t/t6030-bisect-porcelain.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2007 Christian Couder
   4 #
   5 test_description='Tests git bisect functionality'
   6
   7 exec </dev/null
   8
   9 . ./test-lib.sh
  10
  11 add_line_into_file()
  12 {
  13     _line=$1
  14     _file=$2
  15
  16     if [ -f "$_file" ]; then
  17         echo "$_line" >> $_file || return $?
  18         MSG="Add <$_line> into <$_file>."
  19     else
  20         echo "$_line" > $_file || return $?
  21         git add $_file || return $?
  22         MSG="Create file <$_file> with <$_line> inside."
  23     fi
  24
  25     test_tick
  26     git commit --quiet -m "$MSG" $_file
  27 }
  28
  29 HASH1=
  30 HASH2=
  31 HASH3=
  32 HASH4=
  33
  34 test_expect_success 'set up basic repo with 1 file (hello) and 4 commits' '
  35      add_line_into_file "1: Hello World" hello &&
  36      HASH1=$(git rev-parse --verify HEAD) &&
  37      add_line_into_file "2: A new day for git" hello &&
  38      HASH2=$(git rev-parse --verify HEAD) &&
  39      add_line_into_file "3: Another new day for git" hello &&
  40      HASH3=$(git rev-parse --verify HEAD) &&
  41      add_line_into_file "4: Ciao for now" hello &&
  42      HASH4=$(git rev-parse --verify HEAD)
  43 '
  44
  45 test_expect_success 'bisect starts with only one bad' '
  46         git bisect reset &&
  47         git bisect start &&
  48         git bisect bad $HASH4 &&
  49         git bisect next
  50 '
  51
  52 test_expect_success 'bisect does not start with only one good' '
  53         git bisect reset &&
  54         git bisect start &&
  55         git bisect good $HASH1 &&
  56         test_must_fail git bisect next
  57 '
  58
  59 test_expect_success 'bisect start with one bad and good' '
  60         git bisect reset &&
  61         git bisect start &&
  62         git bisect good $HASH1 &&
  63         git bisect bad $HASH4 &&
  64         git bisect next
  65 '
  66
  67 test_expect_success 'bisect fails if given any junk instead of revs' '
  68         git bisect reset &&
  69         test_must_fail git bisect start foo $HASH1 -- &&
  70         test_must_fail git bisect start $HASH4 $HASH1 bar -- &&
  71         test -z "$(git for-each-ref "refs/bisect/*")" &&
  72         test -z "$(ls .git/BISECT_* 2>/dev/null)" &&
  73         git bisect start &&
  74         test_must_fail git bisect good foo $HASH1 &&
  75         test_must_fail git bisect good $HASH1 bar &&
  76         test_must_fail git bisect bad frotz &&
  77         test_must_fail git bisect bad $HASH3 $HASH4 &&
  78         test_must_fail git bisect skip bar $HASH3 &&
  79         test_must_fail git bisect skip $HASH1 foo &&
  80         test -z "$(git for-each-ref "refs/bisect/*")" &&
  81         git bisect good $HASH1 &&
  82         git bisect bad $HASH4
  83 '
  84
  85 test_expect_success 'bisect reset: back in the master branch' '
  86         git bisect reset &&
  87         echo "* master" > branch.expect &&
  88         git branch > branch.output &&
  89         cmp branch.expect branch.output
  90 '
  91
  92 test_expect_success 'bisect reset: back in another branch' '
  93         git checkout -b other &&
  94         git bisect start &&
  95         git bisect good $HASH1 &&
  96         git bisect bad $HASH3 &&
  97         git bisect reset &&
  98         echo "  master" > branch.expect &&
  99         echo "* other" >> branch.expect &&
 100         git branch > branch.output &&
 101         cmp branch.expect branch.output
 102 '
 103
 104 test_expect_success 'bisect reset when not bisecting' '
 105         git bisect reset &&
 106         git branch > branch.output &&
 107         cmp branch.expect branch.output
 108 '
 109
 110 test_expect_success 'bisect reset removes packed refs' '
 111         git bisect reset &&
 112         git bisect start &&
 113         git bisect good $HASH1 &&
 114         git bisect bad $HASH3 &&
 115         git pack-refs --all --prune &&
 116         git bisect next &&
 117         git bisect reset &&
 118         test -z "$(git for-each-ref "refs/bisect/*")" &&
 119         test -z "$(git for-each-ref "refs/heads/bisect")"
 120 '
 121
 122 test_expect_success 'bisect reset removes bisect state after --no-checkout' '
 123         git bisect reset &&
 124         git bisect start --no-checkout &&
 125         git bisect good $HASH1 &&
 126         git bisect bad $HASH3 &&
 127         git bisect next &&
 128         git bisect reset &&
 129         test -z "$(git for-each-ref "refs/bisect/*")" &&
 130         test -z "$(git for-each-ref "refs/heads/bisect")" &&
 131         test -z "$(git for-each-ref "BISECT_HEAD")"
 132 '
 133
 134 test_expect_success 'bisect start: back in good branch' '
 135         git branch > branch.output &&
 136         grep "* other" branch.output > /dev/null &&
 137         git bisect start $HASH4 $HASH1 -- &&
 138         git bisect good &&
 139         git bisect start $HASH4 $HASH1 -- &&
 140         git bisect bad &&
 141         git bisect reset &&
 142         git branch > branch.output &&
 143         grep "* other" branch.output > /dev/null
 144 '
 145
 146 test_expect_success 'bisect start: no ".git/BISECT_START" created if junk rev' '
 147         git bisect reset &&
 148         test_must_fail git bisect start $HASH4 foo -- &&
 149         git branch > branch.output &&
 150         grep "* other" branch.output > /dev/null &&
 151         test_must_fail test -e .git/BISECT_START
 152 '
 153
 154 test_expect_success 'bisect start: existing ".git/BISECT_START" not modified if junk rev' '
 155         git bisect start $HASH4 $HASH1 -- &&
 156         git bisect good &&
 157         cp .git/BISECT_START saved &&
 158         test_must_fail git bisect start $HASH4 foo -- &&
 159         git branch > branch.output &&
 160         test_i18ngrep "* (no branch, bisect started on other)" branch.output > /dev/null &&
 161         test_cmp saved .git/BISECT_START
 162 '
 163 test_expect_success 'bisect start: no ".git/BISECT_START" if mistaken rev' '
 164         git bisect start $HASH4 $HASH1 -- &&
 165         git bisect good &&
 166         test_must_fail git bisect start $HASH1 $HASH4 -- &&
 167         git branch > branch.output &&
 168         grep "* other" branch.output > /dev/null &&
 169         test_must_fail test -e .git/BISECT_START
 170 '
 171
 172 test_expect_success 'bisect start: no ".git/BISECT_START" if checkout error' '
 173         echo "temp stuff" > hello &&
 174         test_must_fail git bisect start $HASH4 $HASH1 -- &&
 175         git branch &&
 176         git branch > branch.output &&
 177         grep "* other" branch.output > /dev/null &&
 178         test_must_fail test -e .git/BISECT_START &&
 179         test -z "$(git for-each-ref "refs/bisect/*")" &&
 180         git checkout HEAD hello
 181 '
 182
 183 # $HASH1 is good, $HASH4 is bad, we skip $HASH3
 184 # but $HASH2 is bad,
 185 # so we should find $HASH2 as the first bad commit
 186 test_expect_success 'bisect skip: successful result' '
 187         test_when_finished git bisect reset &&
 188         git bisect reset &&
 189         git bisect start $HASH4 $HASH1 &&
 190         git bisect skip &&
 191         git bisect bad > my_bisect_log.txt &&
 192         grep "$HASH2 is the first bad commit" my_bisect_log.txt
 193 '
 194
 195 # $HASH1 is good, $HASH4 is bad, we skip $HASH3 and $HASH2
 196 # so we should not be able to tell the first bad commit
 197 # among $HASH2, $HASH3 and $HASH4
 198 test_expect_success 'bisect skip: cannot tell between 3 commits' '
 199         test_when_finished git bisect reset &&
 200         git bisect start $HASH4 $HASH1 &&
 201         git bisect skip &&
 202         test_expect_code 2 git bisect skip >my_bisect_log.txt &&
 203         grep "first bad commit could be any of" my_bisect_log.txt &&
 204         ! grep $HASH1 my_bisect_log.txt &&
 205         grep $HASH2 my_bisect_log.txt &&
 206         grep $HASH3 my_bisect_log.txt &&
 207         grep $HASH4 my_bisect_log.txt
 208 '
 209
 210 # $HASH1 is good, $HASH4 is bad, we skip $HASH3
 211 # but $HASH2 is good,
 212 # so we should not be able to tell the first bad commit
 213 # among $HASH3 and $HASH4
 214 test_expect_success 'bisect skip: cannot tell between 2 commits' '
 215         test_when_finished git bisect reset &&
 216         git bisect start $HASH4 $HASH1 &&
 217         git bisect skip &&
 218         test_expect_code 2 git bisect good >my_bisect_log.txt &&
 219         grep "first bad commit could be any of" my_bisect_log.txt &&
 220         ! grep $HASH1 my_bisect_log.txt &&
 221         ! grep $HASH2 my_bisect_log.txt &&
 222         grep $HASH3 my_bisect_log.txt &&
 223         grep $HASH4 my_bisect_log.txt
 224 '
 225
 226 # $HASH1 is good, $HASH4 is both skipped and bad, we skip $HASH3
 227 # and $HASH2 is good,
 228 # so we should not be able to tell the first bad commit
 229 # among $HASH3 and $HASH4
 230 test_expect_success 'bisect skip: with commit both bad and skipped' '
 231         test_when_finished git bisect reset &&
 232         git bisect start &&
 233         git bisect skip &&
 234         git bisect bad &&
 235         git bisect good $HASH1 &&
 236         git bisect skip &&
 237         test_expect_code 2 git bisect good >my_bisect_log.txt &&
 238         grep "first bad commit could be any of" my_bisect_log.txt &&
 239         ! grep $HASH1 my_bisect_log.txt &&
 240         ! grep $HASH2 my_bisect_log.txt &&
 241         grep $HASH3 my_bisect_log.txt &&
 242         grep $HASH4 my_bisect_log.txt
 243 '
 244
 245 # We want to automatically find the commit that
 246 # introduced "Another" into hello.
 247 test_expect_success \
 248     '"git bisect run" simple case' \
 249     'echo "#"\!"/bin/sh" > test_script.sh &&
 250      echo "grep Another hello > /dev/null" >> test_script.sh &&
 251      echo "test \$? -ne 0" >> test_script.sh &&
 252      chmod +x test_script.sh &&
 253      git bisect start &&
 254      git bisect good $HASH1 &&
 255      git bisect bad $HASH4 &&
 256      git bisect run ./test_script.sh > my_bisect_log.txt &&
 257      grep "$HASH3 is the first bad commit" my_bisect_log.txt &&
 258      git bisect reset'
 259
 260 # We want to automatically find the commit that
 261 # introduced "Ciao" into hello.
 262 test_expect_success \
 263     '"git bisect run" with more complex "git bisect start"' \
 264     'echo "#"\!"/bin/sh" > test_script.sh &&
 265      echo "grep Ciao hello > /dev/null" >> test_script.sh &&
 266      echo "test \$? -ne 0" >> test_script.sh &&
 267      chmod +x test_script.sh &&
 268      git bisect start $HASH4 $HASH1 &&
 269      git bisect run ./test_script.sh > my_bisect_log.txt &&
 270      grep "$HASH4 is the first bad commit" my_bisect_log.txt &&
 271      git bisect reset'
 272
 273 # $HASH1 is good, $HASH5 is bad, we skip $HASH3
 274 # but $HASH4 is good,
 275 # so we should find $HASH5 as the first bad commit
 276 HASH5=
 277 test_expect_success 'bisect skip: add line and then a new test' '
 278         add_line_into_file "5: Another new line." hello &&
 279         HASH5=$(git rev-parse --verify HEAD) &&
 280         git bisect start $HASH5 $HASH1 &&
 281         git bisect skip &&
 282         git bisect good > my_bisect_log.txt &&
 283         grep "$HASH5 is the first bad commit" my_bisect_log.txt &&
 284         git bisect log > log_to_replay.txt &&
 285         git bisect reset
 286 '
 287
 288 test_expect_success 'bisect skip and bisect replay' '
 289         git bisect replay log_to_replay.txt > my_bisect_log.txt &&
 290         grep "$HASH5 is the first bad commit" my_bisect_log.txt &&
 291         git bisect reset
 292 '
 293
 294 HASH6=
 295 test_expect_success 'bisect run & skip: cannot tell between 2' '
 296         add_line_into_file "6: Yet a line." hello &&
 297         HASH6=$(git rev-parse --verify HEAD) &&
 298         echo "#"\!"/bin/sh" > test_script.sh &&
 299         echo "sed -ne \\\$p hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
 300         echo "grep line hello > /dev/null" >> test_script.sh &&
 301         echo "test \$? -ne 0" >> test_script.sh &&
 302         chmod +x test_script.sh &&
 303         git bisect start $HASH6 $HASH1 &&
 304         if git bisect run ./test_script.sh > my_bisect_log.txt
 305         then
 306                 echo Oops, should have failed.
 307                 false
 308         else
 309                 test $? -eq 2 &&
 310                 grep "first bad commit could be any of" my_bisect_log.txt &&
 311                 ! grep $HASH3 my_bisect_log.txt &&
 312                 ! grep $HASH6 my_bisect_log.txt &&
 313                 grep $HASH4 my_bisect_log.txt &&
 314                 grep $HASH5 my_bisect_log.txt
 315         fi
 316 '
 317
 318 HASH7=
 319 test_expect_success 'bisect run & skip: find first bad' '
 320         git bisect reset &&
 321         add_line_into_file "7: Should be the last line." hello &&
 322         HASH7=$(git rev-parse --verify HEAD) &&
 323         echo "#"\!"/bin/sh" > test_script.sh &&
 324         echo "sed -ne \\\$p hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
 325         echo "sed -ne \\\$p hello | grep day > /dev/null && exit 125" >> test_script.sh &&
 326         echo "grep Yet hello > /dev/null" >> test_script.sh &&
 327         echo "test \$? -ne 0" >> test_script.sh &&
 328         chmod +x test_script.sh &&
 329         git bisect start $HASH7 $HASH1 &&
 330         git bisect run ./test_script.sh > my_bisect_log.txt &&
 331         grep "$HASH6 is the first bad commit" my_bisect_log.txt
 332 '
 333
 334 test_expect_success 'bisect skip only one range' '
 335         git bisect reset &&
 336         git bisect start $HASH7 $HASH1 &&
 337         git bisect skip $HASH1..$HASH5 &&
 338         test "$HASH6" = "$(git rev-parse --verify HEAD)" &&
 339         test_must_fail git bisect bad > my_bisect_log.txt &&
 340         grep "first bad commit could be any of" my_bisect_log.txt
 341 '
 342
 343 test_expect_success 'bisect skip many ranges' '
 344         git bisect start $HASH7 $HASH1 &&
 345         test "$HASH4" = "$(git rev-parse --verify HEAD)" &&
 346         git bisect skip $HASH2 $HASH2.. ..$HASH5 &&
 347         test "$HASH6" = "$(git rev-parse --verify HEAD)" &&
 348         test_must_fail git bisect bad > my_bisect_log.txt &&
 349         grep "first bad commit could be any of" my_bisect_log.txt
 350 '
 351
 352 test_expect_success 'bisect starting with a detached HEAD' '
 353         git bisect reset &&
 354         git checkout master^ &&
 355         HEAD=$(git rev-parse --verify HEAD) &&
 356         git bisect start &&
 357         test $HEAD = $(cat .git/BISECT_START) &&
 358         git bisect reset &&
 359         test $HEAD = $(git rev-parse --verify HEAD)
 360 '
 361
 362 test_expect_success 'bisect errors out if bad and good are mistaken' '
 363         git bisect reset &&
 364         test_must_fail git bisect start $HASH2 $HASH4 2> rev_list_error &&
 365         grep "mistake good and bad" rev_list_error &&
 366         git bisect reset
 367 '
 368
 369 test_expect_success 'bisect does not create a "bisect" branch' '
 370         git bisect reset &&
 371         git bisect start $HASH7 $HASH1 &&
 372         git branch bisect &&
 373         rev_hash4=$(git rev-parse --verify HEAD) &&
 374         test "$rev_hash4" = "$HASH4" &&
 375         git branch -D bisect &&
 376         git bisect good &&
 377         git branch bisect &&
 378         rev_hash6=$(git rev-parse --verify HEAD) &&
 379         test "$rev_hash6" = "$HASH6" &&
 380         git bisect good > my_bisect_log.txt &&
 381         grep "$HASH7 is the first bad commit" my_bisect_log.txt &&
 382         git bisect reset &&
 383         rev_hash6=$(git rev-parse --verify bisect) &&
 384         test "$rev_hash6" = "$HASH6" &&
 385         git branch -D bisect
 386 '
 387
 388 # This creates a "side" branch to test "siblings" cases.
 389 #
 390 # H1-H2-H3-H4-H5-H6-H7  <--other
 391 #            \
 392 #             S5-S6-S7  <--side
 393 #
 394 test_expect_success 'side branch creation' '
 395         git bisect reset &&
 396         git checkout -b side $HASH4 &&
 397         add_line_into_file "5(side): first line on a side branch" hello2 &&
 398         SIDE_HASH5=$(git rev-parse --verify HEAD) &&
 399         add_line_into_file "6(side): second line on a side branch" hello2 &&
 400         SIDE_HASH6=$(git rev-parse --verify HEAD) &&
 401         add_line_into_file "7(side): third line on a side branch" hello2 &&
 402         SIDE_HASH7=$(git rev-parse --verify HEAD)
 403 '
 404
 405 test_expect_success 'good merge base when good and bad are siblings' '
 406         git bisect start "$HASH7" "$SIDE_HASH7" > my_bisect_log.txt &&
 407         grep "merge base must be tested" my_bisect_log.txt &&
 408         grep $HASH4 my_bisect_log.txt &&
 409         git bisect good > my_bisect_log.txt &&
 410         test_must_fail grep "merge base must be tested" my_bisect_log.txt &&
 411         grep $HASH6 my_bisect_log.txt &&
 412         git bisect reset
 413 '
 414 test_expect_success 'skipped merge base when good and bad are siblings' '
 415         git bisect start "$SIDE_HASH7" "$HASH7" > my_bisect_log.txt &&
 416         grep "merge base must be tested" my_bisect_log.txt &&
 417         grep $HASH4 my_bisect_log.txt &&
 418         git bisect skip > my_bisect_log.txt 2>&1 &&
 419         grep "warning" my_bisect_log.txt &&
 420         grep $SIDE_HASH6 my_bisect_log.txt &&
 421         git bisect reset
 422 '
 423
 424 test_expect_success 'bad merge base when good and bad are siblings' '
 425         git bisect start "$HASH7" HEAD > my_bisect_log.txt &&
 426         grep "merge base must be tested" my_bisect_log.txt &&
 427         grep $HASH4 my_bisect_log.txt &&
 428         test_must_fail git bisect bad > my_bisect_log.txt 2>&1 &&
 429         grep "merge base $HASH4 is bad" my_bisect_log.txt &&
 430         grep "fixed between $HASH4 and \[$SIDE_HASH7\]" my_bisect_log.txt &&
 431         git bisect reset
 432 '
 433
 434 # This creates a few more commits (A and B) to test "siblings" cases
 435 # when a good and a bad rev have many merge bases.
 436 #
 437 # We should have the following:
 438 #
 439 # H1-H2-H3-H4-H5-H6-H7
 440 #            \  \     \
 441 #             S5-A     \
 442 #              \        \
 443 #               S6-S7----B
 444 #
 445 # And there A and B have 2 merge bases (S5 and H5) that should be
 446 # reported by "git merge-base --all A B".
 447 #
 448 test_expect_success 'many merge bases creation' '
 449         git checkout "$SIDE_HASH5" &&
 450         git merge -m "merge HASH5 and SIDE_HASH5" "$HASH5" &&
 451         A_HASH=$(git rev-parse --verify HEAD) &&
 452         git checkout side &&
 453         git merge -m "merge HASH7 and SIDE_HASH7" "$HASH7" &&
 454         B_HASH=$(git rev-parse --verify HEAD) &&
 455         git merge-base --all "$A_HASH" "$B_HASH" > merge_bases.txt &&
 456         test_line_count = 2 merge_bases.txt &&
 457         grep "$HASH5" merge_bases.txt &&
 458         grep "$SIDE_HASH5" merge_bases.txt
 459 '
 460
 461 test_expect_success 'good merge bases when good and bad are siblings' '
 462         git bisect start "$B_HASH" "$A_HASH" > my_bisect_log.txt &&
 463         grep "merge base must be tested" my_bisect_log.txt &&
 464         git bisect good > my_bisect_log2.txt &&
 465         grep "merge base must be tested" my_bisect_log2.txt &&
 466         {
 467                 {
 468                         grep "$SIDE_HASH5" my_bisect_log.txt &&
 469                         grep "$HASH5" my_bisect_log2.txt
 470                 } || {
 471                         grep "$SIDE_HASH5" my_bisect_log2.txt &&
 472                         grep "$HASH5" my_bisect_log.txt
 473                 }
 474         } &&
 475         git bisect reset
 476 '
 477
 478 test_expect_success 'optimized merge base checks' '
 479         git bisect start "$HASH7" "$SIDE_HASH7" > my_bisect_log.txt &&
 480         grep "merge base must be tested" my_bisect_log.txt &&
 481         grep "$HASH4" my_bisect_log.txt &&
 482         git bisect good > my_bisect_log2.txt &&
 483         test -f ".git/BISECT_ANCESTORS_OK" &&
 484         test "$HASH6" = $(git rev-parse --verify HEAD) &&
 485         git bisect bad > my_bisect_log3.txt &&
 486         git bisect good "$A_HASH" > my_bisect_log4.txt &&
 487         grep "merge base must be tested" my_bisect_log4.txt &&
 488         test_must_fail test -f ".git/BISECT_ANCESTORS_OK"
 489 '
 490
 491 # This creates another side branch called "parallel" with some files
 492 # in some directories, to test bisecting with paths.
 493 #
 494 # We should have the following:
 495 #
 496 #    P1-P2-P3-P4-P5-P6-P7
 497 #   /        /        /
 498 # H1-H2-H3-H4-H5-H6-H7
 499 #            \  \     \
 500 #             S5-A     \
 501 #              \        \
 502 #               S6-S7----B
 503 #
 504 test_expect_success '"parallel" side branch creation' '
 505         git bisect reset &&
 506         git checkout -b parallel $HASH1 &&
 507         mkdir dir1 dir2 &&
 508         add_line_into_file "1(para): line 1 on parallel branch" dir1/file1 &&
 509         PARA_HASH1=$(git rev-parse --verify HEAD) &&
 510         add_line_into_file "2(para): line 2 on parallel branch" dir2/file2 &&
 511         PARA_HASH2=$(git rev-parse --verify HEAD) &&
 512         add_line_into_file "3(para): line 3 on parallel branch" dir2/file3 &&
 513         PARA_HASH3=$(git rev-parse --verify HEAD) &&
 514         git merge -m "merge HASH4 and PARA_HASH3" "$HASH4" &&
 515         PARA_HASH4=$(git rev-parse --verify HEAD) &&
 516         add_line_into_file "5(para): add line on parallel branch" dir1/file1 &&
 517         PARA_HASH5=$(git rev-parse --verify HEAD) &&
 518         add_line_into_file "6(para): add line on parallel branch" dir2/file2 &&
 519         PARA_HASH6=$(git rev-parse --verify HEAD) &&
 520         git merge -m "merge HASH7 and PARA_HASH6" "$HASH7" &&
 521         PARA_HASH7=$(git rev-parse --verify HEAD)
 522 '
 523
 524 test_expect_success 'restricting bisection on one dir' '
 525         git bisect reset &&
 526         git bisect start HEAD $HASH1 -- dir1 &&
 527         para1=$(git rev-parse --verify HEAD) &&
 528         test "$para1" = "$PARA_HASH1" &&
 529         git bisect bad > my_bisect_log.txt &&
 530         grep "$PARA_HASH1 is the first bad commit" my_bisect_log.txt
 531 '
 532
 533 test_expect_success 'restricting bisection on one dir and a file' '
 534         git bisect reset &&
 535         git bisect start HEAD $HASH1 -- dir1 hello &&
 536         para4=$(git rev-parse --verify HEAD) &&
 537         test "$para4" = "$PARA_HASH4" &&
 538         git bisect bad &&
 539         hash3=$(git rev-parse --verify HEAD) &&
 540         test "$hash3" = "$HASH3" &&
 541         git bisect good &&
 542         hash4=$(git rev-parse --verify HEAD) &&
 543         test "$hash4" = "$HASH4" &&
 544         git bisect good &&
 545         para1=$(git rev-parse --verify HEAD) &&
 546         test "$para1" = "$PARA_HASH1" &&
 547         git bisect good > my_bisect_log.txt &&
 548         grep "$PARA_HASH4 is the first bad commit" my_bisect_log.txt
 549 '
 550
 551 test_expect_success 'skipping away from skipped commit' '
 552         git bisect start $PARA_HASH7 $HASH1 &&
 553         para4=$(git rev-parse --verify HEAD) &&
 554         test "$para4" = "$PARA_HASH4" &&
 555         git bisect skip &&
 556         hash7=$(git rev-parse --verify HEAD) &&
 557         test "$hash7" = "$HASH7" &&
 558         git bisect skip &&
 559         para3=$(git rev-parse --verify HEAD) &&
 560         test "$para3" = "$PARA_HASH3"
 561 '
 562
 563 test_expect_success 'erroring out when using bad path parameters' '
 564         test_must_fail git bisect start $PARA_HASH7 $HASH1 -- foobar 2> error.txt &&
 565         grep "bad path parameters" error.txt
 566 '
 567
 568 test_expect_success 'test bisection on bare repo - --no-checkout specified' '
 569         git clone --bare . bare.nocheckout &&
 570         (
 571                 cd bare.nocheckout &&
 572                 git bisect start --no-checkout &&
 573                 git bisect good $HASH1 &&
 574                 git bisect bad $HASH4 &&
 575                 git bisect run eval \
 576                         "test \$(git rev-list BISECT_HEAD ^$HASH2 --max-count=1 | wc -l) = 0" \
 577                         >../nocheckout.log
 578         ) &&
 579         grep "$HASH3 is the first bad commit" nocheckout.log
 580 '
 581
 582
 583 test_expect_success 'test bisection on bare repo - --no-checkout defaulted' '
 584         git clone --bare . bare.defaulted &&
 585         (
 586                 cd bare.defaulted &&
 587                 git bisect start &&
 588                 git bisect good $HASH1 &&
 589                 git bisect bad $HASH4 &&
 590                 git bisect run eval \
 591                         "test \$(git rev-list BISECT_HEAD ^$HASH2 --max-count=1 | wc -l) = 0" \
 592                         >../defaulted.log
 593         ) &&
 594         grep "$HASH3 is the first bad commit" defaulted.log
 595 '
 596
 597 #
 598 # This creates a broken branch which cannot be checked out because
 599 # the tree created has been deleted.
 600 #
 601 # H1-H2-H3-H4-H5-H6-H7  <--other
 602 #            \
 603 #             S5-S6'-S7'-S8'-S9  <--broken
 604 #
 605 # Commits marked with ' have a missing tree.
 606 #
 607 test_expect_success 'broken branch creation' '
 608         git bisect reset &&
 609         git checkout -b broken $HASH4 &&
 610         git tag BROKEN_HASH4 $HASH4 &&
 611         add_line_into_file "5(broken): first line on a broken branch" hello2 &&
 612         git tag BROKEN_HASH5 &&
 613         mkdir missing &&
 614         :> missing/MISSING &&
 615         git add missing/MISSING &&
 616         git commit -m "6(broken): Added file that will be deleted" &&
 617         git tag BROKEN_HASH6 &&
 618         add_line_into_file "7(broken): second line on a broken branch" hello2 &&
 619         git tag BROKEN_HASH7 &&
 620         add_line_into_file "8(broken): third line on a broken branch" hello2 &&
 621         git tag BROKEN_HASH8 &&
 622         git rm missing/MISSING &&
 623         git commit -m "9(broken): Remove missing file" &&
 624         git tag BROKEN_HASH9 &&
 625         rm .git/objects/39/f7e61a724187ab767d2e08442d9b6b9dab587d
 626 '
 627
 628 echo "" > expected.ok
 629 cat > expected.missing-tree.default <<EOF
 630 fatal: unable to read tree 39f7e61a724187ab767d2e08442d9b6b9dab587d
 631 EOF
 632
 633 test_expect_success 'bisect fails if tree is broken on start commit' '
 634         git bisect reset &&
 635         test_must_fail git bisect start BROKEN_HASH7 BROKEN_HASH4 2>error.txt &&
 636         test_cmp expected.missing-tree.default error.txt
 637 '
 638
 639 test_expect_success 'bisect fails if tree is broken on trial commit' '
 640         git bisect reset &&
 641         test_must_fail git bisect start BROKEN_HASH9 BROKEN_HASH4 2>error.txt &&
 642         git reset --hard broken &&
 643         git checkout broken &&
 644         test_cmp expected.missing-tree.default error.txt
 645 '
 646
 647 check_same()
 648 {
 649         echo "Checking $1 is the same as $2" &&
 650         test_cmp_rev "$1" "$2"
 651 }
 652
 653 test_expect_success 'bisect: --no-checkout - start commit bad' '
 654         git bisect reset &&
 655         git bisect start BROKEN_HASH7 BROKEN_HASH4 --no-checkout &&
 656         check_same BROKEN_HASH6 BISECT_HEAD &&
 657         git bisect reset
 658 '
 659
 660 test_expect_success 'bisect: --no-checkout - trial commit bad' '
 661         git bisect reset &&
 662         git bisect start broken BROKEN_HASH4 --no-checkout &&
 663         check_same BROKEN_HASH6 BISECT_HEAD &&
 664         git bisect reset
 665 '
 666
 667 test_expect_success 'bisect: --no-checkout - target before breakage' '
 668         git bisect reset &&
 669         git bisect start broken BROKEN_HASH4 --no-checkout &&
 670         check_same BROKEN_HASH6 BISECT_HEAD &&
 671         git bisect bad BISECT_HEAD &&
 672         check_same BROKEN_HASH5 BISECT_HEAD &&
 673         git bisect bad BISECT_HEAD &&
 674         check_same BROKEN_HASH5 bisect/bad &&
 675         git bisect reset
 676 '
 677
 678 test_expect_success 'bisect: --no-checkout - target in breakage' '
 679         git bisect reset &&
 680         git bisect start broken BROKEN_HASH4 --no-checkout &&
 681         check_same BROKEN_HASH6 BISECT_HEAD &&
 682         git bisect bad BISECT_HEAD &&
 683         check_same BROKEN_HASH5 BISECT_HEAD &&
 684         git bisect good BISECT_HEAD &&
 685         check_same BROKEN_HASH6 bisect/bad &&
 686         git bisect reset
 687 '
 688
 689 test_expect_success 'bisect: --no-checkout - target after breakage' '
 690         git bisect reset &&
 691         git bisect start broken BROKEN_HASH4 --no-checkout &&
 692         check_same BROKEN_HASH6 BISECT_HEAD &&
 693         git bisect good BISECT_HEAD &&
 694         check_same BROKEN_HASH8 BISECT_HEAD &&
 695         git bisect good BISECT_HEAD &&
 696         check_same BROKEN_HASH9 bisect/bad &&
 697         git bisect reset
 698 '
 699
 700 test_expect_success 'bisect: demonstrate identification of damage boundary' "
 701         git bisect reset &&
 702         git checkout broken &&
 703         git bisect start broken master --no-checkout &&
 704         git bisect run \"\$SHELL_PATH\" -c '
 705                 GOOD=\$(git for-each-ref \"--format=%(objectname)\" refs/bisect/good-*) &&
 706                 git rev-list --objects BISECT_HEAD --not \$GOOD >tmp.\$\$ &&
 707                 git pack-objects --stdout >/dev/null < tmp.\$\$
 708                 rc=\$?
 709                 rm -f tmp.\$\$
 710                 test \$rc = 0' &&
 711         check_same BROKEN_HASH6 bisect/bad &&
 712         git bisect reset
 713 "
 714
 715 cat > expected.bisect-log <<EOF
 716 # bad: [32a594a3fdac2d57cf6d02987e30eec68511498c] Add <4: Ciao for now> into <hello>.
 717 # good: [7b7f204a749c3125d5224ed61ea2ae1187ad046f] Add <2: A new day for git> into <hello>.
 718 git bisect start '32a594a3fdac2d57cf6d02987e30eec68511498c' '7b7f204a749c3125d5224ed61ea2ae1187ad046f'
 719 # good: [3de952f2416b6084f557ec417709eac740c6818c] Add <3: Another new day for git> into <hello>.
 720 git bisect good 3de952f2416b6084f557ec417709eac740c6818c
 721 # first bad commit: [32a594a3fdac2d57cf6d02987e30eec68511498c] Add <4: Ciao for now> into <hello>.
 722 EOF
 723
 724 test_expect_success 'bisect log: successfull result' '
 725         git bisect reset &&
 726         git bisect start $HASH4 $HASH2 &&
 727         git bisect good &&
 728         git bisect log >bisect-log.txt &&
 729         test_cmp expected.bisect-log bisect-log.txt &&
 730         git bisect reset
 731 '
 732
 733 cat > expected.bisect-skip-log <<EOF
 734 # bad: [32a594a3fdac2d57cf6d02987e30eec68511498c] Add <4: Ciao for now> into <hello>.
 735 # good: [7b7f204a749c3125d5224ed61ea2ae1187ad046f] Add <2: A new day for git> into <hello>.
 736 git bisect start '32a594a3fdac2d57cf6d02987e30eec68511498c' '7b7f204a749c3125d5224ed61ea2ae1187ad046f'
 737 # skip: [3de952f2416b6084f557ec417709eac740c6818c] Add <3: Another new day for git> into <hello>.
 738 git bisect skip 3de952f2416b6084f557ec417709eac740c6818c
 739 # only skipped commits left to test
 740 # possible first bad commit: [32a594a3fdac2d57cf6d02987e30eec68511498c] Add <4: Ciao for now> into <hello>.
 741 # possible first bad commit: [3de952f2416b6084f557ec417709eac740c6818c] Add <3: Another new day for git> into <hello>.
 742 EOF
 743
 744 test_expect_success 'bisect log: only skip commits left' '
 745         git bisect reset &&
 746         git bisect start $HASH4 $HASH2 &&
 747         test_must_fail git bisect skip &&
 748         git bisect log >bisect-skip-log.txt &&
 749         test_cmp expected.bisect-skip-log bisect-skip-log.txt &&
 750         git bisect reset
 751 '
 752
 753 test_expect_success '"git bisect bad HEAD" behaves as "git bisect bad"' '
 754         git checkout parallel &&
 755         git bisect start HEAD $HASH1 &&
 756         git bisect good HEAD &&
 757         git bisect bad HEAD &&
 758         test "$HASH6" = $(git rev-parse --verify HEAD) &&
 759         git bisect reset
 760 '
 761
 762 test_done