In this chapter, we’ll look at the various ways in which you can extend Rust’s testing capabilities and what other kinds of testing you may want to add into your testing mix. Rust comes with a number of built-in testing facilities that are well covered in The Rust Programming Language, represented primarily by the #[test] attribute and the tests/ directory. These will serve you well across a wide range of applications and scales and are often all you need when you are getting started with a project. However, as the codebase develops and your testing needs grow more elaborate, you may need to go beyond just tagging #[test] onto ...
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