git.oblomov.eu Git - git/blob - t/t5318-commit-graph.sh

   1 #!/bin/sh
   2
   3 test_description='commit graph'
   4 . ./test-lib.sh
   5
   6 GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS=0
   7
   8 test_expect_success 'setup full repo' '
   9         mkdir full &&
  10         cd "$TRASH_DIRECTORY/full" &&
  11         git init &&
  12         git config core.commitGraph true &&
  13         objdir=".git/objects" &&
  14         test_oid_init
  15 '
  16
  17 test_expect_success 'verify graph with no graph file' '
  18         cd "$TRASH_DIRECTORY/full" &&
  19         git commit-graph verify
  20 '
  21
  22 test_expect_success 'write graph with no packs' '
  23         cd "$TRASH_DIRECTORY/full" &&
  24         git commit-graph write --object-dir $objdir &&
  25         test_path_is_missing $objdir/info/commit-graph
  26 '
  27
  28 test_expect_success 'exit with correct error on bad input to --stdin-packs' '
  29         cd "$TRASH_DIRECTORY/full" &&
  30         echo doesnotexist >in &&
  31         test_expect_code 1 git commit-graph write --stdin-packs <in 2>stderr &&
  32         test_i18ngrep "error adding pack" stderr
  33 '
  34
  35 test_expect_success 'create commits and repack' '
  36         cd "$TRASH_DIRECTORY/full" &&
  37         for i in $(test_seq 3)
  38         do
  39                 test_commit $i &&
  40                 git branch commits/$i
  41         done &&
  42         git repack
  43 '
  44
  45 graph_git_two_modes() {
  46         git -c core.commitGraph=true $1 >output
  47         git -c core.commitGraph=false $1 >expect
  48         test_cmp expect output
  49 }
  50
  51 graph_git_behavior() {
  52         MSG=$1
  53         DIR=$2
  54         BRANCH=$3
  55         COMPARE=$4
  56         test_expect_success "check normal git operations: $MSG" '
  57                 cd "$TRASH_DIRECTORY/$DIR" &&
  58                 graph_git_two_modes "log --oneline $BRANCH" &&
  59                 graph_git_two_modes "log --topo-order $BRANCH" &&
  60                 graph_git_two_modes "log --graph $COMPARE..$BRANCH" &&
  61                 graph_git_two_modes "branch -vv" &&
  62                 graph_git_two_modes "merge-base -a $BRANCH $COMPARE"
  63         '
  64 }
  65
  66 graph_git_behavior 'no graph' full commits/3 commits/1
  67
  68 graph_read_expect() {
  69         OPTIONAL=""
  70         NUM_CHUNKS=3
  71         if test ! -z $2
  72         then
  73                 OPTIONAL=" $2"
  74                 NUM_CHUNKS=$((3 + $(echo "$2" | wc -w)))
  75         fi
  76         cat >expect <<- EOF
  77         header: 43475048 1 1 $NUM_CHUNKS 0
  78         num_commits: $1
  79         chunks: oid_fanout oid_lookup commit_metadata$OPTIONAL
  80         EOF
  81         test-tool read-graph >output &&
  82         test_cmp expect output
  83 }
  84
  85 test_expect_success 'exit with correct error on bad input to --stdin-commits' '
  86         cd "$TRASH_DIRECTORY/full" &&
  87         # invalid, non-hex OID
  88         echo HEAD >in &&
  89         test_expect_code 1 git commit-graph write --stdin-commits <in 2>stderr &&
  90         test_i18ngrep "unexpected non-hex object ID: HEAD" stderr &&
  91         # non-existent OID
  92         echo $ZERO_OID >in &&
  93         test_expect_code 1 git commit-graph write --stdin-commits <in 2>stderr &&
  94         test_i18ngrep "invalid object" stderr &&
  95         # valid commit and tree OID
  96         git rev-parse HEAD HEAD^{tree} >in &&
  97         git commit-graph write --stdin-commits <in &&
  98         graph_read_expect 3
  99 '
 100
 101 test_expect_success 'write graph' '
 102         cd "$TRASH_DIRECTORY/full" &&
 103         git commit-graph write &&
 104         test_path_is_file $objdir/info/commit-graph &&
 105         graph_read_expect "3"
 106 '
 107
 108 graph_git_behavior 'graph exists' full commits/3 commits/1
 109
 110 test_expect_success 'Add more commits' '
 111         cd "$TRASH_DIRECTORY/full" &&
 112         git reset --hard commits/1 &&
 113         for i in $(test_seq 4 5)
 114         do
 115                 test_commit $i &&
 116                 git branch commits/$i
 117         done &&
 118         git reset --hard commits/2 &&
 119         for i in $(test_seq 6 7)
 120         do
 121                 test_commit $i &&
 122                 git branch commits/$i
 123         done &&
 124         git reset --hard commits/2 &&
 125         git merge commits/4 &&
 126         git branch merge/1 &&
 127         git reset --hard commits/4 &&
 128         git merge commits/6 &&
 129         git branch merge/2 &&
 130         git reset --hard commits/3 &&
 131         git merge commits/5 commits/7 &&
 132         git branch merge/3 &&
 133         git repack
 134 '
 135
 136 test_expect_success 'commit-graph write progress off for redirected stderr' '
 137         cd "$TRASH_DIRECTORY/full" &&
 138         git commit-graph write 2>err &&
 139         test_line_count = 0 err
 140 '
 141
 142 test_expect_success 'commit-graph write force progress on for stderr' '
 143         cd "$TRASH_DIRECTORY/full" &&
 144         GIT_PROGRESS_DELAY=0 git commit-graph write --progress 2>err &&
 145         test_file_not_empty err
 146 '
 147
 148 test_expect_success 'commit-graph write with the --no-progress option' '
 149         cd "$TRASH_DIRECTORY/full" &&
 150         git commit-graph write --no-progress 2>err &&
 151         test_line_count = 0 err
 152 '
 153
 154 test_expect_success 'commit-graph verify progress off for redirected stderr' '
 155         cd "$TRASH_DIRECTORY/full" &&
 156         git commit-graph verify 2>err &&
 157         test_line_count = 0 err
 158 '
 159
 160 test_expect_success 'commit-graph verify force progress on for stderr' '
 161         cd "$TRASH_DIRECTORY/full" &&
 162         GIT_PROGRESS_DELAY=0 git commit-graph verify --progress 2>err &&
 163         test_file_not_empty err
 164 '
 165
 166 test_expect_success 'commit-graph verify with the --no-progress option' '
 167         cd "$TRASH_DIRECTORY/full" &&
 168         git commit-graph verify --no-progress 2>err &&
 169         test_line_count = 0 err
 170 '
 171
 172 # Current graph structure:
 173 #
 174 #   __M3___
 175 #  /   |   \
 176 # 3 M1 5 M2 7
 177 # |/  \|/  \|
 178 # 2    4    6
 179 # |___/____/
 180 # 1
 181
 182 test_expect_success 'write graph with merges' '
 183         cd "$TRASH_DIRECTORY/full" &&
 184         git commit-graph write &&
 185         test_path_is_file $objdir/info/commit-graph &&
 186         graph_read_expect "10" "extra_edges"
 187 '
 188
 189 graph_git_behavior 'merge 1 vs 2' full merge/1 merge/2
 190 graph_git_behavior 'merge 1 vs 3' full merge/1 merge/3
 191 graph_git_behavior 'merge 2 vs 3' full merge/2 merge/3
 192
 193 test_expect_success 'Add one more commit' '
 194         cd "$TRASH_DIRECTORY/full" &&
 195         test_commit 8 &&
 196         git branch commits/8 &&
 197         ls $objdir/pack | grep idx >existing-idx &&
 198         git repack &&
 199         ls $objdir/pack| grep idx | grep -v -f existing-idx >new-idx
 200 '
 201
 202 # Current graph structure:
 203 #
 204 #      8
 205 #      |
 206 #   __M3___
 207 #  /   |   \
 208 # 3 M1 5 M2 7
 209 # |/  \|/  \|
 210 # 2    4    6
 211 # |___/____/
 212 # 1
 213
 214 graph_git_behavior 'mixed mode, commit 8 vs merge 1' full commits/8 merge/1
 215 graph_git_behavior 'mixed mode, commit 8 vs merge 2' full commits/8 merge/2
 216
 217 test_expect_success 'write graph with new commit' '
 218         cd "$TRASH_DIRECTORY/full" &&
 219         git commit-graph write &&
 220         test_path_is_file $objdir/info/commit-graph &&
 221         graph_read_expect "11" "extra_edges"
 222 '
 223
 224 graph_git_behavior 'full graph, commit 8 vs merge 1' full commits/8 merge/1
 225 graph_git_behavior 'full graph, commit 8 vs merge 2' full commits/8 merge/2
 226
 227 test_expect_success 'write graph with nothing new' '
 228         cd "$TRASH_DIRECTORY/full" &&
 229         git commit-graph write &&
 230         test_path_is_file $objdir/info/commit-graph &&
 231         graph_read_expect "11" "extra_edges"
 232 '
 233
 234 graph_git_behavior 'cleared graph, commit 8 vs merge 1' full commits/8 merge/1
 235 graph_git_behavior 'cleared graph, commit 8 vs merge 2' full commits/8 merge/2
 236
 237 test_expect_success 'build graph from latest pack with closure' '
 238         cd "$TRASH_DIRECTORY/full" &&
 239         cat new-idx | git commit-graph write --stdin-packs &&
 240         test_path_is_file $objdir/info/commit-graph &&
 241         graph_read_expect "9" "extra_edges"
 242 '
 243
 244 graph_git_behavior 'graph from pack, commit 8 vs merge 1' full commits/8 merge/1
 245 graph_git_behavior 'graph from pack, commit 8 vs merge 2' full commits/8 merge/2
 246
 247 test_expect_success 'build graph from commits with closure' '
 248         cd "$TRASH_DIRECTORY/full" &&
 249         git tag -a -m "merge" tag/merge merge/2 &&
 250         git rev-parse tag/merge >commits-in &&
 251         git rev-parse merge/1 >>commits-in &&
 252         cat commits-in | git commit-graph write --stdin-commits &&
 253         test_path_is_file $objdir/info/commit-graph &&
 254         graph_read_expect "6"
 255 '
 256
 257 graph_git_behavior 'graph from commits, commit 8 vs merge 1' full commits/8 merge/1
 258 graph_git_behavior 'graph from commits, commit 8 vs merge 2' full commits/8 merge/2
 259
 260 test_expect_success 'build graph from commits with append' '
 261         cd "$TRASH_DIRECTORY/full" &&
 262         git rev-parse merge/3 | git commit-graph write --stdin-commits --append &&
 263         test_path_is_file $objdir/info/commit-graph &&
 264         graph_read_expect "10" "extra_edges"
 265 '
 266
 267 graph_git_behavior 'append graph, commit 8 vs merge 1' full commits/8 merge/1
 268 graph_git_behavior 'append graph, commit 8 vs merge 2' full commits/8 merge/2
 269
 270 test_expect_success 'build graph using --reachable' '
 271         cd "$TRASH_DIRECTORY/full" &&
 272         git commit-graph write --reachable &&
 273         test_path_is_file $objdir/info/commit-graph &&
 274         graph_read_expect "11" "extra_edges"
 275 '
 276
 277 graph_git_behavior 'append graph, commit 8 vs merge 1' full commits/8 merge/1
 278 graph_git_behavior 'append graph, commit 8 vs merge 2' full commits/8 merge/2
 279
 280 test_expect_success 'setup bare repo' '
 281         cd "$TRASH_DIRECTORY" &&
 282         git clone --bare --no-local full bare &&
 283         cd bare &&
 284         git config core.commitGraph true &&
 285         baredir="./objects"
 286 '
 287
 288 graph_git_behavior 'bare repo, commit 8 vs merge 1' bare commits/8 merge/1
 289 graph_git_behavior 'bare repo, commit 8 vs merge 2' bare commits/8 merge/2
 290
 291 test_expect_success 'write graph in bare repo' '
 292         cd "$TRASH_DIRECTORY/bare" &&
 293         git commit-graph write &&
 294         test_path_is_file $baredir/info/commit-graph &&
 295         graph_read_expect "11" "extra_edges"
 296 '
 297
 298 graph_git_behavior 'bare repo with graph, commit 8 vs merge 1' bare commits/8 merge/1
 299 graph_git_behavior 'bare repo with graph, commit 8 vs merge 2' bare commits/8 merge/2
 300
 301 test_expect_success 'perform fast-forward merge in full repo' '
 302         cd "$TRASH_DIRECTORY/full" &&
 303         git checkout -b merge-5-to-8 commits/5 &&
 304         git merge commits/8 &&
 305         git show-ref -s merge-5-to-8 >output &&
 306         git show-ref -s commits/8 >expect &&
 307         test_cmp expect output
 308 '
 309
 310 test_expect_success 'check that gc computes commit-graph' '
 311         cd "$TRASH_DIRECTORY/full" &&
 312         git commit --allow-empty -m "blank" &&
 313         git commit-graph write --reachable &&
 314         cp $objdir/info/commit-graph commit-graph-before-gc &&
 315         git reset --hard HEAD~1 &&
 316         git config gc.writeCommitGraph true &&
 317         git gc &&
 318         cp $objdir/info/commit-graph commit-graph-after-gc &&
 319         ! test_cmp_bin commit-graph-before-gc commit-graph-after-gc &&
 320         git commit-graph write --reachable &&
 321         test_cmp_bin commit-graph-after-gc $objdir/info/commit-graph
 322 '
 323
 324 test_expect_success 'replace-objects invalidates commit-graph' '
 325         cd "$TRASH_DIRECTORY" &&
 326         test_when_finished rm -rf replace &&
 327         git clone full replace &&
 328         (
 329                 cd replace &&
 330                 git commit-graph write --reachable &&
 331                 test_path_is_file .git/objects/info/commit-graph &&
 332                 git replace HEAD~1 HEAD~2 &&
 333                 git -c core.commitGraph=false log >expect &&
 334                 git -c core.commitGraph=true log >actual &&
 335                 test_cmp expect actual &&
 336                 git commit-graph write --reachable &&
 337                 git -c core.commitGraph=false --no-replace-objects log >expect &&
 338                 git -c core.commitGraph=true --no-replace-objects log >actual &&
 339                 test_cmp expect actual &&
 340                 rm -rf .git/objects/info/commit-graph &&
 341                 git commit-graph write --reachable &&
 342                 test_path_is_file .git/objects/info/commit-graph
 343         )
 344 '
 345
 346 test_expect_success 'commit grafts invalidate commit-graph' '
 347         cd "$TRASH_DIRECTORY" &&
 348         test_when_finished rm -rf graft &&
 349         git clone full graft &&
 350         (
 351                 cd graft &&
 352                 git commit-graph write --reachable &&
 353                 test_path_is_file .git/objects/info/commit-graph &&
 354                 H1=$(git rev-parse --verify HEAD~1) &&
 355                 H3=$(git rev-parse --verify HEAD~3) &&
 356                 echo "$H1 $H3" >.git/info/grafts &&
 357                 git -c core.commitGraph=false log >expect &&
 358                 git -c core.commitGraph=true log >actual &&
 359                 test_cmp expect actual &&
 360                 git commit-graph write --reachable &&
 361                 git -c core.commitGraph=false --no-replace-objects log >expect &&
 362                 git -c core.commitGraph=true --no-replace-objects log >actual &&
 363                 test_cmp expect actual &&
 364                 rm -rf .git/objects/info/commit-graph &&
 365                 git commit-graph write --reachable &&
 366                 test_path_is_missing .git/objects/info/commit-graph
 367         )
 368 '
 369
 370 test_expect_success 'replace-objects invalidates commit-graph' '
 371         cd "$TRASH_DIRECTORY" &&
 372         test_when_finished rm -rf shallow &&
 373         git clone --depth 2 "file://$TRASH_DIRECTORY/full" shallow &&
 374         (
 375                 cd shallow &&
 376                 git commit-graph write --reachable &&
 377                 test_path_is_missing .git/objects/info/commit-graph &&
 378                 git fetch origin --unshallow &&
 379                 git commit-graph write --reachable &&
 380                 test_path_is_file .git/objects/info/commit-graph
 381         )
 382 '
 383
 384 # the verify tests below expect the commit-graph to contain
 385 # exactly the commits reachable from the commits/8 branch.
 386 # If the file changes the set of commits in the list, then the
 387 # offsets into the binary file will result in different edits
 388 # and the tests will likely break.
 389
 390 test_expect_success 'git commit-graph verify' '
 391         cd "$TRASH_DIRECTORY/full" &&
 392         git rev-parse commits/8 | git commit-graph write --stdin-commits &&
 393         git commit-graph verify >output
 394 '
 395
 396 NUM_COMMITS=9
 397 NUM_OCTOPUS_EDGES=2
 398 HASH_LEN="$(test_oid rawsz)"
 399 GRAPH_BYTE_VERSION=4
 400 GRAPH_BYTE_HASH=5
 401 GRAPH_BYTE_CHUNK_COUNT=6
 402 GRAPH_CHUNK_LOOKUP_OFFSET=8
 403 GRAPH_CHUNK_LOOKUP_WIDTH=12
 404 GRAPH_CHUNK_LOOKUP_ROWS=5
 405 GRAPH_BYTE_OID_FANOUT_ID=$GRAPH_CHUNK_LOOKUP_OFFSET
 406 GRAPH_BYTE_OID_LOOKUP_ID=$(($GRAPH_CHUNK_LOOKUP_OFFSET + \
 407                             1 * $GRAPH_CHUNK_LOOKUP_WIDTH))
 408 GRAPH_BYTE_COMMIT_DATA_ID=$(($GRAPH_CHUNK_LOOKUP_OFFSET + \
 409                              2 * $GRAPH_CHUNK_LOOKUP_WIDTH))
 410 GRAPH_FANOUT_OFFSET=$(($GRAPH_CHUNK_LOOKUP_OFFSET + \
 411                        $GRAPH_CHUNK_LOOKUP_WIDTH * $GRAPH_CHUNK_LOOKUP_ROWS))
 412 GRAPH_BYTE_FANOUT1=$(($GRAPH_FANOUT_OFFSET + 4 * 4))
 413 GRAPH_BYTE_FANOUT2=$(($GRAPH_FANOUT_OFFSET + 4 * 255))
 414 GRAPH_OID_LOOKUP_OFFSET=$(($GRAPH_FANOUT_OFFSET + 4 * 256))
 415 GRAPH_BYTE_OID_LOOKUP_ORDER=$(($GRAPH_OID_LOOKUP_OFFSET + $HASH_LEN * 8))
 416 GRAPH_BYTE_OID_LOOKUP_MISSING=$(($GRAPH_OID_LOOKUP_OFFSET + $HASH_LEN * 4 + 10))
 417 GRAPH_COMMIT_DATA_OFFSET=$(($GRAPH_OID_LOOKUP_OFFSET + $HASH_LEN * $NUM_COMMITS))
 418 GRAPH_BYTE_COMMIT_TREE=$GRAPH_COMMIT_DATA_OFFSET
 419 GRAPH_BYTE_COMMIT_PARENT=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN))
 420 GRAPH_BYTE_COMMIT_EXTRA_PARENT=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 4))
 421 GRAPH_BYTE_COMMIT_WRONG_PARENT=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 3))
 422 GRAPH_BYTE_COMMIT_GENERATION=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 11))
 423 GRAPH_BYTE_COMMIT_DATE=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 12))
 424 GRAPH_COMMIT_DATA_WIDTH=$(($HASH_LEN + 16))
 425 GRAPH_OCTOPUS_DATA_OFFSET=$(($GRAPH_COMMIT_DATA_OFFSET + \
 426                              $GRAPH_COMMIT_DATA_WIDTH * $NUM_COMMITS))
 427 GRAPH_BYTE_OCTOPUS=$(($GRAPH_OCTOPUS_DATA_OFFSET + 4))
 428 GRAPH_BYTE_FOOTER=$(($GRAPH_OCTOPUS_DATA_OFFSET + 4 * $NUM_OCTOPUS_EDGES))
 429
 430 corrupt_graph_setup() {
 431         cd "$TRASH_DIRECTORY/full" &&
 432         test_when_finished mv commit-graph-backup $objdir/info/commit-graph &&
 433         cp $objdir/info/commit-graph commit-graph-backup
 434 }
 435
 436 corrupt_graph_verify() {
 437         grepstr=$1
 438         test_must_fail git commit-graph verify 2>test_err &&
 439         grep -v "^+" test_err >err &&
 440         test_i18ngrep "$grepstr" err &&
 441         if test "$2" != "no-copy"
 442         then
 443                 cp $objdir/info/commit-graph commit-graph-pre-write-test
 444         fi &&
 445         git status --short &&
 446         GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD=true git commit-graph write &&
 447         git commit-graph verify
 448 }
 449
 450 # usage: corrupt_graph_and_verify <position> <data> <string> [<zero_pos>]
 451 # Manipulates the commit-graph file at the position
 452 # by inserting the data, optionally zeroing the file
 453 # starting at <zero_pos>, then runs 'git commit-graph verify'
 454 # and places the output in the file 'err'. Test 'err' for
 455 # the given string.
 456 corrupt_graph_and_verify() {
 457         pos=$1
 458         data="${2:-\0}"
 459         grepstr=$3
 460         corrupt_graph_setup &&
 461         orig_size=$(wc -c < $objdir/info/commit-graph) &&
 462         zero_pos=${4:-${orig_size}} &&
 463         printf "$data" | dd of="$objdir/info/commit-graph" bs=1 seek="$pos" conv=notrunc &&
 464         dd of="$objdir/info/commit-graph" bs=1 seek="$zero_pos" if=/dev/null &&
 465         generate_zero_bytes $(($orig_size - $zero_pos)) >>"$objdir/info/commit-graph" &&
 466         corrupt_graph_verify "$grepstr"
 467
 468 }
 469
 470 test_expect_success POSIXPERM,SANITY 'detect permission problem' '
 471         corrupt_graph_setup &&
 472         chmod 000 $objdir/info/commit-graph &&
 473         corrupt_graph_verify "Could not open" "no-copy"
 474 '
 475
 476 test_expect_success 'detect too small' '
 477         corrupt_graph_setup &&
 478         echo "a small graph" >$objdir/info/commit-graph &&
 479         corrupt_graph_verify "too small"
 480 '
 481
 482 test_expect_success 'detect bad signature' '
 483         corrupt_graph_and_verify 0 "\0" \
 484                 "graph signature"
 485 '
 486
 487 test_expect_success 'detect bad version' '
 488         corrupt_graph_and_verify $GRAPH_BYTE_VERSION "\02" \
 489                 "graph version"
 490 '
 491
 492 test_expect_success 'detect bad hash version' '
 493         corrupt_graph_and_verify $GRAPH_BYTE_HASH "\03" \
 494                 "hash version"
 495 '
 496
 497 test_expect_success 'detect low chunk count' '
 498         corrupt_graph_and_verify $GRAPH_BYTE_CHUNK_COUNT "\02" \
 499                 "missing the .* chunk"
 500 '
 501
 502 test_expect_success 'detect missing OID fanout chunk' '
 503         corrupt_graph_and_verify $GRAPH_BYTE_OID_FANOUT_ID "\0" \
 504                 "missing the OID Fanout chunk"
 505 '
 506
 507 test_expect_success 'detect missing OID lookup chunk' '
 508         corrupt_graph_and_verify $GRAPH_BYTE_OID_LOOKUP_ID "\0" \
 509                 "missing the OID Lookup chunk"
 510 '
 511
 512 test_expect_success 'detect missing commit data chunk' '
 513         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_DATA_ID "\0" \
 514                 "missing the Commit Data chunk"
 515 '
 516
 517 test_expect_success 'detect incorrect fanout' '
 518         corrupt_graph_and_verify $GRAPH_BYTE_FANOUT1 "\01" \
 519                 "fanout value"
 520 '
 521
 522 test_expect_success 'detect incorrect fanout final value' '
 523         corrupt_graph_and_verify $GRAPH_BYTE_FANOUT2 "\01" \
 524                 "fanout value"
 525 '
 526
 527 test_expect_success 'detect incorrect OID order' '
 528         corrupt_graph_and_verify $GRAPH_BYTE_OID_LOOKUP_ORDER "\01" \
 529                 "incorrect OID order"
 530 '
 531
 532 test_expect_success 'detect OID not in object database' '
 533         corrupt_graph_and_verify $GRAPH_BYTE_OID_LOOKUP_MISSING "\01" \
 534                 "from object database"
 535 '
 536
 537 test_expect_success 'detect incorrect tree OID' '
 538         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_TREE "\01" \
 539                 "root tree OID for commit"
 540 '
 541
 542 test_expect_success 'detect incorrect parent int-id' '
 543         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_PARENT "\01" \
 544                 "invalid parent"
 545 '
 546
 547 test_expect_success 'detect extra parent int-id' '
 548         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_EXTRA_PARENT "\00" \
 549                 "is too long"
 550 '
 551
 552 test_expect_success 'detect wrong parent' '
 553         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_WRONG_PARENT "\01" \
 554                 "commit-graph parent for"
 555 '
 556
 557 test_expect_success 'detect incorrect generation number' '
 558         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_GENERATION "\070" \
 559                 "generation for commit"
 560 '
 561
 562 test_expect_success 'detect incorrect generation number' '
 563         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_GENERATION "\01" \
 564                 "non-zero generation number"
 565 '
 566
 567 test_expect_success 'detect incorrect commit date' '
 568         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_DATE "\01" \
 569                 "commit date"
 570 '
 571
 572 test_expect_success 'detect incorrect parent for octopus merge' '
 573         corrupt_graph_and_verify $GRAPH_BYTE_OCTOPUS "\01" \
 574                 "invalid parent"
 575 '
 576
 577 test_expect_success 'detect invalid checksum hash' '
 578         corrupt_graph_and_verify $GRAPH_BYTE_FOOTER "\00" \
 579                 "incorrect checksum"
 580 '
 581
 582 test_expect_success 'detect incorrect chunk count' '
 583         corrupt_graph_and_verify $GRAPH_BYTE_CHUNK_COUNT "\377" \
 584                 "chunk lookup table entry missing" $GRAPH_CHUNK_LOOKUP_OFFSET
 585 '
 586
 587 test_expect_success 'git fsck (checks commit-graph)' '
 588         cd "$TRASH_DIRECTORY/full" &&
 589         git fsck &&
 590         corrupt_graph_and_verify $GRAPH_BYTE_FOOTER "\00" \
 591                 "incorrect checksum" &&
 592         cp commit-graph-pre-write-test $objdir/info/commit-graph &&
 593         test_must_fail git fsck
 594 '
 595
 596 test_expect_success 'setup non-the_repository tests' '
 597         rm -rf repo &&
 598         git init repo &&
 599         test_commit -C repo one &&
 600         test_commit -C repo two &&
 601         git -C repo config core.commitGraph true &&
 602         git -C repo rev-parse two | \
 603                 git -C repo commit-graph write --stdin-commits
 604 '
 605
 606 test_expect_success 'parse_commit_in_graph works for non-the_repository' '
 607         test-tool repository parse_commit_in_graph \
 608                 repo/.git repo "$(git -C repo rev-parse two)" >actual &&
 609         {
 610                 git -C repo log --pretty=format:"%ct " -1 &&
 611                 git -C repo rev-parse one
 612         } >expect &&
 613         test_cmp expect actual &&
 614
 615         test-tool repository parse_commit_in_graph \
 616                 repo/.git repo "$(git -C repo rev-parse one)" >actual &&
 617         git -C repo log --pretty="%ct" -1 one >expect &&
 618         test_cmp expect actual
 619 '
 620
 621 test_expect_success 'get_commit_tree_in_graph works for non-the_repository' '
 622         test-tool repository get_commit_tree_in_graph \
 623                 repo/.git repo "$(git -C repo rev-parse two)" >actual &&
 624         git -C repo rev-parse two^{tree} >expect &&
 625         test_cmp expect actual &&
 626
 627         test-tool repository get_commit_tree_in_graph \
 628                 repo/.git repo "$(git -C repo rev-parse one)" >actual &&
 629         git -C repo rev-parse one^{tree} >expect &&
 630         test_cmp expect actual
 631 '
 632
 633 test_expect_success 'corrupt commit-graph write (broken parent)' '
 634         rm -rf repo &&
 635         git init repo &&
 636         (
 637                 cd repo &&
 638                 empty="$(git mktree </dev/null)" &&
 639                 cat >broken <<-EOF &&
 640                 tree $empty
 641                 parent $ZERO_OID
 642                 author whatever <whatever@example.com> 1234 -0000
 643                 committer whatever <whatever@example.com> 1234 -0000
 644
 645                 broken commit
 646                 EOF
 647                 broken="$(git hash-object -w -t commit --literally broken)" &&
 648                 git commit-tree -p "$broken" -m "good commit" "$empty" >good &&
 649                 test_must_fail git commit-graph write --stdin-commits \
 650                         <good 2>test_err &&
 651                 test_i18ngrep "unable to parse commit" test_err
 652         )
 653 '
 654
 655 test_expect_success 'corrupt commit-graph write (missing tree)' '
 656         rm -rf repo &&
 657         git init repo &&
 658         (
 659                 cd repo &&
 660                 tree="$(git mktree </dev/null)" &&
 661                 cat >broken <<-EOF &&
 662                 parent $ZERO_OID
 663                 author whatever <whatever@example.com> 1234 -0000
 664                 committer whatever <whatever@example.com> 1234 -0000
 665
 666                 broken commit
 667                 EOF
 668                 broken="$(git hash-object -w -t commit --literally broken)" &&
 669                 git commit-tree -p "$broken" -m "good" "$tree" >good &&
 670                 test_must_fail git commit-graph write --stdin-commits \
 671                         <good 2>test_err &&
 672                 test_i18ngrep "unable to parse commit" test_err
 673         )
 674 '
 675
 676 test_done