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git/t/t5400-send-pack.sh
Jonathan Nieder 8a1b0978ab test: request GIT_TEST_PROTOCOL_VERSION=0 when appropriate
Since 8cbeba0632 (tests: define GIT_TEST_PROTOCOL_VERSION,
2019-02-25), it has been possible to run tests with a newer protocol
version by setting the GIT_TEST_PROTOCOL_VERSION envvar to a version
number.  Tests that assume protocol v0 handle this by explicitly
setting

	GIT_TEST_PROTOCOL_VERSION=

or similar constructs like 'test -z "$GIT_TEST_PROTOCOL_VERSION" ||
return 0' to declare that they only handle the default (v0) protocol.

The emphasis there is a bit off: it would be clearer to specify
GIT_TEST_PROTOCOL_VERSION=0 to inform the reader that these tests are
specifically testing and relying on details of protocol v0.  Do so.

This way, a reader does not need to know what the default protocol
version is, and the tests can continue to work when the default
protocol version used by Git advances past v0.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-15 14:03:55 -08:00

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#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#
test_description='See why rewinding head breaks send-pack
'
. ./test-lib.sh
cnt=64
test_expect_success setup '
test_tick &&
mkdir mozart mozart/is &&
echo "Commit #0" >mozart/is/pink &&
git update-index --add mozart/is/pink &&
tree=$(git write-tree) &&
commit=$(echo "Commit #0" | git commit-tree $tree) &&
zero=$commit &&
parent=$zero &&
i=0 &&
while test $i -le $cnt
do
i=$(($i+1)) &&
test_tick &&
echo "Commit #$i" >mozart/is/pink &&
git update-index --add mozart/is/pink &&
tree=$(git write-tree) &&
commit=$(echo "Commit #$i" | git commit-tree $tree -p $parent) &&
git update-ref refs/tags/commit$i $commit &&
parent=$commit || return 1
done &&
git update-ref HEAD "$commit" &&
git clone ./. victim &&
( cd victim && git config receive.denyCurrentBranch warn && git log ) &&
git update-ref HEAD "$zero" &&
parent=$zero &&
i=0 &&
while test $i -le $cnt
do
i=$(($i+1)) &&
test_tick &&
echo "Rebase #$i" >mozart/is/pink &&
git update-index --add mozart/is/pink &&
tree=$(git write-tree) &&
commit=$(echo "Rebase #$i" | git commit-tree $tree -p $parent) &&
git update-ref refs/tags/rebase$i $commit &&
parent=$commit || return 1
done &&
git update-ref HEAD "$commit" &&
echo Rebase &&
git log'
test_expect_success 'pack the source repository' '
git repack -a -d &&
git prune
'
test_expect_success 'pack the destination repository' '
(
cd victim &&
git repack -a -d &&
git prune
)
'
test_expect_success 'refuse pushing rewound head without --force' '
pushed_head=$(git rev-parse --verify master) &&
victim_orig=$(cd victim && git rev-parse --verify master) &&
test_must_fail git send-pack ./victim master &&
victim_head=$(cd victim && git rev-parse --verify master) &&
test "$victim_head" = "$victim_orig" &&
# this should update
git send-pack --force ./victim master &&
victim_head=$(cd victim && git rev-parse --verify master) &&
test "$victim_head" = "$pushed_head"
'
test_expect_success 'push can be used to delete a ref' '
( cd victim && git branch extra master ) &&
git send-pack ./victim :extra master &&
( cd victim &&
test_must_fail git rev-parse --verify extra )
'
test_expect_success 'refuse deleting push with denyDeletes' '
(
cd victim &&
test_might_fail git branch -D extra &&
git config receive.denyDeletes true &&
git branch extra master
) &&
test_must_fail git send-pack ./victim :extra master
'
test_expect_success 'cannot override denyDeletes with git -c send-pack' '
(
cd victim &&
test_might_fail git branch -D extra &&
git config receive.denyDeletes true &&
git branch extra master
) &&
test_must_fail git -c receive.denyDeletes=false \
send-pack ./victim :extra master
'
test_expect_success 'override denyDeletes with git -c receive-pack' '
(
cd victim &&
test_might_fail git branch -D extra &&
git config receive.denyDeletes true &&
git branch extra master
) &&
git send-pack \
--receive-pack="git -c receive.denyDeletes=false receive-pack" \
./victim :extra master
'
test_expect_success 'denyNonFastforwards trumps --force' '
(
cd victim &&
test_might_fail git branch -D extra &&
git config receive.denyNonFastforwards true
) &&
victim_orig=$(cd victim && git rev-parse --verify master) &&
test_must_fail git send-pack --force ./victim master^:master &&
victim_head=$(cd victim && git rev-parse --verify master) &&
test "$victim_orig" = "$victim_head"
'
test_expect_success 'send-pack --all sends all branches' '
# make sure we have at least 2 branches with different
# values, just to be thorough
git branch other-branch HEAD^ &&
git init --bare all.git &&
git send-pack --all all.git &&
git for-each-ref refs/heads >expect &&
git -C all.git for-each-ref refs/heads >actual &&
test_cmp expect actual
'
test_expect_success 'push --all excludes remote-tracking hierarchy' '
mkdir parent &&
(
cd parent &&
git init && : >file && git add file && git commit -m add
) &&
git clone parent child &&
(
cd child && git push --all
) &&
(
cd parent &&
test -z "$(git for-each-ref refs/remotes/origin)"
)
'
test_expect_success 'receive-pack runs auto-gc in remote repo' '
rm -rf parent child &&
git init parent &&
(
# Setup a repo with 2 packs
cd parent &&
echo "Some text" >file.txt &&
git add . &&
git commit -m "Initial commit" &&
git repack -adl &&
echo "Some more text" >>file.txt &&
git commit -a -m "Second commit" &&
git repack
) &&
cp -R parent child &&
(
# Set the child to auto-pack if more than one pack exists
cd child &&
git config gc.autopacklimit 1 &&
git config gc.autodetach false &&
git branch test_auto_gc &&
# And create a file that follows the temporary object naming
# convention for the auto-gc to remove
: >.git/objects/tmp_test_object &&
test-tool chmtime =-1209601 .git/objects/tmp_test_object
) &&
(
cd parent &&
echo "Even more text" >>file.txt &&
git commit -a -m "Third commit" &&
git send-pack ../child HEAD:refs/heads/test_auto_gc
) &&
test ! -e child/.git/objects/tmp_test_object
'
rewound_push_setup() {
rm -rf parent child &&
mkdir parent &&
(
cd parent &&
git init &&
echo one >file && git add file && git commit -m one &&
git config receive.denyCurrentBranch warn &&
echo two >file && git commit -a -m two
) &&
git clone parent child &&
(
cd child && git reset --hard HEAD^
)
}
test_expect_success 'pushing explicit refspecs respects forcing' '
rewound_push_setup &&
parent_orig=$(cd parent && git rev-parse --verify master) &&
(
cd child &&
test_must_fail git send-pack ../parent \
refs/heads/master:refs/heads/master
) &&
parent_head=$(cd parent && git rev-parse --verify master) &&
test "$parent_orig" = "$parent_head" &&
(
cd child &&
git send-pack ../parent \
+refs/heads/master:refs/heads/master
) &&
parent_head=$(cd parent && git rev-parse --verify master) &&
child_head=$(cd child && git rev-parse --verify master) &&
test "$parent_head" = "$child_head"
'
test_expect_success 'pushing wildcard refspecs respects forcing' '
rewound_push_setup &&
parent_orig=$(cd parent && git rev-parse --verify master) &&
(
cd child &&
test_must_fail git send-pack ../parent \
"refs/heads/*:refs/heads/*"
) &&
parent_head=$(cd parent && git rev-parse --verify master) &&
test "$parent_orig" = "$parent_head" &&
(
cd child &&
git send-pack ../parent \
"+refs/heads/*:refs/heads/*"
) &&
parent_head=$(cd parent && git rev-parse --verify master) &&
child_head=$(cd child && git rev-parse --verify master) &&
test "$parent_head" = "$child_head"
'
test_expect_success 'deny pushing to delete current branch' '
rewound_push_setup &&
(
cd child &&
test_must_fail git send-pack ../parent :refs/heads/master 2>errs
)
'
extract_ref_advertisement () {
perl -lne '
# \\ is there to skip capabilities after \0
/push< ([^\\]+)/ or next;
exit 0 if $1 eq "0000";
print $1;
'
}
test_expect_success 'receive-pack de-dupes .have lines' '
git init shared &&
git -C shared commit --allow-empty -m both &&
git clone -s shared fork &&
(
cd shared &&
git checkout -b only-shared &&
git commit --allow-empty -m only-shared &&
git update-ref refs/heads/foo HEAD
) &&
# Notable things in this expectation:
# - local refs are not de-duped
# - .have does not duplicate locals
# - .have does not duplicate itself
local=$(git -C fork rev-parse HEAD) &&
shared=$(git -C shared rev-parse only-shared) &&
cat >expect <<-EOF &&
$local refs/heads/master
$local refs/remotes/origin/HEAD
$local refs/remotes/origin/master
$shared .have
EOF
GIT_TRACE_PACKET=$(pwd)/trace GIT_TEST_PROTOCOL_VERSION=0 \
git push \
--receive-pack="unset GIT_TRACE_PACKET; git-receive-pack" \
fork HEAD:foo &&
extract_ref_advertisement <trace >refs &&
test_cmp expect refs
'
test_done