git-commit-vandalism/t/t7600-merge.sh
Sverre Hvammen Johansen 3d1dd4728b reduce_heads(): thinkofix
When comparing two commit objects for equality, it is sufficient to
compare their in-core pointers because the object layer guarantees the
uniqueness.  However, comparing pointers to two "struct commit_list"
instances that point at the same commit does not make any sense.

Spotted by Sverre Hvammen Johansen who wrote an additional test to expose
the problem, fixed by Miklos Vajna.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-13 13:53:54 -07:00

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#!/bin/sh
#
# Copyright (c) 2007 Lars Hjemli
#
test_description='git-merge
Testing basic merge operations/option parsing.'
. ./test-lib.sh
cat >file <<EOF
1
2
3
4
5
6
7
8
9
EOF
cat >file.1 <<EOF
1 X
2
3
4
5
6
7
8
9
EOF
cat >file.5 <<EOF
1
2
3
4
5 X
6
7
8
9
EOF
cat >file.9 <<EOF
1
2
3
4
5
6
7
8
9 X
EOF
cat >result.1 <<EOF
1 X
2
3
4
5
6
7
8
9
EOF
cat >result.1-5 <<EOF
1 X
2
3
4
5 X
6
7
8
9
EOF
cat >result.1-5-9 <<EOF
1 X
2
3
4
5 X
6
7
8
9 X
EOF
create_merge_msgs() {
echo "Merge commit 'c2'" >msg.1-5 &&
echo "Merge commit 'c2'; commit 'c3'" >msg.1-5-9 &&
echo "Squashed commit of the following:" >squash.1 &&
echo >>squash.1 &&
git log --no-merges ^HEAD c1 >>squash.1 &&
echo "Squashed commit of the following:" >squash.1-5 &&
echo >>squash.1-5 &&
git log --no-merges ^HEAD c2 >>squash.1-5 &&
echo "Squashed commit of the following:" >squash.1-5-9 &&
echo >>squash.1-5-9 &&
git log --no-merges ^HEAD c2 c3 >>squash.1-5-9 &&
echo > msg.nolog &&
echo "* commit 'c3':" >msg.log &&
echo " commit 3" >>msg.log &&
echo >>msg.log
}
verify_diff() {
if ! test_cmp "$1" "$2"
then
echo "$3"
false
fi
}
verify_merge() {
verify_diff "$2" "$1" "[OOPS] bad merge result" &&
if test $(git ls-files -u | wc -l) -gt 0
then
echo "[OOPS] unmerged files"
false
fi &&
if ! git diff --exit-code
then
echo "[OOPS] working tree != index"
false
fi &&
if test -n "$3"
then
git show -s --pretty=format:%s HEAD >msg.act &&
verify_diff "$3" msg.act "[OOPS] bad merge message"
fi
}
verify_head() {
if test "$1" != "$(git rev-parse HEAD)"
then
echo "[OOPS] HEAD != $1"
false
fi
}
verify_parents() {
i=1
while test $# -gt 0
do
if test "$1" != "$(git rev-parse HEAD^$i)"
then
echo "[OOPS] HEAD^$i != $1"
return 1
fi
i=$(expr $i + 1)
shift
done
}
verify_mergeheads() {
i=1
if ! test -f .git/MERGE_HEAD
then
echo "[OOPS] MERGE_HEAD is missing"
false
fi &&
while test $# -gt 0
do
head=$(head -n $i .git/MERGE_HEAD | sed -ne \$p)
if test "$1" != "$head"
then
echo "[OOPS] MERGE_HEAD $i != $1"
return 1
fi
i=$(expr $i + 1)
shift
done
}
verify_no_mergehead() {
if test -f .git/MERGE_HEAD
then
echo "[OOPS] MERGE_HEAD exists"
false
fi
}
test_expect_success 'setup' '
git add file &&
test_tick &&
git commit -m "commit 0" &&
git tag c0 &&
c0=$(git rev-parse HEAD) &&
cp file.1 file &&
git add file &&
test_tick &&
git commit -m "commit 1" &&
git tag c1 &&
c1=$(git rev-parse HEAD) &&
git reset --hard "$c0" &&
cp file.5 file &&
git add file &&
test_tick &&
git commit -m "commit 2" &&
git tag c2 &&
c2=$(git rev-parse HEAD) &&
git reset --hard "$c0" &&
cp file.9 file &&
git add file &&
test_tick &&
git commit -m "commit 3" &&
git tag c3 &&
c3=$(git rev-parse HEAD)
git reset --hard "$c0" &&
create_merge_msgs
'
test_debug 'gitk --all'
test_expect_success 'test option parsing' '
if git merge -$ c1
then
echo "[OOPS] -$ accepted"
false
fi &&
if git merge --no-such c1
then
echo "[OOPS] --no-such accepted"
false
fi &&
if git merge -s foobar c1
then
echo "[OOPS] -s foobar accepted"
false
fi &&
if git merge -s=foobar c1
then
echo "[OOPS] -s=foobar accepted"
false
fi &&
if git merge -m
then
echo "[OOPS] missing commit msg accepted"
false
fi &&
if git merge
then
echo "[OOPS] missing commit references accepted"
false
fi
'
test_expect_success 'merge c0 with c1' '
git reset --hard c0 &&
git merge c1 &&
verify_merge file result.1 &&
verify_head "$c1"
'
test_debug 'gitk --all'
test_expect_success 'merge c1 with c2' '
git reset --hard c1 &&
test_tick &&
git merge c2 &&
verify_merge file result.1-5 msg.1-5 &&
verify_parents $c1 $c2
'
test_debug 'gitk --all'
test_expect_success 'merge c1 with c2 and c3' '
git reset --hard c1 &&
test_tick &&
git merge c2 c3 &&
verify_merge file result.1-5-9 msg.1-5-9 &&
verify_parents $c1 $c2 $c3
'
test_debug 'gitk --all'
test_expect_success 'merge c0 with c1 (no-commit)' '
git reset --hard c0 &&
git merge --no-commit c1 &&
verify_merge file result.1 &&
verify_head $c1
'
test_debug 'gitk --all'
test_expect_success 'merge c1 with c2 (no-commit)' '
git reset --hard c1 &&
git merge --no-commit c2 &&
verify_merge file result.1-5 &&
verify_head $c1 &&
verify_mergeheads $c2
'
test_debug 'gitk --all'
test_expect_success 'merge c1 with c2 and c3 (no-commit)' '
git reset --hard c1 &&
git merge --no-commit c2 c3 &&
verify_merge file result.1-5-9 &&
verify_head $c1 &&
verify_mergeheads $c2 $c3
'
test_debug 'gitk --all'
test_expect_success 'merge c0 with c1 (squash)' '
git reset --hard c0 &&
git merge --squash c1 &&
verify_merge file result.1 &&
verify_head $c0 &&
verify_no_mergehead &&
verify_diff squash.1 .git/SQUASH_MSG "[OOPS] bad squash message"
'
test_debug 'gitk --all'
test_expect_success 'merge c1 with c2 (squash)' '
git reset --hard c1 &&
git merge --squash c2 &&
verify_merge file result.1-5 &&
verify_head $c1 &&
verify_no_mergehead &&
verify_diff squash.1-5 .git/SQUASH_MSG "[OOPS] bad squash message"
'
test_debug 'gitk --all'
test_expect_success 'merge c1 with c2 and c3 (squash)' '
git reset --hard c1 &&
git merge --squash c2 c3 &&
verify_merge file result.1-5-9 &&
verify_head $c1 &&
verify_no_mergehead &&
verify_diff squash.1-5-9 .git/SQUASH_MSG "[OOPS] bad squash message"
'
test_debug 'gitk --all'
test_expect_success 'merge c1 with c2 (no-commit in config)' '
git reset --hard c1 &&
git config branch.master.mergeoptions "--no-commit" &&
git merge c2 &&
verify_merge file result.1-5 &&
verify_head $c1 &&
verify_mergeheads $c2
'
test_debug 'gitk --all'
test_expect_success 'merge c1 with c2 (squash in config)' '
git reset --hard c1 &&
git config branch.master.mergeoptions "--squash" &&
git merge c2 &&
verify_merge file result.1-5 &&
verify_head $c1 &&
verify_no_mergehead &&
verify_diff squash.1-5 .git/SQUASH_MSG "[OOPS] bad squash message"
'
test_debug 'gitk --all'
test_expect_success 'override config option -n with --summary' '
git reset --hard c1 &&
git config branch.master.mergeoptions "-n" &&
test_tick &&
git merge --summary c2 >diffstat.txt &&
verify_merge file result.1-5 msg.1-5 &&
verify_parents $c1 $c2 &&
if ! grep "^ file | *2 +-$" diffstat.txt
then
echo "[OOPS] diffstat was not generated with --summary"
false
fi
'
test_expect_success 'override config option -n with --stat' '
git reset --hard c1 &&
git config branch.master.mergeoptions "-n" &&
test_tick &&
git merge --stat c2 >diffstat.txt &&
verify_merge file result.1-5 msg.1-5 &&
verify_parents $c1 $c2 &&
if ! grep "^ file | *2 +-$" diffstat.txt
then
echo "[OOPS] diffstat was not generated with --stat"
false
fi
'
test_debug 'gitk --all'
test_expect_success 'override config option --stat' '
git reset --hard c1 &&
git config branch.master.mergeoptions "--stat" &&
test_tick &&
git merge -n c2 >diffstat.txt &&
verify_merge file result.1-5 msg.1-5 &&
verify_parents $c1 $c2 &&
if grep "^ file | *2 +-$" diffstat.txt
then
echo "[OOPS] diffstat was generated"
false
fi
'
test_debug 'gitk --all'
test_expect_success 'merge c1 with c2 (override --no-commit)' '
git reset --hard c1 &&
git config branch.master.mergeoptions "--no-commit" &&
test_tick &&
git merge --commit c2 &&
verify_merge file result.1-5 msg.1-5 &&
verify_parents $c1 $c2
'
test_debug 'gitk --all'
test_expect_success 'merge c1 with c2 (override --squash)' '
git reset --hard c1 &&
git config branch.master.mergeoptions "--squash" &&
test_tick &&
git merge --no-squash c2 &&
verify_merge file result.1-5 msg.1-5 &&
verify_parents $c1 $c2
'
test_debug 'gitk --all'
test_expect_success 'merge c0 with c1 (no-ff)' '
git reset --hard c0 &&
git config branch.master.mergeoptions "" &&
test_tick &&
git merge --no-ff c1 &&
verify_merge file result.1 &&
verify_parents $c0 $c1
'
test_debug 'gitk --all'
test_expect_success 'combining --squash and --no-ff is refused' '
test_must_fail git merge --squash --no-ff c1 &&
test_must_fail git merge --no-ff --squash c1
'
test_expect_success 'merge c0 with c1 (ff overrides no-ff)' '
git reset --hard c0 &&
git config branch.master.mergeoptions "--no-ff" &&
git merge --ff c1 &&
verify_merge file result.1 &&
verify_head $c1
'
test_expect_success 'merge log message' '
git reset --hard c0 &&
git merge --no-log c2 &&
git show -s --pretty=format:%b HEAD >msg.act &&
verify_diff msg.nolog msg.act "[OOPS] bad merge log message" &&
git merge --log c3 &&
git show -s --pretty=format:%b HEAD >msg.act &&
verify_diff msg.log msg.act "[OOPS] bad merge log message" &&
git reset --hard HEAD^ &&
git config merge.log yes &&
git merge c3 &&
git show -s --pretty=format:%b HEAD >msg.act &&
verify_diff msg.log msg.act "[OOPS] bad merge log message"
'
test_debug 'gitk --all'
test_expect_success 'merge c1 with c0, c2, c0, and c1' '
git reset --hard c1 &&
git config branch.master.mergeoptions "" &&
test_tick &&
git merge c0 c2 c0 c1 &&
verify_merge file result.1-5 &&
verify_parents $c1 $c2
'
test_debug 'gitk --all'
test_done