t/t5318-commit-graph.sh

   1 #!/bin/sh
   2
   3 test_description='commit graph'
   4 . ./test-lib.sh
   5
   6 test_expect_success 'setup full repo' '
   7         mkdir full &&
   8         cd "$TRASH_DIRECTORY/full" &&
   9         git init &&
  10         git config core.commitGraph true &&
  11         objdir=".git/objects" &&
  12         test_oid_init
  13 '
  14
  15 test_expect_success POSIXPERM 'tweak umask for modebit tests' '
  16         umask 022
  17 '
  18
  19 test_expect_success 'verify graph with no graph file' '
  20         cd "$TRASH_DIRECTORY/full" &&
  21         git commit-graph verify
  22 '
  23
  24 test_expect_success 'write graph with no packs' '
  25         cd "$TRASH_DIRECTORY/full" &&
  26         git commit-graph write --object-dir $objdir &&
  27         test_path_is_missing $objdir/info/commit-graph
  28 '
  29
  30 test_expect_success 'exit with correct error on bad input to --stdin-packs' '
  31         cd "$TRASH_DIRECTORY/full" &&
  32         echo doesnotexist >in &&
  33         test_expect_code 1 git commit-graph write --stdin-packs <in 2>stderr &&
  34         test_i18ngrep "error adding pack" stderr
  35 '
  36
  37 test_expect_success 'create commits and repack' '
  38         cd "$TRASH_DIRECTORY/full" &&
  39         for i in $(test_seq 3)
  40         do
  41                 test_commit $i &&
  42                 git branch commits/$i
  43         done &&
  44         git repack
  45 '
  46
  47 test_expect_success 'exit with correct error on bad input to --stdin-commits' '
  48         cd "$TRASH_DIRECTORY/full" &&
  49         echo HEAD | test_expect_code 1 git commit-graph write --stdin-commits 2>stderr &&
  50         test_i18ngrep "invalid commit object id" stderr &&
  51         # valid tree OID, but not a commit OID
  52         git rev-parse HEAD^{tree} | test_expect_code 1 git commit-graph write --stdin-commits 2>stderr &&
  53         test_i18ngrep "invalid commit object id" stderr
  54 '
  55
  56 graph_git_two_modes() {
  57         git -c core.commitGraph=true $1 >output
  58         git -c core.commitGraph=false $1 >expect
  59         test_cmp expect output
  60 }
  61
  62 graph_git_behavior() {
  63         MSG=$1
  64         DIR=$2
  65         BRANCH=$3
  66         COMPARE=$4
  67         test_expect_success "check normal git operations: $MSG" '
  68                 cd "$TRASH_DIRECTORY/$DIR" &&
  69                 graph_git_two_modes "log --oneline $BRANCH" &&
  70                 graph_git_two_modes "log --topo-order $BRANCH" &&
  71                 graph_git_two_modes "log --graph $COMPARE..$BRANCH" &&
  72                 graph_git_two_modes "branch -vv" &&
  73                 graph_git_two_modes "merge-base -a $BRANCH $COMPARE"
  74         '
  75 }
  76
  77 graph_git_behavior 'no graph' full commits/3 commits/1
  78
  79 graph_read_expect() {
  80         OPTIONAL=""
  81         NUM_CHUNKS=3
  82         if test ! -z $2
  83         then
  84                 OPTIONAL=" $2"
  85                 NUM_CHUNKS=$((3 + $(echo "$2" | wc -w)))
  86         fi
  87         cat >expect <<- EOF
  88         header: 43475048 1 1 $NUM_CHUNKS 0
  89         num_commits: $1
  90         chunks: oid_fanout oid_lookup commit_metadata$OPTIONAL
  91         EOF
  92         test-tool read-graph >output &&
  93         test_cmp expect output
  94 }
  95
  96 test_expect_success 'write graph' '
  97         cd "$TRASH_DIRECTORY/full" &&
  98         git commit-graph write &&
  99         test_path_is_file $objdir/info/commit-graph &&
 100         graph_read_expect "3"
 101 '
 102
 103 test_expect_success POSIXPERM 'write graph has correct permissions' '
 104         test_path_is_file $objdir/info/commit-graph &&
 105         echo "-r--r--r--" >expect &&
 106         test_modebits $objdir/info/commit-graph >actual &&
 107         test_cmp expect actual
 108 '
 109
 110 graph_git_behavior 'graph exists' full commits/3 commits/1
 111
 112 test_expect_success 'Add more commits' '
 113         cd "$TRASH_DIRECTORY/full" &&
 114         git reset --hard commits/1 &&
 115         for i in $(test_seq 4 5)
 116         do
 117                 test_commit $i &&
 118                 git branch commits/$i
 119         done &&
 120         git reset --hard commits/2 &&
 121         for i in $(test_seq 6 7)
 122         do
 123                 test_commit $i &&
 124                 git branch commits/$i
 125         done &&
 126         git reset --hard commits/2 &&
 127         git merge commits/4 &&
 128         git branch merge/1 &&
 129         git reset --hard commits/4 &&
 130         git merge commits/6 &&
 131         git branch merge/2 &&
 132         git reset --hard commits/3 &&
 133         git merge commits/5 commits/7 &&
 134         git branch merge/3 &&
 135         git repack
 136 '
 137
 138 test_expect_success 'commit-graph write progress off for redirected stderr' '
 139         cd "$TRASH_DIRECTORY/full" &&
 140         git commit-graph write 2>err &&
 141         test_line_count = 0 err
 142 '
 143
 144 test_expect_success 'commit-graph write force progress on for stderr' '
 145         cd "$TRASH_DIRECTORY/full" &&
 146         GIT_PROGRESS_DELAY=0 git commit-graph write --progress 2>err &&
 147         test_file_not_empty err
 148 '
 149
 150 test_expect_success 'commit-graph write with the --no-progress option' '
 151         cd "$TRASH_DIRECTORY/full" &&
 152         git commit-graph write --no-progress 2>err &&
 153         test_line_count = 0 err
 154 '
 155
 156 test_expect_success 'commit-graph verify progress off for redirected stderr' '
 157         cd "$TRASH_DIRECTORY/full" &&
 158         git commit-graph verify 2>err &&
 159         test_line_count = 0 err
 160 '
 161
 162 test_expect_success 'commit-graph verify force progress on for stderr' '
 163         cd "$TRASH_DIRECTORY/full" &&
 164         GIT_PROGRESS_DELAY=0 git commit-graph verify --progress 2>err &&
 165         test_file_not_empty err
 166 '
 167
 168 test_expect_success 'commit-graph verify with the --no-progress option' '
 169         cd "$TRASH_DIRECTORY/full" &&
 170         git commit-graph verify --no-progress 2>err &&
 171         test_line_count = 0 err
 172 '
 173
 174 # Current graph structure:
 175 #
 176 #   __M3___
 177 #  /   |   \
 178 # 3 M1 5 M2 7
 179 # |/  \|/  \|
 180 # 2    4    6
 181 # |___/____/
 182 # 1
 183
 184 test_expect_success 'write graph with merges' '
 185         cd "$TRASH_DIRECTORY/full" &&
 186         git commit-graph write &&
 187         test_path_is_file $objdir/info/commit-graph &&
 188         graph_read_expect "10" "extra_edges"
 189 '
 190
 191 graph_git_behavior 'merge 1 vs 2' full merge/1 merge/2
 192 graph_git_behavior 'merge 1 vs 3' full merge/1 merge/3
 193 graph_git_behavior 'merge 2 vs 3' full merge/2 merge/3
 194
 195 test_expect_success 'Add one more commit' '
 196         cd "$TRASH_DIRECTORY/full" &&
 197         test_commit 8 &&
 198         git branch commits/8 &&
 199         ls $objdir/pack | grep idx >existing-idx &&
 200         git repack &&
 201         ls $objdir/pack| grep idx | grep -v -f existing-idx >new-idx
 202 '
 203
 204 # Current graph structure:
 205 #
 206 #      8
 207 #      |
 208 #   __M3___
 209 #  /   |   \
 210 # 3 M1 5 M2 7
 211 # |/  \|/  \|
 212 # 2    4    6
 213 # |___/____/
 214 # 1
 215
 216 graph_git_behavior 'mixed mode, commit 8 vs merge 1' full commits/8 merge/1
 217 graph_git_behavior 'mixed mode, commit 8 vs merge 2' full commits/8 merge/2
 218
 219 test_expect_success 'write graph with new commit' '
 220         cd "$TRASH_DIRECTORY/full" &&
 221         git commit-graph write &&
 222         test_path_is_file $objdir/info/commit-graph &&
 223         graph_read_expect "11" "extra_edges"
 224 '
 225
 226 graph_git_behavior 'full graph, commit 8 vs merge 1' full commits/8 merge/1
 227 graph_git_behavior 'full graph, commit 8 vs merge 2' full commits/8 merge/2
 228
 229 test_expect_success 'write graph with nothing new' '
 230         cd "$TRASH_DIRECTORY/full" &&
 231         git commit-graph write &&
 232         test_path_is_file $objdir/info/commit-graph &&
 233         graph_read_expect "11" "extra_edges"
 234 '
 235
 236 graph_git_behavior 'cleared graph, commit 8 vs merge 1' full commits/8 merge/1
 237 graph_git_behavior 'cleared graph, commit 8 vs merge 2' full commits/8 merge/2
 238
 239 test_expect_success 'build graph from latest pack with closure' '
 240         cd "$TRASH_DIRECTORY/full" &&
 241         cat new-idx | git commit-graph write --stdin-packs &&
 242         test_path_is_file $objdir/info/commit-graph &&
 243         graph_read_expect "9" "extra_edges"
 244 '
 245
 246 graph_git_behavior 'graph from pack, commit 8 vs merge 1' full commits/8 merge/1
 247 graph_git_behavior 'graph from pack, commit 8 vs merge 2' full commits/8 merge/2
 248
 249 test_expect_success 'build graph from commits with closure' '
 250         cd "$TRASH_DIRECTORY/full" &&
 251         git tag -a -m "merge" tag/merge merge/2 &&
 252         git rev-parse tag/merge >commits-in &&
 253         git rev-parse merge/1 >>commits-in &&
 254         cat commits-in | git commit-graph write --stdin-commits &&
 255         test_path_is_file $objdir/info/commit-graph &&
 256         graph_read_expect "6"
 257 '
 258
 259 graph_git_behavior 'graph from commits, commit 8 vs merge 1' full commits/8 merge/1
 260 graph_git_behavior 'graph from commits, commit 8 vs merge 2' full commits/8 merge/2
 261
 262 test_expect_success 'build graph from commits with append' '
 263         cd "$TRASH_DIRECTORY/full" &&
 264         git rev-parse merge/3 | git commit-graph write --stdin-commits --append &&
 265         test_path_is_file $objdir/info/commit-graph &&
 266         graph_read_expect "10" "extra_edges"
 267 '
 268
 269 graph_git_behavior 'append graph, commit 8 vs merge 1' full commits/8 merge/1
 270 graph_git_behavior 'append graph, commit 8 vs merge 2' full commits/8 merge/2
 271
 272 test_expect_success 'build graph using --reachable' '
 273         cd "$TRASH_DIRECTORY/full" &&
 274         git commit-graph write --reachable &&
 275         test_path_is_file $objdir/info/commit-graph &&
 276         graph_read_expect "11" "extra_edges"
 277 '
 278
 279 graph_git_behavior 'append graph, commit 8 vs merge 1' full commits/8 merge/1
 280 graph_git_behavior 'append graph, commit 8 vs merge 2' full commits/8 merge/2
 281
 282 test_expect_success 'setup bare repo' '
 283         cd "$TRASH_DIRECTORY" &&
 284         git clone --bare --no-local full bare &&
 285         cd bare &&
 286         git config core.commitGraph true &&
 287         baredir="./objects"
 288 '
 289
 290 graph_git_behavior 'bare repo, commit 8 vs merge 1' bare commits/8 merge/1
 291 graph_git_behavior 'bare repo, commit 8 vs merge 2' bare commits/8 merge/2
 292
 293 test_expect_success 'write graph in bare repo' '
 294         cd "$TRASH_DIRECTORY/bare" &&
 295         git commit-graph write &&
 296         test_path_is_file $baredir/info/commit-graph &&
 297         graph_read_expect "11" "extra_edges"
 298 '
 299
 300 graph_git_behavior 'bare repo with graph, commit 8 vs merge 1' bare commits/8 merge/1
 301 graph_git_behavior 'bare repo with graph, commit 8 vs merge 2' bare commits/8 merge/2
 302
 303 test_expect_success 'perform fast-forward merge in full repo' '
 304         cd "$TRASH_DIRECTORY/full" &&
 305         git checkout -b merge-5-to-8 commits/5 &&
 306         git merge commits/8 &&
 307         git show-ref -s merge-5-to-8 >output &&
 308         git show-ref -s commits/8 >expect &&
 309         test_cmp expect output
 310 '
 311
 312 test_expect_success 'check that gc computes commit-graph' '
 313         cd "$TRASH_DIRECTORY/full" &&
 314         git commit --allow-empty -m "blank" &&
 315         git commit-graph write --reachable &&
 316         cp $objdir/info/commit-graph commit-graph-before-gc &&
 317         git reset --hard HEAD~1 &&
 318         git config gc.writeCommitGraph true &&
 319         git gc &&
 320         cp $objdir/info/commit-graph commit-graph-after-gc &&
 321         ! test_cmp_bin commit-graph-before-gc commit-graph-after-gc &&
 322         git commit-graph write --reachable &&
 323         test_cmp_bin commit-graph-after-gc $objdir/info/commit-graph
 324 '
 325
 326 test_expect_success 'replace-objects invalidates commit-graph' '
 327         cd "$TRASH_DIRECTORY" &&
 328         test_when_finished rm -rf replace &&
 329         git clone full replace &&
 330         (
 331                 cd replace &&
 332                 git commit-graph write --reachable &&
 333                 test_path_is_file .git/objects/info/commit-graph &&
 334                 git replace HEAD~1 HEAD~2 &&
 335                 git -c core.commitGraph=false log >expect &&
 336                 git -c core.commitGraph=true log >actual &&
 337                 test_cmp expect actual &&
 338                 git commit-graph write --reachable &&
 339                 git -c core.commitGraph=false --no-replace-objects log >expect &&
 340                 git -c core.commitGraph=true --no-replace-objects log >actual &&
 341                 test_cmp expect actual &&
 342                 rm -rf .git/objects/info/commit-graph &&
 343                 git commit-graph write --reachable &&
 344                 test_path_is_file .git/objects/info/commit-graph
 345         )
 346 '
 347
 348 test_expect_success 'commit grafts invalidate commit-graph' '
 349         cd "$TRASH_DIRECTORY" &&
 350         test_when_finished rm -rf graft &&
 351         git clone full graft &&
 352         (
 353                 cd graft &&
 354                 git commit-graph write --reachable &&
 355                 test_path_is_file .git/objects/info/commit-graph &&
 356                 H1=$(git rev-parse --verify HEAD~1) &&
 357                 H3=$(git rev-parse --verify HEAD~3) &&
 358                 echo "$H1 $H3" >.git/info/grafts &&
 359                 git -c core.commitGraph=false log >expect &&
 360                 git -c core.commitGraph=true log >actual &&
 361                 test_cmp expect actual &&
 362                 git commit-graph write --reachable &&
 363                 git -c core.commitGraph=false --no-replace-objects log >expect &&
 364                 git -c core.commitGraph=true --no-replace-objects log >actual &&
 365                 test_cmp expect actual &&
 366                 rm -rf .git/objects/info/commit-graph &&
 367                 git commit-graph write --reachable &&
 368                 test_path_is_missing .git/objects/info/commit-graph
 369         )
 370 '
 371
 372 test_expect_success 'replace-objects invalidates commit-graph' '
 373         cd "$TRASH_DIRECTORY" &&
 374         test_when_finished rm -rf shallow &&
 375         git clone --depth 2 "file://$TRASH_DIRECTORY/full" shallow &&
 376         (
 377                 cd shallow &&
 378                 git commit-graph write --reachable &&
 379                 test_path_is_missing .git/objects/info/commit-graph &&
 380                 git fetch origin --unshallow &&
 381                 git commit-graph write --reachable &&
 382                 test_path_is_file .git/objects/info/commit-graph
 383         )
 384 '
 385
 386 # the verify tests below expect the commit-graph to contain
 387 # exactly the commits reachable from the commits/8 branch.
 388 # If the file changes the set of commits in the list, then the
 389 # offsets into the binary file will result in different edits
 390 # and the tests will likely break.
 391
 392 test_expect_success 'git commit-graph verify' '
 393         cd "$TRASH_DIRECTORY/full" &&
 394         git rev-parse commits/8 | git commit-graph write --stdin-commits &&
 395         git commit-graph verify >output
 396 '
 397
 398 NUM_COMMITS=9
 399 NUM_OCTOPUS_EDGES=2
 400 HASH_LEN="$(test_oid rawsz)"
 401 GRAPH_BYTE_VERSION=4
 402 GRAPH_BYTE_HASH=5
 403 GRAPH_BYTE_CHUNK_COUNT=6
 404 GRAPH_CHUNK_LOOKUP_OFFSET=8
 405 GRAPH_CHUNK_LOOKUP_WIDTH=12
 406 GRAPH_CHUNK_LOOKUP_ROWS=5
 407 GRAPH_BYTE_OID_FANOUT_ID=$GRAPH_CHUNK_LOOKUP_OFFSET
 408 GRAPH_BYTE_OID_LOOKUP_ID=$(($GRAPH_CHUNK_LOOKUP_OFFSET + \
 409                             1 * $GRAPH_CHUNK_LOOKUP_WIDTH))
 410 GRAPH_BYTE_COMMIT_DATA_ID=$(($GRAPH_CHUNK_LOOKUP_OFFSET + \
 411                              2 * $GRAPH_CHUNK_LOOKUP_WIDTH))
 412 GRAPH_FANOUT_OFFSET=$(($GRAPH_CHUNK_LOOKUP_OFFSET + \
 413                        $GRAPH_CHUNK_LOOKUP_WIDTH * $GRAPH_CHUNK_LOOKUP_ROWS))
 414 GRAPH_BYTE_FANOUT1=$(($GRAPH_FANOUT_OFFSET + 4 * 4))
 415 GRAPH_BYTE_FANOUT2=$(($GRAPH_FANOUT_OFFSET + 4 * 255))
 416 GRAPH_OID_LOOKUP_OFFSET=$(($GRAPH_FANOUT_OFFSET + 4 * 256))
 417 GRAPH_BYTE_OID_LOOKUP_ORDER=$(($GRAPH_OID_LOOKUP_OFFSET + $HASH_LEN * 8))
 418 GRAPH_BYTE_OID_LOOKUP_MISSING=$(($GRAPH_OID_LOOKUP_OFFSET + $HASH_LEN * 4 + 10))
 419 GRAPH_COMMIT_DATA_OFFSET=$(($GRAPH_OID_LOOKUP_OFFSET + $HASH_LEN * $NUM_COMMITS))
 420 GRAPH_BYTE_COMMIT_TREE=$GRAPH_COMMIT_DATA_OFFSET
 421 GRAPH_BYTE_COMMIT_PARENT=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN))
 422 GRAPH_BYTE_COMMIT_EXTRA_PARENT=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 4))
 423 GRAPH_BYTE_COMMIT_WRONG_PARENT=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 3))
 424 GRAPH_BYTE_COMMIT_GENERATION=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 11))
 425 GRAPH_BYTE_COMMIT_DATE=$(($GRAPH_COMMIT_DATA_OFFSET + $HASH_LEN + 12))
 426 GRAPH_COMMIT_DATA_WIDTH=$(($HASH_LEN + 16))
 427 GRAPH_OCTOPUS_DATA_OFFSET=$(($GRAPH_COMMIT_DATA_OFFSET + \
 428                              $GRAPH_COMMIT_DATA_WIDTH * $NUM_COMMITS))
 429 GRAPH_BYTE_OCTOPUS=$(($GRAPH_OCTOPUS_DATA_OFFSET + 4))
 430 GRAPH_BYTE_FOOTER=$(($GRAPH_OCTOPUS_DATA_OFFSET + 4 * $NUM_OCTOPUS_EDGES))
 431
 432 corrupt_graph_setup() {
 433         cd "$TRASH_DIRECTORY/full" &&
 434         test_when_finished mv commit-graph-backup $objdir/info/commit-graph &&
 435         cp $objdir/info/commit-graph commit-graph-backup &&
 436         chmod u+w $objdir/info/commit-graph
 437 }
 438
 439 corrupt_graph_verify() {
 440         grepstr=$1
 441         test_must_fail git commit-graph verify 2>test_err &&
 442         grep -v "^+" test_err >err &&
 443         test_i18ngrep "$grepstr" err &&
 444         if test "$2" != "no-copy"
 445         then
 446                 cp $objdir/info/commit-graph commit-graph-pre-write-test
 447         fi &&
 448         git status --short &&
 449         GIT_TEST_COMMIT_GRAPH_DIE_ON_LOAD=true git commit-graph write &&
 450         chmod u+w $objdir/info/commit-graph &&
 451         git commit-graph verify
 452 }
 453
 454 # usage: corrupt_graph_and_verify <position> <data> <string> [<zero_pos>]
 455 # Manipulates the commit-graph file at the position
 456 # by inserting the data, optionally zeroing the file
 457 # starting at <zero_pos>, then runs 'git commit-graph verify'
 458 # and places the output in the file 'err'. Test 'err' for
 459 # the given string.
 460 corrupt_graph_and_verify() {
 461         pos=$1
 462         data="${2:-\0}"
 463         grepstr=$3
 464         corrupt_graph_setup &&
 465         orig_size=$(wc -c < $objdir/info/commit-graph) &&
 466         zero_pos=${4:-${orig_size}} &&
 467         printf "$data" | dd of="$objdir/info/commit-graph" bs=1 seek="$pos" conv=notrunc &&
 468         dd of="$objdir/info/commit-graph" bs=1 seek="$zero_pos" if=/dev/null &&
 469         generate_zero_bytes $(($orig_size - $zero_pos)) >>"$objdir/info/commit-graph" &&
 470         corrupt_graph_verify "$grepstr"
 471
 472 }
 473
 474 test_expect_success POSIXPERM,SANITY 'detect permission problem' '
 475         corrupt_graph_setup &&
 476         chmod 000 $objdir/info/commit-graph &&
 477         corrupt_graph_verify "Could not open" "no-copy"
 478 '
 479
 480 test_expect_success 'detect too small' '
 481         corrupt_graph_setup &&
 482         echo "a small graph" >$objdir/info/commit-graph &&
 483         corrupt_graph_verify "too small"
 484 '
 485
 486 test_expect_success 'detect bad signature' '
 487         corrupt_graph_and_verify 0 "\0" \
 488                 "graph signature"
 489 '
 490
 491 test_expect_success 'detect bad version' '
 492         corrupt_graph_and_verify $GRAPH_BYTE_VERSION "\02" \
 493                 "graph version"
 494 '
 495
 496 test_expect_success 'detect bad hash version' '
 497         corrupt_graph_and_verify $GRAPH_BYTE_HASH "\03" \
 498                 "hash version"
 499 '
 500
 501 test_expect_success 'detect low chunk count' '
 502         corrupt_graph_and_verify $GRAPH_BYTE_CHUNK_COUNT "\02" \
 503                 "missing the .* chunk"
 504 '
 505
 506 test_expect_success 'detect missing OID fanout chunk' '
 507         corrupt_graph_and_verify $GRAPH_BYTE_OID_FANOUT_ID "\0" \
 508                 "missing the OID Fanout chunk"
 509 '
 510
 511 test_expect_success 'detect missing OID lookup chunk' '
 512         corrupt_graph_and_verify $GRAPH_BYTE_OID_LOOKUP_ID "\0" \
 513                 "missing the OID Lookup chunk"
 514 '
 515
 516 test_expect_success 'detect missing commit data chunk' '
 517         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_DATA_ID "\0" \
 518                 "missing the Commit Data chunk"
 519 '
 520
 521 test_expect_success 'detect incorrect fanout' '
 522         corrupt_graph_and_verify $GRAPH_BYTE_FANOUT1 "\01" \
 523                 "fanout value"
 524 '
 525
 526 test_expect_success 'detect incorrect fanout final value' '
 527         corrupt_graph_and_verify $GRAPH_BYTE_FANOUT2 "\01" \
 528                 "fanout value"
 529 '
 530
 531 test_expect_success 'detect incorrect OID order' '
 532         corrupt_graph_and_verify $GRAPH_BYTE_OID_LOOKUP_ORDER "\01" \
 533                 "incorrect OID order"
 534 '
 535
 536 test_expect_success 'detect OID not in object database' '
 537         corrupt_graph_and_verify $GRAPH_BYTE_OID_LOOKUP_MISSING "\01" \
 538                 "from object database"
 539 '
 540
 541 test_expect_success 'detect incorrect tree OID' '
 542         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_TREE "\01" \
 543                 "root tree OID for commit"
 544 '
 545
 546 test_expect_success 'detect incorrect parent int-id' '
 547         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_PARENT "\01" \
 548                 "invalid parent"
 549 '
 550
 551 test_expect_success 'detect extra parent int-id' '
 552         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_EXTRA_PARENT "\00" \
 553                 "is too long"
 554 '
 555
 556 test_expect_success 'detect wrong parent' '
 557         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_WRONG_PARENT "\01" \
 558                 "commit-graph parent for"
 559 '
 560
 561 test_expect_success 'detect incorrect generation number' '
 562         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_GENERATION "\070" \
 563                 "generation for commit"
 564 '
 565
 566 test_expect_success 'detect incorrect generation number' '
 567         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_GENERATION "\01" \
 568                 "non-zero generation number"
 569 '
 570
 571 test_expect_success 'detect incorrect commit date' '
 572         corrupt_graph_and_verify $GRAPH_BYTE_COMMIT_DATE "\01" \
 573                 "commit date"
 574 '
 575
 576 test_expect_success 'detect incorrect parent for octopus merge' '
 577         corrupt_graph_and_verify $GRAPH_BYTE_OCTOPUS "\01" \
 578                 "invalid parent"
 579 '
 580
 581 test_expect_success 'detect invalid checksum hash' '
 582         corrupt_graph_and_verify $GRAPH_BYTE_FOOTER "\00" \
 583                 "incorrect checksum"
 584 '
 585
 586 test_expect_success 'detect incorrect chunk count' '
 587         corrupt_graph_and_verify $GRAPH_BYTE_CHUNK_COUNT "\377" \
 588                 "chunk lookup table entry missing" $GRAPH_CHUNK_LOOKUP_OFFSET
 589 '
 590
 591 test_expect_success 'git fsck (checks commit-graph)' '
 592         cd "$TRASH_DIRECTORY/full" &&
 593         git fsck &&
 594         corrupt_graph_and_verify $GRAPH_BYTE_FOOTER "\00" \
 595                 "incorrect checksum" &&
 596         cp commit-graph-pre-write-test $objdir/info/commit-graph &&
 597         test_must_fail git fsck
 598 '
 599
 600 test_expect_success 'setup non-the_repository tests' '
 601         rm -rf repo &&
 602         git init repo &&
 603         test_commit -C repo one &&
 604         test_commit -C repo two &&
 605         git -C repo config core.commitGraph true &&
 606         git -C repo rev-parse two | \
 607                 git -C repo commit-graph write --stdin-commits
 608 '
 609
 610 test_expect_success 'parse_commit_in_graph works for non-the_repository' '
 611         test-tool repository parse_commit_in_graph \
 612                 repo/.git repo "$(git -C repo rev-parse two)" >actual &&
 613         {
 614                 git -C repo log --pretty=format:"%ct " -1 &&
 615                 git -C repo rev-parse one
 616         } >expect &&
 617         test_cmp expect actual &&
 618
 619         test-tool repository parse_commit_in_graph \
 620                 repo/.git repo "$(git -C repo rev-parse one)" >actual &&
 621         git -C repo log --pretty="%ct" -1 one >expect &&
 622         test_cmp expect actual
 623 '
 624
 625 test_expect_success 'get_commit_tree_in_graph works for non-the_repository' '
 626         test-tool repository get_commit_tree_in_graph \
 627                 repo/.git repo "$(git -C repo rev-parse two)" >actual &&
 628         git -C repo rev-parse two^{tree} >expect &&
 629         test_cmp expect actual &&
 630
 631         test-tool repository get_commit_tree_in_graph \
 632                 repo/.git repo "$(git -C repo rev-parse one)" >actual &&
 633         git -C repo rev-parse one^{tree} >expect &&
 634         test_cmp expect actual
 635 '
 636
 637 test_expect_success 'corrupt commit-graph write (broken parent)' '
 638         rm -rf repo &&
 639         git init repo &&
 640         (
 641                 cd repo &&
 642                 empty="$(git mktree </dev/null)" &&
 643                 cat >broken <<-EOF &&
 644                 tree $empty
 645                 parent $ZERO_OID
 646                 author whatever <whatever@example.com> 1234 -0000
 647                 committer whatever <whatever@example.com> 1234 -0000
 648
 649                 broken commit
 650                 EOF
 651                 broken="$(git hash-object -w -t commit --literally broken)" &&
 652                 git commit-tree -p "$broken" -m "good commit" "$empty" >good &&
 653                 test_must_fail git commit-graph write --stdin-commits \
 654                         <good 2>test_err &&
 655                 test_i18ngrep "unable to parse commit" test_err
 656         )
 657 '
 658
 659 test_expect_success 'corrupt commit-graph write (missing tree)' '
 660         rm -rf repo &&
 661         git init repo &&
 662         (
 663                 cd repo &&
 664                 tree="$(git mktree </dev/null)" &&
 665                 cat >broken <<-EOF &&
 666                 parent $ZERO_OID
 667                 author whatever <whatever@example.com> 1234 -0000
 668                 committer whatever <whatever@example.com> 1234 -0000
 669
 670                 broken commit
 671                 EOF
 672                 broken="$(git hash-object -w -t commit --literally broken)" &&
 673                 git commit-tree -p "$broken" -m "good" "$tree" >good &&
 674                 test_must_fail git commit-graph write --stdin-commits \
 675                         <good 2>test_err &&
 676                 test_i18ngrep "unable to parse commit" test_err
 677         )
 678 '
 679
 680 test_done