Graph or plot test coverage over time?
In reading our Sponsor S quarterly report draft, I found a section about how our unit test coverage is up to 37%, and our stem+chutney test coverage is up to 62%.
Great. What were they before, and what is their rate of change?
Is this the sort of thing where we have the numbers somewhere? Is it easy to automate over time?
Ideally we should even arrange things so the graphs can help us in some way too -- first by e.g. giving somebody a sense of satisfaction when a big branch gets merged and the coverage line shoots up a lot, but then next by helping us notice when some other big branch gets merged that suddenly undermines coverage in a way we didn't expect? Let's not do this to satisfy a funder -- let's figure out a way where tracking and visualizing our progress helps us make progress better.