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d911d1465d
Teach git-rebase -i a new option --root, which instructs it to rebase
the entire history leading up to <branch>. This is mainly for
symmetry with ordinary git-rebase; it cannot be used to edit the root
commit in-place (it requires --onto <newbase>). Commits that already
exist in <newbase> are skipped.
In the normal mode of operation, this is fairly straightforward. We
run cherry-pick in a loop, and cherry-pick has supported picking the
root commit since f95ebf7 (Allow cherry-picking root commits,
2008-07-04).
In --preserve-merges mode, we track the mapping from old to rewritten
commits and use it to update the parent list of each commit. In this
case, we define 'rebase -i -p --root --onto $onto $branch' to rewrite
the parent list of all root commit(s) on $branch to contain $onto
instead.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
188 lines
4.2 KiB
Bash
Executable file
188 lines
4.2 KiB
Bash
Executable file
#!/bin/sh
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test_description='git rebase --root
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Tests if git rebase --root --onto <newparent> can rebase the root commit.
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'
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. ./test-lib.sh
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test_expect_success 'prepare repository' '
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echo 1 > A &&
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git add A &&
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git commit -m 1 &&
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echo 2 > A &&
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git add A &&
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git commit -m 2 &&
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git symbolic-ref HEAD refs/heads/other &&
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rm .git/index &&
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echo 3 > B &&
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git add B &&
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git commit -m 3 &&
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echo 1 > A &&
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git add A &&
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git commit -m 1b &&
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echo 4 > B &&
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git add B &&
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git commit -m 4
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'
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test_expect_success 'rebase --root expects --onto' '
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test_must_fail git rebase --root
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'
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test_expect_success 'setup pre-rebase hook' '
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mkdir -p .git/hooks &&
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cat >.git/hooks/pre-rebase <<EOF &&
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#!$SHELL_PATH
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echo "\$1,\$2" >.git/PRE-REBASE-INPUT
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EOF
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chmod +x .git/hooks/pre-rebase
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'
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cat > expect <<EOF
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4
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3
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2
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1
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EOF
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test_expect_success 'rebase --root --onto <newbase>' '
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git checkout -b work &&
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git rebase --root --onto master &&
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git log --pretty=tformat:"%s" > rebased &&
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test_cmp expect rebased
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'
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test_expect_success 'pre-rebase got correct input (1)' '
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test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,
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'
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test_expect_success 'rebase --root --onto <newbase> <branch>' '
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git branch work2 other &&
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git rebase --root --onto master work2 &&
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git log --pretty=tformat:"%s" > rebased2 &&
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test_cmp expect rebased2
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'
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test_expect_success 'pre-rebase got correct input (2)' '
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test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,work2
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'
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test_expect_success 'rebase -i --root --onto <newbase>' '
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git checkout -b work3 other &&
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GIT_EDITOR=: git rebase -i --root --onto master &&
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git log --pretty=tformat:"%s" > rebased3 &&
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test_cmp expect rebased3
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'
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test_expect_success 'pre-rebase got correct input (3)' '
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test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,
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'
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test_expect_success 'rebase -i --root --onto <newbase> <branch>' '
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git branch work4 other &&
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GIT_EDITOR=: git rebase -i --root --onto master work4 &&
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git log --pretty=tformat:"%s" > rebased4 &&
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test_cmp expect rebased4
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'
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test_expect_success 'pre-rebase got correct input (4)' '
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test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,work4
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'
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test_expect_success 'rebase -i -p with linear history' '
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git checkout -b work5 other &&
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GIT_EDITOR=: git rebase -i -p --root --onto master &&
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git log --pretty=tformat:"%s" > rebased5 &&
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test_cmp expect rebased5
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'
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test_expect_success 'pre-rebase got correct input (5)' '
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test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,
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'
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test_expect_success 'set up merge history' '
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git checkout other^ &&
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git checkout -b side &&
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echo 5 > C &&
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git add C &&
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git commit -m 5 &&
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git checkout other &&
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git merge side
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'
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sed 's/#/ /g' > expect-side <<'EOF'
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* Merge branch 'side' into other
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|\##
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| * 5
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* | 4
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|/##
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* 3
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* 2
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* 1
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EOF
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test_expect_success 'rebase -i -p with merge' '
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git checkout -b work6 other &&
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GIT_EDITOR=: git rebase -i -p --root --onto master &&
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git log --graph --topo-order --pretty=tformat:"%s" > rebased6 &&
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test_cmp expect-side rebased6
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'
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test_expect_success 'set up second root and merge' '
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git symbolic-ref HEAD refs/heads/third &&
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rm .git/index &&
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rm A B C &&
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echo 6 > D &&
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git add D &&
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git commit -m 6 &&
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git checkout other &&
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git merge third
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'
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sed 's/#/ /g' > expect-third <<'EOF'
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* Merge branch 'third' into other
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|\##
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| * 6
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* | Merge branch 'side' into other
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|\ \##
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| * | 5
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* | | 4
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|/ /##
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* | 3
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|/##
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* 2
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* 1
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EOF
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test_expect_success 'rebase -i -p with two roots' '
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git checkout -b work7 other &&
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GIT_EDITOR=: git rebase -i -p --root --onto master &&
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git log --graph --topo-order --pretty=tformat:"%s" > rebased7 &&
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test_cmp expect-third rebased7
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'
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test_expect_success 'setup pre-rebase hook that fails' '
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mkdir -p .git/hooks &&
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cat >.git/hooks/pre-rebase <<EOF &&
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#!$SHELL_PATH
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false
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EOF
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chmod +x .git/hooks/pre-rebase
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'
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test_expect_success 'pre-rebase hook stops rebase' '
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git checkout -b stops1 other &&
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GIT_EDITOR=: test_must_fail git rebase --root --onto master &&
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test "z$(git symbolic-ref HEAD)" = zrefs/heads/stops1
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test 0 = $(git rev-list other...stops1 | wc -l)
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'
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test_expect_success 'pre-rebase hook stops rebase -i' '
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git checkout -b stops2 other &&
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GIT_EDITOR=: test_must_fail git rebase --root --onto master &&
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test "z$(git symbolic-ref HEAD)" = zrefs/heads/stops2
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test 0 = $(git rev-list other...stops2 | wc -l)
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'
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test_done
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