test_fileutils: Add optional test for a vfat filesystem destination (C++, Java) w/ copy_options::ignore_symlink_errors

On a vfat target we have to:
- ignore symbolic links (if not followed), just drop them as they are not supported
- be generous on mtime granularity (drop nsec ..)
- don't compare permissions, fmode_t
- don't compare gid and assume files are using uid (true in this test)

1 files changed, 3 insertions, 1 deletions

diff --git a/test/test_fileutils.hpp b/test/test_fileutils.hpp
index 6603fdf..eba2e2e 100644
--- a/test/test_fileutils.hpp
+++ b/test/test_fileutils.hpp
@@ -140,6 +140,8 @@ class TestFileUtilBase {
     const std::string project_root1 = "../../test_data";
     // submodule location with jaulib directly hosted below main project
     const std::string project_root2 = "../../../jaulib/test_data";
-    // external filesystem to test ...
+    // external filesystem source to test ...
     const std::string project_root_ext = "/mnt/ssd0/data/test_data";
+    // external vfat filesystem destination to test ...
+    const std::string dest_fs_vfat = "/mnt/vfat";
 };