Summary

In this chapter, we learned about testing in Clojure. First, we explored why testing is important. We looked at some of the benefits, such as reduced maintenance costs and bug fixing. We also learned what testing methodologies are available. We focused on unit testing as this is the most common type of test written by developers.

Next, we explored four testing libraries available in Clojure. We started with the standard clojure.test library, which provides a rich set of testing features. The second library we learned about was Expectations. It allows us to write concise tests as it focuses on readability.

The Midje library allowed us to explore top-down test-driven development (TDD). We created a test for the main function and stubs for functions that would be implemented in the future. TDD allows us to focus on testing functions' features without worrying about implementing all of the subfunctions used.

The last library used was test.check, which introduced us...