After
It’s easy to write a lot of code quickly. It’s just as easy to let that code get dirty, to the point where it becomes difficult to step through. Unit tests provide the safeguards you need to clean up code messes without breaking things. In this chapter you learned techniques for keeping your system clean continually, which will enable you to stem much of the rot inevitable in your system.
As you begin to sweep away the small bits of dust in your system, you’ll start to see larger design concerns. Next up, you’ll learn how to lean on unit tests again to address these larger design concerns.
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