One test is worth a thousand expert opinions.

Bill Nye, The Science Guy

Chapter 5Agile Feedback

In an agile project, we’re always seeking feedback in order to make many small, continuous adjustments. But where does all this feedback come from?

In the previous chapter, we talked about working closely with users—getting good feedback from them and acting on it. In this chapter, we’ll talk primarily about getting feedback in other ways. As Bill Nye observes, tests of any sort are definitive; we’ll implement that idea to ensure that you always know the state of your project’s health and don’t have to guess.

Many projects get into trouble when the code base gets out of hand. Bug fixes beget more bugs, which beget more bug fixes, and the whole ...

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