It appears the .asd file thinks the package the tests are in is "CL-CSV/TEST", but the actually tests in tests/csv.lisp think it's "CL-CSV-TEST". Unsurprisingly, this is problematic when trying to get ASDF to run them.
That said, bypassing ASDF and just doing (cl-csv-test::run-all-tests) appears to get the job done, albeit one of the tests currently appears to fail.
It appears the .asd file thinks the package the tests are in is "CL-CSV/TEST", but the actually tests in tests/csv.lisp think it's "CL-CSV-TEST". Unsurprisingly, this is problematic when trying to get ASDF to run them.
That said, bypassing ASDF and just doing (cl-csv-test::run-all-tests) appears to get the job done, albeit one of the tests currently appears to fail.