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git/t/t4038-diff-combined.sh
John Keeping edbc00e76d t4038: add tests for "diff --cc --raw <trees>"
Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-02-05 13:54:30 -08:00

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#!/bin/sh
test_description='combined diff'
. ./test-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_done