diff options
Diffstat (limited to 't/t5318-commit-graph.sh')
| -rwxr-xr-x | t/t5318-commit-graph.sh | 251 |
1 files changed, 249 insertions, 2 deletions
diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh index a380419..3c1ffad 100755 --- a/t/t5318-commit-graph.sh +++ b/t/t5318-commit-graph.sh @@ -11,6 +11,11 @@ test_expect_success 'setup full repo' ' objdir=".git/objects" ' +test_expect_success 'verify graph with no graph file' ' + cd "$TRASH_DIRECTORY/full" && + git commit-graph verify +' + test_expect_success 'write graph with no packs' ' cd "$TRASH_DIRECTORY/full" && git commit-graph write --object-dir . && @@ -28,8 +33,8 @@ test_expect_success 'create commits and repack' ' ' graph_git_two_modes() { - git -c core.graph=true $1 >output - git -c core.graph=false $1 >expect + git -c core.commitGraph=true $1 >output + git -c core.commitGraph=false $1 >expect test_cmp output expect } @@ -200,6 +205,16 @@ test_expect_success 'build graph from commits with append' ' graph_git_behavior 'append graph, commit 8 vs merge 1' full commits/8 merge/1 graph_git_behavior 'append graph, commit 8 vs merge 2' full commits/8 merge/2 +test_expect_success 'build graph using --reachable' ' + cd "$TRASH_DIRECTORY/full" && + git commit-graph write --reachable && + test_path_is_file $objdir/info/commit-graph && + graph_read_expect "11" "large_edges" +' + +graph_git_behavior 'append graph, commit 8 vs merge 1' full commits/8 merge/1 +graph_git_behavior 'append graph, commit 8 vs merge 2' full commits/8 merge/2 + test_expect_success 'setup bare repo' ' cd "$TRASH_DIRECTORY" && git clone --bare --no-local full bare && @@ -221,4 +236,236 @@ test_expect_success 'write graph in bare repo' ' graph_git_behavior 'bare repo with graph, commit 8 vs merge 1' bare commits/8 merge/1 graph_git_behavior 'bare repo with graph, commit 8 vs merge 2' bare commits/8 merge/2 +test_expect_success 'perform fast-forward merge in full repo' ' + cd "$TRASH_DIRECTORY/full" && + git checkout -b merge-5-to-8 commits/5 && + git merge commits/8 && + git show-ref -s merge-5-to-8 >output && + git show-ref -s commits/8 >expect && + test_cmp expect output +' + +test_expect_success 'check that gc computes commit-graph' ' + cd "$TRASH_DIRECTORY/full" && + git commit --allow-empty -m "blank" && + git commit-graph write --reachable && + cp $objdir/info/commit-graph commit-graph-before-gc && + git reset --hard HEAD~1 && + git config gc.writeCommitGraph true && + git gc && + cp $objdir/info/commit-graph commit-graph-after-gc && + ! test_cmp_bin commit-graph-before-gc commit-graph-after-gc && + git commit-graph write --reachable && + test_cmp_bin commit-graph-after-gc $objdir/info/commit-graph +' + +# the verify tests below expect the commit-graph to contain +# exactly the commits reachable from the commits/8 branch. +# If the file changes the set of commits in the list, then the +# offsets into the binary file will result in different edits +# and the tests will likely break. + +test_expect_success 'git commit-graph verify' ' + cd "$TRASH_DIRECTORY/full" && + git rev-parse commits/8 | git commit-graph write --stdin-commits && + 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 +GRAPH_CHUNK_LOOKUP_OFFSET=8 +GRAPH_CHUNK_LOOKUP_WIDTH=12 +GRAPH_CHUNK_LOOKUP_ROWS=5 +GRAPH_BYTE_OID_FANOUT_ID=$GRAPH_CHUNK_LOOKUP_OFFSET +GRAPH_BYTE_OID_LOOKUP_ID=$(($GRAPH_CHUNK_LOOKUP_OFFSET + \ + 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 +# by inserting the data, then runs 'git commit-graph verify' +# and places the output in the file 'err'. Test 'err' for +# the given string. +corrupt_graph_and_verify() { + pos=$1 + data="${2:-\0}" + grepstr=$3 + cd "$TRASH_DIRECTORY/full" && + 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 && + test_must_fail git commit-graph verify 2>test_err && + grep -v "^+" test_err >err + test_i18ngrep "$grepstr" err +} + +test_expect_success 'detect bad signature' ' + corrupt_graph_and_verify 0 "\0" \ + "graph signature" +' + +test_expect_success 'detect bad version' ' + corrupt_graph_and_verify $GRAPH_BYTE_VERSION "\02" \ + "graph version" +' + +test_expect_success 'detect bad hash version' ' + corrupt_graph_and_verify $GRAPH_BYTE_HASH "\02" \ + "hash version" +' + +test_expect_success 'detect low chunk count' ' + corrupt_graph_and_verify $GRAPH_BYTE_CHUNK_COUNT "\02" \ + "missing the .* chunk" +' + +test_expect_success 'detect missing OID fanout chunk' ' + corrupt_graph_and_verify $GRAPH_BYTE_OID_FANOUT_ID "\0" \ + "missing the OID Fanout chunk" +' + +test_expect_success 'detect missing OID lookup chunk' ' + corrupt_graph_and_verify $GRAPH_BYTE_OID_LOOKUP_ID "\0" \ + "missing the OID Lookup chunk" +' + +test_expect_success 'detect missing commit data chunk' ' + corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_DATA_ID "\0" \ + "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 $GRAPH_BYTE_FOOTER "\00" \ + "incorrect checksum" && + test_must_fail git fsck +' + +test_expect_success 'setup non-the_repository tests' ' + rm -rf repo && + git init repo && + test_commit -C repo one && + test_commit -C repo two && + git -C repo config core.commitGraph true && + git -C repo rev-parse two | \ + git -C repo commit-graph write --stdin-commits +' + +test_expect_success 'parse_commit_in_graph works for non-the_repository' ' + test-tool repository parse_commit_in_graph \ + repo/.git repo "$(git -C repo rev-parse two)" >actual && + { + git -C repo log --pretty=format:"%ct " -1 && + git -C repo rev-parse one + } >expect && + test_cmp expect actual && + + test-tool repository parse_commit_in_graph \ + repo/.git repo "$(git -C repo rev-parse one)" >actual && + git -C repo log --pretty="%ct" -1 one >expect && + test_cmp expect actual +' + +test_expect_success 'get_commit_tree_in_graph works for non-the_repository' ' + test-tool repository get_commit_tree_in_graph \ + repo/.git repo "$(git -C repo rev-parse two)" >actual && + git -C repo rev-parse two^{tree} >expect && + test_cmp expect actual && + + test-tool repository get_commit_tree_in_graph \ + repo/.git repo "$(git -C repo rev-parse one)" >actual && + git -C repo rev-parse one^{tree} >expect && + test_cmp expect actual +' + test_done |