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git/t/t2203-add-intent.sh
Nguyễn Thái Ngọc Duy 6d6a782fbf cache-tree: do not generate empty trees as a result of all i-t-a subentries
If a subdirectory contains nothing but i-t-a entries, we generate an
empty tree object and add it to its parent tree. Which is wrong. Such
a subdirectory should not be added.

Note that this has a cascading effect. If subdir 'a/b/c' contains
nothing but i-t-a entries, we ignore it. But then if 'a/b' contains
only (the non-existing) 'a/b/c', then we should ignore 'a/b' while
building 'a' too. And it goes all the way up to top directory.

Noticed-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-07-18 13:45:33 -07:00

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#!/bin/sh
test_description='Intent to add'
. ./test-lib.sh
test_expect_success 'intent to add' '
echo hello >file &&
echo hello >elif &&
git add -N file &&
git add elif
'
test_expect_success 'check result of "add -N"' '
git ls-files -s file >actual &&
empty=$(git hash-object --stdin </dev/null) &&
echo "100644 $empty 0 file" >expect &&
test_cmp expect actual
'
test_expect_success 'intent to add is just an ordinary empty blob' '
git add -u &&
git ls-files -s file >actual &&
git ls-files -s elif | sed -e "s/elif/file/" >expect &&
test_cmp expect actual
'
test_expect_success 'intent to add does not clobber existing paths' '
git add -N file elif &&
empty=$(git hash-object --stdin </dev/null) &&
git ls-files -s >actual &&
! grep "$empty" actual
'
test_expect_success 'i-t-a entry is simply ignored' '
test_tick &&
git commit -a -m initial &&
git reset --hard &&
echo xyzzy >rezrov &&
echo frotz >nitfol &&
git add rezrov &&
git add -N nitfol &&
git commit -m second &&
test $(git ls-tree HEAD -- nitfol | wc -l) = 0 &&
test $(git diff --name-only HEAD -- nitfol | wc -l) = 1
'
test_expect_success 'can commit with an unrelated i-t-a entry in index' '
git reset --hard &&
echo bozbar >rezrov &&
echo frotz >nitfol &&
git add rezrov &&
git add -N nitfol &&
git commit -m partial rezrov
'
test_expect_success 'can "commit -a" with an i-t-a entry' '
git reset --hard &&
: >nitfol &&
git add -N nitfol &&
git commit -a -m all
'
test_expect_success 'cache-tree invalidates i-t-a paths' '
git reset --hard &&
mkdir dir &&
: >dir/foo &&
git add dir/foo &&
git commit -m foo &&
: >dir/bar &&
git add -N dir/bar &&
git diff --cached --name-only >actual &&
echo dir/bar >expect &&
test_cmp expect actual &&
git write-tree >/dev/null &&
git diff --cached --name-only >actual &&
echo dir/bar >expect &&
test_cmp expect actual
'
test_expect_success 'cache-tree does not ignore dir that has i-t-a entries' '
git init ita-in-dir &&
(
cd ita-in-dir &&
mkdir 2 &&
for f in 1 2/1 2/2 3
do
echo "$f" >"$f"
done &&
git add 1 2/2 3 &&
git add -N 2/1 &&
git commit -m committed &&
git ls-tree -r HEAD >actual &&
grep 2/2 actual
)
'
test_expect_success 'cache-tree does skip dir that becomes empty' '
rm -fr ita-in-dir &&
git init ita-in-dir &&
(
cd ita-in-dir &&
mkdir -p 1/2/3 &&
echo 4 >1/2/3/4 &&
git add -N 1/2/3/4 &&
git write-tree >actual &&
echo $EMPTY_TREE >expected &&
test_cmp expected actual
)
'
test_done