kunit_tool prints an error message when there are missing or wrong entries in the kunitconfig file.
Currently, this message is 'Error:root:Kconfig is not contained in validated .config!' which doesn't describe the issue particularly well.
We should consider improving the message, and possibly adding a list of the invalid entries.
Some of this was done in the old kunit/alpha/master branch in:
This fix was accepted a while ago: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git/commit/?h=kunit&id=dde54b9492a8ba46bcd7e7e26172adf2bfcea817
David, can you close this?