Facebook does this with a project called Huxley[1]. It seems cool, but these sorts of tools have always suffered from the problem of brittle tests, so it is not a silver bullet. It does seem that it would work well, however, in systems that require stringent oversight around UI changes (like facebook). Places where "if a piece of UI changes by a pixel, we want to know about it and OK the change" is the standard (most apps do not fall into this category though).
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Facebook does this with a project called Huxley[1]. It seems cool, but these sorts of tools have always suffered from the problem of brittle tests, so it is not a silver bullet. It does seem that it would work well, however, in systems that require stringent oversight around UI changes (like facebook). Places where "if a piece of UI changes by a pixel, we want to know about it and OK the change" is the standard (most apps do not fall into this category though).
[1] https://github.com/facebook/huxley