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Published : Nov 20, 2019
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
Nov 2019
Trial ? Worth pursuing. It is important to understand how to build up this capability. Enterprises should try this technology on a project that can handle the risk.

Loki is a visual regression tool that works with Storybook, which we mentioned previously in the context of UI dev environments. With a few lines of configuration, Loki can be used to test all UI components. The preferred mode of operation is using Chrome in a Docker container as this avoids one-pixel differences when tests are run in nonidentical environments. Our experience has been that the tests are very stable, but updates to Storybook tend to cause tests to fail with minor differences. It also seems impossible to test components which use position: fixed but you can work around that by wrapping the component with a fixed.

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