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t / t6030-bisect-porcelain.shon commit Merge branch 'jc/unused-symbols' (c985aaf)
   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 || return 1
  56
  57        if git bisect next
  58        then
  59                echo Oops, should have failed.
  60                false
  61        else
  62                :
  63        fi
  64'
  65
  66test_expect_success 'bisect start with one bad and good' '
  67        git bisect reset &&
  68        git bisect start &&
  69        git bisect good $HASH1 &&
  70        git bisect bad $HASH4 &&
  71        git bisect next
  72'
  73
  74test_expect_success 'bisect fails if given any junk instead of revs' '
  75        git bisect reset &&
  76        test_must_fail git bisect start foo $HASH1 -- &&
  77        test_must_fail git bisect start $HASH4 $HASH1 bar -- &&
  78        test -z "$(git for-each-ref "refs/bisect/*")" &&
  79        test -z "$(ls .git/BISECT_* 2>/dev/null)" &&
  80        git bisect start &&
  81        test_must_fail git bisect good foo $HASH1 &&
  82        test_must_fail git bisect good $HASH1 bar &&
  83        test_must_fail git bisect bad frotz &&
  84        test_must_fail git bisect bad $HASH3 $HASH4 &&
  85        test_must_fail git bisect skip bar $HASH3 &&
  86        test_must_fail git bisect skip $HASH1 foo &&
  87        test -z "$(git for-each-ref "refs/bisect/*")" &&
  88        git bisect good $HASH1 &&
  89        git bisect bad $HASH4
  90'
  91
  92test_expect_success 'bisect reset: back in the master branch' '
  93        git bisect reset &&
  94        echo "* master" > branch.expect &&
  95        git branch > branch.output &&
  96        cmp branch.expect branch.output
  97'
  98
  99test_expect_success 'bisect reset: back in another branch' '
 100        git checkout -b other &&
 101        git bisect start &&
 102        git bisect good $HASH1 &&
 103        git bisect bad $HASH3 &&
 104        git bisect reset &&
 105        echo "  master" > branch.expect &&
 106        echo "* other" >> branch.expect &&
 107        git branch > branch.output &&
 108        cmp branch.expect branch.output
 109'
 110
 111test_expect_success 'bisect reset when not bisecting' '
 112        git bisect reset &&
 113        git branch > branch.output &&
 114        cmp branch.expect branch.output
 115'
 116
 117test_expect_success 'bisect reset removes packed refs' '
 118        git bisect reset &&
 119        git bisect start &&
 120        git bisect good $HASH1 &&
 121        git bisect bad $HASH3 &&
 122        git pack-refs --all --prune &&
 123        git bisect next &&
 124        git bisect reset &&
 125        test -z "$(git for-each-ref "refs/bisect/*")" &&
 126        test -z "$(git for-each-ref "refs/heads/bisect")"
 127'
 128
 129test_expect_success 'bisect reset removes bisect state after --no-checkout' '
 130        git bisect reset &&
 131        git bisect start --no-checkout &&
 132        git bisect good $HASH1 &&
 133        git bisect bad $HASH3 &&
 134        git bisect next &&
 135        git bisect reset &&
 136        test -z "$(git for-each-ref "refs/bisect/*")" &&
 137        test -z "$(git for-each-ref "refs/heads/bisect")" &&
 138        test -z "$(git for-each-ref "BISECT_HEAD")"
 139'
 140
 141test_expect_success 'bisect start: back in good branch' '
 142        git branch > branch.output &&
 143        grep "* other" branch.output > /dev/null &&
 144        git bisect start $HASH4 $HASH1 -- &&
 145        git bisect good &&
 146        git bisect start $HASH4 $HASH1 -- &&
 147        git bisect bad &&
 148        git bisect reset &&
 149        git branch > branch.output &&
 150        grep "* other" branch.output > /dev/null
 151'
 152
 153test_expect_success 'bisect start: no ".git/BISECT_START" created if junk rev' '
 154        git bisect reset &&
 155        test_must_fail git bisect start $HASH4 foo -- &&
 156        git branch > branch.output &&
 157        grep "* other" branch.output > /dev/null &&
 158        test_must_fail test -e .git/BISECT_START
 159'
 160
 161test_expect_success 'bisect start: existing ".git/BISECT_START" not modified if junk rev' '
 162        git bisect start $HASH4 $HASH1 -- &&
 163        git bisect good &&
 164        cp .git/BISECT_START saved &&
 165        test_must_fail git bisect start $HASH4 foo -- &&
 166        git branch > branch.output &&
 167        test_i18ngrep "* (no branch, bisect started on other)" branch.output > /dev/null &&
 168        test_cmp saved .git/BISECT_START
 169'
 170test_expect_success 'bisect start: no ".git/BISECT_START" if mistaken rev' '
 171        git bisect start $HASH4 $HASH1 -- &&
 172        git bisect good &&
 173        test_must_fail git bisect start $HASH1 $HASH4 -- &&
 174        git branch > branch.output &&
 175        grep "* other" branch.output > /dev/null &&
 176        test_must_fail test -e .git/BISECT_START
 177'
 178
 179test_expect_success 'bisect start: no ".git/BISECT_START" if checkout error' '
 180        echo "temp stuff" > hello &&
 181        test_must_fail git bisect start $HASH4 $HASH1 -- &&
 182        git branch &&
 183        git branch > branch.output &&
 184        grep "* other" branch.output > /dev/null &&
 185        test_must_fail test -e .git/BISECT_START &&
 186        test -z "$(git for-each-ref "refs/bisect/*")" &&
 187        git checkout HEAD hello
 188'
 189
 190# $HASH1 is good, $HASH4 is bad, we skip $HASH3
 191# but $HASH2 is bad,
 192# so we should find $HASH2 as the first bad commit
 193test_expect_success 'bisect skip: successful result' '
 194        git bisect reset &&
 195        git bisect start $HASH4 $HASH1 &&
 196        git bisect skip &&
 197        git bisect bad > my_bisect_log.txt &&
 198        grep "$HASH2 is the first bad commit" my_bisect_log.txt &&
 199        git bisect reset
 200'
 201
 202# $HASH1 is good, $HASH4 is bad, we skip $HASH3 and $HASH2
 203# so we should not be able to tell the first bad commit
 204# among $HASH2, $HASH3 and $HASH4
 205test_expect_success 'bisect skip: cannot tell between 3 commits' '
 206        git bisect start $HASH4 $HASH1 &&
 207        git bisect skip || return 1
 208
 209        if git bisect skip > my_bisect_log.txt
 210        then
 211                echo Oops, should have failed.
 212                false
 213        else
 214                test $? -eq 2 &&
 215                grep "first bad commit could be any of" my_bisect_log.txt &&
 216                ! grep $HASH1 my_bisect_log.txt &&
 217                grep $HASH2 my_bisect_log.txt &&
 218                grep $HASH3 my_bisect_log.txt &&
 219                grep $HASH4 my_bisect_log.txt &&
 220                git bisect reset
 221        fi
 222'
 223
 224# $HASH1 is good, $HASH4 is bad, we skip $HASH3
 225# but $HASH2 is good,
 226# so we should not be able to tell the first bad commit
 227# among $HASH3 and $HASH4
 228test_expect_success 'bisect skip: cannot tell between 2 commits' '
 229        git bisect start $HASH4 $HASH1 &&
 230        git bisect skip || return 1
 231
 232        if git bisect good > my_bisect_log.txt
 233        then
 234                echo Oops, should have failed.
 235                false
 236        else
 237                test $? -eq 2 &&
 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                git bisect reset
 244        fi
 245'
 246
 247# $HASH1 is good, $HASH4 is both skipped and bad, we skip $HASH3
 248# and $HASH2 is good,
 249# so we should not be able to tell the first bad commit
 250# among $HASH3 and $HASH4
 251test_expect_success 'bisect skip: with commit both bad and skipped' '
 252        git bisect start &&
 253        git bisect skip &&
 254        git bisect bad &&
 255        git bisect good $HASH1 &&
 256        git bisect skip &&
 257        if git bisect good > my_bisect_log.txt
 258        then
 259                echo Oops, should have failed.
 260                false
 261        else
 262                test $? -eq 2 &&
 263                grep "first bad commit could be any of" my_bisect_log.txt &&
 264                ! grep $HASH1 my_bisect_log.txt &&
 265                ! grep $HASH2 my_bisect_log.txt &&
 266                grep $HASH3 my_bisect_log.txt &&
 267                grep $HASH4 my_bisect_log.txt &&
 268                git bisect reset
 269        fi
 270'
 271
 272# We want to automatically find the commit that
 273# introduced "Another" into hello.
 274test_expect_success \
 275    '"git bisect run" simple case' \
 276    'echo "#"\!"/bin/sh" > test_script.sh &&
 277     echo "grep Another hello > /dev/null" >> test_script.sh &&
 278     echo "test \$? -ne 0" >> test_script.sh &&
 279     chmod +x test_script.sh &&
 280     git bisect start &&
 281     git bisect good $HASH1 &&
 282     git bisect bad $HASH4 &&
 283     git bisect run ./test_script.sh > my_bisect_log.txt &&
 284     grep "$HASH3 is the first bad commit" my_bisect_log.txt &&
 285     git bisect reset'
 286
 287# We want to automatically find the commit that
 288# introduced "Ciao" into hello.
 289test_expect_success \
 290    '"git bisect run" with more complex "git bisect start"' \
 291    'echo "#"\!"/bin/sh" > test_script.sh &&
 292     echo "grep Ciao hello > /dev/null" >> test_script.sh &&
 293     echo "test \$? -ne 0" >> test_script.sh &&
 294     chmod +x test_script.sh &&
 295     git bisect start $HASH4 $HASH1 &&
 296     git bisect run ./test_script.sh > my_bisect_log.txt &&
 297     grep "$HASH4 is the first bad commit" my_bisect_log.txt &&
 298     git bisect reset'
 299
 300# $HASH1 is good, $HASH5 is bad, we skip $HASH3
 301# but $HASH4 is good,
 302# so we should find $HASH5 as the first bad commit
 303HASH5=
 304test_expect_success 'bisect skip: add line and then a new test' '
 305        add_line_into_file "5: Another new line." hello &&
 306        HASH5=$(git rev-parse --verify HEAD) &&
 307        git bisect start $HASH5 $HASH1 &&
 308        git bisect skip &&
 309        git bisect good > my_bisect_log.txt &&
 310        grep "$HASH5 is the first bad commit" my_bisect_log.txt &&
 311        git bisect log > log_to_replay.txt &&
 312        git bisect reset
 313'
 314
 315test_expect_success 'bisect skip and bisect replay' '
 316        git bisect replay log_to_replay.txt > my_bisect_log.txt &&
 317        grep "$HASH5 is the first bad commit" my_bisect_log.txt &&
 318        git bisect reset
 319'
 320
 321HASH6=
 322test_expect_success 'bisect run & skip: cannot tell between 2' '
 323        add_line_into_file "6: Yet a line." hello &&
 324        HASH6=$(git rev-parse --verify HEAD) &&
 325        echo "#"\!"/bin/sh" > test_script.sh &&
 326        echo "sed -ne \\\$p hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
 327        echo "grep line hello > /dev/null" >> test_script.sh &&
 328        echo "test \$? -ne 0" >> test_script.sh &&
 329        chmod +x test_script.sh &&
 330        git bisect start $HASH6 $HASH1 &&
 331        if git bisect run ./test_script.sh > my_bisect_log.txt
 332        then
 333                echo Oops, should have failed.
 334                false
 335        else
 336                test $? -eq 2 &&
 337                grep "first bad commit could be any of" my_bisect_log.txt &&
 338                ! grep $HASH3 my_bisect_log.txt &&
 339                ! grep $HASH6 my_bisect_log.txt &&
 340                grep $HASH4 my_bisect_log.txt &&
 341                grep $HASH5 my_bisect_log.txt
 342        fi
 343'
 344
 345HASH7=
 346test_expect_success 'bisect run & skip: find first bad' '
 347        git bisect reset &&
 348        add_line_into_file "7: Should be the last line." hello &&
 349        HASH7=$(git rev-parse --verify HEAD) &&
 350        echo "#"\!"/bin/sh" > test_script.sh &&
 351        echo "sed -ne \\\$p hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
 352        echo "sed -ne \\\$p hello | grep day > /dev/null && exit 125" >> test_script.sh &&
 353        echo "grep Yet hello > /dev/null" >> test_script.sh &&
 354        echo "test \$? -ne 0" >> test_script.sh &&
 355        chmod +x test_script.sh &&
 356        git bisect start $HASH7 $HASH1 &&
 357        git bisect run ./test_script.sh > my_bisect_log.txt &&
 358        grep "$HASH6 is the first bad commit" my_bisect_log.txt
 359'
 360
 361test_expect_success 'bisect skip only one range' '
 362        git bisect reset &&
 363        git bisect start $HASH7 $HASH1 &&
 364        git bisect skip $HASH1..$HASH5 &&
 365        test "$HASH6" = "$(git rev-parse --verify HEAD)" &&
 366        test_must_fail git bisect bad > my_bisect_log.txt &&
 367        grep "first bad commit could be any of" my_bisect_log.txt
 368'
 369
 370test_expect_success 'bisect skip many ranges' '
 371        git bisect start $HASH7 $HASH1 &&
 372        test "$HASH4" = "$(git rev-parse --verify HEAD)" &&
 373        git bisect skip $HASH2 $HASH2.. ..$HASH5 &&
 374        test "$HASH6" = "$(git rev-parse --verify HEAD)" &&
 375        test_must_fail git bisect bad > my_bisect_log.txt &&
 376        grep "first bad commit could be any of" my_bisect_log.txt
 377'
 378
 379test_expect_success 'bisect starting with a detached HEAD' '
 380        git bisect reset &&
 381        git checkout master^ &&
 382        HEAD=$(git rev-parse --verify HEAD) &&
 383        git bisect start &&
 384        test $HEAD = $(cat .git/BISECT_START) &&
 385        git bisect reset &&
 386        test $HEAD = $(git rev-parse --verify HEAD)
 387'
 388
 389test_expect_success 'bisect errors out if bad and good are mistaken' '
 390        git bisect reset &&
 391        test_must_fail git bisect start $HASH2 $HASH4 2> rev_list_error &&
 392        grep "mistake good and bad" rev_list_error &&
 393        git bisect reset
 394'
 395
 396test_expect_success 'bisect does not create a "bisect" branch' '
 397        git bisect reset &&
 398        git bisect start $HASH7 $HASH1 &&
 399        git branch bisect &&
 400        rev_hash4=$(git rev-parse --verify HEAD) &&
 401        test "$rev_hash4" = "$HASH4" &&
 402        git branch -D bisect &&
 403        git bisect good &&
 404        git branch bisect &&
 405        rev_hash6=$(git rev-parse --verify HEAD) &&
 406        test "$rev_hash6" = "$HASH6" &&
 407        git bisect good > my_bisect_log.txt &&
 408        grep "$HASH7 is the first bad commit" my_bisect_log.txt &&
 409        git bisect reset &&
 410        rev_hash6=$(git rev-parse --verify bisect) &&
 411        test "$rev_hash6" = "$HASH6" &&
 412        git branch -D bisect
 413'
 414
 415# This creates a "side" branch to test "siblings" cases.
 416#
 417# H1-H2-H3-H4-H5-H6-H7  <--other
 418#            \
 419#             S5-S6-S7  <--side
 420#
 421test_expect_success 'side branch creation' '
 422        git bisect reset &&
 423        git checkout -b side $HASH4 &&
 424        add_line_into_file "5(side): first line on a side branch" hello2 &&
 425        SIDE_HASH5=$(git rev-parse --verify HEAD) &&
 426        add_line_into_file "6(side): second line on a side branch" hello2 &&
 427        SIDE_HASH6=$(git rev-parse --verify HEAD) &&
 428        add_line_into_file "7(side): third line on a side branch" hello2 &&
 429        SIDE_HASH7=$(git rev-parse --verify HEAD)
 430'
 431
 432test_expect_success 'good merge base when good and bad are siblings' '
 433        git bisect start "$HASH7" "$SIDE_HASH7" > my_bisect_log.txt &&
 434        grep "merge base must be tested" my_bisect_log.txt &&
 435        grep $HASH4 my_bisect_log.txt &&
 436        git bisect good > my_bisect_log.txt &&
 437        test_must_fail grep "merge base must be tested" my_bisect_log.txt &&
 438        grep $HASH6 my_bisect_log.txt &&
 439        git bisect reset
 440'
 441test_expect_success 'skipped merge base when good and bad are siblings' '
 442        git bisect start "$SIDE_HASH7" "$HASH7" > my_bisect_log.txt &&
 443        grep "merge base must be tested" my_bisect_log.txt &&
 444        grep $HASH4 my_bisect_log.txt &&
 445        git bisect skip > my_bisect_log.txt 2>&1 &&
 446        grep "warning" my_bisect_log.txt &&
 447        grep $SIDE_HASH6 my_bisect_log.txt &&
 448        git bisect reset
 449'
 450
 451test_expect_success 'bad merge base when good and bad are siblings' '
 452        git bisect start "$HASH7" HEAD > my_bisect_log.txt &&
 453        grep "merge base must be tested" my_bisect_log.txt &&
 454        grep $HASH4 my_bisect_log.txt &&
 455        test_must_fail git bisect bad > my_bisect_log.txt 2>&1 &&
 456        grep "merge base $HASH4 is bad" my_bisect_log.txt &&
 457        grep "fixed between $HASH4 and \[$SIDE_HASH7\]" my_bisect_log.txt &&
 458        git bisect reset
 459'
 460
 461# This creates a few more commits (A and B) to test "siblings" cases
 462# when a good and a bad rev have many merge bases.
 463#
 464# We should have the following:
 465#
 466# H1-H2-H3-H4-H5-H6-H7
 467#            \  \     \
 468#             S5-A     \
 469#              \        \
 470#               S6-S7----B
 471#
 472# And there A and B have 2 merge bases (S5 and H5) that should be
 473# reported by "git merge-base --all A B".
 474#
 475test_expect_success 'many merge bases creation' '
 476        git checkout "$SIDE_HASH5" &&
 477        git merge -m "merge HASH5 and SIDE_HASH5" "$HASH5" &&
 478        A_HASH=$(git rev-parse --verify HEAD) &&
 479        git checkout side &&
 480        git merge -m "merge HASH7 and SIDE_HASH7" "$HASH7" &&
 481        B_HASH=$(git rev-parse --verify HEAD) &&
 482        git merge-base --all "$A_HASH" "$B_HASH" > merge_bases.txt &&
 483        test_line_count = 2 merge_bases.txt &&
 484        grep "$HASH5" merge_bases.txt &&
 485        grep "$SIDE_HASH5" merge_bases.txt
 486'
 487
 488test_expect_success 'good merge bases when good and bad are siblings' '
 489        git bisect start "$B_HASH" "$A_HASH" > my_bisect_log.txt &&
 490        grep "merge base must be tested" my_bisect_log.txt &&
 491        git bisect good > my_bisect_log2.txt &&
 492        grep "merge base must be tested" my_bisect_log2.txt &&
 493        {
 494                {
 495                        grep "$SIDE_HASH5" my_bisect_log.txt &&
 496                        grep "$HASH5" my_bisect_log2.txt
 497                } || {
 498                        grep "$SIDE_HASH5" my_bisect_log2.txt &&
 499                        grep "$HASH5" my_bisect_log.txt
 500                }
 501        } &&
 502        git bisect reset
 503'
 504
 505test_expect_success 'optimized merge base checks' '
 506        git bisect start "$HASH7" "$SIDE_HASH7" > my_bisect_log.txt &&
 507        grep "merge base must be tested" my_bisect_log.txt &&
 508        grep "$HASH4" my_bisect_log.txt &&
 509        git bisect good > my_bisect_log2.txt &&
 510        test -f ".git/BISECT_ANCESTORS_OK" &&
 511        test "$HASH6" = $(git rev-parse --verify HEAD) &&
 512        git bisect bad > my_bisect_log3.txt &&
 513        git bisect good "$A_HASH" > my_bisect_log4.txt &&
 514        grep "merge base must be tested" my_bisect_log4.txt &&
 515        test_must_fail test -f ".git/BISECT_ANCESTORS_OK"
 516'
 517
 518# This creates another side branch called "parallel" with some files
 519# in some directories, to test bisecting with paths.
 520#
 521# We should have the following:
 522#
 523#    P1-P2-P3-P4-P5-P6-P7
 524#   /        /        /
 525# H1-H2-H3-H4-H5-H6-H7
 526#            \  \     \
 527#             S5-A     \
 528#              \        \
 529#               S6-S7----B
 530#
 531test_expect_success '"parallel" side branch creation' '
 532        git bisect reset &&
 533        git checkout -b parallel $HASH1 &&
 534        mkdir dir1 dir2 &&
 535        add_line_into_file "1(para): line 1 on parallel branch" dir1/file1 &&
 536        PARA_HASH1=$(git rev-parse --verify HEAD) &&
 537        add_line_into_file "2(para): line 2 on parallel branch" dir2/file2 &&
 538        PARA_HASH2=$(git rev-parse --verify HEAD) &&
 539        add_line_into_file "3(para): line 3 on parallel branch" dir2/file3 &&
 540        PARA_HASH3=$(git rev-parse --verify HEAD) &&
 541        git merge -m "merge HASH4 and PARA_HASH3" "$HASH4" &&
 542        PARA_HASH4=$(git rev-parse --verify HEAD) &&
 543        add_line_into_file "5(para): add line on parallel branch" dir1/file1 &&
 544        PARA_HASH5=$(git rev-parse --verify HEAD) &&
 545        add_line_into_file "6(para): add line on parallel branch" dir2/file2 &&
 546        PARA_HASH6=$(git rev-parse --verify HEAD) &&
 547        git merge -m "merge HASH7 and PARA_HASH6" "$HASH7" &&
 548        PARA_HASH7=$(git rev-parse --verify HEAD)
 549'
 550
 551test_expect_success 'restricting bisection on one dir' '
 552        git bisect reset &&
 553        git bisect start HEAD $HASH1 -- dir1 &&
 554        para1=$(git rev-parse --verify HEAD) &&
 555        test "$para1" = "$PARA_HASH1" &&
 556        git bisect bad > my_bisect_log.txt &&
 557        grep "$PARA_HASH1 is the first bad commit" my_bisect_log.txt
 558'
 559
 560test_expect_success 'restricting bisection on one dir and a file' '
 561        git bisect reset &&
 562        git bisect start HEAD $HASH1 -- dir1 hello &&
 563        para4=$(git rev-parse --verify HEAD) &&
 564        test "$para4" = "$PARA_HASH4" &&
 565        git bisect bad &&
 566        hash3=$(git rev-parse --verify HEAD) &&
 567        test "$hash3" = "$HASH3" &&
 568        git bisect good &&
 569        hash4=$(git rev-parse --verify HEAD) &&
 570        test "$hash4" = "$HASH4" &&
 571        git bisect good &&
 572        para1=$(git rev-parse --verify HEAD) &&
 573        test "$para1" = "$PARA_HASH1" &&
 574        git bisect good > my_bisect_log.txt &&
 575        grep "$PARA_HASH4 is the first bad commit" my_bisect_log.txt
 576'
 577
 578test_expect_success 'skipping away from skipped commit' '
 579        git bisect start $PARA_HASH7 $HASH1 &&
 580        para4=$(git rev-parse --verify HEAD) &&
 581        test "$para4" = "$PARA_HASH4" &&
 582        git bisect skip &&
 583        hash7=$(git rev-parse --verify HEAD) &&
 584        test "$hash7" = "$HASH7" &&
 585        git bisect skip &&
 586        para3=$(git rev-parse --verify HEAD) &&
 587        test "$para3" = "$PARA_HASH3"
 588'
 589
 590test_expect_success 'erroring out when using bad path parameters' '
 591        test_must_fail git bisect start $PARA_HASH7 $HASH1 -- foobar 2> error.txt &&
 592        grep "bad path parameters" error.txt
 593'
 594
 595test_expect_success 'test bisection on bare repo - --no-checkout specified' '
 596        git clone --bare . bare.nocheckout &&
 597        (
 598                cd bare.nocheckout &&
 599                git bisect start --no-checkout &&
 600                git bisect good $HASH1 &&
 601                git bisect bad $HASH4 &&
 602                git bisect run eval \
 603                        "test \$(git rev-list BISECT_HEAD ^$HASH2 --max-count=1 | wc -l) = 0" \
 604                        >../nocheckout.log &&
 605                git bisect reset
 606        ) &&
 607        grep "$HASH3 is the first bad commit" nocheckout.log
 608'
 609
 610
 611test_expect_success 'test bisection on bare repo - --no-checkout defaulted' '
 612        git clone --bare . bare.defaulted &&
 613        (
 614                cd bare.defaulted &&
 615                git bisect start &&
 616                git bisect good $HASH1 &&
 617                git bisect bad $HASH4 &&
 618                git bisect run eval \
 619                        "test \$(git rev-list BISECT_HEAD ^$HASH2 --max-count=1 | wc -l) = 0" \
 620                        >../defaulted.log &&
 621                git bisect reset
 622        ) &&
 623        grep "$HASH3 is the first bad commit" defaulted.log
 624'
 625
 626#
 627# This creates a broken branch which cannot be checked out because
 628# the tree created has been deleted.
 629#
 630# H1-H2-H3-H4-H5-H6-H7  <--other
 631#            \
 632#             S5-S6'-S7'-S8'-S9  <--broken
 633#
 634# Commits marked with ' have a missing tree.
 635#
 636test_expect_success 'broken branch creation' '
 637        git bisect reset &&
 638        git checkout -b broken $HASH4 &&
 639        git tag BROKEN_HASH4 $HASH4 &&
 640        add_line_into_file "5(broken): first line on a broken branch" hello2 &&
 641        git tag BROKEN_HASH5 &&
 642        mkdir missing &&
 643        :> missing/MISSING &&
 644        git add missing/MISSING &&
 645        git commit -m "6(broken): Added file that will be deleted"
 646        git tag BROKEN_HASH6 &&
 647        add_line_into_file "7(broken): second line on a broken branch" hello2 &&
 648        git tag BROKEN_HASH7 &&
 649        add_line_into_file "8(broken): third line on a broken branch" hello2 &&
 650        git tag BROKEN_HASH8 &&
 651        git rm missing/MISSING &&
 652        git commit -m "9(broken): Remove missing file"
 653        git tag BROKEN_HASH9 &&
 654        rm .git/objects/39/f7e61a724187ab767d2e08442d9b6b9dab587d
 655'
 656
 657echo "" > expected.ok
 658cat > expected.missing-tree.default <<EOF
 659fatal: unable to read tree 39f7e61a724187ab767d2e08442d9b6b9dab587d
 660EOF
 661
 662test_expect_success 'bisect fails if tree is broken on start commit' '
 663        git bisect reset &&
 664        test_must_fail git bisect start BROKEN_HASH7 BROKEN_HASH4 2>error.txt &&
 665        test_cmp expected.missing-tree.default error.txt
 666'
 667
 668test_expect_success 'bisect fails if tree is broken on trial commit' '
 669        git bisect reset &&
 670        test_must_fail git bisect start BROKEN_HASH9 BROKEN_HASH4 2>error.txt &&
 671        git reset --hard broken &&
 672        git checkout broken &&
 673        test_cmp expected.missing-tree.default error.txt
 674'
 675
 676check_same()
 677{
 678        echo "Checking $1 is the same as $2" &&
 679        test_cmp_rev "$1" "$2"
 680}
 681
 682test_expect_success 'bisect: --no-checkout - start commit bad' '
 683        git bisect reset &&
 684        git bisect start BROKEN_HASH7 BROKEN_HASH4 --no-checkout &&
 685        check_same BROKEN_HASH6 BISECT_HEAD &&
 686        git bisect reset
 687'
 688
 689test_expect_success 'bisect: --no-checkout - trial commit bad' '
 690        git bisect reset &&
 691        git bisect start broken BROKEN_HASH4 --no-checkout &&
 692        check_same BROKEN_HASH6 BISECT_HEAD &&
 693        git bisect reset
 694'
 695
 696test_expect_success 'bisect: --no-checkout - target before breakage' '
 697        git bisect reset &&
 698        git bisect start broken BROKEN_HASH4 --no-checkout &&
 699        check_same BROKEN_HASH6 BISECT_HEAD &&
 700        git bisect bad BISECT_HEAD &&
 701        check_same BROKEN_HASH5 BISECT_HEAD &&
 702        git bisect bad BISECT_HEAD &&
 703        check_same BROKEN_HASH5 bisect/bad &&
 704        git bisect reset
 705'
 706
 707test_expect_success 'bisect: --no-checkout - target in breakage' '
 708        git bisect reset &&
 709        git bisect start broken BROKEN_HASH4 --no-checkout &&
 710        check_same BROKEN_HASH6 BISECT_HEAD &&
 711        git bisect bad BISECT_HEAD &&
 712        check_same BROKEN_HASH5 BISECT_HEAD &&
 713        git bisect good BISECT_HEAD &&
 714        check_same BROKEN_HASH6 bisect/bad &&
 715        git bisect reset
 716'
 717
 718test_expect_success 'bisect: --no-checkout - target after breakage' '
 719        git bisect reset &&
 720        git bisect start broken BROKEN_HASH4 --no-checkout &&
 721        check_same BROKEN_HASH6 BISECT_HEAD &&
 722        git bisect good BISECT_HEAD &&
 723        check_same BROKEN_HASH8 BISECT_HEAD &&
 724        git bisect good BISECT_HEAD &&
 725        check_same BROKEN_HASH9 bisect/bad &&
 726        git bisect reset
 727'
 728
 729test_expect_success 'bisect: demonstrate identification of damage boundary' "
 730        git bisect reset &&
 731        git checkout broken &&
 732        git bisect start broken master --no-checkout &&
 733        git bisect run \"\$SHELL_PATH\" -c '
 734                GOOD=\$(git for-each-ref \"--format=%(objectname)\" refs/bisect/good-*) &&
 735                git rev-list --objects BISECT_HEAD --not \$GOOD >tmp.\$\$ &&
 736                git pack-objects --stdout >/dev/null < tmp.\$\$
 737                rc=\$?
 738                rm -f tmp.\$\$
 739                test \$rc = 0' &&
 740        check_same BROKEN_HASH6 bisect/bad &&
 741        git bisect reset
 742"
 743
 744cat > expected.bisect-log <<EOF
 745# bad: [32a594a3fdac2d57cf6d02987e30eec68511498c] Add <4: Ciao for now> into <hello>.
 746# good: [7b7f204a749c3125d5224ed61ea2ae1187ad046f] Add <2: A new day for git> into <hello>.
 747git bisect start '32a594a3fdac2d57cf6d02987e30eec68511498c' '7b7f204a749c3125d5224ed61ea2ae1187ad046f'
 748# good: [3de952f2416b6084f557ec417709eac740c6818c] Add <3: Another new day for git> into <hello>.
 749git bisect good 3de952f2416b6084f557ec417709eac740c6818c
 750# first bad commit: [32a594a3fdac2d57cf6d02987e30eec68511498c] Add <4: Ciao for now> into <hello>.
 751EOF
 752
 753test_expect_success 'bisect log: successfull result' '
 754        git bisect reset &&
 755        git bisect start $HASH4 $HASH2 &&
 756        git bisect good &&
 757        git bisect log >bisect-log.txt &&
 758        test_cmp expected.bisect-log bisect-log.txt &&
 759        git bisect reset
 760'
 761
 762cat > expected.bisect-skip-log <<EOF
 763# bad: [32a594a3fdac2d57cf6d02987e30eec68511498c] Add <4: Ciao for now> into <hello>.
 764# good: [7b7f204a749c3125d5224ed61ea2ae1187ad046f] Add <2: A new day for git> into <hello>.
 765git bisect start '32a594a3fdac2d57cf6d02987e30eec68511498c' '7b7f204a749c3125d5224ed61ea2ae1187ad046f'
 766# skip: [3de952f2416b6084f557ec417709eac740c6818c] Add <3: Another new day for git> into <hello>.
 767git bisect skip 3de952f2416b6084f557ec417709eac740c6818c
 768# only skipped commits left to test
 769# possible first bad commit: [32a594a3fdac2d57cf6d02987e30eec68511498c] Add <4: Ciao for now> into <hello>.
 770# possible first bad commit: [3de952f2416b6084f557ec417709eac740c6818c] Add <3: Another new day for git> into <hello>.
 771EOF
 772
 773test_expect_success 'bisect log: only skip commits left' '
 774        git bisect reset &&
 775        git bisect start $HASH4 $HASH2 &&
 776        test_must_fail git bisect skip &&
 777        git bisect log >bisect-skip-log.txt &&
 778        test_cmp expected.bisect-skip-log bisect-skip-log.txt &&
 779        git bisect reset
 780'
 781
 782test_expect_success '"git bisect bad HEAD" behaves as "git bisect bad"' '
 783        git checkout parallel &&
 784        git bisect start HEAD $HASH1 &&
 785        git bisect good HEAD &&
 786        git bisect bad HEAD &&
 787        test "$HASH6" = $(git rev-parse --verify HEAD) &&
 788        git bisect reset
 789'
 790
 791test_done