freshlybakedca.ke
Git fork
1#!/bin/sh
2
3test_description='test index-pack handling of delta cycles in packfiles'
4
5. ./test-lib.sh
6. "$TEST_DIRECTORY"/lib-pack.sh
7
8# Two similar-ish objects that we have computed deltas between.
9A=$(test_oid packlib_7_0)
10B=$(test_oid packlib_7_76)
11
12# double-check our hand-constucted packs
13test_expect_success 'index-pack works with a single delta (A->B)' '
14 clear_packs &&
15 {
16 pack_header 2 &&
17 pack_obj $A $B &&
18 pack_obj $B
19 } >ab.pack &&
20 pack_trailer ab.pack &&
21 git index-pack --stdin <ab.pack &&
22 git cat-file -t $A &&
23 git cat-file -t $B
24'
25
26test_expect_success 'index-pack works with a single delta (B->A)' '
27 clear_packs &&
28 {
29 pack_header 2 &&
30 pack_obj $A &&
31 pack_obj $B $A
32 } >ba.pack &&
33 pack_trailer ba.pack &&
34 git index-pack --stdin <ba.pack &&
35 git cat-file -t $A &&
36 git cat-file -t $B
37'
38
39test_expect_success 'index-pack detects missing base objects' '
40 clear_packs &&
41 {
42 pack_header 1 &&
43 pack_obj $A $B
44 } >missing.pack &&
45 pack_trailer missing.pack &&
46 test_must_fail git index-pack --fix-thin --stdin <missing.pack
47'
48
49test_expect_success 'index-pack detects REF_DELTA cycles' '
50 clear_packs &&
51 {
52 pack_header 2 &&
53 pack_obj $A $B &&
54 pack_obj $B $A
55 } >cycle.pack &&
56 pack_trailer cycle.pack &&
57 test_must_fail git index-pack --fix-thin --stdin <cycle.pack
58'
59
60test_expect_success 'failover to an object in another pack' '
61 clear_packs &&
62 git index-pack --stdin <ab.pack &&
63
64 # This cycle does not fail since the existence of A & B in
65 # the repo allows us to resolve the cycle.
66 git index-pack --stdin --fix-thin <cycle.pack
67'
68
69test_expect_success 'failover to a duplicate object in the same pack' '
70 clear_packs &&
71 {
72 pack_header 3 &&
73 pack_obj $A $B &&
74 pack_obj $B $A &&
75 pack_obj $A
76 } >recoverable.pack &&
77 pack_trailer recoverable.pack &&
78
79 # This cycle does not fail since the existence of a full copy
80 # of A in the pack allows us to resolve the cycle.
81 git index-pack --fix-thin --stdin <recoverable.pack
82'
83
84test_expect_success 'index-pack works with thin pack A->B->C with B on disk' '
85 git init server &&
86 (
87 cd server &&
88 test_commit_bulk 4
89 ) &&
90
91 A=$(git -C server rev-parse HEAD^{tree}) &&
92 B=$(git -C server rev-parse HEAD~1^{tree}) &&
93 C=$(git -C server rev-parse HEAD~2^{tree}) &&
94 git -C server reset --hard HEAD~1 &&
95
96 test-tool -C server pack-deltas --num-objects=2 >thin.pack <<-EOF &&
97 REF_DELTA $A $B
98 REF_DELTA $B $C
99 EOF
100
101 git clone "file://$(pwd)/server" client &&
102 (
103 cd client &&
104 git index-pack --fix-thin --stdin <../thin.pack
105 )
106'
107
108test_done