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 Whether 'tis nobler in the mind to suffer
  13 The slings and arrows of outrageous fortune,
  14 Or to take arms against a sea of troubles,
  15 And by opposing end them? To die: to sleep;
  16 No more; and by a sleep to say we end
  17 The heart-ache and the thousand natural shocks
  18 That flesh is heir to, 'tis a consummation
  19 Devoutly to be wish'd.
  20 EOF
  21
  22 git add a1
  23 git commit -q -a -m initial
  24
  25 git checkout -b first
  26 cat >> a1 << EOF
  27 To die, to sleep;
  28 To sleep: perchance to dream: ay, there's the rub;
  29 For in that sleep of death what dreams may come
  30 When we have shuffled off this mortal coil,
  31 Must give us pause: there's the respect
  32 That makes calamity of so long life;
  33 EOF
  34 git commit -q -a -m first
  35
  36 git checkout -b second master
  37 git show first:a1 |
  38 sed -e 's/To die, t/To die! T/' > a1
  39 echo "* END *" >>a1
  40 git commit -q -a -m second
  41
  42 test_expect_success 'nothing recorded without rerere' '
  43         (rm -rf .git/rr-cache; git config rerere.enabled false) &&
  44         ! git merge first &&
  45         ! test -d .git/rr-cache
  46 '
  47
  48 # activate rerere, old style
  49 test_expect_success 'conflicting merge' '
  50         git reset --hard &&
  51         mkdir .git/rr-cache &&
  52         git config --unset rerere.enabled &&
  53         ! git merge first
  54 '
  55
  56 sha1=$(cut -d'  ' -f1 .git/rr-cache/MERGE_RR)
  57 rr=.git/rr-cache/$sha1
  58 test_expect_success 'recorded preimage' "grep ======= $rr/preimage"
  59
  60 test_expect_success 'rerere.enabled works, too' '
  61         rm -rf .git/rr-cache &&
  62         git config rerere.enabled true &&
  63         git reset --hard &&
  64         ! git merge first &&
  65         grep ======= $rr/preimage
  66 '
  67
  68 test_expect_success 'no postimage or thisimage yet' \
  69         "test ! -f $rr/postimage -a ! -f $rr/thisimage"
  70
  71 test_expect_success 'preimage has right number of lines' '
  72
  73         cnt=$(sed -ne "/^<<<<<<</,/^>>>>>>>/p" $rr/preimage | wc -l) &&
  74         test $cnt = 9
  75
  76 '
  77
  78 git show first:a1 > a1
  79
  80 cat > expect << EOF
  81 --- a/a1
  82 +++ b/a1
  83 @@ -6,17 +6,9 @@
  84  The heart-ache and the thousand natural shocks
  85  That flesh is heir to, 'tis a consummation
  86  Devoutly to be wish'd.
  87 -<<<<<<<
  88 -To die! To sleep;
  89 -=======
  90  To die, to sleep;
  91 ->>>>>>>
  92  To sleep: perchance to dream: ay, there's the rub;
  93  For in that sleep of death what dreams may come
  94  When we have shuffled off this mortal coil,
  95  Must give us pause: there's the respect
  96  That makes calamity of so long life;
  97 -<<<<<<<
  98 -=======
  99 -* END *
 100 ->>>>>>>
 101 EOF
 102 git rerere diff > out
 103
 104 test_expect_success 'rerere diff' 'git diff expect out'
 105
 106 cat > expect << EOF
 107 a1
 108 EOF
 109
 110 git rerere status > out
 111
 112 test_expect_success 'rerere status' 'git diff expect out'
 113
 114 test_expect_success 'commit succeeds' \
 115         "git commit -q -a -m 'prefer first over second'"
 116
 117 test_expect_success 'recorded postimage' "test -f $rr/postimage"
 118
 119 test_expect_success 'another conflicting merge' '
 120         git checkout -b third master &&
 121         git show second^:a1 | sed "s/To die: t/To die! T/" > a1 &&
 122         git commit -q -a -m third &&
 123         ! git pull . first
 124 '
 125
 126 git show first:a1 | sed 's/To die: t/To die! T/' > expect
 127 test_expect_success 'rerere kicked in' "! grep ======= a1"
 128
 129 test_expect_success 'rerere prefers first change' 'git diff a1 expect'
 130
 131 rm $rr/postimage
 132 echo "$sha1     a1" | perl -pe 'y/\012/\000/' > .git/rr-cache/MERGE_RR
 133
 134 test_expect_success 'rerere clear' 'git rerere clear'
 135
 136 test_expect_success 'clear removed the directory' "test ! -d $rr"
 137
 138 mkdir $rr
 139 echo Hello > $rr/preimage
 140 echo World > $rr/postimage
 141
 142 sha2=4000000000000000000000000000000000000000
 143 rr2=.git/rr-cache/$sha2
 144 mkdir $rr2
 145 echo Hello > $rr2/preimage
 146
 147 almost_15_days_ago=$((60-15*86400))
 148 just_over_15_days_ago=$((-1-15*86400))
 149 almost_60_days_ago=$((60-60*86400))
 150 just_over_60_days_ago=$((-1-60*86400))
 151
 152 test-chmtime =$almost_60_days_ago $rr/preimage
 153 test-chmtime =$almost_15_days_ago $rr2/preimage
 154
 155 test_expect_success 'garbage collection (part1)' 'git rerere gc'
 156
 157 test_expect_success 'young records still live' \
 158         "test -f $rr/preimage && test -f $rr2/preimage"
 159
 160 test-chmtime =$just_over_60_days_ago $rr/preimage
 161 test-chmtime =$just_over_15_days_ago $rr2/preimage
 162
 163 test_expect_success 'garbage collection (part2)' 'git rerere gc'
 164
 165 test_expect_success 'old records rest in peace' \
 166         "test ! -f $rr/preimage && test ! -f $rr2/preimage"
 167
 168 test_expect_success 'file2 added differently in two branches' '
 169         git reset --hard &&
 170         git checkout -b fourth &&
 171         echo Hallo > file2 &&
 172         git add file2 &&
 173         git commit -m version1 &&
 174         git checkout third &&
 175         echo Bello > file2 &&
 176         git add file2 &&
 177         git commit -m version2 &&
 178         ! git merge fourth &&
 179         sha1=$(sed -e "s/       .*//" .git/rr-cache/MERGE_RR) &&
 180         rr=.git/rr-cache/$sha1 &&
 181         echo Cello > file2 &&
 182         git add file2 &&
 183         git commit -m resolution
 184 '
 185
 186 test_expect_success 'resolution was recorded properly' '
 187         git reset --hard HEAD~2 &&
 188         git checkout -b fifth &&
 189         echo Hallo > file3 &&
 190         git add file3 &&
 191         git commit -m version1 &&
 192         git checkout third &&
 193         echo Bello > file3 &&
 194         git add file3 &&
 195         git commit -m version2 &&
 196         ! git merge fifth &&
 197         git diff-files -q &&
 198         test Cello = "$(cat file3)"
 199 '
 200
 201 test_done