Very good question. Such a thing would be of great value as IMO our current test cases are far from sufficient. This post shows the ODEs that are routinely used in development and you can see it’s a short list. There’s a plan to expand it systematically, but first we’ll need to tie some loose ends, such as ODE testing cleanup · Issue #2395 · stan-dev/math · GitHub. Help wanted!
yizhang
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