git/t/t3409-rebase-preserve-merges.sh
Johannes Schindelin 11aad46432 tests: optionally skip git rebase -p tests
The `--preserve-merges` mode of the `rebase` command is slated to be
deprecated soon, as the more powerful `--rebase-merges` mode is
available now, and the latter was designed with the express intent to
address the shortcomings of `--preserve-merges`' design (e.g. the
inability to reorder commits in an interactive rebase).

As such, we will eventually even remove the `--preserve-merges` support,
and along with it, its tests.

In preparation for this, and also to allow the Windows phase of our
automated tests to save some well-needed time when running the test
suite, this commit introduces a new prerequisite REBASE_P, which can be
forced to being unmet by setting the environment variable
`GIT_TEST_SKIP_REBASE_P` to any non-empty string.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-02 11:27:30 +09:00

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#!/bin/sh
#
# Copyright(C) 2008 Stephen Habermann & Andreas Ericsson
#
test_description='git rebase -p should preserve merges
Run "git rebase -p" and check that merges are properly carried along
'
. ./test-lib.sh
if ! test_have_prereq REBASE_P; then
skip_all='skipping git rebase -p tests, as asked for'
test_done
fi
GIT_AUTHOR_EMAIL=bogus_email_address
export GIT_AUTHOR_EMAIL
# Clone 2 (conflicting merge):
#
# A1--A2--B3 <-- origin/master
# \ \
# B1------M <-- topic
# \
# B2 <-- origin/topic
#
# Clone 3 (no-ff merge):
#
# A1--A2--B3 <-- origin/master
# \
# B1------M <-- topic
# \ /
# \--A3 <-- topic2
# \
# B2 <-- origin/topic
#
# Clone 4 (same as Clone 3)
test_expect_success 'setup for merge-preserving rebase' \
'echo First > A &&
git add A &&
git commit -m "Add A1" &&
git checkout -b topic &&
echo Second > B &&
git add B &&
git commit -m "Add B1" &&
git checkout -f master &&
echo Third >> A &&
git commit -a -m "Modify A2" &&
echo Fifth > B &&
git add B &&
git commit -m "Add different B" &&
git clone ./. clone2 &&
(
cd clone2 &&
git checkout -b topic origin/topic &&
test_must_fail git merge origin/master &&
echo Resolved >B &&
git add B &&
git commit -m "Merge origin/master into topic"
) &&
git clone ./. clone3 &&
(
cd clone3 &&
git checkout -b topic2 origin/topic &&
echo Sixth > A &&
git commit -a -m "Modify A3" &&
git checkout -b topic origin/topic &&
git merge --no-ff topic2
) &&
git clone ./. clone4 &&
(
cd clone4 &&
git checkout -b topic2 origin/topic &&
echo Sixth > A &&
git commit -a -m "Modify A3" &&
git checkout -b topic origin/topic &&
git merge --no-ff topic2
) &&
git checkout topic &&
echo Fourth >> B &&
git commit -a -m "Modify B2"
'
test_expect_success '--continue works after a conflict' '
(
cd clone2 &&
git fetch &&
test_must_fail git rebase -p origin/topic &&
test 2 = $(git ls-files B | wc -l) &&
echo Resolved again > B &&
test_must_fail git rebase --continue &&
grep "^@@@ " .git/rebase-merge/patch &&
git add B &&
git rebase --continue &&
test 1 = $(git rev-list --all --pretty=oneline | grep "Modify A" | wc -l) &&
test 1 = $(git rev-list --all --pretty=oneline | grep "Add different" | wc -l) &&
test 1 = $(git rev-list --all --pretty=oneline | grep "Merge origin" | wc -l)
)
'
test_expect_success 'rebase -p preserves no-ff merges' '
(
cd clone3 &&
git fetch &&
git rebase -p origin/topic &&
test 3 = $(git rev-list --all --pretty=oneline | grep "Modify A" | wc -l) &&
test 1 = $(git rev-list --all --pretty=oneline | grep "Merge branch" | wc -l)
)
'
test_expect_success 'rebase -p ignores merge.log config' '
(
cd clone4 &&
git fetch &&
git -c merge.log=1 rebase -p origin/topic &&
echo >expected &&
git log --format="%b" -1 >current &&
test_cmp expected current
)
'
test_done