Below and Beneath TDD: Test Last Development and Other Real-World Test Patterns

Noel Rappin (Obtiva)
General
Location: Ballroom B
Average rating: ***..
(3.59, 37 ratings)

Everybody knows about test/fail/code/refactor and red/green/clean. When testing in the wild, though, everybody slips and slides a little. This talk explores what makes Test Driven Development really work by showing what happens where the process breaks down, focusing on rapid feedback as the key to a successful test-driven process. It also creates a vocabulary for talking about malformed test processes. These sort-of test processes include:

  • Data Driven Testing (test/code/insert result into test/pass)
  • Test Next Development (code/code/test/refactor)
  • Test Last Development (code/code/code/code/code/test)
  • Coverage Driven Testing
  • Tautology Based Testing
  • Big Test Setup Testing (setup/test/test/test/code/refactor)

I wrote an earlier version of these ideas on the Pathfinder blog

Photo of Noel Rappin

Noel Rappin

Obtiva

Noel Rappin is the Vice President of Rails Development at Pathfinder Development. He is the author of Professional Ruby on Rails from Wrox and Rails Test Prescriptions: Keeping your application healthy, available at railsprescriptions.com. He has over a decade of experience in web application development. Noel is the co-author of wxPython in Action and O’Reilly’s Jython Essentials.

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Comments

Russ Schissler
05/05/2009 3:36pm PDT

Decent, info is on the mark. More interaction with some examples of actual test environs would’ve improved the PPT-only presentation.

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