I use standard-test-source to be able to run integration tests that are maintained upstream in dist-git downstream tests.

When doing this, the unpacked source lands in the testbed in /var/str/source/. The /var/str prefix is defined in str-common-init/defaults/main.yml.

It would be good to have an environment variable that points to the directory of the unpacked source tree, or at least to /var/str/, just in case that directory ever changes (it might because of e. g. SELinux restrictions).