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Unlocking Efficiency with Snapshot Testing A Journey to Better Code Quality Episode

Unlocking Efficiency with Snapshot Testing A Journey to Better Code Quality

· 01:29

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Welcome to today's episode, where we dive into the world of snapshot testing, a powerful tool for enhancing your coding workflow. Our host reflects on how they've realized they haven't been using snapshot tests to their full potential. As they say, "If I need to test something, I write a property/fuzz/randomized test. If I can’t fuzz, I write a snapshot test."

Snapshot testing simplifies the debugging process by converting test outcomes into a textual format that can be easily compared to expected values. The unique feature? You can automatically update these expected values right in your source code.

Our host shares a personal experience while writing a function to convert permutations into indices. They started with basic assert tests but quickly found themselves frustrated by context switching during debugging. "Too many context switches!" they exclaimed.

By switching to snapshot testing, they could document errors directly within their test code, keeping all failures visible and accessible. As they put it, snapshot tests "accelerate your development speed" and create a "repeatable REPL."

As a bonus, they touch on the importance of example-based tests, especially for catching subtle errors that fuzz tests might miss. So, if you want to improve your testing workflow, consider embracing snapshot testing and unlock a new level of efficiency in your coding journey!
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