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77 lines
2.1 KiB
77 lines
2.1 KiB
#!/bin/sh |
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test_description='handling of duplicate objects in incoming packfiles' |
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. ./test-lib.sh |
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. "$TEST_DIRECTORY"/lib-pack.sh |
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if ! test_have_prereq SHA1 |
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then |
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skip_all='not using SHA-1 for objects' |
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test_done |
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fi |
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# The sha1s we have in our pack. It's important that these have the same |
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# starting byte, so that they end up in the same fanout section of the index. |
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# That lets us make sure we are exercising the binary search with both sets. |
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LO_SHA1=e68fe8129b546b101aee9510c5328e7f21ca1d18 |
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HI_SHA1=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 |
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# And here's a "missing sha1" which will produce failed lookups. It must also |
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# be in the same fanout section, and should be between the two (so that during |
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# our binary search, we are sure to end up looking at one or the other of the |
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# duplicate runs). |
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MISSING_SHA1='e69d000000000000000000000000000000000000' |
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# git will never intentionally create packfiles with |
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# duplicate objects, so we have to construct them by hand. |
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# |
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# $1 is the name of the packfile to create |
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# |
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# $2 is the number of times to duplicate each object |
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create_pack () { |
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pack_header "$((2 * $2))" >"$1" && |
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for i in $(test_seq 1 "$2"); do |
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pack_obj $LO_SHA1 && |
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pack_obj $HI_SHA1 |
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done >>"$1" && |
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pack_trailer "$1" |
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} |
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# double-check that create_pack actually works |
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test_expect_success 'pack with no duplicates' ' |
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create_pack no-dups.pack 1 && |
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git index-pack --stdin <no-dups.pack |
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' |
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test_expect_success 'index-pack will allow duplicate objects by default' ' |
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clear_packs && |
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create_pack dups.pack 100 && |
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git index-pack --stdin <dups.pack |
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' |
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test_expect_success 'create batch-check test vectors' ' |
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cat >input <<-EOF && |
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$LO_SHA1 |
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$HI_SHA1 |
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$MISSING_SHA1 |
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EOF |
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cat >expect <<-EOF |
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$LO_SHA1 blob 2 |
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$HI_SHA1 blob 0 |
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$MISSING_SHA1 missing |
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EOF |
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' |
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test_expect_success 'lookup in duplicated pack' ' |
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git cat-file --batch-check <input >actual && |
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test_cmp expect actual |
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' |
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test_expect_success 'index-pack can reject packs with duplicates' ' |
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clear_packs && |
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create_pack dups.pack 2 && |
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test_must_fail git index-pack --strict --stdin <dups.pack && |
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test_expect_code 1 git cat-file -e $LO_SHA1 |
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' |
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test_done
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