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t6500: extract objects with "17" prefix

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The ".git/obects/17/" shard is somewhat special because it is used by
git-gc(1) to estimate how many objects there are by extrapolating the
number of objects in that shard, only. In t6500 we thus have a hard
coded set of data that, when written to the object database, result in
blobs starting with that prefix.

We are about to need such "17"-prefixed objects in another test suite.
Extract them into "t/oid-info/hash-info" so that they can be reused by
other tests.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt 2024-03-25 11:03:28 +01:00 committed by Junio C Hamano
parent 0e05d53992
commit 77257e3c7e
2 changed files with 19 additions and 23 deletions
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12
t/oid-info/hash-info
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@ -15,3 +15,15 @@ empty_blob sha256:473a0f4c3be8a93681a267e3b1e9a7dcda1185436fe141f7749120a3037218
empty_tree sha1:4b825dc642cb6eb9a060e54bf8d69288fbee4904
empty_tree sha256:6ef19b41225c5369f1c104d45d8d85efa9b057b53b14b4b9b939dd74decc5321
blob17_1 sha1:263
blob17_1 sha256:34
blob17_2 sha1:410
blob17_2 sha256:174
blob17_3 sha1:523
blob17_3 sha256:313
blob17_4 sha1:790
blob17_4 sha256:481

30
t/t6500-gc.sh
View File

@ -11,23 +11,7 @@ test_expect_success 'setup' '
# behavior, make sure we always pack everything to one pack by
# default
git config gc.bigPackThreshold 2g &&
# These are simply values which, when hashed as a blob with a newline,
# produce a hash where the first byte is 0x17 in their respective
# algorithms.
test_oid_cache <<-EOF
obj1 sha1:263
obj1 sha256:34
obj2 sha1:410
obj2 sha256:174
obj3 sha1:523
obj3 sha256:313
obj4 sha1:790
obj4 sha256:481
EOF
test_oid_init
'
test_expect_success 'gc empty repository' '
@ -114,8 +98,8 @@ test_expect_success 'pre-auto-gc hook can stop auto gc' '
# We need to create two object whose sha1s start with 17
# since this is what git gc counts. As it happens, these
# two blobs will do so.
test_commit "$(test_oid obj1)" &&
test_commit "$(test_oid obj2)" &&
test_commit "$(test_oid blob17_1)" &&
test_commit "$(test_oid blob17_2)" &&
git gc --auto >../out.actual 2>../err.actual
) &&
@ -146,13 +130,13 @@ test_expect_success 'auto gc with too many loose objects does not attempt to cre
# We need to create two object whose sha1s start with 17
# since this is what git gc counts. As it happens, these
# two blobs will do so.
test_commit "$(test_oid obj1)" &&
test_commit "$(test_oid obj2)" &&
test_commit "$(test_oid blob17_1)" &&
test_commit "$(test_oid blob17_2)" &&
# Our first gc will create a pack; our second will create a second pack
git gc --auto &&
ls .git/objects/pack/pack-*.pack | sort >existing_packs &&
test_commit "$(test_oid obj3)" &&
test_commit "$(test_oid obj4)" &&
test_commit "$(test_oid blob17_3)" &&
test_commit "$(test_oid blob17_4)" &&
git gc --auto 2>err &&
test_grep ! "^warning:" err &&