GRAPH_BYTE_OCTOPUS=$(($GRAPH_OCTOPUS_DATA_OFFSET + 4))
GRAPH_BYTE_FOOTER=$(($GRAPH_OCTOPUS_DATA_OFFSET + 4 * $NUM_OCTOPUS_EDGES))
-# usage: corrupt_graph_and_verify <position> <data> <string>
+# usage: corrupt_graph_and_verify <position> <data> <string> [<zero_pos>]
# Manipulates the commit-graph file at the position
-# by inserting the data, then runs 'git commit-graph verify'
+# by inserting the data, optionally zeroing the file
+# starting at <zero_pos>, then runs 'git commit-graph verify'
# and places the output in the file 'err'. Test 'err' for
# the given string.
corrupt_graph_and_verify() {
data="${2:-\0}"
grepstr=$3
cd "$TRASH_DIRECTORY/full" &&
+ orig_size=$(wc -c < $objdir/info/commit-graph) &&
+ zero_pos=${4:-${orig_size}} &&
test_when_finished mv commit-graph-backup $objdir/info/commit-graph &&
cp $objdir/info/commit-graph commit-graph-backup &&
printf "$data" | dd of="$objdir/info/commit-graph" bs=1 seek="$pos" conv=notrunc &&
+ dd of="$objdir/info/commit-graph" bs=1 seek="$zero_pos" count=0 &&
+ generate_zero_bytes $(($orig_size - $zero_pos)) >>"$objdir/info/commit-graph" &&
test_must_fail git commit-graph verify 2>test_err &&
- grep -v "^+" test_err >err
+ grep -v "^+" test_err >err &&
test_i18ngrep "$grepstr" err
}
"incorrect checksum"
'
+test_expect_success 'detect incorrect chunk count' '
+ corrupt_graph_and_verify $GRAPH_BYTE_CHUNK_COUNT "\377" \
+ "chunk lookup table entry missing" $GRAPH_CHUNK_LOOKUP_OFFSET
+'
+
test_expect_success 'git fsck (checks commit-graph)' '
cd "$TRASH_DIRECTORY/full" &&
git fsck &&