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radar blip
radar blip

Component visual regression testing

Published : Oct 26, 2022
This blip is not on the current edition of the Radar. If it was on one of the last few editions, it is likely that it is still relevant. If the blip is older, it might no longer be relevant and our assessment might be different today. Unfortunately, we simply don't have the bandwidth to continuously review blips from previous editions of the Radar. Understand more
Oct 2022
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Visual regression testing is a useful and powerful tool to have in your toolbox, but it has a significant cost given it's done for the entire page. With the rise of component-based frameworks such as React and Vue, we've also seen the rise of component visual regression testing. This technique strikes a good balance between value and cost to ensure that no undesired visuals have been added to the application. In our experience, component visual regression testing presents fewer false positives and promotes a good architectural style. By using it with tools such as Vite and the webpack feature Hot Module Replacement (HMR), it could be seen as a paradigm shift for applying test-driven development to front-end development.

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