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-rwxr-xr-xt/t5319-multi-pack-index.sh179
1 files changed, 179 insertions, 0 deletions
diff --git a/t/t5319-multi-pack-index.sh b/t/t5319-multi-pack-index.sh
new file mode 100755
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+++ b/t/t5319-multi-pack-index.sh
@@ -0,0 +1,179 @@
+#!/bin/sh
+
+test_description='multi-pack-indexes'
+. ./test-lib.sh
+
+objdir=.git/objects
+
+midx_read_expect () {
+ NUM_PACKS=$1
+ NUM_OBJECTS=$2
+ NUM_CHUNKS=$3
+ OBJECT_DIR=$4
+ EXTRA_CHUNKS="$5"
+ {
+ cat <<-EOF &&
+ header: 4d494458 1 $NUM_CHUNKS $NUM_PACKS
+ chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
+ num_objects: $NUM_OBJECTS
+ packs:
+ EOF
+ if test $NUM_PACKS -ge 1
+ then
+ ls $OBJECT_DIR/pack/ | grep idx | sort
+ fi &&
+ printf "object-dir: $OBJECT_DIR\n"
+ } >expect &&
+ test-tool read-midx $OBJECT_DIR >actual &&
+ test_cmp expect actual
+}
+
+test_expect_success 'write midx with no packs' '
+ test_when_finished rm -f pack/multi-pack-index &&
+ git multi-pack-index --object-dir=. write &&
+ midx_read_expect 0 0 4 .
+'
+
+generate_objects () {
+ i=$1
+ iii=$(printf '%03i' $i)
+ {
+ test-tool genrandom "bar" 200 &&
+ test-tool genrandom "baz $iii" 50
+ } >wide_delta_$iii &&
+ {
+ test-tool genrandom "foo"$i 100 &&
+ test-tool genrandom "foo"$(( $i + 1 )) 100 &&
+ test-tool genrandom "foo"$(( $i + 2 )) 100
+ } >deep_delta_$iii &&
+ {
+ echo $iii &&
+ test-tool genrandom "$iii" 8192
+ } >file_$iii &&
+ git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
+}
+
+commit_and_list_objects () {
+ {
+ echo 101 &&
+ test-tool genrandom 100 8192;
+ } >file_101 &&
+ git update-index --add file_101 &&
+ tree=$(git write-tree) &&
+ commit=$(git commit-tree $tree -p HEAD</dev/null) &&
+ {
+ echo $tree &&
+ git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\) .*/\\1/"
+ } >obj-list &&
+ git reset --hard $commit
+}
+
+test_expect_success 'create objects' '
+ test_commit initial &&
+ for i in $(test_seq 1 5)
+ do
+ generate_objects $i
+ done &&
+ commit_and_list_objects
+'
+
+test_expect_success 'write midx with one v1 pack' '
+ pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
+ test_when_finished rm $objdir/pack/test-$pack.pack \
+ $objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
+ git multi-pack-index --object-dir=$objdir write &&
+ midx_read_expect 1 18 4 $objdir
+'
+
+midx_git_two_modes () {
+ git -c core.multiPackIndex=false $1 >expect &&
+ git -c core.multiPackIndex=true $1 >actual &&
+ test_cmp expect actual
+}
+
+compare_results_with_midx () {
+ MSG=$1
+ test_expect_success "check normal git operations: $MSG" '
+ midx_git_two_modes "rev-list --objects --all" &&
+ midx_git_two_modes "log --raw"
+ '
+}
+
+test_expect_success 'write midx with one v2 pack' '
+ git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
+ git multi-pack-index --object-dir=$objdir write &&
+ midx_read_expect 1 18 4 $objdir
+'
+
+compare_results_with_midx "one v2 pack"
+
+test_expect_success 'add more objects' '
+ for i in $(test_seq 6 10)
+ do
+ generate_objects $i
+ done &&
+ commit_and_list_objects
+'
+
+test_expect_success 'write midx with two packs' '
+ git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
+ git multi-pack-index --object-dir=$objdir write &&
+ midx_read_expect 2 34 4 $objdir
+'
+
+compare_results_with_midx "two packs"
+
+test_expect_success 'add more packs' '
+ for j in $(test_seq 11 20)
+ do
+ generate_objects $j &&
+ commit_and_list_objects &&
+ git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
+ done
+'
+
+compare_results_with_midx "mixed mode (two packs + extra)"
+
+test_expect_success 'write midx with twelve packs' '
+ git multi-pack-index --object-dir=$objdir write &&
+ midx_read_expect 12 74 4 $objdir
+'
+
+compare_results_with_midx "twelve packs"
+
+test_expect_success 'repack removes multi-pack-index' '
+ test_path_is_file $objdir/pack/multi-pack-index &&
+ git repack -adf &&
+ test_path_is_missing $objdir/pack/multi-pack-index
+'
+
+compare_results_with_midx "after repack"
+
+
+# usage: corrupt_data <file> <pos> [<data>]
+corrupt_data () {
+ file=$1
+ pos=$2
+ data="${3:-\0}"
+ printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
+}
+
+# Force 64-bit offsets by manipulating the idx file.
+# This makes the IDX file _incorrect_ so be careful to clean up after!
+test_expect_success 'force some 64-bit offsets with pack-objects' '
+ mkdir objects64 &&
+ mkdir objects64/pack &&
+ for i in $(test_seq 1 11)
+ do
+ generate_objects 11
+ done &&
+ commit_and_list_objects &&
+ pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
+ idx64=objects64/pack/test-64-$pack64.idx &&
+ chmod u+w $idx64 &&
+ corrupt_data $idx64 2999 "\02" &&
+ midx64=$(git multi-pack-index --object-dir=objects64 write) &&
+ midx_read_expect 1 63 5 objects64 " large-offsets"
+'
+
+test_done