git-commit-vandalism/t/t3409-rebase-preserve-merges.sh

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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
'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
tests: mark tests relying on the current default for `init.defaultBranch` In addition to the manual adjustment to let the `linux-gcc` CI job run the test suite with `master` and then with `main`, this patch makes sure that GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME is set in all test scripts that currently rely on the initial branch name being `master by default. To determine which test scripts to mark up, the first step was to force-set the default branch name to `master` in - all test scripts that contain the keyword `master`, - t4211, which expects `t/t4211/history.export` with a hard-coded ref to initialize the default branch, - t5560 because it sources `t/t556x_common` which uses `master`, - t8002 and t8012 because both source `t/annotate-tests.sh` which also uses `master`) This trick was performed by this command: $ sed -i '/^ *\. \.\/\(test-lib\|lib-\(bash\|cvs\|git-svn\)\|gitweb-lib\)\.sh$/i\ GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master\ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME\ ' $(git grep -l master t/t[0-9]*.sh) \ t/t4211*.sh t/t5560*.sh t/t8002*.sh t/t8012*.sh After that, careful, manual inspection revealed that some of the test scripts containing the needle `master` do not actually rely on a specific default branch name: either they mention `master` only in a comment, or they initialize that branch specificially, or they do not actually refer to the current default branch. Therefore, the aforementioned modification was undone in those test scripts thusly: $ git checkout HEAD -- \ t/t0027-auto-crlf.sh t/t0060-path-utils.sh \ t/t1011-read-tree-sparse-checkout.sh \ t/t1305-config-include.sh t/t1309-early-config.sh \ t/t1402-check-ref-format.sh t/t1450-fsck.sh \ t/t2024-checkout-dwim.sh \ t/t2106-update-index-assume-unchanged.sh \ t/t3040-subprojects-basic.sh t/t3301-notes.sh \ t/t3308-notes-merge.sh t/t3423-rebase-reword.sh \ t/t3436-rebase-more-options.sh \ t/t4015-diff-whitespace.sh t/t4257-am-interactive.sh \ t/t5323-pack-redundant.sh t/t5401-update-hooks.sh \ t/t5511-refspec.sh t/t5526-fetch-submodules.sh \ t/t5529-push-errors.sh t/t5530-upload-pack-error.sh \ t/t5548-push-porcelain.sh \ t/t5552-skipping-fetch-negotiator.sh \ t/t5572-pull-submodule.sh t/t5608-clone-2gb.sh \ t/t5614-clone-submodules-shallow.sh \ t/t7508-status.sh t/t7606-merge-custom.sh \ t/t9302-fast-import-unpack-limit.sh We excluded one set of test scripts in these commands, though: the range of `git p4` tests. The reason? `git p4` stores the (foreign) remote branch in the branch called `p4/master`, which is obviously not the default branch. Manual analysis revealed that only five of these tests actually require a specific default branch name to pass; They were modified thusly: $ sed -i '/^ *\. \.\/lib-git-p4\.sh$/i\ GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master\ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME\ ' t/t980[0167]*.sh t/t9811*.sh Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-11-19 00:44:19 +01:00
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./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/main
# \ \
# B1------M <-- topic
# \
# B2 <-- origin/topic
#
# Clone 3 (no-ff merge):
#
# A1--A2--B3 <-- origin/main
# \
# 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 main &&
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/main &&
echo Resolved >B &&
git add B &&
git commit -m "Merge origin/main 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