3 test_description='handling of duplicate objects in incoming packfiles'
5 . "$TEST_DIRECTORY"/lib-pack.sh
7 if ! test_have_prereq SHA1
9 skip_all='not using SHA-1 for objects'
13 # The sha1s we have in our pack. It's important that these have the same
14 # starting byte, so that they end up in the same fanout section of the index.
15 # That lets us make sure we are exercising the binary search with both sets.
16 LO_SHA1=e68fe8129b546b101aee9510c5328e7f21ca1d18
17 HI_SHA1=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
19 # And here's a "missing sha1" which will produce failed lookups. It must also
20 # be in the same fanout section, and should be between the two (so that during
21 # our binary search, we are sure to end up looking at one or the other of the
23 MISSING_SHA1='e69d000000000000000000000000000000000000'
25 # git will never intentionally create packfiles with
26 # duplicate objects, so we have to construct them by hand.
28 # $1 is the name of the packfile to create
30 # $2 is the number of times to duplicate each object
32 pack_header "$((2 * $2))" >"$1" &&
33 for i in $(test_seq 1 "$2"); do
40 # double-check that create_pack actually works
41 test_expect_success 'pack with no duplicates' '
42 create_pack no-dups.pack 1 &&
43 git index-pack --stdin <no-dups.pack
46 test_expect_success 'index-pack will allow duplicate objects by default' '
48 create_pack dups.pack 100 &&
49 git index-pack --stdin <dups.pack
52 test_expect_success 'create batch-check test vectors' '
65 test_expect_success 'lookup in duplicated pack' '
66 git cat-file --batch-check <input >actual &&
67 test_cmp expect actual
70 test_expect_success 'index-pack can reject packs with duplicates' '
72 create_pack dups.pack 2 &&
73 test_must_fail git index-pack --strict --stdin <dups.pack &&
74 test_expect_code 1 git cat-file -e $LO_SHA1