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| author | René Scharfe <l.s.r@web.de> | 2015-08-22 21:06:12 +0200 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2015-08-28 08:52:10 -0700 |
| commit | 19ee29401dfc414924f335c21ef9880513f3c58d (patch) | |
| tree | a96bcdacb92c6fb851cf8619afae338cff8d4143 | |
| parent | 8545932d45c91437ac439b1a2df12cf397f71311 (diff) | |
| download | git-19ee29401dfc414924f335c21ef9880513f3c58d.tar.gz | |
t5004: test ZIP archives with many entries
A ZIP file directory has a 16-bit field for the number of entries it
contains. There are 64-bit extensions to deal with that. Demonstrate
that git archive --format=zip currently doesn't use them and instead
overflows the field.
InfoZIP's unzip doesn't care about this field and extracts all files
anyway. Software that uses the directory for presenting a filesystem
like view quickly -- notably Windows -- depends on it, but doesn't
lend itself to an automatic test case easily. Use InfoZIP's zipinfo,
which probably isn't available everywhere but at least can provides
*some* way to check this field.
To speed things up a bit create and commit only a subset of the files
and build a fake tree out of duplicates and pass that to git archive.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rwxr-xr-x | t/t5004-archive-corner-cases.sh | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/t/t5004-archive-corner-cases.sh b/t/t5004-archive-corner-cases.sh index 654addaae3..c6bd7290a3 100755 --- a/t/t5004-archive-corner-cases.sh +++ b/t/t5004-archive-corner-cases.sh @@ -115,4 +115,44 @@ test_expect_success 'archive empty subtree by direct pathspec' ' 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_failure 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 |