1 files changed, 39 insertions, 10 deletions

diff --git a/t/t5319-multi-pack-index.sh b/t/t5319-multi-pack-index.sh
index 95e731ae52..4a4fa26f7a 100755
--- a/t/t5319-multi-pack-index.sh
+++ b/t/t5319-multi-pack-index.sh
@@ -6,27 +6,30 @@ test_description='multi-pack-indexes'
 midx_read_expect () {
 	NUM_PACKS=$1
 	NUM_OBJECTS=$2
+	NUM_CHUNKS=$3
+	OBJECT_DIR=$4
+	EXTRA_CHUNKS="$5"
 	{
 		cat <<-EOF &&
-		header: 4d494458 1 3 $NUM_PACKS
-		chunks: pack-names oid-fanout oid-lookup
+		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 pack/ | grep idx | sort
+			ls $OBJECT_DIR/pack/ | grep idx | sort
 		fi &&
-		printf "object-dir: .\n"
+		printf "object-dir: $OBJECT_DIR\n"
 	} >expect &&
-	test-tool read-midx . >actual &&
+	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
+	midx_read_expect 0 0 4 .
 '
 
 generate_objects () {
@@ -76,13 +79,13 @@ test_expect_success 'write midx with one v1 pack' '
 	pack=$(git pack-objects --index-version=1 pack/test <obj-list) &&
 	test_when_finished rm pack/test-$pack.pack pack/test-$pack.idx pack/multi-pack-index &&
 	git multi-pack-index --object-dir=. write &&
-	midx_read_expect 1 18
+	midx_read_expect 1 18 4 .
 '
 
 test_expect_success 'write midx with one v2 pack' '
 	git pack-objects --index-version=2,0x40 pack/test <obj-list &&
 	git multi-pack-index --object-dir=. write &&
-	midx_read_expect 1 18
+	midx_read_expect 1 18 4 .
 '
 
 test_expect_success 'add more objects' '
@@ -96,7 +99,7 @@ test_expect_success 'add more objects' '
 test_expect_success 'write midx with two packs' '
 	git pack-objects --index-version=1 pack/test-2 <obj-list &&
 	git multi-pack-index --object-dir=. write &&
-	midx_read_expect 2 34
+	midx_read_expect 2 34 4 .
 '
 
 test_expect_success 'add more packs' '
@@ -110,7 +113,33 @@ test_expect_success 'add more packs' '
 
 test_expect_success 'write midx with twelve packs' '
 	git multi-pack-index --object-dir=. write &&
-	midx_read_expect 12 74
+	midx_read_expect 12 74 4 .
+'
+
+# 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