git/t/lib-rebase.sh
Johannes Schindelin 5dcdd7409a t/lib-rebase: prepare for testing git rebase --rebase-merges
The format of the todo list is quite a bit different in the
`--rebase-merges` mode; Let's prepare the fake editor to handle those
todo lists properly, too.

The original idea was that we keep the original command unless
overridden, and because the original todo lists only had `pick` lines
anyway, we could be sloppy and "override" the command by the same
command (i.e. use the sed replacement pattern "pick" instead of "&").

This actually would not have worked with `fixup` and `squash` commands,
but it would appear that we never tried to use the fake editor with
`--autosquash`.

However, in the next commit we want to use the fake editor in
conjunction with `--rebase-merges`, so let's use the correct sed
replacement pattern.

Technically, it is not necessary to take care of the `fakesha` thing
(where we reuse the sed replacement pattern to craft a new todo
command), at least for now, as the only user of that thing overrides the
`action` anyway. Nevertheless, for completeness' sake, we do take care
of it.

Helped-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-07-31 12:24:07 -07:00

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# Helper functions used by interactive rebase tests.
# After setting the fake editor with this function, you can
#
# - override the commit message with $FAKE_COMMIT_MESSAGE
# - amend the commit message with $FAKE_COMMIT_AMEND
# - check that non-commit messages have a certain line count with $EXPECT_COUNT
# - check the commit count in the commit message header with $EXPECT_HEADER_COUNT
# - rewrite a rebase -i script as directed by $FAKE_LINES.
# $FAKE_LINES consists of a sequence of words separated by spaces.
# The following word combinations are possible:
#
# "<lineno>" -- add a "pick" line with the SHA1 taken from the
# specified line.
#
# "<cmd> <lineno>" -- add a line with the specified command
# ("pick", "squash", "fixup", "edit", "reword" or "drop") and the
# SHA1 taken from the specified line.
#
# "exec_cmd_with_args" -- add an "exec cmd with args" line.
#
# "#" -- Add a comment line.
#
# ">" -- Add a blank line.
set_fake_editor () {
write_script fake-editor.sh <<-\EOF
case "$1" in
*/COMMIT_EDITMSG)
test -z "$EXPECT_HEADER_COUNT" ||
test "$EXPECT_HEADER_COUNT" = "$(sed -n '1s/^# This is a combination of \(.*\) commits\./\1/p' < "$1")" ||
test "# # GETTEXT POISON #" = "$(sed -n '1p' < "$1")" ||
exit
test -z "$FAKE_COMMIT_MESSAGE" || echo "$FAKE_COMMIT_MESSAGE" > "$1"
test -z "$FAKE_COMMIT_AMEND" || echo "$FAKE_COMMIT_AMEND" >> "$1"
exit
;;
esac
test -z "$EXPECT_COUNT" ||
test "$EXPECT_COUNT" = $(sed -e '/^#/d' -e '/^$/d' < "$1" | wc -l) ||
exit
test -z "$FAKE_LINES" && exit
grep -v '^#' < "$1" > "$1".tmp
rm -f "$1"
echo 'rebase -i script before editing:'
cat "$1".tmp
action=\&
for line in $FAKE_LINES; do
case $line in
pick|p|squash|s|fixup|f|edit|e|reword|r|drop|d|label|l|reset|r|merge|m)
action="$line";;
exec_*|x_*|break|b)
echo "$line" | sed 's/_/ /g' >> "$1";;
"#")
echo '# comment' >> "$1";;
">")
echo >> "$1";;
bad)
action="badcmd";;
fakesha)
test \& != "$action" || action=pick
echo "$action XXXXXXX False commit" >> "$1"
action=pick;;
*)
sed -n "${line}s/^[a-z][a-z]*/$action/p" < "$1".tmp >> "$1"
action=\&;;
esac
done
echo 'rebase -i script after editing:'
cat "$1"
EOF
test_set_editor "$(pwd)/fake-editor.sh"
}
# After set_cat_todo_editor, rebase -i will write the todo list (ignoring
# blank lines and comments) to stdout, and exit failure (so you should run
# it with test_must_fail). This can be used to verify the expected user
# experience, for todo list changes that do not affect the outcome of
# rebase; or as an extra check in addition to checking the outcome.
set_cat_todo_editor () {
write_script fake-editor.sh <<-\EOF
grep "^[^#]" "$1"
exit 1
EOF
test_set_editor "$(pwd)/fake-editor.sh"
}
# checks that the revisions in "$2" represent a linear range with the
# subjects in "$1"
test_linear_range () {
revlist_merges=$(git rev-list --merges "$2") &&
test -z "$revlist_merges" &&
expected=$1
set -- $(git log --reverse --format=%s "$2")
test "$expected" = "$*"
}
reset_rebase () {
test_might_fail git rebase --abort &&
git reset --hard &&
git clean -f
}
cherry_pick () {
git cherry-pick -n "$2" &&
git commit -m "$1" &&
git tag "$1"
}
revert () {
git revert -n "$2" &&
git commit -m "$1" &&
git tag "$1"
}
make_empty () {
git commit --allow-empty -m "$1" &&
git tag "$1"
}