git-commit-vandalism/t/t5411/common-functions.sh
Jiang Xin 12d6991cf4 test: refactor to use "get_abbrev_oid" to get abbrev oid
Add new function "get_abbrev_oid" to get abbrev object ID.  This
function has a default value which helps to prepare a nonempty replace
pattern for sed command.  An empty replace pattern may cause sed fail
to allocate memory.

Refactor function "make_user_friendly_and_stable_output" to use
"get_abbrev_oid" to get abbrev object ID.

Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-06-17 14:12:24 +09:00

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# Create commits in <repo> and assign each commit's oid to shell variables
# given in the arguments (A, B, and C). E.g.:
#
# create_commits_in <repo> A B C
#
# NOTE: Never calling this function from a subshell since variable
# assignments will disappear when subshell exits.
create_commits_in () {
repo="$1" && test -d "$repo" ||
error "Repository $repo does not exist."
shift &&
while test $# -gt 0
do
name=$1 &&
shift &&
test_commit -C "$repo" --no-tag "$name" &&
eval $name=$(git -C "$repo" rev-parse HEAD)
done
}
get_abbrev_oid () {
oid=$1 &&
suffix=${oid#???????} &&
oid=${oid%$suffix} &&
if test -n "$oid"
then
echo "$oid"
else
echo "undefined-oid"
fi
}
# Format the output of git-push, git-show-ref and other commands to make a
# user-friendly and stable text. We can easily prepare the expect text
# without having to worry about changes of the commit ID (full or abbrev.)
# of the output. Single quotes are replaced with double quotes, because
# it is boring to prepare unquoted single quotes in expect text. We also
# remove some locale error messages. The emitted human-readable errors are
# redundant to the more machine-readable output the tests already assert.
make_user_friendly_and_stable_output () {
sed \
-e "s/'/\"/g" \
-e "s/$(get_abbrev_oid $A)[0-9a-f]*/<COMMIT-A>/g" \
-e "s/$(get_abbrev_oid $B)[0-9a-f]*/<COMMIT-B>/g" \
-e "s/$(get_abbrev_oid $TAG)[0-9a-f]*/<TAG-v123>/g" \
-e "s/$ZERO_OID/<ZERO-OID>/g" \
-e "s#To $URL_PREFIX/upstream.git#To <URL/of/upstream.git>#" \
-e "/^error: / d"
}
filter_out_user_friendly_and_stable_output () {
make_user_friendly_and_stable_output |
sed -n ${1+"$@"}
}
format_and_save_expect () {
sed -e 's/^> //' -e 's/Z$//' >expect
}
test_cmp_refs () {
indir=
if test "$1" = "-C"
then
shift
indir="$1"
shift
fi
indir=${indir:+"$indir"/}
cat >show-ref.expect &&
git ${indir:+ -C "$indir"} show-ref >show-ref.pristine &&
make_user_friendly_and_stable_output <show-ref.pristine >show-ref.filtered &&
test_cmp show-ref.expect show-ref.filtered
}