t/t4011-diff-symlink.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Johannes Schindelin
   4 #
   5
   6 test_description='Test diff of symlinks.
   7
   8 '
   9
  10 TEST_PASSES_SANITIZE_LEAK=true
  11 . ./test-lib.sh
  12 . "$TEST_DIRECTORY"/lib-diff.sh
  13
  14 # Print the short OID of a symlink with the given name.
  15 symlink_oid () {
  16         local oid=$(printf "%s" "$1" | git hash-object --stdin) &&
  17         git rev-parse --short "$oid"
  18 }
  19
  20 # Print the short OID of the given file.
  21 short_oid () {
  22         local oid=$(git hash-object "$1") &&
  23         git rev-parse --short "$oid"
  24 }
  25
  26 test_expect_success 'diff new symlink and file' '
  27         symlink=$(symlink_oid xyzzy) &&
  28         cat >expected <<-EOF &&
  29         diff --git a/frotz b/frotz
  30         new file mode 120000
  31         index 0000000..$symlink
  32         --- /dev/null
  33         +++ b/frotz
  34         @@ -0,0 +1 @@
  35         +xyzzy
  36         \ No newline at end of file
  37         diff --git a/nitfol b/nitfol
  38         new file mode 100644
  39         index 0000000..$symlink
  40         --- /dev/null
  41         +++ b/nitfol
  42         @@ -0,0 +1 @@
  43         +xyzzy
  44         EOF
  45
  46         # the empty tree
  47         git update-index &&
  48         tree=$(git write-tree) &&
  49
  50         test_ln_s_add xyzzy frotz &&
  51         echo xyzzy >nitfol &&
  52         git update-index --add nitfol &&
  53         GIT_DIFF_OPTS=--unified=0 git diff-index -M -p $tree >current &&
  54         compare_diff_patch expected current
  55 '
  56
  57 test_expect_success 'diff unchanged symlink and file'  '
  58         tree=$(git write-tree) &&
  59         git update-index frotz nitfol &&
  60         test -z "$(git diff-index --name-only $tree)"
  61 '
  62
  63 test_expect_success 'diff removed symlink and file' '
  64         cat >expected <<-EOF &&
  65         diff --git a/frotz b/frotz
  66         deleted file mode 120000
  67         index $symlink..0000000
  68         --- a/frotz
  69         +++ /dev/null
  70         @@ -1 +0,0 @@
  71         -xyzzy
  72         \ No newline at end of file
  73         diff --git a/nitfol b/nitfol
  74         deleted file mode 100644
  75         index $symlink..0000000
  76         --- a/nitfol
  77         +++ /dev/null
  78         @@ -1 +0,0 @@
  79         -xyzzy
  80         EOF
  81         mv frotz frotz2 &&
  82         mv nitfol nitfol2 &&
  83         git diff-index -M -p $tree >current &&
  84         compare_diff_patch expected current
  85 '
  86
  87 test_expect_success 'diff identical, but newly created symlink and file' '
  88         >expected &&
  89         rm -f frotz nitfol &&
  90         echo xyzzy >nitfol &&
  91         test-tool chmtime +10 nitfol &&
  92         if test_have_prereq SYMLINKS
  93         then
  94                 ln -s xyzzy frotz
  95         else
  96                 printf xyzzy >frotz
  97                 # the symlink property propagates from the index
  98         fi &&
  99         git diff-index -M -p $tree >current &&
 100         compare_diff_patch expected current &&
 101
 102         >expected &&
 103         git diff-index -M -p -w $tree >current &&
 104         compare_diff_patch expected current
 105 '
 106
 107 test_expect_success 'diff different symlink and file' '
 108         new=$(symlink_oid yxyyz) &&
 109         cat >expected <<-EOF &&
 110         diff --git a/frotz b/frotz
 111         index $symlink..$new 120000
 112         --- a/frotz
 113         +++ b/frotz
 114         @@ -1 +1 @@
 115         -xyzzy
 116         \ No newline at end of file
 117         +yxyyz
 118         \ No newline at end of file
 119         diff --git a/nitfol b/nitfol
 120         index $symlink..$new 100644
 121         --- a/nitfol
 122         +++ b/nitfol
 123         @@ -1 +1 @@
 124         -xyzzy
 125         +yxyyz
 126         EOF
 127         rm -f frotz &&
 128         if test_have_prereq SYMLINKS
 129         then
 130                 ln -s yxyyz frotz
 131         else
 132                 printf yxyyz >frotz
 133                 # the symlink property propagates from the index
 134         fi &&
 135         echo yxyyz >nitfol &&
 136         git diff-index -M -p $tree >current &&
 137         compare_diff_patch expected current
 138 '
 139
 140 test_expect_success SYMLINKS 'diff symlinks with non-existing targets' '
 141         ln -s narf pinky &&
 142         ln -s take\ over brain &&
 143         test_must_fail git diff --no-index pinky brain >output 2>output.err &&
 144         grep narf output &&
 145         test_must_be_empty output.err
 146 '
 147
 148 test_expect_success SYMLINKS 'setup symlinks with attributes' '
 149         echo "*.bin diff=bin" >>.gitattributes &&
 150         echo content >file.bin &&
 151         ln -s file.bin link.bin &&
 152         git add -N file.bin link.bin
 153 '
 154
 155 test_expect_success SYMLINKS 'symlinks do not respect userdiff config by path' '
 156         file=$(short_oid file.bin) &&
 157         link=$(symlink_oid file.bin) &&
 158         cat >expect <<-EOF &&
 159         diff --git a/file.bin b/file.bin
 160         new file mode 100644
 161         index 0000000..$file
 162         Binary files /dev/null and b/file.bin differ
 163         diff --git a/link.bin b/link.bin
 164         new file mode 120000
 165         index 0000000..$link
 166         --- /dev/null
 167         +++ b/link.bin
 168         @@ -0,0 +1 @@
 169         +file.bin
 170         \ No newline at end of file
 171         EOF
 172         git config diff.bin.binary true &&
 173         git diff file.bin link.bin >actual &&
 174         test_cmp expect actual
 175 '
 176
 177 test_done