May 2019
Intermediate to advanced
496 pages
10h 38m
English
Content preview from Mastering React Test-Driven Development
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Snapshot testing
This is a React-specific type of testing that has a long history of recording the appearance of user interfaces. React component trees are serialized to disk as a JSON string and then compared between tests runs.
React component trees are useful in a couple of important scenarios, including the following:
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When your team has a low level of experience with TDD and general program design, and can become more confident with a safety net of snapshot testing
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When you have zero test coverage of software that is already being used in production, and you would like to quickly gain some level of confidence before making any changes
QA teams are sometimes interested in how software changes visually between releases, but they will ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.