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Testing is very important in software development. Testing is a process to evaluate the functionality of a software application with an intent to find whether the developed software met the specified requirements or not. Jest is an open JavaScript testing library from Facebook. The only way to get comfortable with it is to spend some time doing it. To test with Jest the first thing you have to do is install it using npm or yarn. If you want to use yarn, pick your operating system and follow the instructions below.
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