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React Interview Guide
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We are now going to learn how to manage the data in our applications. This is also known as data fetching and mocking, which are two important concepts to grasp. When doing testing in this area, it is necessary to have a working knowledge of how data-fetching APIs operate and how to mimic their data. This knowledge is necessary for several reasons, including development efficiency, independent testing, integration and interaction with external systems, and cost and rate limiting.
In the case of developer efficiency, developers can separate portions of the application for testing and development by mocking API replies. This means that even if the backend portion of a feature is not yet completed, a frontend developer can still work on it by simulating an API response. As for independent testing, programmers can confirm that their tests are not impacted by the status or behavior of other systems by mimicking the data given by APIs, producing more...