diff --git a/test/fs.t.cpp b/test/fs.t.cpp
index d5478a7bd..509474384 100644
--- a/test/fs.t.cpp
+++ b/test/fs.t.cpp
@@ -35,7 +35,7 @@ Context context;
 
 int main (int, char**)
 {
-  UnitTest t (111);
+  UnitTest t (112);
 
   // Ensure environment has no influence.
   unsetenv ("TASKDATA");
@@ -284,6 +284,10 @@ int main (int, char**)
   d10.remove ();
   t.notok (d10.exists (),           "Directory::remove temp/dir.perm file no longer exists");
 
+  // Directory::cd
+  Directory d11 ("/tmp");
+  t.ok (d11.cd (),                  "Directory::cd /tmp good");
+
   tmp.remove ();
   t.notok (tmp.exists (),           "tmp dir removed.");