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diff --git a/test/lisp/emacs-lisp/cond-star-tests.el b/test/lisp/emacs-lisp/cond-star-tests.el
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+++ b/test/lisp/emacs-lisp/cond-star-tests.el
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+;;; cond-star-tests.el --- tests for emacs-lisp/cond-star.el  -*- lexical-binding:t -*-
+
+;; Copyright (C) 2024 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(require 'cond-star)
+(require 'ert)
+
+(ert-deftest cond-star-test-1 ()
+  (should (equal (cond*
+                   ((pcase* `(,x . ,y) (cons 5 4)) (list x y))
+                   (t 6))
+                 '(5 4)))
+  (should (equal (cond*
+                   ((pcase* `(,x . ,y) nil) (list x y))
+                   (t 6))
+                 6))
+  ;; FIXME: Not supported.
+  ;; (let* ((z nil)
+  ;;        (res (cond*
+  ;;              ((pcase* `(,x . ,y) (cons 5 4)) (setq z 6) :non-exit)
+  ;;              (t `(,x ,y ,z)))))
+  ;;   (should (equal res '(5 4 6))))
+  (should (equal (cond*
+                   ((pcase* `(,x . ,y) (cons 5 4)))
+                   (t (list x y)))
+                 '(5 4)))
+  (should (equal (cond*
+                   ((pcase* `(,x . ,y) nil))
+                   (t (list x y)))
+                 '(nil nil)))
+  )
+
+
+;;; cond-star-tests.el ends here