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;;; eval-tests.el --- unit tests for src/eval.c -*- lexical-binding: t; -*-
;; Copyright (C) 2016-2017 Free Software Foundation, Inc.
;; Author: Philipp Stephani <phst@google.com>
;; 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:
;; Unit tests for src/eval.c.
;;; Code:
(require 'ert)
(ert-deftest eval-tests--bug24673 ()
"Checks that Bug#24673 has been fixed."
;; This should not crash.
(should-error (funcall '(closure)) :type 'invalid-function))
(defvar byte-compile-debug)
(ert-deftest eval-tests--bugs-24912-and-24913 ()
"Checks that Emacs doesn’t accept weird argument lists.
Bug#24912 and Bug#24913."
(dolist (args '((&optional) (&rest) (&optional &rest) (&rest &optional)
(&optional &rest a) (&optional a &rest)
(&rest a &optional) (&rest &optional a)
(&optional &optional) (&optional &optional a)
(&optional a &optional b)
(&rest &rest) (&rest &rest a)
(&rest a &rest b)))
(should-error (eval `(funcall (lambda ,args)) t) :type 'invalid-function)
(should-error (byte-compile-check-lambda-list args))
(let ((byte-compile-debug t))
(should-error (eval `(byte-compile (lambda ,args)) t)))))
(dolist (form '(let let*))
(dolist (arg '(1 "a" [a]))
(eval
`(ert-deftest ,(intern (format "eval-tests--%s--%s" form (type-of arg))) ()
,(format "Check that the first argument of `%s' cannot be a %s"
form (type-of arg))
(should-error (,form ,arg) :type 'wrong-type-argument))
t)))
(ert-deftest eval-tests--if-dot-string ()
"Check that Emacs rejects (if . \"string\")."
(should-error (eval '(if . "abc")) :type 'wrong-type-argument)
(let ((if-tail (list '(setcdr if-tail "abc") t)))
(should-error (eval (cons 'if if-tail))))
(let ((if-tail (list '(progn (setcdr if-tail "abc") nil) t)))
(should-error (eval (cons 'if if-tail)))))
(ert-deftest eval-tests--let-with-circular-defs ()
"Check that Emacs reports an error for (let VARS ...) when VARS is circular."
(let ((vars (list 'v)))
(setcdr vars vars)
(dolist (let-sym '(let let*))
(should-error (eval (list let-sym vars))))))
(ert-deftest eval-tests--mutating-cond ()
"Check that Emacs doesn't crash on a cond clause that mutates during eval."
(let ((clauses (list '((progn (setcdr clauses "ouch") nil)))))
(should-error (eval (cons 'cond clauses)))))
;;; eval-tests.el ends here
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