1 files changed, 74 insertions, 0 deletions
diff --git a/test/lisp/emacs-lisp/pcase-tests.el b/test/lisp/emacs-lisp/pcase-tests.el
new file mode 100644
index 00000000000..a428e4092f1
--- /dev/null
+++ b/test/lisp/emacs-lisp/pcase-tests.el
@@ -0,0 +1,74 @@
+;;; pcase-tests.el --- Test suite for pcase macro.
+
+;; Copyright (C) 2012-2016 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 <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(require 'ert)
+(require 'cl-lib)
+
+(ert-deftest pcase-tests-base ()
+  "Test pcase code."
+  (should (equal (pcase '(1 . 2) ((app car '2) 6) ((app car '1) 5)) 5)))
+
+(ert-deftest pcase-tests-bugs ()
+  (should (equal (pcase '(2 . 3)        ;bug#18554
+                   (`(,hd . ,(and (pred atom) tl)) (list hd tl))
+                   ((pred consp) nil))
+                 '(2 3))))
+
+(pcase-defmacro pcase-tests-plus (pat n)
+  `(app (lambda (v) (- v ,n)) ,pat))
+
+(ert-deftest pcase-tests-macro ()
+  (should (equal (pcase 5 ((pcase-tests-plus x 3) x)) 2)))
+
+(defun pcase-tests-grep (fname exp)
+  (when (consp exp)
+    (or (eq fname (car exp))
+        (cl-some (lambda (exp) (pcase-tests-grep fname exp)) (cdr exp)))))
+
+(ert-deftest pcase-tests-tests ()
+  (should (pcase-tests-grep 'memq '(or (+ 2 3) (memq x y))))
+  (should-not (pcase-tests-grep 'memq '(or (+ 2 3) (- x y)))))
+
+(ert-deftest pcase-tests-member ()
+  (should (pcase-tests-grep
+           'memq (macroexpand-all '(pcase x ((or 1 2 3) body)))))
+  (should (pcase-tests-grep
+           'member (macroexpand-all '(pcase x ((or '"a" '2 '3) body)))))
+  (should-not (pcase-tests-grep
+               'memq (macroexpand-all '(pcase x ((or "a" 2 3) body)))))
+  (let ((exp (macroexpand-all
+                      '(pcase x
+                         ("a" body1)
+                         (2 body2)
+                         ((or "a" 2 3) body)))))
+    (should-not (pcase-tests-grep 'memq exp))
+    (should-not (pcase-tests-grep 'member exp))))
+
+(ert-deftest pcase-tests-vectors ()
+  (should (equal (pcase [1 2] (`[,x] 1) (`[,x ,y] (+ x y))) 3)))
+
+;; Local Variables:
+;; no-byte-compile: t
+;; End:
+
+;;; pcase-tests.el ends here.