InfoQ Homepage TDD Content on InfoQ
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NUnit 2.5 had been Released
After nearly a year's work, NUnit 2.5 has finally released. This release includes: Data-Driven Tests, Inline Expected Exception Tests, Generic and Lambda support, Out of process execution of tests and Source Code Display.
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Rails BDD with Macros, I18n,... with Remarkable
There are many ways to develop, test and integrate your Rails application: from TDD with the basic Test:Unit or ZenTest, to BDD with RSpec, Shoulda or Cucumber. Remarkable tries to unify the syntax and adds some more flavors to make your Rails BDD painless.
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Presentation: 10 Ways to Improve Your Code
In this presentation recorded during QCon SF 2008, Neal Ford, an architect at ThoughtWorks, shows 10 ways to write better code. This is practical advice for developers, but application architects can benefit from it too.
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J.B. Rainsberger: "Integration Tests Are A Scam"
Well-known agilist and TDD expert J.B. Rainsberger has begun a series of posts to explain why his experience has led him to the thought-provoking conclusion that "integration tests are a scam".
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Presentation: The Ethics of Error Prevention
No one wants programming errors. We have many tools to detect and correct errors in code. We also have a number of techniques we can use to prevent the introduction of errors. In this presentation, Michael Feathers t looksat error prevention while posing a number of interesting questions.
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Moq 3.0 Released
Version 3.0 RTM of the popular Moq .NET mocking library is now available. Moq 3.0 includes Silverlight support, improved event and property mocking, Pex integration, and improved samples.
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Empirical Studies Show Test Driven Development Improves Quality
A paper first published in the Empirical Software Engineering journal reports: "TDD seems to be applicable in various domains and can significantly reduce the defect density of developed software without significant productivity reduction of the development team." The study compared 4 projects, at Microsoft and IBM that used TDD with similar projects that did not use TDD.
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Spolsky vs Uncle Bob
The last few weeks, a public dispute has been going on between Joel Spolsky and Robert C Martin (Uncle Bob) about Test-Driven Development and about the SOLID principles of OO design. Here is a summary and review of the match.
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Refactoring Not a Substitute for Design
A member of the stack overflow community asked "Is design now a subset of refactoring?" The question highlights a common misunderstanding about the agile approach to emergent design. A common agile mantra is: "Test. Code. Refactor. Repeat!" This approach doesn't replace design; it simply spreads the work out over the life of the project.
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Interview: Software Design Helps Being Agile
In this interview made by InfoQ’s Deborah Hartmann during Agile 2008, Rebecca Wirfs-Brock talks about software design, the need for good design and the technical debt that might accumulate slowing down the development process. The conclusion is that agile developers should not disregard design.
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Presentation: What Drives Design?
In this presentation held during OOPSLA 2008, Rebecca Wirfs-Brock reviews various forms of driven development in order to understand the principles and values of several design practices used today. By comparing them, a designer will get a broader view over design and will better understand which design practice is more appropriate for him.
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"Classic" versus "Mockist" TDD, Distinction Real?
Hot in the TDD Yahoo group is a discussion concerning the perceived continuum between the "Classic" and "Mockist" TDD. Steve Freeman, Nat Pryce, Michael Feathers, Dale Emery, and many more discuss terminology and describe their approaches. The discussion also debates whether there even really exists such a continuum, and if so, what distinguishes the approaches that represent it's extremes?
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Article: Making TDD Stick: Problems and Solutions for Adopters
In this article, Mark Levison addresses the difficulties encountered by developers willing to adopt TDD, the reasons why many start using TDD but give up after a short period of time, and what could be done to help developers make TDD a habit.
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Presentation: Manager's Introduction to Test-Driven Development
In this presentation filmed during Agile 2008, Dave Nicolette and Karl Scotland try to introduce non-technical managers to one of the most popular Agile development techniques: Test-Driven Development (TDD). The presentation intends to be a primer for managers who want to understand the value of TDD, and of Agile in general, in software development.
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Forget Your Debugger, Use The "Saff Squeeze"
Kent Beck, renowned co-father of XP, TDD, and JUnit itself, tells a story about tracking down a defect in a new JUnit feature, JUnitMax, with unit tests instead of a debugger. He explains a method shown to him by current JUnit lead developer, David Saff, where a high level unit test is recursively inlined until a super concise test is created down at the very root of the defect.