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-rwxr-xr-xt/t5319-multi-pack-index.sh351
1 files changed, 351 insertions, 0 deletions
diff --git a/t/t5319-multi-pack-index.sh b/t/t5319-multi-pack-index.sh
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--- /dev/null
+++ b/t/t5319-multi-pack-index.sh
@@ -0,0 +1,351 @@
+#!/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 () {
+ if [ "$2" = "sorted" ]
+ then
+ git -c core.multiPackIndex=false $1 | sort >expect &&
+ git -c core.multiPackIndex=true $1 | sort >actual
+ else
+ git -c core.multiPackIndex=false $1 >expect &&
+ git -c core.multiPackIndex=true $1 >actual
+ fi &&
+ 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" &&
+ midx_git_two_modes "count-objects --verbose" &&
+ midx_git_two_modes "cat-file --batch-all-objects --buffer --batch-check" &&
+ midx_git_two_modes "cat-file --batch-all-objects --buffer --batch-check --unsorted" sorted
+ '
+}
+
+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 $objdir
+'
+
+compare_results_with_midx "twelve packs"
+
+test_expect_success 'verify multi-pack-index success' '
+ git multi-pack-index verify --object-dir=$objdir
+'
+
+# usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
+corrupt_midx_and_verify() {
+ POS=$1 &&
+ DATA="${2:-\0}" &&
+ OBJDIR=$3 &&
+ GREPSTR="$4" &&
+ COMMAND="$5" &&
+ if test -z "$COMMAND"
+ then
+ COMMAND="git multi-pack-index verify --object-dir=$OBJDIR"
+ fi &&
+ FILE=$OBJDIR/pack/multi-pack-index &&
+ chmod a+w $FILE &&
+ test_when_finished mv midx-backup $FILE &&
+ cp $FILE midx-backup &&
+ printf "$DATA" | dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
+ test_must_fail $COMMAND 2>test_err &&
+ grep -v "^+" test_err >err &&
+ test_i18ngrep "$GREPSTR" err
+}
+
+test_expect_success 'verify bad signature' '
+ corrupt_midx_and_verify 0 "\00" $objdir \
+ "multi-pack-index signature"
+'
+
+HASH_LEN=20
+NUM_OBJECTS=74
+MIDX_BYTE_VERSION=4
+MIDX_BYTE_OID_VERSION=5
+MIDX_BYTE_CHUNK_COUNT=6
+MIDX_HEADER_SIZE=12
+MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
+MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
+MIDX_NUM_CHUNKS=5
+MIDX_CHUNK_LOOKUP_WIDTH=12
+MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
+ $MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
+MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
+MIDX_OFFSET_OID_FANOUT=$(($MIDX_OFFSET_PACKNAMES + 652))
+MIDX_OID_FANOUT_WIDTH=4
+MIDX_BYTE_OID_FANOUT_ORDER=$((MIDX_OFFSET_OID_FANOUT + 250 * $MIDX_OID_FANOUT_WIDTH + 1))
+MIDX_OFFSET_OID_LOOKUP=$(($MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
+MIDX_BYTE_OID_LOOKUP=$(($MIDX_OFFSET_OID_LOOKUP + 16 * $HASH_LEN))
+MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
+MIDX_OFFSET_WIDTH=8
+MIDX_BYTE_PACK_INT_ID=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 2))
+MIDX_BYTE_OFFSET=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 6))
+
+test_expect_success 'verify bad version' '
+ corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
+ "multi-pack-index version"
+'
+
+test_expect_success 'verify bad OID version' '
+ corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\02" $objdir \
+ "hash version"
+'
+
+test_expect_success 'verify truncated chunk count' '
+ corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
+ "missing required"
+'
+
+test_expect_success 'verify extended chunk count' '
+ corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
+ "terminating multi-pack-index chunk id appears earlier than expected"
+'
+
+test_expect_success 'verify missing required chunk' '
+ corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
+ "missing required"
+'
+
+test_expect_success 'verify invalid chunk offset' '
+ corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
+ "invalid chunk offset (too large)"
+'
+
+test_expect_success 'verify packnames out of order' '
+ corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
+ "pack names out of order"
+'
+
+test_expect_success 'verify packnames out of order' '
+ corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
+ "failed to load pack"
+'
+
+test_expect_success 'verify oid fanout out of order' '
+ corrupt_midx_and_verify $MIDX_BYTE_OID_FANOUT_ORDER "\01" $objdir \
+ "oid fanout out of order"
+'
+
+test_expect_success 'verify oid lookup out of order' '
+ corrupt_midx_and_verify $MIDX_BYTE_OID_LOOKUP "\00" $objdir \
+ "oid lookup out of order"
+'
+
+test_expect_success 'verify incorrect pack-int-id' '
+ corrupt_midx_and_verify $MIDX_BYTE_PACK_INT_ID "\07" $objdir \
+ "bad pack-int-id"
+'
+
+test_expect_success 'verify incorrect offset' '
+ corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
+ "incorrect object offset"
+'
+
+test_expect_success 'git-fsck incorrect offset' '
+ corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
+ "incorrect object offset" \
+ "git -c core.multipackindex=true fsck"
+'
+
+test_expect_success 'repack removes multi-pack-index' '
+ test_path_is_file $objdir/pack/multi-pack-index &&
+ GIT_TEST_MULTI_PACK_INDEX=0 git repack -adf &&
+ test_path_is_missing $objdir/pack/multi-pack-index
+'
+
+compare_results_with_midx "after repack"
+
+test_expect_success 'multi-pack-index and pack-bitmap' '
+ git -c repack.writeBitmaps=true repack -ad &&
+ git multi-pack-index write &&
+ git rev-list --test-bitmap HEAD
+'
+
+test_expect_success 'multi-pack-index and alternates' '
+ git init --bare alt.git &&
+ echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
+ echo content1 >file1 &&
+ altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
+ git cat-file blob $altblob &&
+ git rev-list --all
+'
+
+compare_results_with_midx "with alternate (local midx)"
+
+test_expect_success 'multi-pack-index in an alternate' '
+ mv .git/objects/pack/* alt.git/objects/pack &&
+ test_commit add_local_objects &&
+ git repack --local &&
+ git multi-pack-index write &&
+ midx_read_expect 1 3 4 $objdir &&
+ git reset --hard HEAD~1 &&
+ rm -f .git/objects/pack/*
+'
+
+compare_results_with_midx "with alternate (remote midx)"
+
+# 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_expect_success 'verify multi-pack-index with 64-bit offsets' '
+ git multi-pack-index verify --object-dir=objects64
+'
+
+NUM_OBJECTS=63
+MIDX_OFFSET_OID_FANOUT=$((MIDX_OFFSET_PACKNAMES + 54))
+MIDX_OFFSET_OID_LOOKUP=$((MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
+MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
+MIDX_OFFSET_LARGE_OFFSETS=$(($MIDX_OFFSET_OBJECT_OFFSETS + $NUM_OBJECTS * $MIDX_OFFSET_WIDTH))
+MIDX_BYTE_LARGE_OFFSET=$(($MIDX_OFFSET_LARGE_OFFSETS + 3))
+
+test_expect_success 'verify incorrect 64-bit offset' '
+ corrupt_midx_and_verify $MIDX_BYTE_LARGE_OFFSET "\07" objects64 \
+ "incorrect object offset"
+'
+
+test_done