#!/bin/sh
test_description='combined diff'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-diff.sh
setup_helper () {
one=$1 branch=$2 side=$3 &&
git branch $side $branch &&
for l in $one two three fyra
do
echo $l
done >file &&
git add file &&
test_tick &&
git commit -m $branch &&
git checkout $side &&
for l in $one two three quatro
do
echo $l
done >file &&
git add file &&
test_tick &&
git commit -m $side &&
test_must_fail git merge $branch &&
for l in $one three four
do
echo $l
done >file &&
git add file &&
test_tick &&
git commit -m "merge $branch into $side"
}
verify_helper () {
it=$1 &&
# Ignore lines that were removed only from the other parent
sed -e '
1,/^@@@/d
/^ -/d
s/^\(.\)./\1/
' "$it" >"$it.actual.1" &&
sed -e '
1,/^@@@/d
/^- /d
s/^.\(.\)/\1/
' "$it" >"$it.actual.2" &&
git diff "$it^" "$it" -- | sed -e '1,/^@@/d' >"$it.expect.1" &&
test_cmp "$it.expect.1" "$it.actual.1" &&
git diff "$it^2" "$it" -- | sed -e '1,/^@@/d' >"$it.expect.2" &&
test_cmp "$it.expect.2" "$it.actual.2"
}
test_expect_success setup '
>file &&
git add file &&
test_tick &&
git commit -m initial &&
git branch withone &&
git branch sansone &&
git checkout withone &&
setup_helper one withone sidewithone &&
git checkout sansone &&
setup_helper "" sansone sidesansone
'
test_expect_success 'check combined output (1)' '
git show sidewithone -- >sidewithone &&
verify_helper sidewithone
'
test_expect_success 'check combined output (1) with git diff <rev>^!' '
git diff sidewithone^! -- >sidewithone &&
verify_helper sidewithone
'
test_expect_success 'check combined output (2)' '
git show sidesansone -- >sidesansone &&
verify_helper sidesansone
'
test_expect_success 'check combined output (2) with git diff <rev>^!' '
git diff sidesansone^! -- >sidesansone &&
verify_helper sidesansone
'
test_expect_success 'diagnose truncated file' '
>file &&
git add file &&
git commit --amend -C HEAD &&
git show >out &&
grep "diff --cc file" out
'
test_expect_success 'setup for --cc --raw' '
blob=$(echo file | git hash-object --stdin -w) &&
base_tree=$(echo "100644 blob $blob file" | git mktree) &&
trees= &&
for i in $(test_seq 1 40)
do
blob=$(echo file$i | git hash-object --stdin -w) &&
trees="$trees$(echo "100644 blob $blob file" | git mktree)$LF" || return 1
done
'
test_expect_success 'check --cc --raw with four trees' '
four_trees=$(echo "$trees" | sed -e 4q) &&
git diff --cc --raw $four_trees $base_tree >out &&
# Check for four leading colons in the output:
grep "^::::[^:]" out
'
test_expect_success 'check --cc --raw with forty trees' '
git diff --cc --raw $trees $base_tree >out &&
# Check for forty leading colons in the output:
grep "^::::::::::::::::::::::::::::::::::::::::[^:]" out
'
test_expect_success 'setup combined ignore spaces' '
git checkout main &&
>test &&
git add test &&
git commit -m initial &&
tr -d Q <<-\EOF >test &&
always coalesce
eol space coalesce Q
space change coalesce
all spa ces coalesce
eol spaces Q
space change
all spa ces
EOF
git commit -m "test space change" -a &&
git checkout -b side HEAD^ &&
tr -d Q <<-\EOF >test &&
always coalesce
eol space coalesce
space change coalesce
all spaces coalesce
eol spaces
space change
all spaces
EOF
git commit -m "test other space changes" -a &&
test_must_fail git merge main &&
tr -d Q <<-\EOF >test &&
eol spaces Q
space change
all spa ces
EOF
git commit -m merged -a
'
test_expect_success 'check combined output (no ignore space)' '
git show >actual.tmp &&
sed -e "1,/^@@@/d" < actual.tmp >actual &&
tr -d Q <<-\EOF >expected &&
--always coalesce
- eol space coalesce
- space change coalesce
- all spaces coalesce
- eol spaces
- space change
- all spaces
-eol space coalesce Q
-space change coalesce
-all spa ces coalesce
+ eol spaces Q
+ space change
+ all spa ces
EOF
compare_diff_patch expected actual
'
test_expect_success 'check combined output (ignore space at eol)' '
git show --ignore-space-at-eol >actual.tmp &&
sed -e "1,/^@@@/d" < actual.tmp >actual &&
tr -d Q <<-\EOF >expected &&
--always coalesce
--eol space coalesce
- space change coalesce
- all spaces coalesce
-space change coalesce
-all spa ces coalesce
eol spaces Q
- space change
- all spaces
+ space change
+ all spa ces
EOF
compare_diff_patch expected actual
'
test_expect_success 'check combined output (ignore space change)' '
git show -b >actual.tmp &&
sed -e "1,/^@@@/d" < actual.tmp >actual &&
tr -d Q <<-\EOF >expected &&
--always coalesce
--eol space coalesce
--space change coalesce
- all spaces coalesce
-all spa ces coalesce
eol spaces Q
space change
- all spaces
+ all spa ces
EOF
compare_diff_patch expected actual
'
test_expect_success 'check combined output (ignore all spaces)' '
git show -w >actual.tmp &&
sed -e "1,/^@@@/d" < actual.tmp >actual &&
tr -d Q <<-\EOF >expected &&
--always coalesce
--eol space coalesce
--space change coalesce
--all spaces coalesce
eol spaces Q
space change
all spa ces
EOF
compare_diff_patch expected actual
'
test_expect_success 'combine diff coalesce simple' '
>test &&
git add test &&
git commit -m initial &&
test_seq 4 >test &&
git commit -a -m empty1 &&
git branch side1 &&
git checkout HEAD^ &&
test_seq 5 >test &&
git commit -a -m empty2 &&
test_must_fail git merge side1 &&
>test &&
git commit -a -m merge &&
git show >actual.tmp &&
sed -e "1,/^@@@/d" < actual.tmp >actual &&
tr -d Q <<-\EOF >expected &&
--1
--2
--3
--4
- 5
EOF
compare_diff_patch expected actual
'
test_expect_success 'combine diff coalesce tricky' '
>test &&
git add test &&
git commit -m initial --allow-empty &&
cat <<-\EOF >test &&
3
1
2
3
4
EOF
git commit -a -m empty1 &&
git branch -f side1 &&
git checkout HEAD^ &&
cat <<-\EOF >test &&
1
3
5
4
EOF
git commit -a -m empty2 &&
git branch -f side2 &&
test_must_fail git merge side1 &&
>test &&
git commit -a -m merge &&
git show >actual.tmp &&
sed -e "1,/^@@@/d" < actual.tmp >actual &&
tr -d Q <<-\EOF >expected &&
-3
--1
-2
--3
- 5
--4
EOF
compare_diff_patch expected actual &&
git checkout -f side1 &&
test_must_fail git merge side2 &&
>test &&
git commit -a -m merge &&
git show >actual.tmp &&
sed -e "1,/^@@@/d" < actual.tmp >actual &&
tr -d Q <<-\EOF >expected &&
- 3
--1
- 2
--3
-5
--4
EOF
compare_diff_patch expected actual
'
test_expect_failure 'combine diff coalesce three parents' '
>test &&
git add test &&
git commit -m initial --allow-empty &&
cat <<-\EOF >test &&
3
1
2
3
4
EOF
git commit -a -m empty1 &&
git checkout -B side1 &&
git checkout HEAD^ &&
cat <<-\EOF >test &&
1
3
7
5
4
EOF
git commit -a -m empty2 &&
git branch -f side2 &&
git checkout HEAD^ &&
cat <<-\EOF >test &&
3
1
6
5
4
EOF
git commit -a -m empty3 &&
>test &&
git add test &&
TREE=$(git write-tree) &&
COMMIT=$(git commit-tree -p HEAD -p side1 -p side2 -m merge $TREE) &&
git show $COMMIT >actual.tmp &&
sed -e "1,/^@@@/d" < actual.tmp >actual &&
tr -d Q <<-\EOF >expected &&
-- 3
---1
- 6
- 2
--3
-7
- -5
---4
EOF
compare_diff_patch expected actual
'
# Test for a bug reported at
# https://lore.kernel.org/git/[email protected]/
# where a delete lines were missing from combined diff output when they
# occurred exactly before the context lines of a later change.
test_expect_success 'combine diff missing delete bug' '
git commit -m initial --allow-empty &&
cat <<-\EOF >test &&
1
2
3
4
EOF
git add test &&
git commit -a -m side1 &&
git checkout -B side1 &&
git checkout HEAD^ &&
cat <<-\EOF >test &&
0
1
2
3
4modified
EOF
git add test &&
git commit -m side2 &&
git branch -f side2 &&
test_must_fail git merge --no-commit side1 &&
cat <<-\EOF >test &&
1
2
3
4modified
EOF
git add test &&
git commit -a -m merge &&
git diff-tree -c -p HEAD >actual.tmp &&
sed -e "1,/^@@@/d" < actual.tmp >actual &&
tr -d Q <<-\EOF >expected &&
- 0
1
2
3
-4
+4modified
EOF
compare_diff_patch expected actual
'
test_expect_success 'combine diff gets tree sorting right' '
# create a directory and a file that sort differently in trees
# versus byte-wise (implied "/" sorts after ".")
git checkout -f main &&
mkdir foo &&
echo base >foo/one &&
echo base >foo/two &&
echo base >foo.ext &&
git add foo foo.ext &&
git commit -m base &&
# one side modifies a file in the directory, along with the root
# file...
echo main >foo/one &&
echo main >foo.ext &&
git commit -a -m main &&
# the other side modifies the other file in the directory
git checkout -b other HEAD^ &&
echo other >foo/two &&
git commit -a -m other &&
# And now we merge. The files in the subdirectory will resolve cleanly,
# meaning that a combined diff will not find them interesting. But it
# will find the tree itself interesting, because it had to be merged.
git checkout main &&
git merge other &&
printf "MM\tfoo\n" >expect &&
git diff-tree -c --name-status -t HEAD >actual.tmp &&
sed 1d <actual.tmp >actual &&
test_cmp expect actual
'
test_expect_success 'setup for --combined-all-paths' '
git branch side1c &&
git branch side2c &&
git checkout side1c &&
test_seq 1 10 >filename-side1c &&
side1cf=$(git hash-object filename-side1c) &&
git add filename-side1c &&
git commit -m with &&
git checkout side2c &&
test_seq 1 9 >filename-side2c &&
echo ten >>filename-side2c &&
side2cf=$(git hash-object filename-side2c) &&
git add filename-side2c &&
git commit -m iam &&
git checkout -b mergery side1c &&
git merge --no-commit side2c &&
git rm filename-side1c &&
echo eleven >>filename-side2c &&
git mv filename-side2c filename-merged &&
mergedf=$(git hash-object filename-merged) &&
git add filename-merged &&
git commit
'
test_expect_success '--combined-all-paths and --raw' '
cat <<-EOF >expect &&
::100644 100644 100644 $side1cf $side2cf $mergedf RR filename-side1c filename-side2c filename-merged
EOF
git diff-tree -c -M --raw --combined-all-paths HEAD >actual.tmp &&
sed 1d <actual.tmp >actual &&
test_cmp expect actual
'
test_expect_success '--combined-all-paths and --cc' '
cat <<-\EOF >expect &&
--- a/filename-side1c
--- a/filename-side2c
+++ b/filename-merged
EOF
git diff-tree --cc -M --combined-all-paths HEAD >actual.tmp &&
grep ^[-+][-+][-+] <actual.tmp >actual &&
test_cmp expect actual
'
test_expect_success FUNNYNAMES 'setup for --combined-all-paths with funny names' '
git branch side1d &&
git branch side2d &&
git checkout side1d &&
test_seq 1 10 >"$(printf "file\twith\ttabs")" &&
git add file* &&
side1df=$(git hash-object *tabs) &&
git commit -m with &&
git checkout side2d &&
test_seq 1 9 >"$(printf "i\tam\ttabbed")" &&
echo ten >>"$(printf "i\tam\ttabbed")" &&
git add *tabbed &&
side2df=$(git hash-object *tabbed) &&
git commit -m iam &&
git checkout -b funny-names-mergery side1d &&
git merge --no-commit side2d &&
git rm *tabs &&
echo eleven >>"$(printf "i\tam\ttabbed")" &&
git mv "$(printf "i\tam\ttabbed")" "$(printf "fickle\tnaming")" &&
git add fickle* &&
headf=$(git hash-object fickle*) &&
git commit &&
head=$(git rev-parse HEAD)
'
test_expect_success FUNNYNAMES '--combined-all-paths and --raw and funny names' '
cat <<-EOF >expect &&
::100644 100644 100644 $side1df $side2df $headf RR "file\twith\ttabs" "i\tam\ttabbed" "fickle\tnaming"
EOF
git diff-tree -c -M --raw --combined-all-paths HEAD >actual.tmp &&
sed 1d <actual.tmp >actual &&
test_cmp expect actual
'
test_expect_success FUNNYNAMES '--combined-all-paths and --raw -and -z and funny names' '
printf "$head\0::100644 100644 100644 $side1df $side2df $headf RR\0file\twith\ttabs\0i\tam\ttabbed\0fickle\tnaming\0" >expect &&
git diff-tree -c -M --raw --combined-all-paths -z HEAD >actual &&
test_cmp expect actual
'
test_expect_success FUNNYNAMES '--combined-all-paths and --cc and funny names' '
cat <<-\EOF >expect &&
--- "a/file\twith\ttabs"
--- "a/i\tam\ttabbed"
+++ "b/fickle\tnaming"
EOF
git diff-tree --cc -M --combined-all-paths HEAD >actual.tmp &&
grep ^[-+][-+][-+] <actual.tmp >actual &&
test_cmp expect actual
'
test_done
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