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-rwxr-xr-xt/t4011-diff-symlink.sh177
1 files changed, 177 insertions, 0 deletions
diff --git a/t/t4011-diff-symlink.sh b/t/t4011-diff-symlink.sh
new file mode 100755
index 0000000..d7a5f7a
--- /dev/null
+++ b/t/t4011-diff-symlink.sh
@@ -0,0 +1,177 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Johannes Schindelin
+#
+
+test_description='Test diff of symlinks.
+
+'
+
+TEST_PASSES_SANITIZE_LEAK=true
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/lib-diff.sh
+
+# Print the short OID of a symlink with the given name.
+symlink_oid () {
+ local oid=$(printf "%s" "$1" | git hash-object --stdin) &&
+ git rev-parse --short "$oid"
+}
+
+# Print the short OID of the given file.
+short_oid () {
+ local oid=$(git hash-object "$1") &&
+ git rev-parse --short "$oid"
+}
+
+test_expect_success 'diff new symlink and file' '
+ symlink=$(symlink_oid xyzzy) &&
+ cat >expected <<-EOF &&
+ diff --git a/frotz b/frotz
+ new file mode 120000
+ index 0000000..$symlink
+ --- /dev/null
+ +++ b/frotz
+ @@ -0,0 +1 @@
+ +xyzzy
+ \ No newline at end of file
+ diff --git a/nitfol b/nitfol
+ new file mode 100644
+ index 0000000..$symlink
+ --- /dev/null
+ +++ b/nitfol
+ @@ -0,0 +1 @@
+ +xyzzy
+ EOF
+
+ # the empty tree
+ git update-index &&
+ tree=$(git write-tree) &&
+
+ test_ln_s_add xyzzy frotz &&
+ echo xyzzy >nitfol &&
+ git update-index --add nitfol &&
+ GIT_DIFF_OPTS=--unified=0 git diff-index -M -p $tree >current &&
+ compare_diff_patch expected current
+'
+
+test_expect_success 'diff unchanged symlink and file' '
+ tree=$(git write-tree) &&
+ git update-index frotz nitfol &&
+ test -z "$(git diff-index --name-only $tree)"
+'
+
+test_expect_success 'diff removed symlink and file' '
+ cat >expected <<-EOF &&
+ diff --git a/frotz b/frotz
+ deleted file mode 120000
+ index $symlink..0000000
+ --- a/frotz
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -xyzzy
+ \ No newline at end of file
+ diff --git a/nitfol b/nitfol
+ deleted file mode 100644
+ index $symlink..0000000
+ --- a/nitfol
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -xyzzy
+ EOF
+ mv frotz frotz2 &&
+ mv nitfol nitfol2 &&
+ git diff-index -M -p $tree >current &&
+ compare_diff_patch expected current
+'
+
+test_expect_success 'diff identical, but newly created symlink and file' '
+ >expected &&
+ rm -f frotz nitfol &&
+ echo xyzzy >nitfol &&
+ test-tool chmtime +10 nitfol &&
+ if test_have_prereq SYMLINKS
+ then
+ ln -s xyzzy frotz
+ else
+ printf xyzzy >frotz
+ # the symlink property propagates from the index
+ fi &&
+ git diff-index -M -p $tree >current &&
+ compare_diff_patch expected current &&
+
+ >expected &&
+ git diff-index -M -p -w $tree >current &&
+ compare_diff_patch expected current
+'
+
+test_expect_success 'diff different symlink and file' '
+ new=$(symlink_oid yxyyz) &&
+ cat >expected <<-EOF &&
+ diff --git a/frotz b/frotz
+ index $symlink..$new 120000
+ --- a/frotz
+ +++ b/frotz
+ @@ -1 +1 @@
+ -xyzzy
+ \ No newline at end of file
+ +yxyyz
+ \ No newline at end of file
+ diff --git a/nitfol b/nitfol
+ index $symlink..$new 100644
+ --- a/nitfol
+ +++ b/nitfol
+ @@ -1 +1 @@
+ -xyzzy
+ +yxyyz
+ EOF
+ rm -f frotz &&
+ if test_have_prereq SYMLINKS
+ then
+ ln -s yxyyz frotz
+ else
+ printf yxyyz >frotz
+ # the symlink property propagates from the index
+ fi &&
+ echo yxyyz >nitfol &&
+ git diff-index -M -p $tree >current &&
+ compare_diff_patch expected current
+'
+
+test_expect_success SYMLINKS 'diff symlinks with non-existing targets' '
+ ln -s narf pinky &&
+ ln -s take\ over brain &&
+ test_must_fail git diff --no-index pinky brain >output 2>output.err &&
+ grep narf output &&
+ test_must_be_empty output.err
+'
+
+test_expect_success SYMLINKS 'setup symlinks with attributes' '
+ echo "*.bin diff=bin" >>.gitattributes &&
+ echo content >file.bin &&
+ ln -s file.bin link.bin &&
+ git add -N file.bin link.bin
+'
+
+test_expect_success SYMLINKS 'symlinks do not respect userdiff config by path' '
+ file=$(short_oid file.bin) &&
+ link=$(symlink_oid file.bin) &&
+ cat >expect <<-EOF &&
+ diff --git a/file.bin b/file.bin
+ new file mode 100644
+ index 0000000..$file
+ Binary files /dev/null and b/file.bin differ
+ diff --git a/link.bin b/link.bin
+ new file mode 120000
+ index 0000000..$link
+ --- /dev/null
+ +++ b/link.bin
+ @@ -0,0 +1 @@
+ +file.bin
+ \ No newline at end of file
+ EOF
+ git config diff.bin.binary true &&
+ git diff file.bin link.bin >actual &&
+ test_cmp expect actual
+'
+
+test_done