git/t/t3416-rebase-onto-threedots.sh
Alex Henrie 9e5ebe9668 rebase: use correct base for --keep-base when a branch is given
--keep-base rebases onto the merge base of the given upstream and the
current HEAD regardless of whether a branch is given. This is contrary
to the documentation and to the option's intended purpose. Instead,
rebase onto the merge base of the given upstream and the given branch.

Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-04-21 09:35:45 -07:00

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#!/bin/sh
test_description='git rebase --onto A...B'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
. "$TEST_DIRECTORY/lib-rebase.sh"
# Rebase only the tip commit of "topic" on merge base between "main"
# and "topic". Cannot do this for "side" with "main" because there
# is no single merge base.
#
#
# F---G topic G'
# / /
# A---B---C---D---E main --> A---B---C---D---E
# \ \ /
# \ x
# \ / \
# H---I---J---K side
test_expect_success setup '
test_commit A &&
test_commit B &&
git branch side &&
test_commit C &&
git branch topic &&
git checkout side &&
test_commit H &&
git checkout main &&
test_tick &&
git merge H &&
git tag D &&
test_commit E &&
git checkout topic &&
test_commit F &&
test_commit G &&
git checkout side &&
test_tick &&
git merge C &&
git tag I &&
test_commit J &&
test_commit K
'
test_expect_success 'rebase --onto main...topic' '
git reset --hard &&
git checkout topic &&
git reset --hard G &&
git rebase --onto main...topic F &&
git rev-parse HEAD^1 >actual &&
git rev-parse C^0 >expect &&
test_cmp expect actual
'
test_expect_success 'rebase --onto main...' '
git reset --hard &&
git checkout topic &&
git reset --hard G &&
git rebase --onto main... F &&
git rev-parse HEAD^1 >actual &&
git rev-parse C^0 >expect &&
test_cmp expect actual
'
test_expect_success 'rebase --onto main...side' '
git reset --hard &&
git checkout side &&
git reset --hard K &&
test_must_fail git rebase --onto main...side J
'
test_expect_success 'rebase -i --onto main...topic' '
git reset --hard &&
git checkout topic &&
git reset --hard G &&
set_fake_editor &&
EXPECT_COUNT=1 git rebase -i --onto main...topic F &&
git rev-parse HEAD^1 >actual &&
git rev-parse C^0 >expect &&
test_cmp expect actual
'
test_expect_success 'rebase -i --onto main...' '
git reset --hard &&
git checkout topic &&
git reset --hard G &&
set_fake_editor &&
EXPECT_COUNT=1 git rebase -i --onto main... F &&
git rev-parse HEAD^1 >actual &&
git rev-parse C^0 >expect &&
test_cmp expect actual
'
test_expect_success 'rebase -i --onto main...side' '
git reset --hard &&
git checkout side &&
git reset --hard K &&
set_fake_editor &&
test_must_fail git rebase -i --onto main...side J
'
test_expect_success 'rebase --keep-base --onto incompatible' '
test_must_fail git rebase --keep-base --onto main...
'
test_expect_success 'rebase --keep-base --root incompatible' '
test_must_fail git rebase --keep-base --root
'
test_expect_success 'rebase --keep-base main from topic' '
git reset --hard &&
git checkout topic &&
git reset --hard G &&
git rebase --keep-base main &&
git rev-parse C >base.expect &&
git merge-base main HEAD >base.actual &&
test_cmp base.expect base.actual &&
git rev-parse HEAD~2 >actual &&
git rev-parse C^0 >expect &&
test_cmp expect actual
'
test_expect_success 'rebase --keep-base main topic from main' '
git checkout main &&
git branch -f topic G &&
git rebase --keep-base main topic &&
git rev-parse C >base.expect &&
git merge-base main HEAD >base.actual &&
test_cmp base.expect base.actual &&
git rev-parse HEAD~2 >actual &&
git rev-parse C^0 >expect &&
test_cmp expect actual
'
test_expect_success 'rebase --keep-base main from side' '
git reset --hard &&
git checkout side &&
git reset --hard K &&
test_must_fail git rebase --keep-base main
'
test_expect_success 'rebase -i --keep-base main from topic' '
git reset --hard &&
git checkout topic &&
git reset --hard G &&
set_fake_editor &&
EXPECT_COUNT=2 git rebase -i --keep-base main &&
git rev-parse C >base.expect &&
git merge-base main HEAD >base.actual &&
test_cmp base.expect base.actual &&
git rev-parse HEAD~2 >actual &&
git rev-parse C^0 >expect &&
test_cmp expect actual
'
test_expect_success 'rebase -i --keep-base main topic from main' '
git checkout main &&
git branch -f topic G &&
set_fake_editor &&
EXPECT_COUNT=2 git rebase -i --keep-base main topic &&
git rev-parse C >base.expect &&
git merge-base main HEAD >base.actual &&
test_cmp base.expect base.actual &&
git rev-parse HEAD~2 >actual &&
git rev-parse C^0 >expect &&
test_cmp expect actual
'
test_expect_success 'rebase -i --keep-base main from side' '
git reset --hard &&
git checkout side &&
git reset --hard K &&
set_fake_editor &&
test_must_fail git rebase -i --keep-base main
'
test_done