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-rwxr-xr-xt/t4038-diff-combined.sh533
1 files changed, 533 insertions, 0 deletions
diff --git a/t/t4038-diff-combined.sh b/t/t4038-diff-combined.sh
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--- /dev/null
+++ b/t/t4038-diff-combined.sh
@@ -0,0 +1,533 @@
+#!/bin/sh
+
+test_description='combined diff'
+
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/diff-lib.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 (2)' '
+ git show 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"
+ 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 master &&
+ >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 master &&
+ 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/20130515143508.GO25742@login.drsnuggles.stderr.nl/
+# 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 master &&
+ 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 master >foo/one &&
+ echo master >foo.ext &&
+ git commit -a -m master &&
+
+ # 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 master &&
+ 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