Master Issue to track work on CI

Question

• [x] run our unit tests on Sauce Labs via CircleCI: #625
• [x] collect screenshots of our visual tests: #636
• [x] collect visual diffs of those screenshots against the last build run: #645

该提问来源于开源项目：mathquill/mathquill

Answer 1

so the next steps I'm imagining would all be towards the goal of posting something useful as a GitHub comment, which I think will make an outsize difference in the utility of this awesome CI screenshot work.

Ideas: - can we crop the diffs to be just the areas that are different, with a little bit of padding? - obviously, stabilizing them so that spurious diffs are avoided would be nice - is the current measure of difference just the number of pixels different? Any way to also account for how actually different the pixels are (so that e.g. gray and slightly darker gray count for only a little) - can we reduce the screen width to 6.5 CSS inches (624 pixels) so that more of 'em could fit side-by-side?