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