I thought about this for a while, but I thought that someone else might come up with a better answer, because mine is rather unsatisfactory: no, I donβt know any such unit testing system.
I find it best to try and reorganize your C module so that its dependencies on the httpd code base are contained in a very thin layer of glue. I would not worry too much about APR dependencies, which could easily be related to your unit test code. This is similar to using a query record, which you should try to abstract a bit.
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