unit testing patterns and anti-patterns

25
St Louis Day of .NET 2011 Unit Testing Patterns and Anti- Patterns Steve Bohlen Senior Software Engineer SpringSource/VMware E-Mail: [email protected] Blog: http://blog.unhandled-exceptions.com Twitter: @sbohlen

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Unit Testing Patterns and Anti-Patterns. Steve Bohlen Senior Software Engineer SpringSource /VMware E-Mail: [email protected] Blog: http://blog.unhandled-exceptions.com Twitter: @ sbohlen. Do I suck?. Let me (and the world) know!. http://spkr8.com/t/8096. Steve Bohlen. - PowerPoint PPT Presentation

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Page 1: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Unit Testing Patterns and Anti-Patterns

Steve BohlenSenior Software EngineerSpringSource/VMware

E-Mail: [email protected]: http://blog.unhandled-exceptions.comTwitter: @sbohlen

Page 2: Unit Testing Patterns and Anti-Patterns
Page 3: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Do I suck?Let me (and the world) know!

http://spkr8.com/t/8096

Page 4: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Steve BohlenNearly 20 years developing softwareLISP, Delphi, C/C++, VB, VB.NET, C#Senior Engineer Springsource/VMwareCo-Founder, NYC Alt.Net User Group

http://nyalt.netCo-Organizer, NYC DDD User Group

http://dddnyc.orgContributor: various OSS projects

Nhibernate http://www.nhforge.orgNDbUnit http://www.googlecode.com/ndbunitSpring.NET http://www.springframework.net

blog: http://blog.unhandled-exceptions.come-mail: [email protected]: @sbohlen

CYND D D

Page 5: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

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Page 6: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Page 7: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Page 8: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Definition: Pattern

In software engineering, a design pattern is a general reusable solution to a commonly occurring problem in software design.that leads to commonly occurring problems in software design.

Anti-

Anti-

Page 9: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Page 10: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Page 11: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Running Tests

Page 12: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Speedy Tests

Page 13: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Naming Tests

Page 14: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Descriptive Assertions

Page 15: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Repetition

Page 16: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: False Positives

Page 17: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Faked Out!

Page 18: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Maintenance

Page 19: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Testing Exceptions

Page 20: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Test Coverage

Page 21: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Organizing Tests

Page 22: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Data Dependency

Page 23: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

Challenge: Multiple Assertions

Page 24: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

And now for something completely different…

…code!

Page 25: Unit Testing Patterns and Anti-Patterns

St Louis Day of .NET 2011

fini

Steve BohlenSenior Software EngineerSpringSource/VMware

E-Mail: [email protected]: http://blog.unhandled-exceptions.comTwitter: @sbohlen

http://spkr8.com/t/8096