1 ;;; seq-tests.el --- Tests for sequences.el
3 ;; Copyright (C) 2014-2016 Free Software Foundation, Inc.
5 ;; Author: Nicolas Petton <nicolas@petton.fr>
6 ;; Maintainer: emacs-devel@gnu.org
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software: you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation, either version 3 of the License, or
13 ;; (at your option) any later version.
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
25 ;; Tests for sequences.el
32 (defmacro with-test-sequences
(spec &rest body
)
33 "Successively bind VAR to a list, vector, and string built from SEQ.
34 Evaluate BODY for each created sequence.
37 (declare (indent 1) (debug ((symbolp form
) body
)))
38 (let ((initial-seq (make-symbol "initial-seq")))
39 `(let ((,initial-seq
,(cadr spec
)))
41 `(let ((,(car spec
) (apply (function ,s
) ,initial-seq
)))
43 '(list vector string
)))))
45 (defun same-contents-p (seq1 seq2
)
46 "Return t if SEQ1 and SEQ2 have the same contents, nil otherwise."
47 (equal (append seq1
'()) (append seq2
'())))
49 (defun test-sequences-evenp (integer)
50 "Return t if INTEGER is even."
51 (eq (logand integer
1) 0))
53 (defun test-sequences-oddp (integer)
54 "Return t if INTEGER is odd."
55 (not (test-sequences-evenp integer
)))
57 (ert-deftest test-setf-seq-elt
()
58 (with-test-sequences (seq '(1 2 3))
59 (setf (seq-elt seq
1) 4)
60 (should (= 4 (seq-elt seq
1)))))
62 (ert-deftest test-seq-drop
()
63 (with-test-sequences (seq '(1 2 3 4))
64 (should (equal (seq-drop seq
0) seq
))
65 (should (equal (seq-drop seq
1) (seq-subseq seq
1)))
66 (should (equal (seq-drop seq
2) (seq-subseq seq
2)))
67 (should (seq-empty-p (seq-drop seq
4)))
68 (should (seq-empty-p (seq-drop seq
10))))
69 (with-test-sequences (seq '())
70 (should (seq-empty-p (seq-drop seq
0)))
71 (should (seq-empty-p (seq-drop seq
1)))))
73 (ert-deftest test-seq-take
()
74 (with-test-sequences (seq '(2 3 4 5))
75 (should (seq-empty-p (seq-take seq
0)))
76 (should (= (seq-length (seq-take seq
1)) 1))
77 (should (= (seq-elt (seq-take seq
1) 0) 2))
78 (should (same-contents-p (seq-take seq
3) '(2 3 4)))
79 (should (equal (seq-take seq
10) seq
))))
81 (ert-deftest test-seq-drop-while
()
82 (with-test-sequences (seq '(1 3 2 4))
83 (should (equal (seq-drop-while #'test-sequences-oddp seq
)
85 (should (equal (seq-drop-while #'test-sequences-evenp seq
)
87 (should (seq-empty-p (seq-drop-while #'numberp seq
))))
88 (with-test-sequences (seq '())
89 (should (seq-empty-p (seq-drop-while #'test-sequences-oddp seq
)))))
91 (ert-deftest test-seq-take-while
()
92 (with-test-sequences (seq '(1 3 2 4))
93 (should (equal (seq-take-while #'test-sequences-oddp seq
)
95 (should (seq-empty-p (seq-take-while #'test-sequences-evenp seq
)))
96 (should (equal (seq-take-while #'numberp seq
) seq
)))
97 (with-test-sequences (seq '())
98 (should (seq-empty-p (seq-take-while #'test-sequences-oddp seq
)))))
100 (ert-deftest test-seq-filter
()
101 (with-test-sequences (seq '(6 7 8 9 10))
102 (should (equal (seq-filter #'test-sequences-evenp seq
) '(6 8 10)))
103 (should (equal (seq-filter #'test-sequences-oddp seq
) '(7 9)))
104 (should (equal (seq-filter (lambda (elt) nil
) seq
) '())))
105 (with-test-sequences (seq '())
106 (should (equal (seq-filter #'test-sequences-evenp seq
) '()))))
108 (ert-deftest test-seq-remove
()
109 (with-test-sequences (seq '(6 7 8 9 10))
110 (should (equal (seq-remove #'test-sequences-evenp seq
) '(7 9)))
111 (should (equal (seq-remove #'test-sequences-oddp seq
) '(6 8 10)))
112 (should (same-contents-p (seq-remove (lambda (elt) nil
) seq
) seq
)))
113 (with-test-sequences (seq '())
114 (should (equal (seq-remove #'test-sequences-evenp seq
) '()))))
116 (ert-deftest test-seq-count
()
117 (with-test-sequences (seq '(6 7 8 9 10))
118 (should (equal (seq-count #'test-sequences-evenp seq
) 3))
119 (should (equal (seq-count #'test-sequences-oddp seq
) 2))
120 (should (equal (seq-count (lambda (elt) nil
) seq
) 0)))
121 (with-test-sequences (seq '())
122 (should (equal (seq-count #'test-sequences-evenp seq
) 0))))
124 (ert-deftest test-seq-reduce
()
125 (with-test-sequences (seq '(1 2 3 4))
126 (should (= (seq-reduce #'+ seq
0) 10))
127 (should (= (seq-reduce #'+ seq
5) 15)))
128 (with-test-sequences (seq '())
129 (should (eq (seq-reduce #'+ seq
0) 0))
130 (should (eq (seq-reduce #'+ seq
7) 7))))
132 (ert-deftest test-seq-some
()
133 (with-test-sequences (seq '(4 3 2 1))
134 (should (seq-some #'test-sequences-evenp seq
))
135 (should (seq-some #'test-sequences-oddp seq
))
136 (should-not (seq-some (lambda (elt) (> elt
10)) seq
)))
137 (with-test-sequences (seq '())
138 (should-not (seq-some #'test-sequences-oddp seq
)))
139 (should (seq-some #'null
'(1 nil
2))))
141 (ert-deftest test-seq-find
()
142 (with-test-sequences (seq '(4 3 2 1))
143 (should (= 4 (seq-find #'test-sequences-evenp seq
)))
144 (should (= 3 (seq-find #'test-sequences-oddp seq
)))
145 (should-not (seq-find (lambda (elt) (> elt
10)) seq
)))
146 (should-not (seq-find #'null
'(1 nil
2)))
147 (should-not (seq-find #'null
'(1 nil
2) t
))
148 (should-not (seq-find #'null
'(1 2 3)))
149 (should (seq-find #'null
'(1 2 3) 'sentinel
)))
151 (ert-deftest test-seq-contains
()
152 (with-test-sequences (seq '(3 4 5 6))
153 (should (seq-contains seq
3))
154 (should-not (seq-contains seq
7)))
155 (with-test-sequences (seq '())
156 (should-not (seq-contains seq
3))
157 (should-not (seq-contains seq nil
))))
159 (ert-deftest test-seq-every-p
()
160 (with-test-sequences (seq '(43 54 22 1))
161 (should (seq-every-p (lambda (elt) t
) seq
))
162 (should-not (seq-every-p #'test-sequences-oddp seq
))
163 (should-not (seq-every-p #'test-sequences-evenp seq
)))
164 (with-test-sequences (seq '(42 54 22 2))
165 (should (seq-every-p #'test-sequences-evenp seq
))
166 (should-not (seq-every-p #'test-sequences-oddp seq
)))
167 (with-test-sequences (seq '())
168 (should (seq-every-p #'identity seq
))
169 (should (seq-every-p #'test-sequences-evenp seq
))))
171 (ert-deftest test-seq-empty-p
()
172 (with-test-sequences (seq '(0))
173 (should-not (seq-empty-p seq
)))
174 (with-test-sequences (seq '(0 1 2))
175 (should-not (seq-empty-p seq
)))
176 (with-test-sequences (seq '())
177 (should (seq-empty-p seq
))))
179 (ert-deftest test-seq-sort
()
180 (should (equal (seq-sort #'< "cbaf") "abcf"))
181 (should (equal (seq-sort #'< '(2 1 9 4)) '(1 2 4 9)))
182 (should (equal (seq-sort #'< [2 1 9 4]) [1 2 4 9]))
183 (should (equal (seq-sort #'< "") "")))
185 (ert-deftest test-seq-uniq
()
186 (with-test-sequences (seq '(2 4 6 8 6 4 3))
187 (should (equal (seq-uniq seq
) '(2 4 6 8 3))))
188 (with-test-sequences (seq '(3 3 3 3 3))
189 (should (equal (seq-uniq seq
) '(3))))
190 (with-test-sequences (seq '())
191 (should (equal (seq-uniq seq
) '()))))
193 (ert-deftest test-seq-subseq
()
194 (with-test-sequences (seq '(2 3 4 5))
195 (should (equal (seq-subseq seq
0 4) seq
))
196 (should (same-contents-p (seq-subseq seq
2 4) '(4 5)))
197 (should (same-contents-p (seq-subseq seq
1 3) '(3 4)))
198 (should (same-contents-p (seq-subseq seq
1 -
1) '(3 4))))
199 (should (vectorp (seq-subseq [2 3 4 5] 2)))
200 (should (stringp (seq-subseq "foo" 2 3)))
201 (should (listp (seq-subseq '(2 3 4 4) 2 3)))
202 (should-error (seq-subseq '(1 2 3) 4))
203 (should-not (seq-subseq '(1 2 3) 3))
204 (should (seq-subseq '(1 2 3) -
3))
205 (should-error (seq-subseq '(1 2 3) 1 4))
206 (should (seq-subseq '(1 2 3) 1 3))
207 (should-error (seq-subseq '() -
1))
208 (should-error (seq-subseq [] -
1))
209 (should-error (seq-subseq "" -
1))
210 (should-not (seq-subseq '() 0))
211 (should-error (seq-subseq '() 0 -
1)))
213 (ert-deftest test-seq-concatenate
()
214 (with-test-sequences (seq '(2 4 6))
215 (should (equal (seq-concatenate 'string seq
[8]) (string 2 4 6 8)))
216 (should (equal (seq-concatenate 'list seq '(8 10)) '(2 4 6 8 10)))
217 (should (equal (seq-concatenate 'vector seq '(8 10)) [2 4 6 8 10]))
218 (should (equal (seq-concatenate 'vector nil '(8 10)) [8 10]))
219 (should (equal (seq-concatenate 'vector seq nil) [2 4 6]))))
221 (ert-deftest test-seq-mapcat ()
222 (should (equal (seq-mapcat #'seq-reverse '((3 2 1) (6 5 4)))
224 (should (equal (seq-mapcat #'seq-reverse '[(3 2 1) (6 5 4)])
226 (should (equal (seq-mapcat #'seq-reverse '((3 2 1) (6 5 4)) 'vector)
229 (ert-deftest test-seq-partition ()
230 (should (same-contents-p (seq-partition '(0 1 2 3 4 5 6 7) 3)
231 '((0 1 2) (3 4 5) (6 7))))
232 (should (same-contents-p (seq-partition '[0 1 2 3 4 5 6 7] 3)
233 '([0 1 2] [3 4 5] [6 7])))
234 (should (same-contents-p (seq-partition "Hello world" 2)
235 '("He" "ll" "o " "wo" "rl" "d")))
236 (should (equal (seq-partition '() 2) '()))
237 (should (equal (seq-partition '(1 2 3) -1) '())))
239 (ert-deftest test-seq-group-by ()
240 (with-test-sequences (seq '(1 2 3 4))
241 (should (equal (seq-group-by #'test-sequences-oddp seq)
242 '((t 1 3) (nil 2 4)))))
243 (should (equal (seq-group-by #'car '((a 1) (b 3) (c 4) (a 2)))
244 '((b (b 3)) (c (c 4)) (a (a 1) (a 2))))))
246 (ert-deftest test-seq-reverse ()
247 (with-test-sequences (seq '(1 2 3 4))
248 (should (same-contents-p (seq-reverse seq) '(4 3 2 1)))
249 (should (equal (type-of (seq-reverse seq))
252 (ert-deftest test-seq-into ()
253 (let* ((vector [1 2 3])
254 (list (seq-into vector 'list)))
255 (should (same-contents-p vector list))
256 (should (listp list)))
257 (let* ((list '(hello world))
258 (vector (seq-into list 'vector)))
259 (should (same-contents-p vector list))
260 (should (vectorp vector)))
261 (let* ((string "hello")
262 (list (seq-into string 'list)))
263 (should (same-contents-p string list))
264 (should (stringp string)))
265 (let* ((string "hello")
266 (vector (seq-into string 'vector)))
267 (should (same-contents-p string vector))
268 (should (stringp string)))
270 (vector (seq-into list 'vector)))
271 (should (same-contents-p list vector))
272 (should (vectorp vector))))
274 (ert-deftest test-seq-intersection ()
277 (should (same-contents-p (seq-intersection v1 v2)
279 (let ((l1 '(2 3 4 5))
281 (should (same-contents-p (seq-intersection l1 l2)
285 (should (seq-empty-p (seq-intersection v1 v2)))))
287 (ert-deftest test-seq-difference ()
290 (should (same-contents-p (seq-difference v1 v2)
292 (let ((l1 '(2 3 4 5))
294 (should (same-contents-p (seq-difference l1 l2)
298 (should (seq-empty-p (seq-difference v1 v2)))))
300 (ert-deftest test-seq-let ()
301 (with-test-sequences (seq '(1 2 3 4))
302 (seq-let (a b c d e) seq
308 (seq-let (a b &rest others) seq
311 (should (same-contents-p others (seq-drop seq 2)))))
312 (let ((seq '(1 (2 (3 (4))))))
313 (seq-let (_ (_ (_ (a)))) seq
321 (ert-deftest test-seq-min-max ()
322 (with-test-sequences (seq '(4 5 3 2 0 4))
323 (should (= (seq-min seq) 0))
324 (should (= (seq-max seq) 5))))
326 (ert-deftest test-seq-into-sequence ()
327 (with-test-sequences (seq '(1 2 3))
328 (should (eq seq (seq-into-sequence seq)))
329 (should-error (seq-into-sequence 2))))
331 (ert-deftest test-seq-position ()
332 (with-test-sequences (seq '(2 4 6))
333 (should (null (seq-position seq 1)))
334 (should (= (seq-position seq 4) 1)))
335 (let ((seq '(a b c)))
336 (should (null (seq-position seq 'd #'eq)))
337 (should (= (seq-position seq 'a #'eq) 0))
338 (should (null (seq-position seq (make-symbol "a") #'eq)))))
341 ;;; seq-tests.el ends here