test-lib: remove check_var_migration

Remove the check_var_migration() migration helper. This was added back
in [1], [2] and [3] to warn users to migrate from e.g. the
"GIT_FSMONITOR_TEST" name to "GIT_TEST_FSMONITOR".

I daresay that having been warning about this since late 2018 (or
v2.20.0) was sufficient time to give everyone interested a heads-up
about moving to the new names.

I don't see the need for going through the "do this later" codepath
anticipated in [1], let's just remove this instead.

1. 4cb54d0aa8e (fsmonitor: update GIT_TEST_FSMONITOR support,
   2018-09-18)
2. 1f357b045b5 (read-cache: update TEST_GIT_INDEX_VERSION support,
   2018-09-18)
3. 5765d97b71d (preload-index: update GIT_FORCE_PRELOAD_TEST support,
   2018-09-18)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 76062db29640bd42ab17694a75271e9f9458f1f0..61bda88245c1ad55f220b8eaa0ea9b4c8837489a 100644 (file)
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -462,36 +462,6 @@ export GIT_DEFAULT_HASH
 GIT_TRACE_BARE=1
 export GIT_TRACE_BARE
 
-check_var_migration () {
-       # the warnings and hints given from this helper depends
-       # on end-user settings, which will disrupt the self-test
-       # done on the test framework itself.
-       case "$GIT_TEST_FRAMEWORK_SELFTEST" in
-       t)      return ;;
-       esac
-
-       old_name=$1 new_name=$2
-       eval "old_isset=\${${old_name}:+isset}"
-       eval "new_isset=\${${new_name}:+isset}"
-
-       case "$old_isset,$new_isset" in
-       isset,)
-               echo >&2 "warning: $old_name is now $new_name"
-               echo >&2 "hint: set $new_name too during the transition period"
-               eval "$new_name=\$$old_name"
-               ;;
-       isset,isset)
-               # do this later
-               # echo >&2 "warning: $old_name is now $new_name"
-               # echo >&2 "hint: remove $old_name"
-               ;;
-       esac
-}
-
-check_var_migration GIT_FSMONITOR_TEST GIT_TEST_FSMONITOR
-check_var_migration TEST_GIT_INDEX_VERSION GIT_TEST_INDEX_VERSION
-check_var_migration GIT_FORCE_PRELOAD_TEST GIT_TEST_PRELOAD_INDEX
-
 # Use specific version of the index file format
 if test -n "${GIT_TEST_INDEX_VERSION:+isset}"
 then