mirror of
https://github.com/git/git.git
synced 2024-12-01 22:13:45 +08:00
16c159d75a
Commit 68be2fea (receive-pack, fetch-pack: reject bogus pack that
records objects twice, 2011-11-16) taught index-pack to notice and
reject duplicate objects if --strict is given (which it is for
incoming packs, if transfer.fsckObjects is set). However, it never
tested the code, because we did not have an easy way of generating
such a bogus pack.
Now that we have test infrastructure to handle this, let's confirm
that it works.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
81 lines
2.2 KiB
Bash
Executable File
81 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
test_description='handling of duplicate objects in incoming packfiles'
|
|
. ./test-lib.sh
|
|
. "$TEST_DIRECTORY"/lib-pack.sh
|
|
|
|
# The sha1s we have in our pack. It's important that these have the same
|
|
# starting byte, so that they end up in the same fanout section of the index.
|
|
# That lets us make sure we are exercising the binary search with both sets.
|
|
LO_SHA1=e68fe8129b546b101aee9510c5328e7f21ca1d18
|
|
HI_SHA1=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
|
|
|
|
# And here's a "missing sha1" which will produce failed lookups. It must also
|
|
# be in the same fanout section, and should be between the two (so that during
|
|
# our binary search, we are sure to end up looking at one or the other of the
|
|
# duplicate runs).
|
|
MISSING_SHA1='e69d000000000000000000000000000000000000'
|
|
|
|
# git will never intentionally create packfiles with
|
|
# duplicate objects, so we have to construct them by hand.
|
|
#
|
|
# $1 is the name of the packfile to create
|
|
#
|
|
# $2 is the number of times to duplicate each object
|
|
create_pack () {
|
|
pack_header "$((2 * $2))" >"$1" &&
|
|
for i in $(test_seq 1 "$2"); do
|
|
pack_obj $LO_SHA1 &&
|
|
pack_obj $HI_SHA1
|
|
done >>"$1" &&
|
|
pack_trailer "$1"
|
|
}
|
|
|
|
# double-check that create_pack actually works
|
|
test_expect_success 'pack with no duplicates' '
|
|
create_pack no-dups.pack 1 &&
|
|
git index-pack --stdin <no-dups.pack
|
|
'
|
|
|
|
test_expect_success 'index-pack will allow duplicate objects by default' '
|
|
clear_packs &&
|
|
create_pack dups.pack 100 &&
|
|
git index-pack --stdin <dups.pack
|
|
'
|
|
|
|
test_expect_success 'create batch-check test vectors' '
|
|
cat >input <<-EOF &&
|
|
$LO_SHA1
|
|
$HI_SHA1
|
|
$MISSING_SHA1
|
|
EOF
|
|
cat >expect <<-EOF
|
|
$LO_SHA1 blob 2
|
|
$HI_SHA1 blob 0
|
|
$MISSING_SHA1 missing
|
|
EOF
|
|
'
|
|
|
|
test_expect_success 'lookup in duplicated pack (binary search)' '
|
|
git cat-file --batch-check <input >actual &&
|
|
test_cmp expect actual
|
|
'
|
|
|
|
test_expect_success 'lookup in duplicated pack (GIT_USE_LOOKUP)' '
|
|
(
|
|
GIT_USE_LOOKUP=1 &&
|
|
export GIT_USE_LOOKUP &&
|
|
git cat-file --batch-check <input >actual
|
|
) &&
|
|
test_cmp expect actual
|
|
'
|
|
|
|
test_expect_success 'index-pack can reject packs with duplicates' '
|
|
clear_packs &&
|
|
create_pack dups.pack 2 &&
|
|
test_must_fail git index-pack --strict --stdin <dups.pack &&
|
|
test_expect_code 1 git cat-file -e $LO_SHA1
|
|
'
|
|
|
|
test_done
|