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t5300, t5302, t5303: Do not use /dev/zero

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We do not have /dev/zero on Windows. This replaces it by data generated
with printf, perl, or echo. Most of the cases do not depend on that the
data is a stream of zero bytes, so we use something printable; nor is an
unlimited stream of data needed, so we produce only as many bytes as the
test cases need.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
This commit is contained in:
Johannes Sixt 2008-11-17 09:21:30 +01:00
parent 0aaaef7b0f
commit b689ccf6c9
3 changed files with 16 additions and 15 deletions
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17
t/t5300-pack-object.sh
View file

@ -13,11 +13,10 @@ TRASH=`pwd`
test_expect_success \
'setup' \
'rm -f .git/index*
for i in a b c
do
dd if=/dev/zero bs=4k count=1 | perl -pe "y/\\000/$i/" >$i &&
git update-index --add $i || return 1
done &&
perl -e "print \"a\" x 4096;" > a &&
perl -e "print \"b\" x 4096;" > b &&
perl -e "print \"c\" x 4096;" > c &&
git update-index --add a b c &&
cat c >d && echo foo >>d && git update-index --add d &&
tree=`git write-tree` &&
commit=`git commit-tree $tree </dev/null` && {
@ -221,7 +220,7 @@ test_expect_success \
test_expect_success \
'verify-pack catches a corrupted pack signature' \
'cat test-1-${packname_1}.pack >test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=2 &&
echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=2 &&
if git verify-pack test-3.idx
then false
else :;
@ -230,7 +229,7 @@ test_expect_success \
test_expect_success \
'verify-pack catches a corrupted pack version' \
'cat test-1-${packname_1}.pack >test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=7 &&
echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=7 &&
if git verify-pack test-3.idx
then false
else :;
@ -239,7 +238,7 @@ test_expect_success \
test_expect_success \
'verify-pack catches a corrupted type/size of the 1st packed object data' \
'cat test-1-${packname_1}.pack >test-3.pack &&
dd if=/dev/zero of=test-3.pack count=1 bs=1 conv=notrunc seek=12 &&
echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=12 &&
if git verify-pack test-3.idx
then false
else :;
@ -250,7 +249,7 @@ test_expect_success \
'l=`wc -c <test-3.idx` &&
l=`expr $l - 20` &&
cat test-1-${packname_1}.pack >test-3.pack &&
dd if=/dev/zero of=test-3.idx count=20 bs=1 conv=notrunc seek=$l &&
printf "%20s" "" | dd of=test-3.idx count=20 bs=1 conv=notrunc seek=$l &&
if git verify-pack test-3.pack
then false
else :;

2
t/t5302-pack-index.sh
View file

@ -208,7 +208,7 @@ test_expect_success \
obj=`git hash-object file_001` &&
nr=`index_obj_nr ".git/objects/pack/pack-${pack1}.idx" $obj` &&
chmod +w ".git/objects/pack/pack-${pack1}.idx" &&
dd if=/dev/zero of=".git/objects/pack/pack-${pack1}.idx" conv=notrunc \
printf xxxx | dd of=".git/objects/pack/pack-${pack1}.idx" conv=notrunc \
bs=1 count=4 seek=$((8 + 256 * 4 + `wc -l <obj-list` * 20 + $nr * 4)) &&
( while read obj
do git cat-file -p $obj >/dev/null || exit 1

12
t/t5303-pack-corruption-resilience.sh
View file

@ -55,6 +55,8 @@ do_corrupt_object() {
test_must_fail git verify-pack ${pack}.pack
}
printf '\0' > zero
test_expect_success \
'initial setup validation' \
'create_test_files &&
@ -66,7 +68,7 @@ test_expect_success \
test_expect_success \
'create corruption in header of first object' \
'do_corrupt_object $blob_1 0 < /dev/zero &&
'do_corrupt_object $blob_1 0 < zero &&
test_must_fail git cat-file blob $blob_1 > /dev/null &&
test_must_fail git cat-file blob $blob_2 > /dev/null &&
test_must_fail git cat-file blob $blob_3 > /dev/null'
@ -125,7 +127,7 @@ test_expect_success \
'create corruption in header of first delta' \
'create_new_pack &&
git prune-packed &&
do_corrupt_object $blob_2 0 < /dev/zero &&
do_corrupt_object $blob_2 0 < zero &&
git cat-file blob $blob_1 > /dev/null &&
test_must_fail git cat-file blob $blob_2 > /dev/null &&
test_must_fail git cat-file blob $blob_3 > /dev/null'
@ -180,7 +182,7 @@ test_expect_success \
'corruption in delta base reference of first delta (OBJ_REF_DELTA)' \
'create_new_pack &&
git prune-packed &&
do_corrupt_object $blob_2 2 < /dev/zero &&
do_corrupt_object $blob_2 2 < zero &&
git cat-file blob $blob_1 > /dev/null &&
test_must_fail git cat-file blob $blob_2 > /dev/null &&
test_must_fail git cat-file blob $blob_3 > /dev/null'
@ -207,7 +209,7 @@ test_expect_success \
'corruption #0 in delta base reference of first delta (OBJ_OFS_DELTA)' \
'create_new_pack --delta-base-offset &&
git prune-packed &&
do_corrupt_object $blob_2 2 < /dev/zero &&
do_corrupt_object $blob_2 2 < zero &&
git cat-file blob $blob_1 > /dev/null &&
test_must_fail git cat-file blob $blob_2 > /dev/null &&
test_must_fail git cat-file blob $blob_3 > /dev/null'
@ -259,7 +261,7 @@ test_expect_success \
test_expect_success \
'... and a redundant pack allows for full recovery too' \
'do_corrupt_object $blob_2 2 < /dev/zero &&
'do_corrupt_object $blob_2 2 < zero &&
git cat-file blob $blob_1 > /dev/null &&
test_must_fail git cat-file blob $blob_2 > /dev/null &&
test_must_fail git cat-file blob $blob_3 > /dev/null &&