[PATCH v4 1/4] t0060: Add test for manipulating symlinks via absolute paths

[Martin Erik Werner <martinerikwerner@gmail.com>]

When symlinks in the working tree are manipulated using the absolute
path, git dereferences them, and tries to manipulate the link target
instead.

This is a regression introduced by 18e051a:
  setup: translate symlinks in filename when using absolute paths
(which did not take symlinks in the work tree into consideration).

Add a known-breakage tests using the prefix_path function, which
currently uses real_path, causing the dereference.

Signed-off-by: Martin Erik Werner <martinerikwerner@gmail.com>
---
 t/t0060-path-utils.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/t/t0060-path-utils.sh b/t/t0060-path-utils.sh
index 07c10c8..0bba988 100755
--- a/t/t0060-path-utils.sh
+++ b/t/t0060-path-utils.sh
@@ -190,6 +190,11 @@ test_expect_success SYMLINKS 'real path works on symlinks' '
 	test "$sym" = "$(test-path-utils real_path "$dir2/syml")"
 '
 
+test_expect_failure SYMLINKS 'prefix_path works with absolute paths to work tree symlinks' '
+	ln -s target symlink &&
+	test "$(test-path-utils prefix_path prefix "$(pwd)/symlink")" = "symlink"
+'
+
 relative_path /foo/a/b/c/	/foo/a/b/	c/
 relative_path /foo/a/b/c/	/foo/a/b	c/
 relative_path /foo/a//b//c/	///foo/a/b//	c/		POSIX
-- 
1.8.5.2