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;;; lisp-tests.el --- Test Lisp editing commands -*- lexical-binding: t; -*-
;; Copyright (C) 2013-2017 Free Software Foundation, Inc.
;; Author: Aaron S. Hawley <aaron.s.hawley@gmail.com>
;; Author: Stefan Monnier <monnier@iro.umontreal.ca>
;; Author: Daniel Colascione <dancol@dancol.org>
;; Keywords: internal
;; 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:
;; Testing of `forward-sexp' and related functions.
;;; Code:
(require 'ert)
(require 'python)
(require 'cl-lib)
(ert-deftest lisp-forward-sexp-1-empty-parens ()
"Test basics of \\[forward-sexp]."
(with-temp-buffer
(insert "()")
(goto-char (point-min))
(should (null
(forward-sexp 1)))))
(ert-deftest lisp-forward-sexp-1-error-mismatch ()
"Test basics of \\[forward-sexp]."
(with-temp-buffer
(insert "(")
(goto-char (point-min))
(should-error
(forward-sexp 1))))
(ert-deftest lisp-backward-sexp-1-empty-parens ()
"Test basics of \\[backward-sexp]."
(with-temp-buffer
(insert "()")
(should (null
(forward-sexp -1)))))
(ert-deftest lisp-backward-sexp-1-error-mismatch ()
"Test mismatched parens with \\[backward-sexp]."
(with-temp-buffer
(insert "(")
(should-error
(forward-sexp -1))))
(ert-deftest lisp-forward-sexp-1-eobp ()
"Test \\[forward-sexp] at `eobp'."
(with-temp-buffer
(insert "()")
(should (null ;; (should-error ;; No, per #13994
(forward-sexp 1)))))
(ert-deftest lisp-backward-sexp-1-eobp ()
"Test \\[backward-sexp] at `bobp'."
(with-temp-buffer
(insert "()")
(goto-char (point-min))
(should (null ;; (should-error ;; No, per #13994
(forward-sexp -1)))))
(ert-deftest lisp-forward-sexp-2-eobp ()
"Test \\[forward-sexp] beyond `eobp'."
(with-temp-buffer
(insert "()")
(goto-char (point-min))
(should (null ;; (should-error ;; No, per #13994
(forward-sexp 2)))
(should (eobp))))
(ert-deftest lisp-backward-sexp-2-bobp ()
"Test \\[backward-sexp] beyond `bobp'."
(with-temp-buffer
(insert "()")
(should (null ;; (should-error ;; No, per #13994
(forward-sexp -2)))
(should (bobp))))
(ert-deftest lisp-forward-sexp-2-eobp-and-subsequent ()
"Test \\[forward-sexp] beyond `eobp' and again."
(with-temp-buffer
(insert "()")
(goto-char (point-min))
(should (null ;; (should-error ;; No, per #13994
(forward-sexp 2)))
(should (eobp))
(should (null ;; (should-error ;; No, per #13994
(forward-sexp 1)))))
(ert-deftest lisp-backward-sexp-2-bobp-and-subsequent ()
"Test \\[backward-sexp] ahead of `bobp' and again."
(with-temp-buffer
(insert "()")
(should (null ;; (should-error ;; No, per #13994
(forward-sexp -2)))
(should (bobp))
(should (null ;; (should-error ;; No, per #13994
(forward-sexp -1)))))
(ert-deftest lisp-delete-pair-parens ()
"Test \\[delete-pair] with parens."
(with-temp-buffer
(insert "(foo)")
(goto-char (point-min))
(delete-pair)
(should (string-equal "foo" (buffer-string)))))
(ert-deftest lisp-delete-pair-quotation-marks ()
"Test \\[delete-pair] with quotation marks."
(with-temp-buffer
(insert "\"foo\"")
(goto-char (point-min))
(delete-pair)
(should (string-equal "foo" (buffer-string)))))
(ert-deftest lisp-delete-pair-quotes-in-text-mode ()
"Test \\[delete-pair] against string in Text Mode for #15014."
(with-temp-buffer
(text-mode)
(insert "\"foo\"")
(goto-char (point-min))
(delete-pair)
(should (string-equal "fo\"" (buffer-string)))))
(ert-deftest lisp-delete-pair-quotes-text-mode-syntax-table ()
"Test \\[delete-pair] with modified Text Mode syntax for #15014."
(with-temp-buffer
(text-mode)
(let ((st (copy-syntax-table text-mode-syntax-table)))
(with-syntax-table st
;; (modify-syntax-entry ?\" "." text-mode-syntax-table)
(modify-syntax-entry ?\" "$" st)
(insert "\"foo\"")
(goto-char (point-min))
(delete-pair)
(should (string-equal "foo" (buffer-string)))))))
(ert-deftest lisp-forward-sexp-elisp-inside-symbol ()
"Test \\[forward-sexp] on symbol in Emacs Lisp Mode for #20492."
(with-temp-buffer
(emacs-lisp-mode)
(insert "hide-ifdef-env ")
(insert (concat (number-sequence 32 126)))
(goto-char (point-min))
(re-search-forward "hide" nil t) ;; (forward-char 4)
(should (looking-at "-"))
(forward-sexp)
(should (looking-at " "))))
(ert-deftest lisp-forward-sexp-elisp-quoted-symbol ()
"Test \\[forward-sexp] on symbol in Emacs Lisp Mode for #20492."
(with-temp-buffer
(emacs-lisp-mode)
(insert "`hide-ifdef-env'.")
(goto-char (point-min))
(re-search-forward "hide" nil t) ;; (forward-char 5)
(should (= ?- (char-after)))
(forward-sexp)
(should (= ?. (char-before)))))
(ert-deftest lisp-forward-sexp-python-triple-quoted-string ()
"Test \\[forward-sexp] on Python doc strings for #11321."
(with-temp-buffer
(insert "\"\"\"Triple-quoted string\"\"\"")
(goto-char (point-min))
(let ((python-indent-guess-indent-offset nil))
(python-mode))
(forward-sexp)
(should (eobp))))
(ert-deftest lisp-forward-sexp-python-triple-quotes-string ()
"Test \\[forward-sexp] on Python doc strings for #11321."
(with-temp-buffer
(insert "'''Triple-quoted string'''")
(goto-char (point-min))
(let ((python-indent-guess-indent-offset nil))
(python-mode))
(forward-sexp)
(should (eobp))))
(ert-deftest lisp-forward-sexp-emacs-lisp-semi-char-error ()
"Test \\[forward-sexp] on expression with unquoted semicolon per #4030."
(with-temp-buffer
(emacs-lisp-mode)
(insert "(insert ?;)")
(goto-char (point-min))
(should-error (forward-sexp)))) ;; FIXME: Shouldn't be an error.
(ert-deftest lisp-forward-sexp-emacs-lisp-quote-char ()
"Test \\[forward-sexp] on expression with unquoted quote per #4030."
(with-temp-buffer
(emacs-lisp-mode)
(insert "(insert ?\")")
(goto-char (point-min))
(should-error (forward-sexp)))) ;; FIXME: Shouldn't be an error.
;; Test some core Elisp rules.
(ert-deftest core-elisp-tests-1-defvar-in-let ()
"Test some core Elisp rules."
(with-temp-buffer
;; Check that when defvar is run within a let-binding, the toplevel default
;; is properly initialized.
(should (equal (list (let ((c-e-x 1)) (defvar c-e-x 2) c-e-x) c-e-x)
'(1 2)))
(should (equal (list (let ((c-e-x 1))
(defcustom c-e-x 2 "doc" :group 'blah :type 'integer) c-e-x)
c-e-x)
'(1 2)))))
(ert-deftest core-elisp-tests-2-window-configurations ()
"Test properties of window-configurations."
(let ((wc (current-window-configuration)))
(with-current-buffer (window-buffer (frame-selected-window))
(push-mark)
(activate-mark))
(set-window-configuration wc)
(should (or (not mark-active) (mark)))))
(ert-deftest core-elisp-tests-3-backquote ()
(should (eq 3 (eval ``,,'(+ 1 2)))))
;; Test up-list and backward-up-list.
(defun lisp-run-up-list-test (fn data start instructions)
(cl-labels ((posof (thing)
(and (symbolp thing)
(= (length (symbol-name thing)) 1)
(- (aref (symbol-name thing) 0) ?a -1))))
(with-temp-buffer
(set-syntax-table (make-syntax-table))
;; Use a syntax table in which single quote is a string
;; character so that we can embed the test data in a lisp string
;; literal.
(modify-syntax-entry ?\' "\"")
(insert data)
(goto-char (posof start))
(dolist (instruction instructions)
(cond ((posof instruction)
(funcall fn)
(should (eql (point) (posof instruction))))
((symbolp instruction)
(should-error (funcall fn)
:type instruction))
(t (cl-assert nil nil "unknown ins")))))))
(defmacro define-lisp-up-list-test (name fn data start &rest expected)
`(ert-deftest ,name ()
(lisp-run-up-list-test ,fn ,data ',start ',expected)))
(define-lisp-up-list-test up-list-basic
(lambda () (up-list))
(or "(1 1 (1 1) 1 (1 1) 1)")
;; abcdefghijklmnopqrstuv
i k v scan-error)
(define-lisp-up-list-test up-list-with-forward-sexp-function
(lambda ()
(let ((forward-sexp-function
(lambda (&optional arg)
(let ((forward-sexp-function nil))
(forward-sexp arg)))))
(up-list)))
(or "(1 1 (1 1) 1 (1 1) 1)")
;; abcdefghijklmnopqrstuv
i k v scan-error)
(define-lisp-up-list-test up-list-out-of-string
(lambda () (up-list 1 t))
(or "1 (1 '2 2 (2 2 2' 1) 1")
;; abcdefghijklmnopqrstuvwxy
o r u scan-error)
(define-lisp-up-list-test up-list-cross-string
(lambda () (up-list 1 t))
(or "(1 '2 ( 2' 1 '2 ) 2' 1)")
;; abcdefghijklmnopqrstuvwxy
i r u x scan-error)
(define-lisp-up-list-test up-list-no-cross-string
(lambda () (up-list 1 t t))
(or "(1 '2 ( 2' 1 '2 ) 2' 1)")
;; abcdefghijklmnopqrstuvwxy
i k x scan-error)
(define-lisp-up-list-test backward-up-list-basic
(lambda () (backward-up-list))
(or "(1 1 (1 1) 1 (1 1) 1)")
;; abcdefghijklmnopqrstuv
i f a scan-error)
(provide 'lisp-tests)
;;; lisp-tests.el ends here
|
