Cache data, currently containing downloaded RPM packages from Koji, is
stored in XDG_CACHE_HOME. This patch allows user to delete cache before
or after the ABI comparison, or both.
* configure.ac: Require shutil module.
* doc/manuals/fedabipkgdiff.rst: Add document for new option
clean-cache, clean-cache-before, and clean-cache-after.
* tools/fedabipkgdiff (build_commandline_args_parser): Add new
option --clean-cache, --clean-cache-before and
--clean-cache-after.
(diff_local_rpm_with_latest_rpm_from_koji): Delete download
cache directory before or after downloading RPMs.
(diff_latest_rpms_based_on_distros): Likewise.
(diff_two_nvras_from_koji): Likewise.
(diff_from_two_rpm_files): Likewise.
* bash-completion/fedabipkgdiff: Add new options.
* tests/mockfedabipkgdiff.in (get_download_dir): Rewrite to
behave just like the original get_download_dir.
(mock_get_download_dir): Removed.
(DOWNLOAD_CACHE_DIR): New global variable pointing directory
holding packages during tests.
(run_fedabipkgdiff): Mock original get_download_dir with the
rewrite get_download_dir.
* tests/runtestfedabipkgdiff.py.in (run_fedabipkgdiff_tests):
Add --clean-cache to run tests to ensure no regression.
Signed-off-by: Chenxiong Qi <cqi@redhat.com>
