test/automated/syntax-tests.el

   1 ;;; syntax-tests.el --- Testing syntax rules and basic movement -*- lexical-binding: t -*-
   2
   3 ;; Copyright (C) 2014-2016 Free Software Foundation, Inc.
   4
   5 ;; Author: Daniel Colascione <dancol@dancol.org>
   6 ;; Keywords:
   7
   8 ;; This program is free software; you can redistribute it and/or modify
   9 ;; it under the terms of the GNU General Public License as published by
  10 ;; the Free Software Foundation, either version 3 of the License, or
  11 ;; (at your option) any later version.
  12
  13 ;; This program is distributed in the hope that it will be useful,
  14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 ;; GNU General Public License for more details.
  17
  18 ;; You should have received a copy of the GNU General Public License
  19 ;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20
  21 ;;; Commentary:
  22
  23 ;;
  24
  25 ;;; Code:
  26 (require 'ert)
  27 (require 'cl-lib)
  28
  29 (defun run-up-list-test (fn data start instructions)
  30   (cl-labels ((posof (thing)
  31                 (and (symbolp thing)
  32                      (= (length (symbol-name thing)) 1)
  33                      (- (aref (symbol-name thing) 0) ?a -1))))
  34     (with-temp-buffer
  35       (set-syntax-table (make-syntax-table))
  36       ;; Use a syntax table in which single quote is a string
  37       ;; character so that we can embed the test data in a lisp string
  38       ;; literal.
  39       (modify-syntax-entry ?\' "\"")
  40       (insert data)
  41       (goto-char (posof start))
  42       (dolist (instruction instructions)
  43         (cond ((posof instruction)
  44                (funcall fn)
  45                (should (eql (point) (posof instruction))))
  46               ((symbolp instruction)
  47                (should-error (funcall fn)
  48                              :type instruction))
  49               (t (cl-assert nil nil "unknown ins")))))))
  50
  51 (defmacro define-up-list-test (name fn data start &rest expected)
  52   `(ert-deftest ,name ()
  53      (run-up-list-test ,fn ,data ',start ',expected)))
  54
  55 (define-up-list-test up-list-basic
  56   (lambda () (up-list))
  57   (or "(1 1 (1 1) 1 (1 1) 1)")
  58   ;;   abcdefghijklmnopqrstuv
  59   i k v scan-error)
  60
  61 (define-up-list-test up-list-with-forward-sexp-function
  62   (lambda ()
  63     (let ((forward-sexp-function
  64            (lambda (&optional arg)
  65              (let ((forward-sexp-function nil))
  66                (forward-sexp arg)))))
  67       (up-list)))
  68   (or "(1 1 (1 1) 1 (1 1) 1)")
  69   ;;   abcdefghijklmnopqrstuv
  70   i k v scan-error)
  71
  72 (define-up-list-test up-list-out-of-string
  73   (lambda () (up-list 1 t))
  74   (or "1 (1 '2 2 (2 2 2' 1) 1")
  75   ;;   abcdefghijklmnopqrstuvwxy
  76   o r u scan-error)
  77
  78 (define-up-list-test up-list-cross-string
  79   (lambda () (up-list 1 t))
  80   (or "(1 '2 ( 2' 1 '2 ) 2' 1)")
  81   ;;   abcdefghijklmnopqrstuvwxy
  82   i r u x scan-error)
  83
  84 (define-up-list-test up-list-no-cross-string
  85   (lambda () (up-list 1 t t))
  86   (or "(1 '2 ( 2' 1 '2 ) 2' 1)")
  87   ;;   abcdefghijklmnopqrstuvwxy
  88   i k x scan-error)
  89
  90 (define-up-list-test backward-up-list-basic
  91   (lambda () (backward-up-list))
  92   (or "(1 1 (1 1) 1 (1 1) 1)")
  93   ;;   abcdefghijklmnopqrstuv
  94   i f a scan-error)
  95
  96 (provide 'syntax-tests)
  97 ;;; syntax-tests.el ends here