1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
;;; fill-tests.el --- ERT tests for fill.el -*- lexical-binding: t -*-
;; Copyright (C) 2017-2025 Free Software Foundation, Inc.
;; Author: Marcin Borkowski <mbork@mbork.pl>
;; Keywords: text
;; 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:
;; This package defines tests for the filling feature, specifically
;; the `fill-polish-nobreak-p' function.
;;; Code:
(require 'ert)
(require 'ert-x)
(ert-deftest fill-test-no-fill-polish-nobreak-p nil
"Tests of the `fill-polish-nobreak-p' function."
(with-temp-buffer
(insert "Abc d efg (h ijk).")
(setq fill-column 8)
(setq-local fill-nobreak-predicate '())
(fill-paragraph)
(should (string= (buffer-string) "Abc d\nefg (h\nijk).")))
(with-temp-buffer
(insert "Abc d efg (h ijk).")
(setq fill-column 8)
(setq-local fill-nobreak-predicate '(fill-polish-nobreak-p))
(fill-paragraph)
(should (string= (buffer-string) "Abc\nd efg\n(h ijk)."))))
(ert-deftest fill-test-unbreakable-paragraph ()
;; See bug#45720 and bug#53537.
:expected-result :failed
(with-temp-buffer
(let ((string "aaa = baaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"))
(insert string)
(goto-char (point-min))
(search-forward "b")
(let* ((pos (point))
(beg (pos-bol))
(end (pos-eol))
(fill-prefix (make-string (- pos beg) ?\s))
;; `fill-column' is too small to accommodate the current line
(fill-column (- end beg 10)))
(fill-region-as-paragraph beg end nil nil pos))
(should (equal (buffer-string) string)))))
(ert-deftest fill-test-breakable-paragraph ()
(with-temp-buffer
(let ((string "aaa = baaaaaaaa aaaaaaaaaa aaaaaaaaaa\n"))
(insert string)
(goto-char (point-min))
(search-forward "b")
(let* ((pos (point))
(beg (pos-bol))
(end (pos-eol))
(fill-prefix (make-string (- pos beg) ?\s))
;; `fill-column' is too small to accommodate the current line
(fill-column (- end beg 10)))
(fill-region-as-paragraph beg end nil nil pos))
(should (equal
(buffer-string)
"aaa = baaaaaaaa aaaaaaaaaa\n aaaaaaaaaa\n")))))
(ert-deftest test-fill-end-period ()
(should
(equal
(with-temp-buffer
(text-mode)
(auto-fill-mode)
(insert "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eius.")
(self-insert-command 1 ?\s)
(buffer-string))
"Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eius. "))
(should
(equal
(with-temp-buffer
(text-mode)
(auto-fill-mode)
(insert "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eius.Foo")
(forward-char -3)
(self-insert-command 1 ?\s)
(buffer-string))
"Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
eius. Foo")))
(ert-deftest test-fill-haskell ()
(should
(equal
(with-temp-buffer
(asm-mode)
(dolist (line '(" ;; a b c"
" ;; d e f"
" ;; x y z"
" ;; w"))
(insert line "\n"))
(goto-char (point-min))
(end-of-line)
(setf fill-column 10)
(fill-paragraph nil)
(buffer-string))
" ;; a b c
;; d e f
;; x y z
;; w
")))
(ert-deftest fill-test-fill-region ()
"Test the `fill-region' function."
(ert-test-erts-file (ert-resource-file "fill-region.erts")
(lambda ()
(fill-region
(point)
(progn
(goto-char (point-max))
(forward-line -1)
(beginning-of-line)
(point))))))
(ert-deftest fill-test-fill-region-as-paragraph-semlf ()
"Test the `fill-region-as-paragraph-semlf' function."
(ert-test-erts-file (ert-resource-file "semlf-fill-region-as-paragraph.erts")
(lambda ()
(setq-local fill-column 35)
(fill-region-as-paragraph-semlf
(point)
(progn
(goto-char (point-max))
(forward-line -1)
(beginning-of-line)
(point))))))
(ert-deftest fill-test-semlf-fill-region ()
"Test `fill-region' with `fill-region-as-paragraph-semlf'."
(ert-test-erts-file (ert-resource-file "semlf-fill-region.erts")
(lambda ()
(setq-local fill-region-as-paragraph-function
#'fill-region-as-paragraph-semlf)
(fill-region
(point)
(progn
(goto-char (point-max))
(forward-line -1)
(beginning-of-line)
(point))))))
(ert-deftest fill-test-semlf ()
"Test semantic-linefeed filling."
(ert-test-erts-file (ert-resource-file "semlf.erts")
(lambda ()
(fill-paragraph-semlf))))
(ert-deftest fill-test-semlf-justify ()
"Test semantic-linefeed filling with text justification."
(ert-test-erts-file (ert-resource-file "semlf-justify.erts")
(lambda ()
(fill-paragraph-semlf 'justify))))
(ert-deftest fill-test-semlf-sentence-end-double-space ()
"Test semantic-linefeed filling with `sentence-end-double-space'."
(ert-test-erts-file (ert-resource-file "semlf-sentence-end-double-space.erts")
(lambda ()
(setq-local sentence-end-double-space nil)
(fill-paragraph-semlf))))
(ert-deftest fill-test-semlf-fill-column ()
"Test semantic-linefeed filling with `fill-column'."
(ert-test-erts-file (ert-resource-file "semlf-fill-column.erts")
(lambda ()
(setq-local fill-column 35)
(fill-paragraph-semlf))))
(ert-deftest fill-test-semlf-punctuation-marks ()
"Test semantic-linefeed filling with different punctuation marks."
(ert-test-erts-file (ert-resource-file "semlf-punctuation-marks.erts")
(lambda ()
(fill-paragraph-semlf))))
(ert-deftest fill-test-semlf-twice ()
"Test filling the same text twice using semantic linefeeds."
(ert-test-erts-file (ert-resource-file "semlf-twice.erts")
(lambda ()
(goto-char (point-min))
(fill-paragraph-semlf)
(goto-char (point-min))
(fill-paragraph-semlf))))
(ert-deftest fill-test-semlf-fill-prefix ()
"Test semantic-linefeed filling with different fill prefixes."
(ert-test-erts-file (ert-resource-file "semlf-fill-prefix.erts")
(lambda ()
(fill-paragraph-semlf))))
(ert-deftest fill-test-semlf-indented-block ()
"Test semantic-linefeed filling with an indented block."
(ert-test-erts-file (ert-resource-file "semlf-indented-block.erts")
(lambda ()
(fill-paragraph-semlf))))
(ert-deftest fill-test-semlf-revert ()
"Test that semantic-linefeed filling can be reverted."
(ert-test-erts-file (ert-resource-file "semlf-revert.erts")
(lambda ()
(fill-paragraph)
(fill-paragraph-semlf)
(fill-paragraph))))
(ert-deftest fill-test-semlf-emacs-lisp-mode ()
"Test semantic-linefeed filling with `emacs-lisp-mode'."
(ert-test-erts-file (ert-resource-file "semlf-emacs-lisp-mode.erts")
(lambda ()
(emacs-lisp-mode)
(fill-paragraph-semlf))))
(ert-deftest fill-test-semlf-c-mode ()
"Test semantic-linefeed filling with `c-mode'."
(ert-test-erts-file (ert-resource-file "semlf-c-mode.erts")
(lambda ()
(c-mode)
(fill-paragraph-semlf))))
(ert-deftest fill-test-semlf-org-mode ()
"Test semantic-linefeed filling with `org-mode'."
(ert-test-erts-file (ert-resource-file "semlf-org-mode.erts")
(lambda ()
(org-mode)
(fill-paragraph-semlf))))
(declare-function markdown-mode "markdown-mode")
(ert-deftest fill-test-semlf-markdown-mode ()
"Test semantic-linefeed filling with `markdown-mode'."
(skip-unless (functionp 'markdown-mode))
(ert-test-erts-file (ert-resource-file "semlf-markdown-mode.erts")
(lambda ()
(markdown-mode)
(fill-paragraph-semlf))))
(provide 'fill-tests)
;;; fill-tests.el ends here
|
