TestDrivenDevelopment

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Overview

Test Driven Development (TDD) is a method of designing software.

It goes roughly as follows: write UnitTests for the code before you write the code itself.

Why do it the "non-natural" way, then? Well, there are some benefits and very few - if any - drawbacks:

  • Coding tests means you have to call your non-existing code with all the parameters thus forcing you to think how your library should work, thus it fixes the Signature of your code

  • You realize many errors in the code before you even wrote it, especially design-related errors
  • You will get better estimate how long coding will take

It is very important to emphasize TDD is not a testing methodology; it is a design methodology.

More information