Without readability the tests you write are almost meaningless. Readability is the connecting thread between the person who wrote the test and the poor soul who has to read it a few months later. Tests are stories you tell the next generation of programmers on a project. They allow a developer to see exactly what an application is made of and where it started.
This section is all about making sure the developers who come after you will be able to maintain the production code and the tests that you write, while understanding what they’re doing and where they should be doing it.
There are several facets to readability: