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commit-graph: test for corrupted octopus edge

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The commit-graph file has an extra chunk to store the parent int-ids for
parents beyond the first parent for octopus merges. Our test repo has a
single octopus merge that we can manipulate to demonstrate the 'verify'
subcommand detects incorrect values in that chunk.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee 2018-06-27 09:24:41 -04:00 committed by Junio C Hamano
parent 88968ebf86
commit 437787ae1b
1 changed files with 10 additions and 0 deletions
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10
t/t5318-commit-graph.sh
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@ -248,6 +248,7 @@ test_expect_success 'git commit-graph verify' '
'
NUM_COMMITS=9
NUM_OCTOPUS_EDGES=2
HASH_LEN=20
GRAPH_BYTE_VERSION=4
GRAPH_BYTE_HASH=5
@ -274,6 +275,10 @@ 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))
# usage: corrupt_graph_and_verify <position> <data> <string>
# Manipulates the commit-graph file at the position
@ -383,4 +388,9 @@ test_expect_success 'detect incorrect commit date' '
"commit date"
'
test_expect_success 'detect incorrect parent for octopus merge' '
corrupt_graph_and_verify $GRAPH_BYTE_OCTOPUS "\01" \
"invalid parent"
'
test_done