de5737caf3
This test needs multiple object IDs that have the same first byte. Update the pack test code to generate a suitable packed value for SHA-256. Update the test to use this value when using SHA-256. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
82 lines
2.2 KiB
Bash
Executable File
82 lines
2.2 KiB
Bash
Executable File
#!/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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. "$TEST_DIRECTORY"/lib-pack.sh
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test_expect_success 'setup' '
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test_oid_cache <<-EOF
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lo_oid sha1:e68fe8129b546b101aee9510c5328e7f21ca1d18
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lo_oid sha256:471819e8c52bf11513f100b2810a8aa0622d5cd3d1c913758a071dd4b3bad8fe
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missing_oid sha1:e69d000000000000000000000000000000000000
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missing_oid sha256:4720000000000000000000000000000000000000000000000000000000000000
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EOF
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'
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# The sha1s we have in our pack. It's important that these have the same
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# starting byte, so that they end up in the same fanout section of the index.
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# That lets us make sure we are exercising the binary search with both sets.
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LO_SHA1=$(test_oid lo_oid)
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HI_SHA1=$EMPTY_BLOB
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# And here's a "missing sha1" which will produce failed lookups. It must also
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# be in the same fanout section, and should be between the two (so that during
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# our binary search, we are sure to end up looking at one or the other of the
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# duplicate runs).
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MISSING_SHA1=$(test_oid missing_oid)
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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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