Unit testing calibration production is not always successful in finding issues, as the process is cumulative: products are built using previously built products. In addition, the data and processing time requirements for full testing are larger than a set of unit tests can handle.
DM-23302 will add a LATISS based ci suite to the lsst-dm github organization. This includes a top level `ci_cpp` package, `ci_cpp_gen2` and `ci_cpp_gen3` packages for the different butler/processing methods, and a `testdata_latiss_cpp` package to hold the input data.
I don't believe this needs to be regularly run, but it should be at least very highly recommended that any changes to `cp_pipe` and `ip_isr` be run through the suite prior to merging.