diff options
Diffstat (limited to 'test/lisp/subr-tests.el')
| -rw-r--r-- | test/lisp/subr-tests.el | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/lisp/subr-tests.el b/test/lisp/subr-tests.el index 52b61d9fb97..86938d5dbe0 100644 --- a/test/lisp/subr-tests.el +++ b/test/lisp/subr-tests.el @@ -306,6 +306,24 @@ cf. Bug#25477." (should (eq (string-to-char (symbol-name (gensym))) ?g)) (should (eq (string-to-char (symbol-name (gensym "X"))) ?X))) +(ert-deftest subr-tests--proper-list-p () + "Test `proper-list-p' behavior." + (dotimes (length 4) + ;; Proper and dotted lists. + (let ((list (make-list length 0))) + (should (= (proper-list-p list) length)) + (should (not (proper-list-p (nconc list 0))))) + ;; Circular lists. + (dotimes (n (1+ length)) + (let ((circle (make-list (1+ length) 0))) + (should (not (proper-list-p (nconc circle (nthcdr n circle)))))))) + ;; Atoms. + (should (not (proper-list-p 0))) + (should (not (proper-list-p ""))) + (should (not (proper-list-p []))) + (should (not (proper-list-p (make-bool-vector 0 nil)))) + (should (not (proper-list-p (make-symbol "a"))))) + (ert-deftest subr-tests--assq-delete-all () "Test `assq-delete-all' behavior." (cl-flet ((new-list-fn |