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 reset: back in the master branch' '
  75         git bisect reset &&
  76         echo "* master" > branch.expect &&
  77         git branch > branch.output &&
  78         cmp branch.expect branch.output
  79 '
  80
  81 test_expect_success 'bisect reset: back in another branch' '
  82         git checkout -b other &&
  83         git bisect start &&
  84         git bisect good $HASH1 &&
  85         git bisect bad $HASH3 &&
  86         git bisect reset &&
  87         echo "  master" > branch.expect &&
  88         echo "* other" >> branch.expect &&
  89         git branch > branch.output &&
  90         cmp branch.expect branch.output
  91 '
  92
  93 test_expect_success 'bisect reset when not bisecting' '
  94         git bisect reset &&
  95         git branch > branch.output &&
  96         cmp branch.expect branch.output
  97 '
  98
  99 test_expect_success 'bisect reset removes packed refs' '
 100         git bisect reset &&
 101         git bisect start &&
 102         git bisect good $HASH1 &&
 103         git bisect bad $HASH3 &&
 104         git pack-refs --all --prune &&
 105         git bisect next &&
 106         git bisect reset &&
 107         test -z "$(git for-each-ref "refs/bisect/*")" &&
 108         test -z "$(git for-each-ref "refs/heads/bisect")"
 109 '
 110
 111 # $HASH1 is good, $HASH4 is bad, we skip $HASH3
 112 # but $HASH2 is bad,
 113 # so we should find $HASH2 as the first bad commit
 114 test_expect_success 'bisect skip: successfull result' '
 115         git bisect reset &&
 116         git bisect start $HASH4 $HASH1 &&
 117         git bisect skip &&
 118         git bisect bad > my_bisect_log.txt &&
 119         grep "$HASH2 is first bad commit" my_bisect_log.txt &&
 120         git bisect reset
 121 '
 122
 123 # $HASH1 is good, $HASH4 is bad, we skip $HASH3 and $HASH2
 124 # so we should not be able to tell the first bad commit
 125 # among $HASH2, $HASH3 and $HASH4
 126 test_expect_success 'bisect skip: cannot tell between 3 commits' '
 127         git bisect start $HASH4 $HASH1 &&
 128         git bisect skip || return 1
 129
 130         if git bisect skip > my_bisect_log.txt
 131         then
 132                 echo Oops, should have failed.
 133                 false
 134         else
 135                 test $? -eq 2 &&
 136                 grep "first bad commit could be any of" my_bisect_log.txt &&
 137                 ! grep $HASH1 my_bisect_log.txt &&
 138                 grep $HASH2 my_bisect_log.txt &&
 139                 grep $HASH3 my_bisect_log.txt &&
 140                 grep $HASH4 my_bisect_log.txt &&
 141                 git bisect reset
 142         fi
 143 '
 144
 145 # $HASH1 is good, $HASH4 is bad, we skip $HASH3
 146 # but $HASH2 is good,
 147 # so we should not be able to tell the first bad commit
 148 # among $HASH3 and $HASH4
 149 test_expect_success 'bisect skip: cannot tell between 2 commits' '
 150         git bisect start $HASH4 $HASH1 &&
 151         git bisect skip || return 1
 152
 153         if git bisect good > my_bisect_log.txt
 154         then
 155                 echo Oops, should have failed.
 156                 false
 157         else
 158                 test $? -eq 2 &&
 159                 grep "first bad commit could be any of" my_bisect_log.txt &&
 160                 ! grep $HASH1 my_bisect_log.txt &&
 161                 ! grep $HASH2 my_bisect_log.txt &&
 162                 grep $HASH3 my_bisect_log.txt &&
 163                 grep $HASH4 my_bisect_log.txt &&
 164                 git bisect reset
 165         fi
 166 '
 167
 168 # We want to automatically find the commit that
 169 # introduced "Another" into hello.
 170 test_expect_success \
 171     '"git bisect run" simple case' \
 172     'echo "#"\!"/bin/sh" > test_script.sh &&
 173      echo "grep Another hello > /dev/null" >> test_script.sh &&
 174      echo "test \$? -ne 0" >> test_script.sh &&
 175      chmod +x test_script.sh &&
 176      git bisect start &&
 177      git bisect good $HASH1 &&
 178      git bisect bad $HASH4 &&
 179      git bisect run ./test_script.sh > my_bisect_log.txt &&
 180      grep "$HASH3 is first bad commit" my_bisect_log.txt &&
 181      git bisect reset'
 182
 183 # We want to automatically find the commit that
 184 # introduced "Ciao" into hello.
 185 test_expect_success \
 186     '"git bisect run" with more complex "git bisect start"' \
 187     'echo "#"\!"/bin/sh" > test_script.sh &&
 188      echo "grep Ciao hello > /dev/null" >> test_script.sh &&
 189      echo "test \$? -ne 0" >> test_script.sh &&
 190      chmod +x test_script.sh &&
 191      git bisect start $HASH4 $HASH1 &&
 192      git bisect run ./test_script.sh > my_bisect_log.txt &&
 193      grep "$HASH4 is first bad commit" my_bisect_log.txt &&
 194      git bisect reset'
 195
 196 # $HASH1 is good, $HASH5 is bad, we skip $HASH3
 197 # but $HASH4 is good,
 198 # so we should find $HASH5 as the first bad commit
 199 HASH5=
 200 test_expect_success 'bisect skip: add line and then a new test' '
 201         add_line_into_file "5: Another new line." hello &&
 202         HASH5=$(git rev-parse --verify HEAD) &&
 203         git bisect start $HASH5 $HASH1 &&
 204         git bisect skip &&
 205         git bisect good > my_bisect_log.txt &&
 206         grep "$HASH5 is first bad commit" my_bisect_log.txt &&
 207         git bisect log > log_to_replay.txt &&
 208         git bisect reset
 209 '
 210
 211 test_expect_success 'bisect skip and bisect replay' '
 212         git bisect replay log_to_replay.txt > my_bisect_log.txt &&
 213         grep "$HASH5 is first bad commit" my_bisect_log.txt &&
 214         git bisect reset
 215 '
 216
 217 HASH6=
 218 test_expect_success 'bisect run & skip: cannot tell between 2' '
 219         add_line_into_file "6: Yet a line." hello &&
 220         HASH6=$(git rev-parse --verify HEAD) &&
 221         echo "#"\!"/bin/sh" > test_script.sh &&
 222         echo "tail -1 hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
 223         echo "grep line hello > /dev/null" >> test_script.sh &&
 224         echo "test \$? -ne 0" >> test_script.sh &&
 225         chmod +x test_script.sh &&
 226         git bisect start $HASH6 $HASH1 &&
 227         if git bisect run ./test_script.sh > my_bisect_log.txt
 228         then
 229                 echo Oops, should have failed.
 230                 false
 231         else
 232                 test $? -eq 2 &&
 233                 grep "first bad commit could be any of" my_bisect_log.txt &&
 234                 ! grep $HASH3 my_bisect_log.txt &&
 235                 ! grep $HASH6 my_bisect_log.txt &&
 236                 grep $HASH4 my_bisect_log.txt &&
 237                 grep $HASH5 my_bisect_log.txt
 238         fi
 239 '
 240
 241 HASH7=
 242 test_expect_success 'bisect run & skip: find first bad' '
 243         git bisect reset &&
 244         add_line_into_file "7: Should be the last line." hello &&
 245         HASH7=$(git rev-parse --verify HEAD) &&
 246         echo "#"\!"/bin/sh" > test_script.sh &&
 247         echo "tail -1 hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
 248         echo "tail -1 hello | grep day > /dev/null && exit 125" >> test_script.sh &&
 249         echo "grep Yet hello > /dev/null" >> test_script.sh &&
 250         echo "test \$? -ne 0" >> test_script.sh &&
 251         chmod +x test_script.sh &&
 252         git bisect start $HASH7 $HASH1 &&
 253         git bisect run ./test_script.sh > my_bisect_log.txt &&
 254         grep "$HASH6 is first bad commit" my_bisect_log.txt
 255 '
 256
 257 test_expect_success 'bisect starting with a detached HEAD' '
 258
 259         git bisect reset &&
 260         git checkout master^ &&
 261         HEAD=$(git rev-parse --verify HEAD) &&
 262         git bisect start &&
 263         test $HEAD = $(cat .git/BISECT_START) &&
 264         git bisect reset &&
 265         test $HEAD = $(git rev-parse --verify HEAD)
 266
 267 '
 268
 269 #
 270 #
 271 test_done