git/t/t5538-push-shallow.sh
Nguyễn Thái Ngọc Duy 0a1bc12b6e receive-pack: allow pushes that update .git/shallow
The basic 8 steps to update .git/shallow does not fully apply here
because the user may choose to accept just a few refs (while fetch
always accepts all refs). The steps are modified a bit.

1-6. same as before. After calling assign_shallow_commits_to_refs at
   step 6, each shallow commit has a bitmap that marks all refs that
   require it.

7. mark all "ours" shallow commits that are reachable from any
   refs. We will need to do the original step 7 on them later.

8. go over all shallow commit bitmaps, mark refs that require new
   shallow commits.

9. setup a strict temporary shallow file to plug all the holes, even
   if it may cut some of our history short. This file is used by all
   hooks. The hooks could use --shallow-file=$GIT_DIR/shallow to
   overcome this and reach everything in current repo.

10. go over the new refs one by one. For each ref, do the reachability
   test if it needs a shallow commit on the list from step 7. Remove
   it if it's reachable from our refs. Gather all required shallow
   commits, run check_everything_connected() with the new ref, then
   install them to .git/shallow.

This mode is disabled by default and can be turned on with
receive.shallowupdate

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-12-10 16:14:18 -08:00

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#!/bin/sh
test_description='push from/to a shallow clone'
. ./test-lib.sh
commit() {
echo "$1" >tracked &&
git add tracked &&
git commit -m "$1"
}
test_expect_success 'setup' '
git config --global transfer.fsckObjects true &&
commit 1 &&
commit 2 &&
commit 3 &&
commit 4 &&
(
git init full-abc &&
cd full-abc &&
commit a &&
commit b &&
commit c
) &&
git clone --no-local --depth=2 .git shallow &&
git --git-dir=shallow/.git log --format=%s >actual &&
cat <<EOF >expect &&
4
3
EOF
test_cmp expect actual &&
git clone --no-local --depth=2 full-abc/.git shallow2 &&
git --git-dir=shallow2/.git log --format=%s >actual &&
cat <<EOF >expect &&
c
b
EOF
test_cmp expect actual
'
test_expect_success 'push from shallow clone' '
(
cd shallow &&
commit 5 &&
git push ../.git +master:refs/remotes/shallow/master
) &&
git log --format=%s shallow/master >actual &&
git fsck &&
cat <<EOF >expect &&
5
4
3
2
1
EOF
test_cmp expect actual
'
test_expect_success 'push from shallow clone, with grafted roots' '
(
cd shallow2 &&
test_must_fail git push ../.git +master:refs/remotes/shallow2/master 2>err &&
grep "shallow2/master.*shallow update not allowed" err
) &&
test_must_fail git rev-parse shallow2/master &&
git fsck
'
test_expect_success 'add new shallow root with receive.updateshallow on' '
test_config receive.shallowupdate true &&
(
cd shallow2 &&
git push ../.git +master:refs/remotes/shallow2/master
) &&
git log --format=%s shallow2/master >actual &&
git fsck &&
cat <<EOF >expect &&
c
b
EOF
test_cmp expect actual
'
test_done