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|
#!/bin/sh
test_description='test index-pack handling of delta cycles in packfiles'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-pack.sh
# Two similar-ish objects that we have computed deltas between.
A=$(test_oid packlib_7_0)
B=$(test_oid packlib_7_76)
# double-check our hand-constucted packs
test_expect_success 'index-pack works with a single delta (A->B)' '
clear_packs &&
{
pack_header 2 &&
pack_obj $A $B &&
pack_obj $B
} >ab.pack &&
pack_trailer ab.pack &&
git index-pack --stdin <ab.pack &&
git cat-file -t $A &&
git cat-file -t $B
'
test_expect_success 'index-pack works with a single delta (B->A)' '
clear_packs &&
{
pack_header 2 &&
pack_obj $A &&
pack_obj $B $A
} >ba.pack &&
pack_trailer ba.pack &&
git index-pack --stdin <ba.pack &&
git cat-file -t $A &&
git cat-file -t $B
'
test_expect_success 'index-pack detects missing base objects' '
clear_packs &&
{
pack_header 1 &&
pack_obj $A $B
} >missing.pack &&
pack_trailer missing.pack &&
test_must_fail git index-pack --fix-thin --stdin <missing.pack
'
test_expect_success 'index-pack detects REF_DELTA cycles' '
clear_packs &&
{
pack_header 2 &&
pack_obj $A $B &&
pack_obj $B $A
} >cycle.pack &&
pack_trailer cycle.pack &&
test_must_fail git index-pack --fix-thin --stdin <cycle.pack
'
test_expect_success 'failover to an object in another pack' '
clear_packs &&
git index-pack --stdin <ab.pack &&
# This cycle does not fail since the existence of A & B in
# the repo allows us to resolve the cycle.
git index-pack --stdin --fix-thin <cycle.pack
'
test_expect_success 'failover to a duplicate object in the same pack' '
clear_packs &&
{
pack_header 3 &&
pack_obj $A $B &&
pack_obj $B $A &&
pack_obj $A
} >recoverable.pack &&
pack_trailer recoverable.pack &&
# This cycle does not fail since the existence of a full copy
# of A in the pack allows us to resolve the cycle.
git index-pack --fix-thin --stdin <recoverable.pack
'
test_expect_success 'index-pack works with thin pack A->B->C with B on disk' '
git init server &&
(
cd server &&
test_commit_bulk 4
) &&
A=$(git -C server rev-parse HEAD^{tree}) &&
B=$(git -C server rev-parse HEAD~1^{tree}) &&
C=$(git -C server rev-parse HEAD~2^{tree}) &&
git -C server reset --hard HEAD~1 &&
test-tool -C server pack-deltas --num-objects=2 >thin.pack <<-EOF &&
REF_DELTA $A $B
REF_DELTA $B $C
EOF
git clone "file://$(pwd)/server" client &&
(
cd client &&
git index-pack --fix-thin --stdin <../thin.pack
)
'
test_done
|
