git/t/t6406-merge-attr.sh
Elijah Newren f19b916535 merge-ort: convert more error() cases to path_msg()
merge_submodule() stores errors using path_msg(), whereas other call
sites make use of the error() function.  This is inconsistent, and
moving towards path_msg() seems more friendly for libification efforts
since it will allow the caller to determine whether the error messages
need to be printed.

Note that this deferred handling of error messages changes the error
message in a recursive merge from
  error: failed to execute internal merge
to
  From inner merge:  error: failed to execute internal merge
which provides a little more information about the error which may be
useful.  Since the recursive merge strategy still only shows the older
error, we had to adjust the new testcase introduced a few commits ago to
just search for the older message somewhere in the output.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-06-20 10:35:25 -07:00

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#!/bin/sh
#
# Copyright (c) 2007 Junio C Hamano
#
test_description='per path merge controlled by merge attribute'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success setup '
for f in text binary union
do
echo Initial >$f && git add $f || return 1
done &&
test_tick &&
git commit -m Initial &&
git branch side &&
for f in text binary union
do
echo Main >>$f && git add $f || return 1
done &&
test_tick &&
git commit -m Main &&
git checkout side &&
for f in text binary union
do
echo Side >>$f && git add $f || return 1
done &&
test_tick &&
git commit -m Side &&
git tag anchor &&
cat >./custom-merge <<-\EOF &&
#!/bin/sh
orig="$1" ours="$2" theirs="$3" exit="$4" path=$5
orig_name="$6" our_name="$7" their_name="$8"
(
echo "orig is $orig"
echo "ours is $ours"
echo "theirs is $theirs"
echo "path is $path"
echo "orig_name is $orig_name"
echo "our_name is $our_name"
echo "their_name is $their_name"
echo "=== orig ==="
cat "$orig"
echo "=== ours ==="
cat "$ours"
echo "=== theirs ==="
cat "$theirs"
) >"$ours+"
cat "$ours+" >"$ours"
rm -f "$ours+"
if test -f ./please-abort
then
echo >>./please-abort killing myself
kill -9 $$
fi
exit "$exit"
EOF
chmod +x ./custom-merge
'
test_expect_success merge '
cat >.gitattributes <<-\EOF &&
binary -merge
union merge=union
EOF
if git merge main
then
echo Gaah, should have conflicted
false
else
echo Ok, conflicted.
fi
'
test_expect_success 'check merge result in index' '
git ls-files -u | grep binary &&
git ls-files -u | grep text &&
! (git ls-files -u | grep union)
'
test_expect_success 'check merge result in working tree' '
git cat-file -p HEAD:binary >binary-orig &&
grep "<<<<<<<" text &&
cmp binary-orig binary &&
! grep "<<<<<<<" union &&
grep Main union &&
grep Side union
'
test_expect_success 'retry the merge with longer context' '
echo text conflict-marker-size=32 >>.gitattributes &&
git checkout -m text &&
sed -ne "/^\([<=>]\)\1\1\1*/{
s/ .*$//
p
}" >actual text &&
grep ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>" actual &&
grep "================================" actual &&
grep "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<" actual
'
test_expect_success 'custom merge backend' '
echo "* merge=union" >.gitattributes &&
echo "text merge=custom" >>.gitattributes &&
git reset --hard anchor &&
git config --replace-all \
merge.custom.driver "./custom-merge %O %A %B 0 %P %S %X %Y" &&
git config --replace-all \
merge.custom.name "custom merge driver for testing" &&
git merge main &&
cmp binary union &&
sed -e 1,3d text >check-1 &&
o=$(git unpack-file main^:text) &&
a=$(git unpack-file side^:text) &&
b=$(git unpack-file main:text) &&
base_revid=$(git rev-parse --short main^) &&
sh -c "./custom-merge $o $a $b 0 text $base_revid HEAD main" &&
sed -e 1,3d $a >check-2 &&
cmp check-1 check-2 &&
rm -f $o $a $b
'
test_expect_success 'custom merge backend' '
git reset --hard anchor &&
git config --replace-all \
merge.custom.driver "./custom-merge %O %A %B 1 %P %S %X %Y" &&
git config --replace-all \
merge.custom.name "custom merge driver for testing" &&
if git merge main
then
echo "Eh? should have conflicted"
false
else
echo "Ok, conflicted"
fi &&
cmp binary union &&
sed -e 1,3d text >check-1 &&
o=$(git unpack-file main^:text) &&
a=$(git unpack-file anchor:text) &&
b=$(git unpack-file main:text) &&
base_revid=$(git rev-parse --short main^) &&
sh -c "./custom-merge $o $a $b 0 text $base_revid HEAD main" &&
sed -e 1,3d $a >check-2 &&
cmp check-1 check-2 &&
sed -e 1,3d -e 4q $a >check-3 &&
echo "path is text" >expect &&
cmp expect check-3 &&
rm -f $o $a $b
'
test_expect_success !WINDOWS 'custom merge driver that is killed with a signal' '
test_when_finished "rm -f output please-abort" &&
git reset --hard anchor &&
git config --replace-all \
merge.custom.driver "./custom-merge %O %A %B 0 %P %S %X %Y" &&
git config --replace-all \
merge.custom.name "custom merge driver for testing" &&
>./please-abort &&
echo "* merge=custom" >.gitattributes &&
test_expect_code 2 git merge main 2>err &&
grep "^error: failed to execute internal merge" err &&
git ls-files -u >output &&
git diff --name-only HEAD >>output &&
test_must_be_empty output
'
test_expect_success 'up-to-date merge without common ancestor' '
git init repo1 &&
git init repo2 &&
test_tick &&
(
cd repo1 &&
>a &&
git add a &&
git commit -m initial
) &&
test_tick &&
(
cd repo2 &&
git commit --allow-empty -m initial
) &&
test_tick &&
(
cd repo1 &&
git fetch ../repo2 main &&
git merge --allow-unrelated-histories FETCH_HEAD
)
'
test_expect_success 'custom merge does not lock index' '
git reset --hard anchor &&
write_script sleep-an-hour.sh <<-\EOF &&
sleep 3600 &
echo $! >sleep.pid
EOF
test_write_lines >.gitattributes \
"* merge=ours" "text merge=sleep-an-hour" &&
test_config merge.ours.driver true &&
test_config merge.sleep-an-hour.driver ./sleep-an-hour.sh &&
# We are testing that the custom merge driver does not block
# index.lock on Windows due to an inherited file handle.
# To ensure that the backgrounded process ran sufficiently
# long (and has been started in the first place), we do not
# ignore the result of the kill command.
# By packaging the command in test_when_finished, we get both
# the correctness check and the clean-up.
test_when_finished "kill \$(cat sleep.pid)" &&
git merge main
'
test_expect_success 'binary files with union attribute' '
git checkout -b bin-main &&
printf "base\0" >bin.txt &&
echo "bin.txt merge=union" >.gitattributes &&
git add bin.txt .gitattributes &&
git commit -m base &&
printf "one\0" >bin.txt &&
git commit -am one &&
git checkout -b bin-side HEAD^ &&
printf "two\0" >bin.txt &&
git commit -am two &&
if test "$GIT_TEST_MERGE_ALGORITHM" = ort
then
test_must_fail git merge bin-main >output
else
test_must_fail git merge bin-main 2>output
fi &&
grep -i "warning.*cannot merge.*HEAD vs. bin-main" output
'
test_expect_success !WINDOWS 'custom merge driver that is killed with a signal on recursive merge' '
test_when_finished "rm -f output please-abort" &&
test_when_finished "git checkout side" &&
git reset --hard anchor &&
git checkout -b base-a main^ &&
echo base-a >text &&
git commit -m base-a text &&
git checkout -b base-b main^ &&
echo base-b >text &&
git commit -m base-b text &&
git checkout -b recursive-a base-a &&
test_must_fail git merge base-b &&
echo recursive-a >text &&
git add text &&
git commit -m recursive-a &&
git checkout -b recursive-b base-b &&
test_must_fail git merge base-a &&
echo recursive-b >text &&
git add text &&
git commit -m recursive-b &&
git config --replace-all \
merge.custom.driver "./custom-merge %O %A %B 0 %P %S %X %Y" &&
git config --replace-all \
merge.custom.name "custom merge driver for testing" &&
>./please-abort &&
echo "* merge=custom" >.gitattributes &&
test_expect_code 2 git merge recursive-a 2>err &&
grep "error: failed to execute internal merge" err &&
git ls-files -u >output &&
git diff --name-only HEAD >>output &&
test_must_be_empty output
'
test_done