git-commit-vandalism/t/t3404-rebase-interactive.sh
Johannes Schindelin 1d25c8cf82 rebase -i: fix squashing corner case
When squashing, rebase -i did not prevent fast forwards.  This could
happen when picking some other commit than the first one, and then
squashing the first commit.  So do not allow fast forwards when
squashing.

Noticed by Johannes Sixt.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-23 02:34:19 -07:00

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#!/bin/sh
#
# Copyright (c) 2007 Johannes E. Schindelin
#
test_description='git rebase interactive
This test runs git rebase "interactively", by faking an edit, and verifies
that the result still makes sense.
'
. ./test-lib.sh
# set up two branches like this:
#
# A - B - C - D - E
# \
# F - G - H
# \
# I
#
# where B, D and G touch the same file.
test_expect_success 'setup' '
: > file1 &&
git add file1 &&
test_tick &&
git commit -m A &&
git tag A &&
echo 1 > file1 &&
test_tick &&
git commit -m B file1 &&
: > file2 &&
git add file2 &&
test_tick &&
git commit -m C &&
echo 2 > file1 &&
test_tick &&
git commit -m D file1 &&
: > file3 &&
git add file3 &&
test_tick &&
git commit -m E &&
git checkout -b branch1 A &&
: > file4 &&
git add file4 &&
test_tick &&
git commit -m F &&
git tag F &&
echo 3 > file1 &&
test_tick &&
git commit -m G file1 &&
: > file5 &&
git add file5 &&
test_tick &&
git commit -m H &&
git checkout -b branch2 F &&
: > file6 &&
git add file6 &&
test_tick &&
git commit -m I &&
git tag I
'
cat > fake-editor.sh <<\EOF
#!/bin/sh
case "$1" in
*/COMMIT_EDITMSG)
test -z "$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"
cat "$1".tmp
action=pick
for line in $FAKE_LINES; do
case $line in
squash)
action="$line";;
*)
echo sed -n "${line}s/^pick/$action/p"
sed -n "${line}p" < "$1".tmp
sed -n "${line}s/^pick/$action/p" < "$1".tmp >> "$1"
action=pick;;
esac
done
EOF
chmod a+x fake-editor.sh
VISUAL="$(pwd)/fake-editor.sh"
export VISUAL
test_expect_success 'no changes are a nop' '
git rebase -i F &&
test $(git rev-parse I) = $(git rev-parse HEAD)
'
test_expect_success 'test the [branch] option' '
git checkout -b dead-end &&
git rm file6 &&
git commit -m "stop here" &&
git rebase -i F branch2 &&
test $(git rev-parse I) = $(git rev-parse HEAD)
'
test_expect_success 'rebase on top of a non-conflicting commit' '
git checkout branch1 &&
git tag original-branch1 &&
git rebase -i branch2 &&
test file6 = $(git diff --name-only original-branch1) &&
test $(git rev-parse I) = $(git rev-parse HEAD~2)
'
test_expect_success 'reflog for the branch shows state before rebase' '
test $(git rev-parse branch1@{1}) = $(git rev-parse original-branch1)
'
test_expect_success 'exchange two commits' '
FAKE_LINES="2 1" git rebase -i HEAD~2 &&
test H = $(git cat-file commit HEAD^ | tail -n 1) &&
test G = $(git cat-file commit HEAD | tail -n 1)
'
cat > expect << EOF
diff --git a/file1 b/file1
index e69de29..00750ed 100644
--- a/file1
+++ b/file1
@@ -0,0 +1 @@
+3
EOF
cat > expect2 << EOF
<<<<<<< HEAD:file1
2
=======
3
>>>>>>> b7ca976... G:file1
EOF
test_expect_success 'stop on conflicting pick' '
git tag new-branch1 &&
! git rebase -i master &&
diff -u expect .git/.dotest-merge/patch &&
diff -u expect2 file1 &&
test 4 = $(grep -v "^#" < .git/.dotest-merge/done | wc -l) &&
test 0 = $(grep -v "^#" < .git/.dotest-merge/todo | wc -l)
'
test_expect_success 'abort' '
git rebase --abort &&
test $(git rev-parse new-branch1) = $(git rev-parse HEAD) &&
! test -d .git/.dotest-merge
'
test_expect_success 'retain authorship' '
echo A > file7 &&
git add file7 &&
test_tick &&
GIT_AUTHOR_NAME="Twerp Snog" git commit -m "different author" &&
git tag twerp &&
git rebase -i --onto master HEAD^ &&
git show HEAD | grep "^Author: Twerp Snog"
'
test_expect_success 'squash' '
git reset --hard twerp &&
echo B > file7 &&
test_tick &&
GIT_AUTHOR_NAME="Nitfol" git commit -m "nitfol" file7 &&
echo "******************************" &&
FAKE_LINES="1 squash 2" git rebase -i --onto master HEAD~2 &&
test B = $(cat file7) &&
test $(git rev-parse HEAD^) = $(git rev-parse master)
'
test_expect_success 'retain authorship when squashing' '
git show HEAD | grep "^Author: Nitfol"
'
test_expect_success 'preserve merges with -p' '
git checkout -b to-be-preserved master^ &&
: > unrelated-file &&
git add unrelated-file &&
test_tick &&
git commit -m "unrelated" &&
git checkout -b to-be-rebased master &&
echo B > file1 &&
test_tick &&
git commit -m J file1 &&
test_tick &&
git merge to-be-preserved &&
echo C > file1 &&
test_tick &&
git commit -m K file1 &&
test_tick &&
git rebase -i -p --onto branch1 master &&
test $(git rev-parse HEAD^^2) = $(git rev-parse to-be-preserved) &&
test $(git rev-parse HEAD~3) = $(git rev-parse branch1) &&
test $(git show HEAD:file1) = C &&
test $(git show HEAD~2:file1) = B
'
test_expect_success '--continue tries to commit' '
test_tick &&
! git rebase -i --onto new-branch1 HEAD^ &&
echo resolved > file1 &&
git add file1 &&
FAKE_COMMIT_MESSAGE="chouette!" git rebase --continue &&
test $(git rev-parse HEAD^) = $(git rev-parse new-branch1) &&
git show HEAD | grep chouette
'
test_expect_success 'verbose flag is heeded, even after --continue' '
git reset --hard HEAD@{1} &&
test_tick &&
! git rebase -v -i --onto new-branch1 HEAD^ &&
echo resolved > file1 &&
git add file1 &&
git rebase --continue > output &&
grep "^ file1 | 2 +-$" output
'
test_expect_success 'multi-squash only fires up editor once' '
base=$(git rev-parse HEAD~4) &&
FAKE_COMMIT_AMEND="ONCE" FAKE_LINES="1 squash 2 squash 3 squash 4" \
git rebase -i $base &&
test $base = $(git rev-parse HEAD^) &&
test 1 = $(git show | grep ONCE | wc -l)
'
test_expect_success 'squash works as expected' '
for n in one two three four
do
echo $n >> file$n &&
git add file$n &&
git commit -m $n
done &&
one=$(git rev-parse HEAD~3) &&
FAKE_LINES="1 squash 3 2" git rebase -i HEAD~3 &&
test $one = $(git rev-parse HEAD~2)
'
test_expect_success 'interrupted squash works as expected' '
for n in one two three four
do
echo $n >> conflict &&
git add conflict &&
git commit -m $n
done &&
one=$(git rev-parse HEAD~3) &&
! FAKE_LINES="1 squash 3 2" git rebase -i HEAD~3 &&
(echo one; echo two; echo four) > conflict &&
git add conflict &&
! git rebase --continue &&
echo resolved > conflict &&
git add conflict &&
git rebase --continue &&
test $one = $(git rev-parse HEAD~2)
'
test_expect_success 'interrupted squash works as expected (case 2)' '
for n in one two three four
do
echo $n >> conflict &&
git add conflict &&
git commit -m $n
done &&
one=$(git rev-parse HEAD~3) &&
! FAKE_LINES="3 squash 1 2" git rebase -i HEAD~3 &&
(echo one; echo four) > conflict &&
git add conflict &&
! git rebase --continue &&
(echo one; echo two; echo four) > conflict &&
git add conflict &&
! git rebase --continue &&
echo resolved > conflict &&
git add conflict &&
git rebase --continue &&
test $one = $(git rev-parse HEAD~2)
'
test_expect_success 'ignore patch if in upstream' '
HEAD=$(git rev-parse HEAD) &&
git checkout -b has-cherry-picked HEAD^ &&
echo unrelated > file7 &&
git add file7 &&
test_tick &&
git commit -m "unrelated change" &&
git cherry-pick $HEAD &&
EXPECT_COUNT=1 git rebase -i $HEAD &&
test $HEAD = $(git rev-parse HEAD^)
'
test_done