Add testcase for %ghost %config behavior

- Further parametrize configtest.spec to allow for different attributes
- Verify pre-existing %ghost %config is preserved on install,
  that it survives upgrades and is usually left alone on erasure.
- NOTE: The erasure behavior differs from rpm >= 4.11.0.1 in the
  strange corner-case of on-disk file content matching the non-packaged
  %ghost from build-time. Newer rpm never erases %ghost %config,
  but rpm 4.10.x preserves the exact legacy behavior of removing
  such "non-modified" ghost on erasure. The newer behavior is far
  less quirky but backporting it would require too many changes
  for a release like this.

2 files changed, 54 insertions, 1 deletions

diff --git a/tests/data/SPECS/configtest.spec b/tests/data/SPECS/configtest.spec
index 5ea7cae72..9bf7ba291 100644
--- a/tests/data/SPECS/configtest.spec
+++ b/tests/data/SPECS/configtest.spec
@@ -20,4 +20,4 @@ rm -rf $RPM_BUILD_ROOT
 
 %files
 %defattr(-,root,root,-)
-%config %{_sysconfdir}/my.conf
+%{?fileattr} %config %{_sysconfdir}/my.conf
diff --git a/tests/rpmconfig.at b/tests/rpmconfig.at
index e84afb2d5..c889739ef 100644
--- a/tests/rpmconfig.at
+++ b/tests/rpmconfig.at
@@ -101,3 +101,56 @@ runroot rpm -U "${TOPDIR}"/RPMS/noarch/configtest-2.0-1.noarch.rpm
 [warning: /etc/my.conf saved as /etc/my.conf.rpmsave]
 )
 AT_CLEANUP
+
+---------
+# Test pre-existing and post-install config ghost survival and erasure
+AT_SETUP([install/upgrade/erase ghost config])
+AT_KEYWORDS([install])
+AT_CHECK([
+RPMDB_CLEAR
+RPMDB_INIT
+cf="${RPMTEST}"/etc/my.conf
+rm -rf "${cf}" "${cf}".rpm*
+rm -rf "${TOPDIR}"
+
+for v in 1.0 2.0; do
+    runroot rpmbuild --quiet -bb \
+        --define "ver ${v}" \
+        --define "filetype file" \
+        --define "filedata buster" \
+        --define "fileattr %ghost" \
+          /data/SPECS/configtest.spec
+done
+
+# pre-existing config, install, erase
+test ! -f "${cf}" && echo OK1
+echo "keaton" > "${cf}"
+cat "${cf}"
+runroot rpm -U "${TOPDIR}"/RPMS/noarch/configtest-1.0-1.noarch.rpm
+cat "${cf}"
+runroot rpm -e configtest
+cat "${cf}"
+rm -f "${cf}"
+
+# post-install config, upgrade, erase
+runroot rpm -U "${TOPDIR}"/RPMS/noarch/configtest-1.0-1.noarch.rpm
+test ! -f "${cf}" && echo OK2
+echo "buster" > "${cf}"
+cat "${cf}"
+runroot rpm -U "${TOPDIR}"/RPMS/noarch/configtest-2.0-1.noarch.rpm
+cat "${cf}"
+runroot rpm -e configtest
+test ! -f "${cf}" && echo OK2
+],
+[],
+[OK1
+keaton
+keaton
+keaton
+OK2
+buster
+buster
+OK2
+],
+[])
+AT_CLEANUP