t/t4200-rerere.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2006 Johannes E. Schindelin
   4 #
   5
   6 test_description='git rerere
   7 '
   8
   9 . ./test-lib.sh
  10
  11 cat > a1 << EOF
  12 Some title
  13 ==========
  14 Whether 'tis nobler in the mind to suffer
  15 The slings and arrows of outrageous fortune,
  16 Or to take arms against a sea of troubles,
  17 And by opposing end them? To die: to sleep;
  18 No more; and by a sleep to say we end
  19 The heart-ache and the thousand natural shocks
  20 That flesh is heir to, 'tis a consummation
  21 Devoutly to be wish'd.
  22 EOF
  23
  24 git add a1
  25 git commit -q -a -m initial
  26
  27 git checkout -b first
  28 cat >> a1 << EOF
  29 Some title
  30 ==========
  31 To die, to sleep;
  32 To sleep: perchance to dream: ay, there's the rub;
  33 For in that sleep of death what dreams may come
  34 When we have shuffled off this mortal coil,
  35 Must give us pause: there's the respect
  36 That makes calamity of so long life;
  37 EOF
  38 git commit -q -a -m first
  39
  40 git checkout -b second master
  41 git show first:a1 |
  42 sed -e 's/To die, t/To die! T/' -e 's/Some title/Some Title/' > a1
  43 echo "* END *" >>a1
  44 git commit -q -a -m second
  45
  46 test_expect_success 'nothing recorded without rerere' '
  47         (rm -rf .git/rr-cache; git config rerere.enabled false) &&
  48         test_must_fail git merge first &&
  49         ! test -d .git/rr-cache
  50 '
  51
  52 # activate rerere, old style
  53 test_expect_success 'conflicting merge' '
  54         git reset --hard &&
  55         mkdir .git/rr-cache &&
  56         git config --unset rerere.enabled &&
  57         test_must_fail git merge first
  58 '
  59
  60 sha1=$(perl -pe 's/     .*//' .git/MERGE_RR)
  61 rr=.git/rr-cache/$sha1
  62 test_expect_success 'recorded preimage' "grep ^=======$ $rr/preimage"
  63
  64 test_expect_success 'rerere.enabled works, too' '
  65         rm -rf .git/rr-cache &&
  66         git config rerere.enabled true &&
  67         git reset --hard &&
  68         test_must_fail git merge first &&
  69         grep ^=======$ $rr/preimage
  70 '
  71
  72 test_expect_success 'no postimage or thisimage yet' \
  73         "test ! -f $rr/postimage -a ! -f $rr/thisimage"
  74
  75 test_expect_success 'preimage has right number of lines' '
  76
  77         cnt=$(sed -ne "/^<<<<<<</,/^>>>>>>>/p" $rr/preimage | wc -l) &&
  78         test $cnt = 13
  79
  80 '
  81
  82 git show first:a1 > a1
  83
  84 cat > expect << EOF
  85 --- a/a1
  86 +++ b/a1
  87 @@ -1,4 +1,4 @@
  88 -Some Title
  89 +Some title
  90  ==========
  91  Whether 'tis nobler in the mind to suffer
  92  The slings and arrows of outrageous fortune,
  93 @@ -8,21 +8,11 @@
  94  The heart-ache and the thousand natural shocks
  95  That flesh is heir to, 'tis a consummation
  96  Devoutly to be wish'd.
  97 -<<<<<<<
  98 -Some Title
  99 -==========
 100 -To die! To sleep;
 101 -=======
 102  Some title
 103  ==========
 104  To die, to sleep;
 105 ->>>>>>>
 106  To sleep: perchance to dream: ay, there's the rub;
 107  For in that sleep of death what dreams may come
 108  When we have shuffled off this mortal coil,
 109  Must give us pause: there's the respect
 110  That makes calamity of so long life;
 111 -<<<<<<<
 112 -=======
 113 -* END *
 114 ->>>>>>>
 115 EOF
 116 git rerere diff > out
 117
 118 test_expect_success 'rerere diff' 'test_cmp expect out'
 119
 120 cat > expect << EOF
 121 a1
 122 EOF
 123
 124 git rerere status > out
 125
 126 test_expect_success 'rerere status' 'test_cmp expect out'
 127
 128 test_expect_success 'commit succeeds' \
 129         "git commit -q -a -m 'prefer first over second'"
 130
 131 test_expect_success 'recorded postimage' "test -f $rr/postimage"
 132
 133 test_expect_success 'another conflicting merge' '
 134         git checkout -b third master &&
 135         git show second^:a1 | sed "s/To die: t/To die! T/" > a1 &&
 136         git commit -q -a -m third &&
 137         test_must_fail git pull . first
 138 '
 139
 140 git show first:a1 | sed 's/To die: t/To die! T/' > expect
 141 test_expect_success 'rerere kicked in' "! grep ^=======$ a1"
 142
 143 test_expect_success 'rerere prefers first change' 'test_cmp a1 expect'
 144
 145 rm $rr/postimage
 146 echo "$sha1     a1" | perl -pe 'y/\012/\000/' > .git/MERGE_RR
 147
 148 test_expect_success 'rerere clear' 'git rerere clear'
 149
 150 test_expect_success 'clear removed the directory' "test ! -d $rr"
 151
 152 mkdir $rr
 153 echo Hello > $rr/preimage
 154 echo World > $rr/postimage
 155
 156 sha2=4000000000000000000000000000000000000000
 157 rr2=.git/rr-cache/$sha2
 158 mkdir $rr2
 159 echo Hello > $rr2/preimage
 160
 161 almost_15_days_ago=$((60-15*86400))
 162 just_over_15_days_ago=$((-1-15*86400))
 163 almost_60_days_ago=$((60-60*86400))
 164 just_over_60_days_ago=$((-1-60*86400))
 165
 166 test-chmtime =$almost_60_days_ago $rr/preimage
 167 test-chmtime =$almost_15_days_ago $rr2/preimage
 168
 169 test_expect_success 'garbage collection (part1)' 'git rerere gc'
 170
 171 test_expect_success 'young records still live' \
 172         "test -f $rr/preimage && test -f $rr2/preimage"
 173
 174 test-chmtime =$just_over_60_days_ago $rr/preimage
 175 test-chmtime =$just_over_15_days_ago $rr2/preimage
 176
 177 test_expect_success 'garbage collection (part2)' 'git rerere gc'
 178
 179 test_expect_success 'old records rest in peace' \
 180         "test ! -f $rr/preimage && test ! -f $rr2/preimage"
 181
 182 test_expect_success 'file2 added differently in two branches' '
 183         git reset --hard &&
 184         git checkout -b fourth &&
 185         echo Hallo > file2 &&
 186         git add file2 &&
 187         git commit -m version1 &&
 188         git checkout third &&
 189         echo Bello > file2 &&
 190         git add file2 &&
 191         git commit -m version2 &&
 192         test_must_fail git merge fourth &&
 193         echo Cello > file2 &&
 194         git add file2 &&
 195         git commit -m resolution
 196 '
 197
 198 test_expect_success 'resolution was recorded properly' '
 199         git reset --hard HEAD~2 &&
 200         git checkout -b fifth &&
 201         echo Hallo > file3 &&
 202         git add file3 &&
 203         git commit -m version1 &&
 204         git checkout third &&
 205         echo Bello > file3 &&
 206         git add file3 &&
 207         git commit -m version2 &&
 208         git tag version2 &&
 209         test_must_fail git merge fifth &&
 210         test Cello = "$(cat file3)" &&
 211         test 0 != $(git ls-files -u | wc -l)
 212 '
 213
 214 test_expect_success 'rerere.autoupdate' '
 215         git config rerere.autoupdate true
 216         git reset --hard &&
 217         git checkout version2 &&
 218         test_must_fail git merge fifth &&
 219         test 0 = $(git ls-files -u | wc -l)
 220
 221 '
 222
 223 test_done