git-commit-vandalism/t/t4038-diff-combined.sh
Antoine Pelisse fa04ae0be8 Allow combined diff to ignore white-spaces
The combined diff --cc output does not honor options to ignore
whitespace changes (-b, -w, and --ignore-space-at-eol).

Correct this by passing diff flags to diff engine, so that combined
diff behaves as normal diff does with spaces, and by coalescing
lines that are removed from both (or more) parents, honoring the
same rule to ignore whitespace changes.

With this change, a conflict-less merge done using a ignore-*
strategy option will not show any conflict if shown in combined-diff
using the same option.

Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-03-14 14:43:34 -07:00

228 lines
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Executable File

#!/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_done