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   1#!/bin/sh
   2#
   3# Copyright (c) 2007 Christian Couder
   4#
   5test_description='Tests git bisect functionality'
   6
   7exec </dev/null
   8
   9. ./test-lib.sh
  10
  11add_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" $_file
  27}
  28
  29HASH1=
  30HASH2=
  31HASH3=
  32HASH4=
  33
  34test_expect_success 'set up basic repo with 1 file (hello) and 4 commits' '
  35     add_line_into_file "1: Hello World" hello &&
  36     HASH1=$(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
  45test_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
  52test_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
  59test_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
  67test_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
  85test_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
  92test_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
 104test_expect_success 'bisect reset when not bisecting' '
 105        git bisect reset &&
 106        git branch > branch.output &&
 107        cmp branch.expect branch.output
 108'
 109
 110test_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
 122test_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
 134test_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
 146test_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
 154test_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'
 163test_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
 172test_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
 186test_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
 198test_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
 214test_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
 230test_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.
 247test_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.
 262test_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 $HASH5 as the first bad commit
 276HASH5=
 277test_expect_success 'bisect skip: add line and then a new test' '
 278        add_line_into_file "5: Another new line." hello &&
 279        HASH5=$(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
 288test_expect_success 'bisect skip and bisect replay' '
 289        git bisect replay log_to_replay.txt > my_bisect_log.txt &&
 290        grep "$HASH5 is the first bad commit" my_bisect_log.txt &&
 291        git bisect reset
 292'
 293
 294HASH6=
 295test_expect_success 'bisect run & skip: cannot tell between 2' '
 296        add_line_into_file "6: Yet a line." hello &&
 297        HASH6=$(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 $HASH5 my_bisect_log.txt
 315        fi
 316'
 317
 318HASH7=
 319test_expect_success 'bisect run & skip: find first bad' '
 320        git bisect reset &&
 321        add_line_into_file "7: Should be the last line." hello &&
 322        HASH7=$(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
 334test_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
 343test_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
 352test_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
 362test_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        test_i18ngrep "mistook good and bad" rev_list_error &&
 366        git bisect reset
 367'
 368
 369test_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#
 394test_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
 405test_expect_success 'good merge base when good and bad are siblings' '
 406        git bisect start "$HASH7" "$SIDE_HASH7" > my_bisect_log.txt &&
 407        test_i18ngrep "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        ! grep "merge base must be tested" my_bisect_log.txt &&
 411        grep $HASH6 my_bisect_log.txt &&
 412        git bisect reset
 413'
 414test_expect_success 'skipped merge base when good and bad are siblings' '
 415        git bisect start "$SIDE_HASH7" "$HASH7" > my_bisect_log.txt &&
 416        test_i18ngrep "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 $SIDE_HASH6 my_bisect_log.txt &&
 421        git bisect reset
 422'
 423
 424test_expect_success 'bad merge base when good and bad are siblings' '
 425        git bisect start "$HASH7" HEAD > my_bisect_log.txt &&
 426        test_i18ngrep "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        test_i18ngrep "merge base $HASH4 is bad" my_bisect_log.txt &&
 430        test_i18ngrep "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#
 448test_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 "$SIDE_HASH5" merge_bases.txt
 459'
 460
 461test_expect_success 'good merge bases when good and bad are siblings' '
 462        git bisect start "$B_HASH" "$A_HASH" > my_bisect_log.txt &&
 463        test_i18ngrep "merge base must be tested" my_bisect_log.txt &&
 464        git bisect good > my_bisect_log2.txt &&
 465        test_i18ngrep "merge base must be tested" my_bisect_log2.txt &&
 466        {
 467                {
 468                        grep "$SIDE_HASH5" my_bisect_log.txt &&
 469                        grep "$HASH5" my_bisect_log2.txt
 470                } || {
 471                        grep "$SIDE_HASH5" my_bisect_log2.txt &&
 472                        grep "$HASH5" my_bisect_log.txt
 473                }
 474        } &&
 475        git bisect reset
 476'
 477
 478test_expect_success 'optimized merge base checks' '
 479        git bisect start "$HASH7" "$SIDE_HASH7" > my_bisect_log.txt &&
 480        test_i18ngrep "merge base must be tested" my_bisect_log.txt &&
 481        grep "$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        test_i18ngrep "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#
 504test_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
 524test_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
 533test_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
 551test_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
 563test_expect_success 'erroring out when using bad path parameters' '
 564        test_must_fail git bisect start $PARA_HASH7 $HASH1 -- foobar 2> error.txt &&
 565        test_i18ngrep "bad path parameters" error.txt
 566'
 567
 568test_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
 583test_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#
 607test_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
 628echo "" > expected.ok
 629cat > expected.missing-tree.default <<EOF
 630fatal: unable to read tree 39f7e61a724187ab767d2e08442d9b6b9dab587d
 631EOF
 632
 633test_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
 639test_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
 647check_same()
 648{
 649        echo "Checking $1 is the same as $2" &&
 650        test_cmp_rev "$1" "$2"
 651}
 652
 653test_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
 660test_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
 667test_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
 678test_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        test_must_fail git bisect good BISECT_HEAD &&
 685        check_same BROKEN_HASH6 bisect/bad &&
 686        git bisect reset
 687'
 688
 689test_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        test_must_fail git bisect good BISECT_HEAD &&
 696        check_same BROKEN_HASH9 bisect/bad &&
 697        git bisect reset
 698'
 699
 700test_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        test_must_fail 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
 715cat > 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>.
 718git bisect start '32a594a3fdac2d57cf6d02987e30eec68511498c' '7b7f204a749c3125d5224ed61ea2ae1187ad046f'
 719# good: [3de952f2416b6084f557ec417709eac740c6818c] Add <3: Another new day for git> into <hello>.
 720git bisect good 3de952f2416b6084f557ec417709eac740c6818c
 721# first bad commit: [32a594a3fdac2d57cf6d02987e30eec68511498c] Add <4: Ciao for now> into <hello>.
 722EOF
 723
 724test_expect_success 'bisect log: successful 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
 733cat > 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>.
 736git bisect start '32a594a3fdac2d57cf6d02987e30eec68511498c' '7b7f204a749c3125d5224ed61ea2ae1187ad046f'
 737# skip: [3de952f2416b6084f557ec417709eac740c6818c] Add <3: Another new day for git> into <hello>.
 738git 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>.
 742EOF
 743
 744test_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
 753test_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
 762test_expect_success 'bisect starts with only one new' '
 763        git bisect reset &&
 764        git bisect start &&
 765        git bisect new $HASH4 &&
 766        git bisect next
 767'
 768
 769test_expect_success 'bisect does not start with only one old' '
 770        git bisect reset &&
 771        git bisect start &&
 772        git bisect old $HASH1 &&
 773        test_must_fail git bisect next
 774'
 775
 776test_expect_success 'bisect start with one new and old' '
 777        git bisect reset &&
 778        git bisect start &&
 779        git bisect old $HASH1 &&
 780        git bisect new $HASH4 &&
 781        git bisect new &&
 782        git bisect new >bisect_result &&
 783        grep "$HASH2 is the first new commit" bisect_result &&
 784        git bisect log >log_to_replay.txt &&
 785        git bisect reset
 786'
 787
 788test_expect_success 'bisect replay with old and new' '
 789        git bisect replay log_to_replay.txt >bisect_result &&
 790        grep "$HASH2 is the first new commit" bisect_result &&
 791        git bisect reset
 792'
 793
 794test_expect_success 'bisect cannot mix old/new and good/bad' '
 795        git bisect start &&
 796        git bisect bad $HASH4 &&
 797        test_must_fail git bisect old $HASH1
 798'
 799
 800test_expect_success 'bisect terms needs 0 or 1 argument' '
 801        git bisect reset &&
 802        test_must_fail git bisect terms only-one &&
 803        test_must_fail git bisect terms 1 2 &&
 804        test_must_fail git bisect terms 2>actual &&
 805        echo "error: no terms defined" >expected &&
 806        test_i18ncmp expected actual
 807'
 808
 809test_expect_success 'bisect terms shows good/bad after start' '
 810        git bisect reset &&
 811        git bisect start HEAD $HASH1 &&
 812        git bisect terms --term-good >actual &&
 813        echo good >expected &&
 814        test_cmp expected actual &&
 815        git bisect terms --term-bad >actual &&
 816        echo bad >expected &&
 817        test_cmp expected actual
 818'
 819
 820test_expect_success 'bisect start with one term1 and term2' '
 821        git bisect reset &&
 822        git bisect start --term-old term2 --term-new term1 &&
 823        git bisect term2 $HASH1 &&
 824        git bisect term1 $HASH4 &&
 825        git bisect term1 &&
 826        git bisect term1 >bisect_result &&
 827        grep "$HASH2 is the first term1 commit" bisect_result &&
 828        git bisect log >log_to_replay.txt &&
 829        git bisect reset
 830'
 831
 832test_expect_success 'bisect replay with term1 and term2' '
 833        git bisect replay log_to_replay.txt >bisect_result &&
 834        grep "$HASH2 is the first term1 commit" bisect_result &&
 835        git bisect reset
 836'
 837
 838test_expect_success 'bisect start term1 term2' '
 839        git bisect reset &&
 840        git bisect start --term-new term1 --term-old term2 $HASH4 $HASH1 &&
 841        git bisect term1 &&
 842        git bisect term1 >bisect_result &&
 843        grep "$HASH2 is the first term1 commit" bisect_result &&
 844        git bisect log >log_to_replay.txt &&
 845        git bisect reset
 846'
 847
 848test_expect_success 'bisect cannot mix terms' '
 849        git bisect reset &&
 850        git bisect start --term-good term1 --term-bad term2 $HASH4 $HASH1 &&
 851        test_must_fail git bisect a &&
 852        test_must_fail git bisect b &&
 853        test_must_fail git bisect bad &&
 854        test_must_fail git bisect good &&
 855        test_must_fail git bisect new &&
 856        test_must_fail git bisect old
 857'
 858
 859test_expect_success 'bisect terms rejects invalid terms' '
 860        git bisect reset &&
 861        test_must_fail git bisect start --term-good invalid..term &&
 862        test_must_fail git bisect terms --term-bad invalid..term &&
 863        test_must_fail git bisect terms --term-good bad &&
 864        test_must_fail git bisect terms --term-good old &&
 865        test_must_fail git bisect terms --term-good skip &&
 866        test_must_fail git bisect terms --term-good reset &&
 867        test_path_is_missing .git/BISECT_TERMS
 868'
 869
 870test_expect_success 'bisect start --term-* does store terms' '
 871        git bisect reset &&
 872        git bisect start --term-bad=one --term-good=two &&
 873        git bisect terms >actual &&
 874        cat <<-EOF >expected &&
 875        Your current terms are two for the old state
 876        and one for the new state.
 877        EOF
 878        test_i18ncmp expected actual &&
 879        git bisect terms --term-bad >actual &&
 880        echo one >expected &&
 881        test_cmp expected actual &&
 882        git bisect terms --term-good >actual &&
 883        echo two >expected &&
 884        test_cmp expected actual
 885'
 886
 887test_expect_success 'bisect start takes options and revs in any order' '
 888        git bisect reset &&
 889        git bisect start --term-good one $HASH4 \
 890                --term-good two --term-bad bad-term \
 891                $HASH1 --term-good three -- &&
 892        (git bisect terms --term-bad && git bisect terms --term-good) >actual &&
 893        printf "%s\n%s\n" bad-term three >expected &&
 894        test_cmp expected actual
 895'
 896
 897test_expect_success 'git bisect reset cleans bisection state properly' '
 898        git bisect reset &&
 899        git bisect start &&
 900        git bisect good $HASH1 &&
 901        git bisect bad $HASH4 &&
 902        git bisect reset &&
 903        test -z "$(git for-each-ref "refs/bisect/*")" &&
 904        test_path_is_missing "$GIT_DIR/BISECT_EXPECTED_REV" &&
 905        test_path_is_missing "$GIT_DIR/BISECT_ANCESTORS_OK" &&
 906        test_path_is_missing "$GIT_DIR/BISECT_LOG" &&
 907        test_path_is_missing "$GIT_DIR/BISECT_RUN" &&
 908        test_path_is_missing "$GIT_DIR/BISECT_TERMS" &&
 909        test_path_is_missing "$GIT_DIR/head-name" &&
 910        test_path_is_missing "$GIT_DIR/BISECT_HEAD" &&
 911        test_path_is_missing "$GIT_DIR/BISECT_START"
 912'
 913
 914test_done