Implementation code should be located in src/main/java and test code in src/test/java. Separate the implementation from the test codeīenefits: avoids accidentally packaging tests together with production binaries many build tools expect tests to be in a certain source directory.Ĭommon practice is to have at least two source directories. Choosing “more popular” conventions has the advantage that newcomers to the team can get up to speed fast since they can leverage existing knowledge to find their way around. Most important is that everyone on the team knows what conventions are used and is comfortable with them. The logic is that any naming convention is better than none. There are many naming conventions in use and those presented here are just a drop in the sea. Another benefit is that many tools expect that those conventions are followed.

Naming conventions help organize tests better so that it is easier for developers to find what they’re looking for. Practices have been separated into following categories: The resulting unit tests are just an extremely useful by-product.įor more information, please read the Test-Driven Development (TDD) article. Test-driven development is about development (and design), specifically improving the quality and design of code.

Test-driven development is not about testing.

Write just enough implementation code to make the test pass.

Run the test (there is no implementation code, test does not pass).

TDD life-cycleīefore explaining best practices, it is important to understand the TDD life-cycle. Code is written in Java and uses JUnit as the testing framework. Implementation is in the source directory src/main/java and tests can be found in src/test/java. Source code for all examples can be found in the github repository. For example, most (if not all) unit testing practices should be used when doing TDD.

Some of the best practices described here are inherited from other sets of practices and used when doing TDD. With an informed decision at hand, they can be adopted as they are, modified to serve better specific situation or fully discarded. On the other hand, best practices should not be followed blindly. Not following them would make us “reinvent the wheel” and struggle with the same problems already solved by others. This article will be built on examples from the previous one.īest practices are solutions to a set of problems under certain situations. Now it’s time to learn what the best TDD practices are. It went from writing first test and its implementation to having a set of requirements fully tested and developed. In the previous article Test Driven Development (TDD): Example Walkthrough an example of TDD was given.

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