check_dir extract sub
'
+ZIPINFO=zipinfo
+
+test_lazy_prereq ZIPINFO '
+ n=$("$ZIPINFO" "$TEST_DIRECTORY"/t5004/empty.zip | sed -n "2s/.* //p")
+ test "x$n" = "x0"
+'
+
+test_expect_success ZIPINFO 'zip archive with many entries' '
+ # add a directory with 256 files
+ mkdir 00 &&
+ for a in 0 1 2 3 4 5 6 7 8 9 a b c d e f
+ do
+ for b in 0 1 2 3 4 5 6 7 8 9 a b c d e f
+ do
+ : >00/$a$b
+ done
+ done &&
+ git add 00 &&
+ git commit -m "256 files in 1 directory" &&
+
+ # duplicate it to get 65536 files in 256 directories
+ subtree=$(git write-tree --prefix=00/) &&
+ for c in 0 1 2 3 4 5 6 7 8 9 a b c d e f
+ do
+ for d in 0 1 2 3 4 5 6 7 8 9 a b c d e f
+ do
+ echo "040000 tree $subtree $c$d"
+ done
+ done >tree &&
+ tree=$(git mktree <tree) &&
+
+ # zip them
+ git archive -o many.zip $tree &&
+
+ # check the number of entries in the ZIP file directory
+ expr 65536 + 256 >expect &&
+ "$ZIPINFO" many.zip | head -2 | sed -n "2s/.* //p" >actual &&
+ test_cmp expect actual
+'
+
test_done