What is Test-Driven Development (TDD)?

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Software development is complicated, often comprised of a number of methods. Test-driven development is an advanced approach to the development process that relies on repetitive unit testing on source code. The point of this method is to write the code, step-by-step, testing along the way, rather than writing all the code at once and working out the bugs from the completed end code.

The tests run on a “red, green, refactor” model. Essentially, the code is first written with just enough data to fail the first automated test. From there, the developers make small changes, allowing the code to pass with the simplest modification. From there, this process is carried out over a series of similar tests. Each update that is made requires a test. If the code fails, the developer goes back to make the necessary changes to produce a passing test. This process of writing and testing is continued throughout the development process until the code is complete, allowing it to develop organically.

The purpose of TDD is to create a working software system by letting the tests do some of the work for you. This method allows developers to recognize issues early on, and to pinpoint where the bugs are located. The structure of the code is determined by the tests at each level written. Once the entire code is done, small twerks can be made to perfect it to user standards. Using TDD is extremely useful because the tests uncover whether or not new changes or advancements result in bugs or faults. Liberty Fox Tech can work with you to create TDD software for your company.

Read more information here: https://marcabraham.wordpress.com/2012/04/03/what-are-the-key-principles-of-test-driven-development/

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