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 || 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
  66 test_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
  74 test_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_must_fail ls .git/BISECT_* &&
  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
  92 test_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
  99 test_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
 111 test_expect_success 'bisect reset when not bisecting' '
 112         git bisect reset &&
 113         git branch > branch.output &&
 114         cmp branch.expect branch.output
 115 '
 116
 117 test_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
 129 test_expect_success 'bisect start: back in good branch' '
 130         git branch > branch.output &&
 131         grep "* other" branch.output > /dev/null &&
 132         git bisect start $HASH4 $HASH1 -- &&
 133         git bisect good &&
 134         git bisect start $HASH4 $HASH1 -- &&
 135         git bisect bad &&
 136         git bisect reset &&
 137         git branch > branch.output &&
 138         grep "* other" branch.output > /dev/null
 139 '
 140
 141 test_expect_failure 'bisect start: no ".git/BISECT_START" if junk rev' '
 142         git bisect start $HASH4 $HASH1 -- &&
 143         git bisect good &&
 144         test_must_fail git bisect start $HASH4 foo -- &&
 145         git branch > branch.output &&
 146         grep "* other" branch.output > /dev/null &&
 147         test_must_fail test -e .git/BISECT_START
 148 '
 149
 150 test_expect_failure 'bisect start: no ".git/BISECT_START" if mistaken rev' '
 151         git bisect start $HASH4 $HASH1 -- &&
 152         git bisect good &&
 153         test_must_fail git bisect start $HASH1 $HASH4 -- &&
 154         git branch > branch.output &&
 155         grep "* other" branch.output > /dev/null &&
 156         test_must_fail test -e .git/BISECT_START
 157 '
 158
 159 test_expect_failure 'bisect start: no ".git/BISECT_START" if checkout error' '
 160         echo "temp stuff" > hello &&
 161         test_must_fail git bisect start $HASH4 $HASH1 -- &&
 162         git branch &&
 163         git branch > branch.output &&
 164         grep "* other" branch.output > /dev/null &&
 165         test_must_fail test -e .git/BISECT_START &&
 166         test -z "$(git for-each-ref "refs/bisect/*")"
 167 '
 168
 169 # This cleanup is needed whatever the result of the above test.
 170 git checkout HEAD hello
 171
 172 # $HASH1 is good, $HASH4 is bad, we skip $HASH3
 173 # but $HASH2 is bad,
 174 # so we should find $HASH2 as the first bad commit
 175 test_expect_success 'bisect skip: successfull result' '
 176         git bisect reset &&
 177         git bisect start $HASH4 $HASH1 &&
 178         git bisect skip &&
 179         git bisect bad > my_bisect_log.txt &&
 180         grep "$HASH2 is first bad commit" my_bisect_log.txt &&
 181         git bisect reset
 182 '
 183
 184 # $HASH1 is good, $HASH4 is bad, we skip $HASH3 and $HASH2
 185 # so we should not be able to tell the first bad commit
 186 # among $HASH2, $HASH3 and $HASH4
 187 test_expect_success 'bisect skip: cannot tell between 3 commits' '
 188         git bisect start $HASH4 $HASH1 &&
 189         git bisect skip || return 1
 190
 191         if git bisect skip > my_bisect_log.txt
 192         then
 193                 echo Oops, should have failed.
 194                 false
 195         else
 196                 test $? -eq 2 &&
 197                 grep "first bad commit could be any of" my_bisect_log.txt &&
 198                 ! grep $HASH1 my_bisect_log.txt &&
 199                 grep $HASH2 my_bisect_log.txt &&
 200                 grep $HASH3 my_bisect_log.txt &&
 201                 grep $HASH4 my_bisect_log.txt &&
 202                 git bisect reset
 203         fi
 204 '
 205
 206 # $HASH1 is good, $HASH4 is bad, we skip $HASH3
 207 # but $HASH2 is good,
 208 # so we should not be able to tell the first bad commit
 209 # among $HASH3 and $HASH4
 210 test_expect_success 'bisect skip: cannot tell between 2 commits' '
 211         git bisect start $HASH4 $HASH1 &&
 212         git bisect skip || return 1
 213
 214         if git bisect good > my_bisect_log.txt
 215         then
 216                 echo Oops, should have failed.
 217                 false
 218         else
 219                 test $? -eq 2 &&
 220                 grep "first bad commit could be any of" my_bisect_log.txt &&
 221                 ! grep $HASH1 my_bisect_log.txt &&
 222                 ! grep $HASH2 my_bisect_log.txt &&
 223                 grep $HASH3 my_bisect_log.txt &&
 224                 grep $HASH4 my_bisect_log.txt &&
 225                 git bisect reset
 226         fi
 227 '
 228
 229 # We want to automatically find the commit that
 230 # introduced "Another" into hello.
 231 test_expect_success \
 232     '"git bisect run" simple case' \
 233     'echo "#"\!"/bin/sh" > test_script.sh &&
 234      echo "grep Another hello > /dev/null" >> test_script.sh &&
 235      echo "test \$? -ne 0" >> test_script.sh &&
 236      chmod +x test_script.sh &&
 237      git bisect start &&
 238      git bisect good $HASH1 &&
 239      git bisect bad $HASH4 &&
 240      git bisect run ./test_script.sh > my_bisect_log.txt &&
 241      grep "$HASH3 is first bad commit" my_bisect_log.txt &&
 242      git bisect reset'
 243
 244 # We want to automatically find the commit that
 245 # introduced "Ciao" into hello.
 246 test_expect_success \
 247     '"git bisect run" with more complex "git bisect start"' \
 248     'echo "#"\!"/bin/sh" > test_script.sh &&
 249      echo "grep Ciao hello > /dev/null" >> test_script.sh &&
 250      echo "test \$? -ne 0" >> test_script.sh &&
 251      chmod +x test_script.sh &&
 252      git bisect start $HASH4 $HASH1 &&
 253      git bisect run ./test_script.sh > my_bisect_log.txt &&
 254      grep "$HASH4 is first bad commit" my_bisect_log.txt &&
 255      git bisect reset'
 256
 257 # $HASH1 is good, $HASH5 is bad, we skip $HASH3
 258 # but $HASH4 is good,
 259 # so we should find $HASH5 as the first bad commit
 260 HASH5=
 261 test_expect_success 'bisect skip: add line and then a new test' '
 262         add_line_into_file "5: Another new line." hello &&
 263         HASH5=$(git rev-parse --verify HEAD) &&
 264         git bisect start $HASH5 $HASH1 &&
 265         git bisect skip &&
 266         git bisect good > my_bisect_log.txt &&
 267         grep "$HASH5 is first bad commit" my_bisect_log.txt &&
 268         git bisect log > log_to_replay.txt &&
 269         git bisect reset
 270 '
 271
 272 test_expect_success 'bisect skip and bisect replay' '
 273         git bisect replay log_to_replay.txt > my_bisect_log.txt &&
 274         grep "$HASH5 is first bad commit" my_bisect_log.txt &&
 275         git bisect reset
 276 '
 277
 278 HASH6=
 279 test_expect_success 'bisect run & skip: cannot tell between 2' '
 280         add_line_into_file "6: Yet a line." hello &&
 281         HASH6=$(git rev-parse --verify HEAD) &&
 282         echo "#"\!"/bin/sh" > test_script.sh &&
 283         echo "sed -ne \\\$p hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
 284         echo "grep line hello > /dev/null" >> test_script.sh &&
 285         echo "test \$? -ne 0" >> test_script.sh &&
 286         chmod +x test_script.sh &&
 287         git bisect start $HASH6 $HASH1 &&
 288         if git bisect run ./test_script.sh > my_bisect_log.txt
 289         then
 290                 echo Oops, should have failed.
 291                 false
 292         else
 293                 test $? -eq 2 &&
 294                 grep "first bad commit could be any of" my_bisect_log.txt &&
 295                 ! grep $HASH3 my_bisect_log.txt &&
 296                 ! grep $HASH6 my_bisect_log.txt &&
 297                 grep $HASH4 my_bisect_log.txt &&
 298                 grep $HASH5 my_bisect_log.txt
 299         fi
 300 '
 301
 302 HASH7=
 303 test_expect_success 'bisect run & skip: find first bad' '
 304         git bisect reset &&
 305         add_line_into_file "7: Should be the last line." hello &&
 306         HASH7=$(git rev-parse --verify HEAD) &&
 307         echo "#"\!"/bin/sh" > test_script.sh &&
 308         echo "sed -ne \\\$p hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
 309         echo "sed -ne \\\$p hello | grep day > /dev/null && exit 125" >> test_script.sh &&
 310         echo "grep Yet hello > /dev/null" >> test_script.sh &&
 311         echo "test \$? -ne 0" >> test_script.sh &&
 312         chmod +x test_script.sh &&
 313         git bisect start $HASH7 $HASH1 &&
 314         git bisect run ./test_script.sh > my_bisect_log.txt &&
 315         grep "$HASH6 is first bad commit" my_bisect_log.txt
 316 '
 317
 318 test_expect_success 'bisect starting with a detached HEAD' '
 319
 320         git bisect reset &&
 321         git checkout master^ &&
 322         HEAD=$(git rev-parse --verify HEAD) &&
 323         git bisect start &&
 324         test $HEAD = $(cat .git/BISECT_START) &&
 325         git bisect reset &&
 326         test $HEAD = $(git rev-parse --verify HEAD)
 327
 328 '
 329
 330 test_expect_success 'bisect refuses to start if branch bisect exists' '
 331         git bisect reset &&
 332         git branch bisect &&
 333         test_must_fail git bisect start &&
 334         git branch -d bisect &&
 335         git checkout -b bisect &&
 336         test_must_fail git bisect start &&
 337         git checkout master &&
 338         git branch -d bisect
 339 '
 340
 341 test_expect_success 'bisect refuses to start if branch new-bisect exists' '
 342         git bisect reset &&
 343         git branch new-bisect &&
 344         test_must_fail git bisect start &&
 345         git branch -d new-bisect
 346 '
 347
 348 test_expect_success 'bisect errors out if bad and good are mistaken' '
 349         git bisect reset &&
 350         test_must_fail git bisect start $HASH2 $HASH4 2> rev_list_error &&
 351         grep "mistake good and bad" rev_list_error &&
 352         git bisect reset
 353 '
 354
 355 #
 356 #
 357 test_done