git commit-graph verify >output
'
+NUM_COMMITS=9
+NUM_OCTOPUS_EDGES=2
+HASH_LEN=20
GRAPH_BYTE_VERSION=4
GRAPH_BYTE_HASH=5
GRAPH_BYTE_CHUNK_COUNT=6
1 * $GRAPH_CHUNK_LOOKUP_WIDTH))
GRAPH_BYTE_COMMIT_DATA_ID=$(($GRAPH_CHUNK_LOOKUP_OFFSET + \
2 * $GRAPH_CHUNK_LOOKUP_WIDTH))
+GRAPH_FANOUT_OFFSET=$(($GRAPH_CHUNK_LOOKUP_OFFSET + \
+ $GRAPH_CHUNK_LOOKUP_WIDTH * $GRAPH_CHUNK_LOOKUP_ROWS))
+GRAPH_BYTE_FANOUT1=$(($GRAPH_FANOUT_OFFSET + 4 * 4))
+GRAPH_BYTE_FANOUT2=$(($GRAPH_FANOUT_OFFSET + 4 * 255))
+GRAPH_OID_LOOKUP_OFFSET=$(($GRAPH_FANOUT_OFFSET + 4 * 256))
+GRAPH_BYTE_OID_LOOKUP_ORDER=$(($GRAPH_OID_LOOKUP_OFFSET + $HASH_LEN * 8))
+GRAPH_BYTE_OID_LOOKUP_MISSING=$(($GRAPH_OID_LOOKUP_OFFSET + $HASH_LEN * 4 + 10))
+GRAPH_COMMIT_DATA_OFFSET=$(($GRAPH_OID_LOOKUP_OFFSET + $HASH_LEN * $NUM_COMMITS))
+GRAPH_BYTE_COMMIT_TREE=$GRAPH_COMMIT_DATA_OFFSET
+GRAPH_BYTE_COMMIT_PARENT=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN))
+GRAPH_BYTE_COMMIT_EXTRA_PARENT=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 4))
+GRAPH_BYTE_COMMIT_WRONG_PARENT=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 3))
+GRAPH_BYTE_COMMIT_GENERATION=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 11))
+GRAPH_BYTE_COMMIT_DATE=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 12))
+GRAPH_COMMIT_DATA_WIDTH=$(($HASH_LEN + 16))
+GRAPH_OCTOPUS_DATA_OFFSET=$(($GRAPH_COMMIT_DATA_OFFSET + \
+ $GRAPH_COMMIT_DATA_WIDTH * $NUM_COMMITS))
+GRAPH_BYTE_OCTOPUS=$(($GRAPH_OCTOPUS_DATA_OFFSET + 4))
+GRAPH_BYTE_FOOTER=$(($GRAPH_OCTOPUS_DATA_OFFSET + 4 * $NUM_OCTOPUS_EDGES))
# usage: corrupt_graph_and_verify <position> <data> <string>
# Manipulates the commit-graph file at the position
"missing the Commit Data chunk"
'
+test_expect_success 'detect incorrect fanout' '
+ corrupt_graph_and_verify $GRAPH_BYTE_FANOUT1 "\01" \
+ "fanout value"
+'
+
+test_expect_success 'detect incorrect fanout final value' '
+ corrupt_graph_and_verify $GRAPH_BYTE_FANOUT2 "\01" \
+ "fanout value"
+'
+
+test_expect_success 'detect incorrect OID order' '
+ corrupt_graph_and_verify $GRAPH_BYTE_OID_LOOKUP_ORDER "\01" \
+ "incorrect OID order"
+'
+
+test_expect_success 'detect OID not in object database' '
+ corrupt_graph_and_verify $GRAPH_BYTE_OID_LOOKUP_MISSING "\01" \
+ "from object database"
+'
+
+test_expect_success 'detect incorrect tree OID' '
+ corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_TREE "\01" \
+ "root tree OID for commit"
+'
+
+test_expect_success 'detect incorrect parent int-id' '
+ corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_PARENT "\01" \
+ "invalid parent"
+'
+
+test_expect_success 'detect extra parent int-id' '
+ corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_EXTRA_PARENT "\00" \
+ "is too long"
+'
+
+test_expect_success 'detect wrong parent' '
+ corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_WRONG_PARENT "\01" \
+ "commit-graph parent for"
+'
+
+test_expect_success 'detect incorrect generation number' '
+ corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_GENERATION "\070" \
+ "generation for commit"
+'
+
+test_expect_success 'detect incorrect generation number' '
+ corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_GENERATION "\01" \
+ "non-zero generation number"
+'
+
+test_expect_success 'detect incorrect commit date' '
+ corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_DATE "\01" \
+ "commit date"
+'
+
+test_expect_success 'detect incorrect parent for octopus merge' '
+ corrupt_graph_and_verify $GRAPH_BYTE_OCTOPUS "\01" \
+ "invalid parent"
+'
+
+test_expect_success 'detect invalid checksum hash' '
+ corrupt_graph_and_verify $GRAPH_BYTE_FOOTER "\00" \
+ "incorrect checksum"
+'
+
+test_expect_success 'git fsck (checks commit-graph)' '
+ cd "$TRASH_DIRECTORY/full" &&
+ git fsck &&
+ corrupt_graph_and_verify $GRAPH_BYTE_FOOTER "\00" \
+ "incorrect checksum" &&
+ test_must_fail git fsck
+'
+
test_done