Java Clean Code Tutorial #12 – Please Write Unit Tests, lets go FAST!

Описание: Having a unit test suite for your code is the secret to shipping software really fast. Why?

Having a full unit test suite for each class and public method (not including getters / setters etc) enables developers to make changes to the codebase with high confidence that they have not broken existing functionality. Developers simply need to run the existing tests after they have made their changes to verify functionality still works. If something is broke, the unit test will identify exactly the class and method in the code.

Unit tests help you better understand the design of your code. This stops sloppy code from being produced that just works, and will be a nightmare to maintain in the future. Having tests allows you to specify and test the conditions that are subject to that piece of code. Tests also should have descriptive names of what they are doing, this can help with visibility into what works and what is broken after a change.

Unit tests play and fit in nicely to continuous delivery and continuous integration tools such as Bamboo and Jenkins. These can also give you visual feedback and provide metrics.

Software is written once and read hundreds of times. So let’s make our fellow developers life easier.

Why clean code?
Simple. Clean code allows us to confidently make changes and deliver more features quickly to our customers.

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STOP THE ROT.

Till episode 13,
Philip

Recorded in the Mourne Mountains, Slieve Donard. Newcastle, County Down, Northern Ireland.

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