Check out a free preview of the full Testing JavaScript Applications (feat. React and Redux) course:
The "Code Coverage Reporting" Lesson is part of the full, Testing JavaScript Applications (feat. React and Redux) course featured in this preview video. Here's what you'd learn in this lesson:

Kent introduces the concept of code coverage, a measure used to describe the degree to which the source code of a program is tested by a particular test suite. He shows how to generate code coverage reports within Jest and then use those reports as a way to stop code from being deployed if they coverage drops below a certain percentage.

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