(http://research.microsoft.com/en-us/projects/Pex/)
Batch file to run Pex

8. Top Five
Not ‘Arf!

9. Top Five
Not ‘Arf!
Assembly exploration

10. Top Five
Not ‘Arf!
Code exploration
Assembly exploration

11. Top Five
Not ‘Arf!
Base line tests for code
Code exploration
Assembly exploration

12. Top Five
Not ‘Arf!
Automatically creating unit tests
Base line tests for code
Code exploration
Assembly exploration

13. Top Five
Not ‘Arf!
Tests you hadn’t thought of
Automatically creating unit tests
Base line tests for code
Code exploration
Assembly exploration