tvl-depot/third_party/git/t/t3402-rebase-merge.sh
Vincent Ambo f4609b896f merge(3p/git): Merge git subtree at v2.29.2
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
2020-11-21 19:45:56 +01:00

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#!/bin/sh
#
# Copyright (c) 2006 Junio C Hamano
#
test_description='git rebase --merge test'
. ./test-lib.sh
T="A quick brown fox
jumps over the lazy dog."
for i in 1 2 3 4 5 6 7 8 9 10
do
echo "$i $T"
done >original
test_expect_success setup '
git add original &&
git commit -m"initial" &&
git branch side &&
echo "11 $T" >>original &&
git commit -a -m"master updates a bit." &&
echo "12 $T" >>original &&
git commit -a -m"master updates a bit more." &&
git checkout side &&
(echo "0 $T" && cat original) >renamed &&
git add renamed &&
git update-index --force-remove original &&
git commit -a -m"side renames and edits." &&
tr "[a-z]" "[A-Z]" <original >newfile &&
git add newfile &&
git commit -a -m"side edits further." &&
git branch second-side &&
tr "[a-m]" "[A-M]" <original >newfile &&
rm -f original &&
git commit -a -m"side edits once again." &&
git branch test-rebase side &&
git branch test-rebase-pick side &&
git branch test-reference-pick side &&
git branch test-conflicts side &&
git checkout -b test-merge side
'
test_expect_success 'reference merge' '
git merge -s recursive -m "reference merge" master
'
PRE_REBASE=$(git rev-parse test-rebase)
test_expect_success rebase '
git checkout test-rebase &&
GIT_TRACE=1 git rebase --merge master
'
test_expect_success 'test-rebase@{1} is pre rebase' '
test $PRE_REBASE = $(git rev-parse test-rebase@{1})
'
test_expect_success 'merge and rebase should match' '
git diff-tree -r test-rebase test-merge >difference &&
if test -s difference
then
cat difference
(exit 1)
else
echo happy
fi
'
test_expect_success 'rebase the other way' '
git reset --hard master &&
git rebase --merge side
'
test_expect_success 'rebase -Xtheirs' '
git checkout -b conflicting master~2 &&
echo "AB $T" >> original &&
git commit -mconflicting original &&
git rebase -Xtheirs master &&
grep AB original &&
! grep 11 original
'
test_expect_success 'rebase -Xtheirs from orphan' '
git checkout --orphan orphan-conflicting master~2 &&
echo "AB $T" >> original &&
git commit -morphan-conflicting original &&
git rebase -Xtheirs master &&
grep AB original &&
! grep 11 original
'
test_expect_success 'merge and rebase should match' '
git diff-tree -r test-rebase test-merge >difference &&
if test -s difference
then
cat difference
(exit 1)
else
echo happy
fi
'
test_expect_success 'picking rebase' '
git reset --hard side &&
git rebase --merge --onto master side^^ &&
mb=$(git merge-base master HEAD) &&
if test "$mb" = "$(git rev-parse master)"
then
echo happy
else
git show-branch
(exit 1)
fi &&
f=$(git diff-tree --name-only HEAD^ HEAD) &&
g=$(git diff-tree --name-only HEAD^^ HEAD^) &&
case "$f,$g" in
newfile,newfile)
echo happy ;;
*)
echo "$f"
echo "$g"
(exit 1)
esac
'
test_expect_success 'rebase -s funny -Xopt' '
test_when_finished "rm -fr test-bin funny.was.run" &&
mkdir test-bin &&
cat >test-bin/git-merge-funny <<-EOF &&
#!$SHELL_PATH
case "\$1" in --opt) ;; *) exit 2 ;; esac
shift &&
>funny.was.run &&
exec git merge-recursive "\$@"
EOF
chmod +x test-bin/git-merge-funny &&
git reset --hard &&
git checkout -b test-funny master^ &&
test_commit funny &&
(
PATH=./test-bin:$PATH &&
git rebase -s funny -Xopt master
) &&
test -f funny.was.run
'
test_expect_success 'rebase --skip works with two conflicts in a row' '
git checkout second-side &&
tr "[A-Z]" "[a-z]" <newfile >tmp &&
mv tmp newfile &&
git commit -a -m"edit conflicting with side" &&
tr "[d-f]" "[D-F]" <newfile >tmp &&
mv tmp newfile &&
git commit -a -m"another edit conflicting with side" &&
test_must_fail git rebase --merge test-conflicts &&
test_must_fail git rebase --skip &&
git rebase --skip
'
test_expect_success '--reapply-cherry-picks' '
git init repo &&
# O(1-10) -- O(1-11) -- O(0-10) master
# \
# -- O(1-11) -- O(1-12) otherbranch
printf "Line %d\n" $(test_seq 1 10) >repo/file.txt &&
git -C repo add file.txt &&
git -C repo commit -m "base commit" &&
printf "Line %d\n" $(test_seq 1 11) >repo/file.txt &&
git -C repo commit -a -m "add 11" &&
printf "Line %d\n" $(test_seq 0 10) >repo/file.txt &&
git -C repo commit -a -m "add 0 delete 11" &&
git -C repo checkout -b otherbranch HEAD^^ &&
printf "Line %d\n" $(test_seq 1 11) >repo/file.txt &&
git -C repo commit -a -m "add 11 in another branch" &&
printf "Line %d\n" $(test_seq 1 12) >repo/file.txt &&
git -C repo commit -a -m "add 12 in another branch" &&
# Regular rebase fails, because the 1-11 commit is deduplicated
test_must_fail git -C repo rebase --merge master 2> err &&
test_i18ngrep "error: could not apply.*add 12 in another branch" err &&
git -C repo rebase --abort &&
# With --reapply-cherry-picks, it works
git -C repo rebase --merge --reapply-cherry-picks master
'
test_expect_success '--reapply-cherry-picks refrains from reading unneeded blobs' '
git init server &&
# O(1-10) -- O(1-11) -- O(1-12) master
# \
# -- O(0-10) otherbranch
printf "Line %d\n" $(test_seq 1 10) >server/file.txt &&
git -C server add file.txt &&
git -C server commit -m "merge base" &&
printf "Line %d\n" $(test_seq 1 11) >server/file.txt &&
git -C server commit -a -m "add 11" &&
printf "Line %d\n" $(test_seq 1 12) >server/file.txt &&
git -C server commit -a -m "add 12" &&
git -C server checkout -b otherbranch HEAD^^ &&
printf "Line %d\n" $(test_seq 0 10) >server/file.txt &&
git -C server commit -a -m "add 0" &&
test_config -C server uploadpack.allowfilter 1 &&
test_config -C server uploadpack.allowanysha1inwant 1 &&
git clone --filter=blob:none "file://$(pwd)/server" client &&
git -C client checkout origin/master &&
git -C client checkout origin/otherbranch &&
# Sanity check to ensure that the blobs from the merge base and "add
# 11" are missing
git -C client rev-list --objects --all --missing=print >missing_list &&
MERGE_BASE_BLOB=$(git -C server rev-parse master^^:file.txt) &&
ADD_11_BLOB=$(git -C server rev-parse master^:file.txt) &&
grep "[?]$MERGE_BASE_BLOB" missing_list &&
grep "[?]$ADD_11_BLOB" missing_list &&
git -C client rebase --merge --reapply-cherry-picks origin/master &&
# The blob from the merge base had to be fetched, but not "add 11"
git -C client rev-list --objects --all --missing=print >missing_list &&
! grep "[?]$MERGE_BASE_BLOB" missing_list &&
grep "[?]$ADD_11_BLOB" missing_list
'
test_done