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Diffstat (limited to 't/t1450-fsck.sh')
| -rwxr-xr-x | t/t1450-fsck.sh | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh index 33a51c9..adf0bc8 100755 --- a/t/t1450-fsck.sh +++ b/t/t1450-fsck.sh @@ -689,4 +689,35 @@ test_expect_success 'bogus head does not fallback to all heads' ' ! grep $blob out ' +# Corrupt the checksum on the index. +# Add 1 to the last byte in the SHA. +corrupt_index_checksum () { + perl -w -e ' + use Fcntl ":seek"; + open my $fh, "+<", ".git/index" or die "open: $!"; + binmode $fh; + seek $fh, -1, SEEK_END or die "seek: $!"; + read $fh, my $in_byte, 1 or die "read: $!"; + + $in_value = unpack("C", $in_byte); + $out_value = ($in_value + 1) & 255; + + $out_byte = pack("C", $out_value); + + seek $fh, -1, SEEK_END or die "seek: $!"; + print $fh $out_byte; + close $fh or die "close: $!"; + ' +} + +# Corrupt the checksum on the index and then +# verify that only fsck notices. +test_expect_success 'detect corrupt index file in fsck' ' + cp .git/index .git/index.backup && + test_when_finished "mv .git/index.backup .git/index" && + corrupt_index_checksum && + test_must_fail git fsck --cache 2>errors && + grep "bad index file" errors +' + test_done |