t/t6406-merge-attr.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2007 Junio C Hamano
   4 #
   5
   6 test_description='per path merge controlled by merge attribute'
   7
   8 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
   9 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
  10
  11 . ./test-lib.sh
  12
  13 test_expect_success setup '
  14
  15         for f in text binary union
  16         do
  17                 echo Initial >$f && git add $f || return 1
  18         done &&
  19         test_tick &&
  20         git commit -m Initial &&
  21
  22         git branch side &&
  23         for f in text binary union
  24         do
  25                 echo Main >>$f && git add $f || return 1
  26         done &&
  27         test_tick &&
  28         git commit -m Main &&
  29
  30         git checkout side &&
  31         for f in text binary union
  32         do
  33                 echo Side >>$f && git add $f || return 1
  34         done &&
  35         test_tick &&
  36         git commit -m Side &&
  37
  38         git tag anchor &&
  39
  40         cat >./custom-merge <<-\EOF &&
  41         #!/bin/sh
  42
  43         orig="$1" ours="$2" theirs="$3" exit="$4" path=$5
  44         (
  45                 echo "orig is $orig"
  46                 echo "ours is $ours"
  47                 echo "theirs is $theirs"
  48                 echo "path is $path"
  49                 echo "=== orig ==="
  50                 cat "$orig"
  51                 echo "=== ours ==="
  52                 cat "$ours"
  53                 echo "=== theirs ==="
  54                 cat "$theirs"
  55         ) >"$ours+"
  56         cat "$ours+" >"$ours"
  57         rm -f "$ours+"
  58         exit "$exit"
  59         EOF
  60         chmod +x ./custom-merge
  61 '
  62
  63 test_expect_success merge '
  64
  65         cat >.gitattributes <<-\EOF &&
  66         binary -merge
  67         union merge=union
  68         EOF
  69
  70         if git merge main
  71         then
  72                 echo Gaah, should have conflicted
  73                 false
  74         else
  75                 echo Ok, conflicted.
  76         fi
  77 '
  78
  79 test_expect_success 'check merge result in index' '
  80
  81         git ls-files -u | grep binary &&
  82         git ls-files -u | grep text &&
  83         ! (git ls-files -u | grep union)
  84
  85 '
  86
  87 test_expect_success 'check merge result in working tree' '
  88
  89         git cat-file -p HEAD:binary >binary-orig &&
  90         grep "<<<<<<<" text &&
  91         cmp binary-orig binary &&
  92         ! grep "<<<<<<<" union &&
  93         grep Main union &&
  94         grep Side union
  95
  96 '
  97
  98 test_expect_success 'retry the merge with longer context' '
  99         echo text conflict-marker-size=32 >>.gitattributes &&
 100         git checkout -m text &&
 101         sed -ne "/^\([<=>]\)\1\1\1*/{
 102                 s/ .*$//
 103                 p
 104         }" >actual text &&
 105         grep ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>" actual &&
 106         grep "================================" actual &&
 107         grep "<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<" actual
 108 '
 109
 110 test_expect_success 'custom merge backend' '
 111
 112         echo "* merge=union" >.gitattributes &&
 113         echo "text merge=custom" >>.gitattributes &&
 114
 115         git reset --hard anchor &&
 116         git config --replace-all \
 117         merge.custom.driver "./custom-merge %O %A %B 0 %P" &&
 118         git config --replace-all \
 119         merge.custom.name "custom merge driver for testing" &&
 120
 121         git merge main &&
 122
 123         cmp binary union &&
 124         sed -e 1,3d text >check-1 &&
 125         o=$(git unpack-file main^:text) &&
 126         a=$(git unpack-file side^:text) &&
 127         b=$(git unpack-file main:text) &&
 128         sh -c "./custom-merge $o $a $b 0 text" &&
 129         sed -e 1,3d $a >check-2 &&
 130         cmp check-1 check-2 &&
 131         rm -f $o $a $b
 132 '
 133
 134 test_expect_success 'custom merge backend' '
 135
 136         git reset --hard anchor &&
 137         git config --replace-all \
 138         merge.custom.driver "./custom-merge %O %A %B 1 %P" &&
 139         git config --replace-all \
 140         merge.custom.name "custom merge driver for testing" &&
 141
 142         if git merge main
 143         then
 144                 echo "Eh? should have conflicted"
 145                 false
 146         else
 147                 echo "Ok, conflicted"
 148         fi &&
 149
 150         cmp binary union &&
 151         sed -e 1,3d text >check-1 &&
 152         o=$(git unpack-file main^:text) &&
 153         a=$(git unpack-file anchor:text) &&
 154         b=$(git unpack-file main:text) &&
 155         sh -c "./custom-merge $o $a $b 0 text" &&
 156         sed -e 1,3d $a >check-2 &&
 157         cmp check-1 check-2 &&
 158         sed -e 1,3d -e 4q $a >check-3 &&
 159         echo "path is text" >expect &&
 160         cmp expect check-3 &&
 161         rm -f $o $a $b
 162 '
 163
 164 test_expect_success 'up-to-date merge without common ancestor' '
 165         git init repo1 &&
 166         git init repo2 &&
 167         test_tick &&
 168         (
 169                 cd repo1 &&
 170                 >a &&
 171                 git add a &&
 172                 git commit -m initial
 173         ) &&
 174         test_tick &&
 175         (
 176                 cd repo2 &&
 177                 git commit --allow-empty -m initial
 178         ) &&
 179         test_tick &&
 180         (
 181                 cd repo1 &&
 182                 git fetch ../repo2 main &&
 183                 git merge --allow-unrelated-histories FETCH_HEAD
 184         )
 185 '
 186
 187 test_expect_success 'custom merge does not lock index' '
 188         git reset --hard anchor &&
 189         write_script sleep-an-hour.sh <<-\EOF &&
 190                 sleep 3600 &
 191                 echo $! >sleep.pid
 192         EOF
 193
 194         test_write_lines >.gitattributes \
 195                 "* merge=ours" "text merge=sleep-an-hour" &&
 196         test_config merge.ours.driver true &&
 197         test_config merge.sleep-an-hour.driver ./sleep-an-hour.sh &&
 198
 199         # We are testing that the custom merge driver does not block
 200         # index.lock on Windows due to an inherited file handle.
 201         # To ensure that the backgrounded process ran sufficiently
 202         # long (and has been started in the first place), we do not
 203         # ignore the result of the kill command.
 204         # By packaging the command in test_when_finished, we get both
 205         # the correctness check and the clean-up.
 206         test_when_finished "kill \$(cat sleep.pid)" &&
 207         git merge main
 208 '
 209
 210 test_expect_success 'binary files with union attribute' '
 211         git checkout -b bin-main &&
 212         printf "base\0" >bin.txt &&
 213         echo "bin.txt merge=union" >.gitattributes &&
 214         git add bin.txt .gitattributes &&
 215         git commit -m base &&
 216
 217         printf "one\0" >bin.txt &&
 218         git commit -am one &&
 219
 220         git checkout -b bin-side HEAD^ &&
 221         printf "two\0" >bin.txt &&
 222         git commit -am two &&
 223
 224         if test "$GIT_TEST_MERGE_ALGORITHM" = ort
 225         then
 226                 test_must_fail git merge bin-main >output
 227         else
 228                 test_must_fail git merge bin-main 2>output
 229         fi &&
 230         grep -i "warning.*cannot merge.*HEAD vs. bin-main" output
 231 '
 232
 233 test_done