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;;; spelling-tests.el --- Test suite for so-long.el -*- lexical-binding: t; -*-
;; Copyright (C) 2019-2022 Free Software Foundation, Inc.
;; Author: Phil Sainty <psainty@orcon.net.nz>
;; Keywords: convenience
;; 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/>.
;;; Code:
(require 'ert)
(require 'ispell)
(require 'cl-lib)
;; This test is tagged as :unstable on the basis that there may be
;; inconsistencies between spell-checking facilities on different
;; systems, which may cause the test to be unreliable in practice.
;; As such the Emacs test Makefile will skip it by default, but you
;; can run it manually with:
;;
;; make lisp/so-long-tests/spelling-tests SELECTOR=t
;; Only define the test if spell-checking is possible.
(when (and ispell-program-name
(executable-find ispell-program-name)
(condition-case ()
(progn (ispell-check-version) t)
(error nil))
(member "british" (ispell-valid-dictionary-list)))
(ert-deftest so-long-spelling ()
"Check the spelling in the source code."
:tags '(:unstable) ;; It works for me, but I'm not sure about others.
;; There could be different "british" dictionaries yielding different
;; results, for instance.
;;
;; The Emacs test Makefile's use of HOME=/nonexistent triggers an error
;; when starting the inferior ispell process, so we set HOME to a valid
;; (but empty) temporary directory for this test.
(let* ((tmpdir (make-temp-file "so-long." :dir ".ispell"))
(process-environment (cons (format "HOME=%s" tmpdir)
process-environment))
(find-spelling-mistake
(unwind-protect
(cl-letf (((symbol-function 'ispell-command-loop)
(lambda (_miss _guess word _start _end)
(message "Unrecognised word: %s." word)
(throw 'mistake t))))
(catch 'mistake
(find-library "so-long")
(ispell-buffer)
nil))
(delete-directory tmpdir))))
(should (not find-spelling-mistake)))))
;;; spelling-tests.el ends here
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