config: create core.multiPackIndex setting
[git/git.git] / t / t5319-multi-pack-index.sh
1 #!/bin/sh
2
3 test_description='multi-pack-indexes'
4 . ./test-lib.sh
5
6 objdir=.git/objects
7
8 midx_read_expect () {
9 NUM_PACKS=$1
10 NUM_OBJECTS=$2
11 NUM_CHUNKS=$3
12 OBJECT_DIR=$4
13 EXTRA_CHUNKS="$5"
14 {
15 cat <<-EOF &&
16 header: 4d494458 1 $NUM_CHUNKS $NUM_PACKS
17 chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
18 num_objects: $NUM_OBJECTS
19 packs:
20 EOF
21 if test $NUM_PACKS -ge 1
22 then
23 ls $OBJECT_DIR/pack/ | grep idx | sort
24 fi &&
25 printf "object-dir: $OBJECT_DIR\n"
26 } >expect &&
27 test-tool read-midx $OBJECT_DIR >actual &&
28 test_cmp expect actual
29 }
30
31 test_expect_success 'write midx with no packs' '
32 test_when_finished rm -f pack/multi-pack-index &&
33 git multi-pack-index --object-dir=. write &&
34 midx_read_expect 0 0 4 .
35 '
36
37 generate_objects () {
38 i=$1
39 iii=$(printf '%03i' $i)
40 {
41 test-tool genrandom "bar" 200 &&
42 test-tool genrandom "baz $iii" 50
43 } >wide_delta_$iii &&
44 {
45 test-tool genrandom "foo"$i 100 &&
46 test-tool genrandom "foo"$(( $i + 1 )) 100 &&
47 test-tool genrandom "foo"$(( $i + 2 )) 100
48 } >deep_delta_$iii &&
49 {
50 echo $iii &&
51 test-tool genrandom "$iii" 8192
52 } >file_$iii &&
53 git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
54 }
55
56 commit_and_list_objects () {
57 {
58 echo 101 &&
59 test-tool genrandom 100 8192;
60 } >file_101 &&
61 git update-index --add file_101 &&
62 tree=$(git write-tree) &&
63 commit=$(git commit-tree $tree -p HEAD</dev/null) &&
64 {
65 echo $tree &&
66 git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\) .*/\\1/"
67 } >obj-list &&
68 git reset --hard $commit
69 }
70
71 test_expect_success 'create objects' '
72 test_commit initial &&
73 for i in $(test_seq 1 5)
74 do
75 generate_objects $i
76 done &&
77 commit_and_list_objects
78 '
79
80 test_expect_success 'write midx with one v1 pack' '
81 pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
82 test_when_finished rm $objdir/pack/test-$pack.pack \
83 $objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
84 git multi-pack-index --object-dir=$objdir write &&
85 midx_read_expect 1 18 4 $objdir
86 '
87
88 midx_git_two_modes () {
89 git -c core.multiPackIndex=false $1 >expect &&
90 git -c core.multiPackIndex=true $1 >actual &&
91 test_cmp expect actual
92 }
93
94 compare_results_with_midx () {
95 MSG=$1
96 test_expect_success "check normal git operations: $MSG" '
97 midx_git_two_modes "rev-list --objects --all" &&
98 midx_git_two_modes "log --raw"
99 '
100 }
101
102 test_expect_success 'write midx with one v2 pack' '
103 git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
104 git multi-pack-index --object-dir=$objdir write &&
105 midx_read_expect 1 18 4 $objdir
106 '
107
108 compare_results_with_midx "one v2 pack"
109
110 test_expect_success 'add more objects' '
111 for i in $(test_seq 6 10)
112 do
113 generate_objects $i
114 done &&
115 commit_and_list_objects
116 '
117
118 test_expect_success 'write midx with two packs' '
119 git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
120 git multi-pack-index --object-dir=$objdir write &&
121 midx_read_expect 2 34 4 $objdir
122 '
123
124 compare_results_with_midx "two packs"
125
126 test_expect_success 'add more packs' '
127 for j in $(test_seq 11 20)
128 do
129 generate_objects $j &&
130 commit_and_list_objects &&
131 git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
132 done
133 '
134
135 compare_results_with_midx "mixed mode (two packs + extra)"
136
137 test_expect_success 'write midx with twelve packs' '
138 git multi-pack-index --object-dir=$objdir write &&
139 midx_read_expect 12 74 4 $objdir
140 '
141
142 compare_results_with_midx "twelve packs"
143
144 # usage: corrupt_data <file> <pos> [<data>]
145 corrupt_data () {
146 file=$1
147 pos=$2
148 data="${3:-\0}"
149 printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
150 }
151
152 # Force 64-bit offsets by manipulating the idx file.
153 # This makes the IDX file _incorrect_ so be careful to clean up after!
154 test_expect_success 'force some 64-bit offsets with pack-objects' '
155 mkdir objects64 &&
156 mkdir objects64/pack &&
157 for i in $(test_seq 1 11)
158 do
159 generate_objects 11
160 done &&
161 commit_and_list_objects &&
162 pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
163 idx64=objects64/pack/test-64-$pack64.idx &&
164 chmod u+w $idx64 &&
165 corrupt_data $idx64 2999 "\02" &&
166 midx64=$(git multi-pack-index --object-dir=objects64 write) &&
167 midx_read_expect 1 63 5 objects64 " large-offsets"
168 '
169
170 test_done