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;;;; testcover-unsafep.el -- Use testcover to test unsafep's code coverage
;; Copyright (C) 2002-2020 Free Software Foundation, Inc.
;; Author: Jonathan Yavner <jyavner@member.fsf.org>
;; Keywords: safety lisp utility
;; Package: testcover
;; 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/>.
(require 'testcover)
(defvar safe-functions)
;;;These forms are all considered safe
(defconst testcover-unsafep-safe
'(((lambda (x) (* x 2)) 14)
(apply 'cdr (mapcar (lambda (x) (car x)) y))
(cond ((= x 4) 5) (t 27))
(condition-case x (car y) (error (car x)))
(dolist (x y) (message "here: %s" x))
(dotimes (x 14 (* x 2)) (message "here: %d" x))
(let (x) (dolist (y '(1 2 3) (1+ y)) (push y x)))
(let (x) (apply (lambda (x) (* x 2)) 14))
(let ((x '(2))) (push 1 x) (pop x) (add-to-list 'x 2))
(let ((x 1) (y 2)) (setq x (+ x y)))
(let ((x 1)) (let ((y (+ x 3))) (* x y)))
(let* nil (current-time))
(let* ((x 1) (y (+ x 3))) (* x y))
(mapcar (lambda (x &optional y &rest z) (setq y (+ x 2)) (* y 3)) '(1 2 3))
(mapconcat #'(lambda (var) (propertize var 'face 'bold)) '("1" "2") ", ")
(setq buffer-display-count 14 mark-active t)
;;This is not safe if you insert it into a buffer!
(propertize "x" 'display '(height (progn (delete-file "x") 1))))
"List of forms that `unsafep' should decide are safe.")
;;;These forms are considered unsafe
(defconst testcover-unsafep-unsafe
'(( (add-to-list x y)
. (unquoted x))
( (add-to-list y x)
. (unquoted y))
( (add-to-list 'y x)
. (global-variable y))
( (not (delete-file "unsafep.el"))
. (function delete-file))
( (cond (t (aset local-abbrev-table 0 0)))
. (function aset))
( (cond (t (setq unsafep-vars "")))
. (risky-local-variable unsafep-vars))
( (condition-case format-alist 1)
. (risky-local-variable format-alist))
( (condition-case x 1 (error (setq format-alist "")))
. (risky-local-variable format-alist))
( (dolist (x (sort globalvar 'car)) (princ x))
. (function sort))
( (dotimes (x 14) (delete-file "x"))
. (function delete-file))
( (let ((post-command-hook "/tmp/")) 1)
. (risky-local-variable post-command-hook))
( (let ((x (delete-file "x"))) 2)
. (function delete-file))
( (let (x) (add-to-list 'x (delete-file "x")))
. (function delete-file))
( (let (x) (condition-case y (setq x 1 z 2)))
. (global-variable z))
( (let (x) (condition-case z 1 (error (delete-file "x"))))
. (function delete-file))
( (let (x) (mapc (lambda (x) (setcar x 1)) '((1 . 2) (3 . 4))))
. (function setcar))
( (let (y) (push (delete-file "x") y))
. (function delete-file))
( (let* ((x 1)) (setq y 14))
. (global-variable y))
( (mapc 'car (list '(1 . 2) (cons 3 4) (kill-buffer "unsafep.el")))
. (function kill-buffer))
( (mapcar x y)
. (unquoted x))
( (mapcar (lambda (x) (rename-file x "x")) '("unsafep.el"))
. (function rename-file))
( (mapconcat x1 x2 " ")
. (unquoted x1))
( (pop format-alist)
. (risky-local-variable format-alist))
( (push 1 format-alist)
. (risky-local-variable format-alist))
( (setq buffer-display-count (delete-file "x"))
. (function delete-file))
;;These are actually safe (they signal errors)
( (apply '(x) '(1 2 3))
. (function (x)))
( (let (((x))) 1)
. (variable (x)))
( (let (1) 2)
. (variable 1))
)
"A-list of (FORM . REASON)... that`unsafep' should decide are unsafe.")
(declare-function unsafep-function "unsafep" (fun))
;;;#########################################################################
(defun testcover-unsafep ()
"Executes all unsafep tests and displays the coverage results."
(interactive)
(testcover-unmark-all "unsafep.el")
(testcover-start "unsafep.el")
(let (save-functions)
(dolist (x testcover-unsafep-safe)
(if (unsafep x)
(error "%S should be safe" x)))
(dolist (x testcover-unsafep-unsafe)
(if (not (equal (unsafep (car x)) (cdr x)))
(error "%S should be unsafe: %s" (car x) (cdr x))))
(setq safe-functions t)
(if (or (unsafep '(delete-file "x"))
(unsafep-function 'delete-file))
(error "safe-functions=t should allow delete-file"))
(setq safe-functions '(setcar))
(if (unsafep '(setcar x 1))
(error "safe-functions=(setcar) should allow setcar"))
(if (not (unsafep '(setcdr x 1)))
(error "safe-functions=(setcar) should not allow setcdr")))
(testcover-mark-all "unsafep.el")
(testcover-end "unsafep.el")
(message "Done"))
;; testcover-unsafep.el ends here.
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