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t5300: avoid false failures.

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Johannes found that the test has 1/256 chance of falsely
producing an uncorrupted idx file, causing the check to detect
corruption fail.  Now we have 1/2^160 chance of false failure
;-).

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2005-12-26 18:23:41 -08:00
parent 7e4a2a8483
commit c97451ce09
1 changed files with 7 additions and 1 deletions
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8
t/t5300-pack-object.sh
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@ -142,6 +142,7 @@ test_expect_success \
else :;
fi &&
: PACK_SIGNATURE &&
cp test-1-${packname_1}.pack test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=2 &&
if git-verify-pack test-3.idx
@ -149,6 +150,7 @@ test_expect_success \
else :;
fi &&
: PACK_VERSION &&
cp test-1-${packname_1}.pack test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=7 &&
if git-verify-pack test-3.idx
@ -156,6 +158,7 @@ test_expect_success \
else :;
fi &&
: TYPE/SIZE byte of the first packed object data &&
cp test-1-${packname_1}.pack test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=12 &&
if git-verify-pack test-3.idx
@ -163,8 +166,11 @@ test_expect_success \
else :;
fi &&
: sum of the index file itself &&
l=`wc -c <test-3.idx` &&
l=`expr "$l" - 20` &&
cp test-1-${packname_1}.pack test-3.pack &&
dd if=/dev/zero of=test-3.idx count=1 bs=1 conv=notrunc seek=1200 &&
dd if=/dev/zero of=test-3.idx count=20 bs=1 conv=notrunc seek=$l &&
if git-verify-pack test-3.pack
then false
else :;