1 files changed, 7 insertions, 1 deletions

diff --git a/test/lisp/emacs-lisp/rx-tests.el b/test/lisp/emacs-lisp/rx-tests.el
index 4a5919edf02..6f392d616d1 100644
--- a/test/lisp/emacs-lisp/rx-tests.el
+++ b/test/lisp/emacs-lisp/rx-tests.el
@@ -107,7 +107,13 @@
                    "ab"))
     (should (equal (and (string-match (rx (or "a" "ab" "abc")) s)
                         (match-string 0 s))
-                   "a"))))
+                   "a")))
+  ;; Test zero-argument `or'.
+  (should (equal (rx (or)) regexp-unmatchable)))
+
+(ert-deftest rx-seq ()
+  ;; Test zero-argument `seq'.
+  (should (equal (rx (seq)) "")))
 
 (provide 'rx-tests)
 ;; rx-tests.el ends here.