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171bdaca JK |
1 | #!/bin/sh |
2 | ||
3 | test_description='handling of duplicate objects in incoming packfiles' | |
330ca850 ÆAB |
4 | |
5 | TEST_PASSES_SANITIZE_LEAK=true | |
171bdaca JK |
6 | . ./test-lib.sh |
7 | . "$TEST_DIRECTORY"/lib-pack.sh | |
8 | ||
de5737ca | 9 | test_expect_success 'setup' ' |
10 | test_oid_cache <<-EOF | |
11 | lo_oid sha1:e68fe8129b546b101aee9510c5328e7f21ca1d18 | |
12 | lo_oid sha256:471819e8c52bf11513f100b2810a8aa0622d5cd3d1c913758a071dd4b3bad8fe | |
13 | ||
14 | missing_oid sha1:e69d000000000000000000000000000000000000 | |
15 | missing_oid sha256:4720000000000000000000000000000000000000000000000000000000000000 | |
16 | EOF | |
17 | ' | |
2bc3d126 | 18 | |
171bdaca JK |
19 | # The sha1s we have in our pack. It's important that these have the same |
20 | # starting byte, so that they end up in the same fanout section of the index. | |
21 | # That lets us make sure we are exercising the binary search with both sets. | |
de5737ca | 22 | LO_SHA1=$(test_oid lo_oid) |
23 | HI_SHA1=$EMPTY_BLOB | |
171bdaca JK |
24 | |
25 | # And here's a "missing sha1" which will produce failed lookups. It must also | |
26 | # be in the same fanout section, and should be between the two (so that during | |
27 | # our binary search, we are sure to end up looking at one or the other of the | |
28 | # duplicate runs). | |
de5737ca | 29 | MISSING_SHA1=$(test_oid missing_oid) |
171bdaca JK |
30 | |
31 | # git will never intentionally create packfiles with | |
32 | # duplicate objects, so we have to construct them by hand. | |
33 | # | |
34 | # $1 is the name of the packfile to create | |
35 | # | |
36 | # $2 is the number of times to duplicate each object | |
37 | create_pack () { | |
38 | pack_header "$((2 * $2))" >"$1" && | |
39 | for i in $(test_seq 1 "$2"); do | |
40 | pack_obj $LO_SHA1 && | |
41 | pack_obj $HI_SHA1 | |
42 | done >>"$1" && | |
43 | pack_trailer "$1" | |
44 | } | |
45 | ||
46 | # double-check that create_pack actually works | |
47 | test_expect_success 'pack with no duplicates' ' | |
48 | create_pack no-dups.pack 1 && | |
49 | git index-pack --stdin <no-dups.pack | |
50 | ' | |
51 | ||
52 | test_expect_success 'index-pack will allow duplicate objects by default' ' | |
53 | clear_packs && | |
54 | create_pack dups.pack 100 && | |
55 | git index-pack --stdin <dups.pack | |
56 | ' | |
57 | ||
58 | test_expect_success 'create batch-check test vectors' ' | |
59 | cat >input <<-EOF && | |
60 | $LO_SHA1 | |
61 | $HI_SHA1 | |
62 | $MISSING_SHA1 | |
63 | EOF | |
64 | cat >expect <<-EOF | |
65 | $LO_SHA1 blob 2 | |
66 | $HI_SHA1 blob 0 | |
67 | $MISSING_SHA1 missing | |
68 | EOF | |
69 | ' | |
70 | ||
f1068efe | 71 | test_expect_success 'lookup in duplicated pack' ' |
171bdaca JK |
72 | git cat-file --batch-check <input >actual && |
73 | test_cmp expect actual | |
74 | ' | |
75 | ||
16c159d7 JK |
76 | test_expect_success 'index-pack can reject packs with duplicates' ' |
77 | clear_packs && | |
78 | create_pack dups.pack 2 && | |
79 | test_must_fail git index-pack --strict --stdin <dups.pack && | |
80 | test_expect_code 1 git cat-file -e $LO_SHA1 | |
81 | ' | |
82 | ||
171bdaca | 83 | test_done |