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 # $HASH1 is good, $HASH4 is bad, we skip $HASH3
 130 # but $HASH2 is bad,
 131 # so we should find $HASH2 as the first bad commit
 132 test_expect_success 'bisect skip: successfull result' '
 133         git bisect reset &&
 134         git bisect start $HASH4 $HASH1 &&
 135         git bisect skip &&
 136         git bisect bad > my_bisect_log.txt &&
 137         grep "$HASH2 is first bad commit" my_bisect_log.txt &&
 138         git bisect reset
 139 '
 140
 141 # $HASH1 is good, $HASH4 is bad, we skip $HASH3 and $HASH2
 142 # so we should not be able to tell the first bad commit
 143 # among $HASH2, $HASH3 and $HASH4
 144 test_expect_success 'bisect skip: cannot tell between 3 commits' '
 145         git bisect start $HASH4 $HASH1 &&
 146         git bisect skip || return 1
 147
 148         if git bisect skip > my_bisect_log.txt
 149         then
 150                 echo Oops, should have failed.
 151                 false
 152         else
 153                 test $? -eq 2 &&
 154                 grep "first bad commit could be any of" my_bisect_log.txt &&
 155                 ! grep $HASH1 my_bisect_log.txt &&
 156                 grep $HASH2 my_bisect_log.txt &&
 157                 grep $HASH3 my_bisect_log.txt &&
 158                 grep $HASH4 my_bisect_log.txt &&
 159                 git bisect reset
 160         fi
 161 '
 162
 163 # $HASH1 is good, $HASH4 is bad, we skip $HASH3
 164 # but $HASH2 is good,
 165 # so we should not be able to tell the first bad commit
 166 # among $HASH3 and $HASH4
 167 test_expect_success 'bisect skip: cannot tell between 2 commits' '
 168         git bisect start $HASH4 $HASH1 &&
 169         git bisect skip || return 1
 170
 171         if git bisect good > my_bisect_log.txt
 172         then
 173                 echo Oops, should have failed.
 174                 false
 175         else
 176                 test $? -eq 2 &&
 177                 grep "first bad commit could be any of" my_bisect_log.txt &&
 178                 ! grep $HASH1 my_bisect_log.txt &&
 179                 ! grep $HASH2 my_bisect_log.txt &&
 180                 grep $HASH3 my_bisect_log.txt &&
 181                 grep $HASH4 my_bisect_log.txt &&
 182                 git bisect reset
 183         fi
 184 '
 185
 186 # We want to automatically find the commit that
 187 # introduced "Another" into hello.
 188 test_expect_success \
 189     '"git bisect run" simple case' \
 190     'echo "#"\!"/bin/sh" > test_script.sh &&
 191      echo "grep Another hello > /dev/null" >> test_script.sh &&
 192      echo "test \$? -ne 0" >> test_script.sh &&
 193      chmod +x test_script.sh &&
 194      git bisect start &&
 195      git bisect good $HASH1 &&
 196      git bisect bad $HASH4 &&
 197      git bisect run ./test_script.sh > my_bisect_log.txt &&
 198      grep "$HASH3 is first bad commit" my_bisect_log.txt &&
 199      git bisect reset'
 200
 201 # We want to automatically find the commit that
 202 # introduced "Ciao" into hello.
 203 test_expect_success \
 204     '"git bisect run" with more complex "git bisect start"' \
 205     'echo "#"\!"/bin/sh" > test_script.sh &&
 206      echo "grep Ciao hello > /dev/null" >> test_script.sh &&
 207      echo "test \$? -ne 0" >> test_script.sh &&
 208      chmod +x test_script.sh &&
 209      git bisect start $HASH4 $HASH1 &&
 210      git bisect run ./test_script.sh > my_bisect_log.txt &&
 211      grep "$HASH4 is first bad commit" my_bisect_log.txt &&
 212      git bisect reset'
 213
 214 # $HASH1 is good, $HASH5 is bad, we skip $HASH3
 215 # but $HASH4 is good,
 216 # so we should find $HASH5 as the first bad commit
 217 HASH5=
 218 test_expect_success 'bisect skip: add line and then a new test' '
 219         add_line_into_file "5: Another new line." hello &&
 220         HASH5=$(git rev-parse --verify HEAD) &&
 221         git bisect start $HASH5 $HASH1 &&
 222         git bisect skip &&
 223         git bisect good > my_bisect_log.txt &&
 224         grep "$HASH5 is first bad commit" my_bisect_log.txt &&
 225         git bisect log > log_to_replay.txt &&
 226         git bisect reset
 227 '
 228
 229 test_expect_success 'bisect skip and bisect replay' '
 230         git bisect replay log_to_replay.txt > my_bisect_log.txt &&
 231         grep "$HASH5 is first bad commit" my_bisect_log.txt &&
 232         git bisect reset
 233 '
 234
 235 HASH6=
 236 test_expect_success 'bisect run & skip: cannot tell between 2' '
 237         add_line_into_file "6: Yet a line." hello &&
 238         HASH6=$(git rev-parse --verify HEAD) &&
 239         echo "#"\!"/bin/sh" > test_script.sh &&
 240         echo "sed -ne \\\$p hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
 241         echo "grep line hello > /dev/null" >> test_script.sh &&
 242         echo "test \$? -ne 0" >> test_script.sh &&
 243         chmod +x test_script.sh &&
 244         git bisect start $HASH6 $HASH1 &&
 245         if git bisect run ./test_script.sh > my_bisect_log.txt
 246         then
 247                 echo Oops, should have failed.
 248                 false
 249         else
 250                 test $? -eq 2 &&
 251                 grep "first bad commit could be any of" my_bisect_log.txt &&
 252                 ! grep $HASH3 my_bisect_log.txt &&
 253                 ! grep $HASH6 my_bisect_log.txt &&
 254                 grep $HASH4 my_bisect_log.txt &&
 255                 grep $HASH5 my_bisect_log.txt
 256         fi
 257 '
 258
 259 HASH7=
 260 test_expect_success 'bisect run & skip: find first bad' '
 261         git bisect reset &&
 262         add_line_into_file "7: Should be the last line." hello &&
 263         HASH7=$(git rev-parse --verify HEAD) &&
 264         echo "#"\!"/bin/sh" > test_script.sh &&
 265         echo "sed -ne \\\$p hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
 266         echo "sed -ne \\\$p hello | grep day > /dev/null && exit 125" >> test_script.sh &&
 267         echo "grep Yet hello > /dev/null" >> test_script.sh &&
 268         echo "test \$? -ne 0" >> test_script.sh &&
 269         chmod +x test_script.sh &&
 270         git bisect start $HASH7 $HASH1 &&
 271         git bisect run ./test_script.sh > my_bisect_log.txt &&
 272         grep "$HASH6 is first bad commit" my_bisect_log.txt
 273 '
 274
 275 test_expect_success 'bisect starting with a detached HEAD' '
 276
 277         git bisect reset &&
 278         git checkout master^ &&
 279         HEAD=$(git rev-parse --verify HEAD) &&
 280         git bisect start &&
 281         test $HEAD = $(cat .git/BISECT_START) &&
 282         git bisect reset &&
 283         test $HEAD = $(git rev-parse --verify HEAD)
 284
 285 '
 286
 287 test_expect_success 'bisect refuses to start if branch bisect exists' '
 288         git bisect reset &&
 289         git branch bisect &&
 290         test_must_fail git bisect start &&
 291         git branch -d bisect &&
 292         git checkout -b bisect &&
 293         test_must_fail git bisect start &&
 294         git checkout master &&
 295         git branch -d bisect
 296 '
 297
 298 test_expect_success 'bisect refuses to start if branch new-bisect exists' '
 299         git bisect reset &&
 300         git branch new-bisect &&
 301         test_must_fail git bisect start &&
 302         git branch -d new-bisect
 303 '
 304
 305 test_expect_success 'bisect errors out if bad and good are mistaken' '
 306         git bisect reset &&
 307         test_must_fail git bisect start $HASH2 $HASH4 2> rev_list_error &&
 308         grep "mistake good and bad" rev_list_error &&
 309         git bisect reset
 310 '
 311
 312 #
 313 #
 314 test_done