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91e7199f KR |
1 | ;;;; srfi-1.test --- Test suite for Guile's SRFI-1 functions. -*- scheme -*- |
2 | ;;;; | |
3 | ;;;; Copyright 2003 Free Software Foundation, Inc. | |
4 | ;;;; | |
5 | ;;;; This program is free software; you can redistribute it and/or modify | |
6 | ;;;; it under the terms of the GNU General Public License as published by | |
7 | ;;;; the Free Software Foundation; either version 2, or (at your option) | |
8 | ;;;; any later version. | |
9 | ;;;; | |
10 | ;;;; This program is distributed in the hope that it will be useful, | |
11 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | ;;;; GNU General Public License for more details. | |
14 | ;;;; | |
15 | ;;;; You should have received a copy of the GNU General Public License | |
16 | ;;;; along with this software; see the file COPYING. If not, write to | |
17 | ;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
18 | ;;;; Boston, MA 02111-1307 USA | |
19 | ||
20 | (use-modules (srfi srfi-1) | |
21 | (test-suite lib)) | |
22 | ||
72f1b979 KR |
23 | (define (ref-delete x lst . proc) |
24 | "Reference implemenation of srfi-1 `delete'." | |
25 | (set! proc (if (null? proc) equal? (car proc))) | |
26 | (do ((ret '()) | |
27 | (lst lst (cdr lst))) | |
28 | ((null? lst) | |
29 | (reverse! ret)) | |
30 | (if (not (proc x (car lst))) | |
31 | (set! ret (cons (car lst) ret))))) | |
32 | ||
33 | (define (ref-delete-duplicates lst . proc) | |
34 | "Reference implemenation of srfi-1 `delete-duplicates'." | |
35 | (set! proc (if (null? proc) equal? (car proc))) | |
36 | (if (null? lst) | |
37 | '() | |
38 | (do ((keep '())) | |
39 | ((null? lst) | |
40 | (reverse! keep)) | |
41 | (let ((elem (car lst))) | |
42 | (set! keep (cons elem keep)) | |
43 | (set! lst (ref-delete elem lst proc)))))) | |
44 | ||
91e7199f | 45 | |
c6e9db20 KR |
46 | ;; |
47 | ;; concatenate and concatenate! | |
48 | ;; | |
49 | ||
50 | (let () | |
51 | (define (common-tests concatenate-proc unmodified?) | |
52 | (define (try lstlst want) | |
53 | (let ((lstlst-copy (copy-tree lstlst)) | |
54 | (got (concatenate-proc lstlst))) | |
55 | (if unmodified? | |
56 | (if (not (equal? lstlst lstlst-copy)) | |
57 | (error "input lists modified"))) | |
58 | (equal? got want))) | |
59 | ||
60 | (pass-if-exception "too few args" exception:wrong-num-args | |
61 | (concatenate-proc)) | |
62 | ||
63 | (pass-if-exception "too many args" exception:wrong-num-args | |
64 | (concatenate-proc '() '())) | |
65 | ||
66 | (pass-if "no lists" | |
67 | (try '() '())) | |
68 | ||
69 | (pass-if (try '((1)) '(1))) | |
70 | (pass-if (try '((1 2)) '(1 2))) | |
71 | (pass-if (try '(() (1)) '(1))) | |
72 | (pass-if (try '(() () (1)) '(1))) | |
73 | ||
74 | (pass-if (try '((1) (2)) '(1 2))) | |
75 | (pass-if (try '(() (1 2)) '(1 2))) | |
76 | ||
77 | (pass-if (try '((1) 2) '(1 . 2))) | |
78 | (pass-if (try '((1) (2) 3) '(1 2 . 3))) | |
79 | (pass-if (try '((1) (2) (3 . 4)) '(1 2 3 . 4))) | |
80 | ) | |
81 | ||
82 | (with-test-prefix "concatenate" | |
83 | (common-tests concatenate #t)) | |
84 | ||
85 | (with-test-prefix "concatenate!" | |
86 | (common-tests concatenate! #f))) | |
87 | ||
f3903293 KR |
88 | ;; |
89 | ;; count | |
90 | ;; | |
91 | ||
92 | (with-test-prefix "count" | |
93 | (pass-if-exception "no args" exception:wrong-num-args | |
94 | (count)) | |
95 | ||
96 | (pass-if-exception "one arg" exception:wrong-num-args | |
97 | (count noop)) | |
98 | ||
99 | (with-test-prefix "one list" | |
100 | (define (or1 x) | |
101 | x) | |
102 | ||
103 | (pass-if "empty list" (= 0 (count or1 '()))) | |
104 | ||
105 | (pass-if-exception "pred arg count 0" exception:wrong-type-arg | |
106 | (count (lambda () x) '(1 2 3))) | |
107 | (pass-if-exception "pred arg count 2" exception:wrong-type-arg | |
108 | (count (lambda (x y) x) '(1 2 3))) | |
109 | ||
110 | (pass-if-exception "improper 1" exception:wrong-type-arg | |
111 | (count or1 1)) | |
112 | (pass-if-exception "improper 2" exception:wrong-type-arg | |
113 | (count or1 '(1 . 2))) | |
114 | (pass-if-exception "improper 3" exception:wrong-type-arg | |
115 | (count or1 '(1 2 . 3))) | |
116 | ||
117 | (pass-if (= 0 (count or1 '(#f)))) | |
118 | (pass-if (= 1 (count or1 '(#t)))) | |
119 | ||
120 | (pass-if (= 0 (count or1 '(#f #f)))) | |
121 | (pass-if (= 1 (count or1 '(#f #t)))) | |
122 | (pass-if (= 1 (count or1 '(#t #f)))) | |
123 | (pass-if (= 2 (count or1 '(#t #t)))) | |
124 | ||
125 | (pass-if (= 0 (count or1 '(#f #f #f)))) | |
126 | (pass-if (= 1 (count or1 '(#f #f #t)))) | |
127 | (pass-if (= 1 (count or1 '(#t #f #f)))) | |
128 | (pass-if (= 2 (count or1 '(#t #f #t)))) | |
129 | (pass-if (= 3 (count or1 '(#t #t #t))))) | |
130 | ||
131 | (with-test-prefix "two lists" | |
132 | (define (or2 x y) | |
133 | (or x y)) | |
134 | ||
135 | (pass-if "arg order" | |
136 | (= 1 (count (lambda (x y) | |
137 | (and (= 1 x) | |
138 | (= 2 y))) | |
139 | '(1) '(2)))) | |
140 | ||
141 | (pass-if "empty lists" (= 0 (count or2 '() '()))) | |
142 | ||
143 | (pass-if-exception "pred arg count 0" exception:wrong-type-arg | |
144 | (count (lambda () #t) '(1 2 3) '(1 2 3))) | |
145 | (pass-if-exception "pred arg count 1" exception:wrong-type-arg | |
146 | (count (lambda (x) x) '(1 2 3) '(1 2 3))) | |
147 | (pass-if-exception "pred arg count 3" exception:wrong-type-arg | |
148 | (count (lambda (x y z) x) '(1 2 3) '(1 2 3))) | |
149 | ||
150 | (pass-if-exception "improper first 1" exception:wrong-type-arg | |
151 | (count or2 1 '(1 2 3))) | |
152 | (pass-if-exception "improper first 2" exception:wrong-type-arg | |
153 | (count or2 '(1 . 2) '(1 2 3))) | |
154 | (pass-if-exception "improper first 3" exception:wrong-type-arg | |
155 | (count or2 '(1 2 . 3) '(1 2 3))) | |
156 | ||
157 | (pass-if-exception "improper second 1" exception:wrong-type-arg | |
158 | (count or2 '(1 2 3) 1)) | |
159 | (pass-if-exception "improper second 2" exception:wrong-type-arg | |
160 | (count or2 '(1 2 3) '(1 . 2))) | |
161 | (pass-if-exception "improper second 3" exception:wrong-type-arg | |
162 | (count or2 '(1 2 3) '(1 2 . 3))) | |
163 | ||
164 | (pass-if (= 0 (count or2 '(#f) '(#f)))) | |
165 | (pass-if (= 1 (count or2 '(#t) '(#f)))) | |
166 | (pass-if (= 1 (count or2 '(#f) '(#t)))) | |
167 | ||
168 | (pass-if (= 0 (count or2 '(#f #f) '(#f #f)))) | |
169 | (pass-if (= 1 (count or2 '(#t #f) '(#t #f)))) | |
170 | (pass-if (= 2 (count or2 '(#t #t) '(#f #f)))) | |
171 | (pass-if (= 2 (count or2 '(#t #f) '(#f #t)))) | |
172 | ||
173 | (with-test-prefix "stop shortest" | |
174 | (pass-if (= 2 (count or2 '(#t #f #t) '(#f #t)))) | |
175 | (pass-if (= 2 (count or2 '(#t #f #t #t) '(#f #t)))) | |
176 | (pass-if (= 2 (count or2 '(#t #f) '(#f #t #t)))) | |
177 | (pass-if (= 2 (count or2 '(#t #f) '(#f #t #t #t)))))) | |
178 | ||
179 | (with-test-prefix "three lists" | |
180 | (define (or3 x y z) | |
181 | (or x y z)) | |
182 | ||
183 | (pass-if "arg order" | |
184 | (= 1 (count (lambda (x y z) | |
185 | (and (= 1 x) | |
186 | (= 2 y) | |
187 | (= 3 z))) | |
188 | '(1) '(2) '(3)))) | |
189 | ||
190 | (pass-if "empty lists" (= 0 (count or3 '() '() '()))) | |
191 | ||
192 | ;; currently bad pred argument gives wrong-num-args when 3 or more | |
193 | ;; lists, as opposed to wrong-type-arg for 1 or 2 lists | |
194 | (pass-if-exception "pred arg count 0" exception:wrong-num-args | |
195 | (count (lambda () #t) '(1 2 3) '(1 2 3) '(1 2 3))) | |
196 | (pass-if-exception "pred arg count 2" exception:wrong-num-args | |
197 | (count (lambda (x y) x) '(1 2 3) '(1 2 3)'(1 2 3) )) | |
198 | (pass-if-exception "pred arg count 4" exception:wrong-num-args | |
199 | (count (lambda (w x y z) x) '(1 2 3) '(1 2 3) '(1 2 3))) | |
200 | ||
201 | (pass-if-exception "improper first 1" exception:wrong-type-arg | |
202 | (count or3 1 '(1 2 3) '(1 2 3))) | |
203 | (pass-if-exception "improper first 2" exception:wrong-type-arg | |
204 | (count or3 '(1 . 2) '(1 2 3) '(1 2 3))) | |
205 | (pass-if-exception "improper first 3" exception:wrong-type-arg | |
206 | (count or3 '(1 2 . 3) '(1 2 3) '(1 2 3))) | |
207 | ||
208 | (pass-if-exception "improper second 1" exception:wrong-type-arg | |
209 | (count or3 '(1 2 3) 1 '(1 2 3))) | |
210 | (pass-if-exception "improper second 2" exception:wrong-type-arg | |
211 | (count or3 '(1 2 3) '(1 . 2) '(1 2 3))) | |
212 | (pass-if-exception "improper second 3" exception:wrong-type-arg | |
213 | (count or3 '(1 2 3) '(1 2 . 3) '(1 2 3))) | |
214 | ||
215 | (pass-if-exception "improper third 1" exception:wrong-type-arg | |
216 | (count or3 '(1 2 3) '(1 2 3) 1)) | |
217 | (pass-if-exception "improper third 2" exception:wrong-type-arg | |
218 | (count or3 '(1 2 3) '(1 2 3) '(1 . 2))) | |
219 | (pass-if-exception "improper third 3" exception:wrong-type-arg | |
220 | (count or3 '(1 2 3) '(1 2 3) '(1 2 . 3))) | |
221 | ||
222 | (pass-if (= 0 (count or3 '(#f) '(#f) '(#f)))) | |
223 | (pass-if (= 1 (count or3 '(#t) '(#f) '(#f)))) | |
224 | (pass-if (= 1 (count or3 '(#f) '(#t) '(#f)))) | |
225 | (pass-if (= 1 (count or3 '(#f) '(#f) '(#t)))) | |
226 | ||
227 | (pass-if (= 0 (count or3 '(#f #f) '(#f #f) '(#f #f)))) | |
228 | ||
229 | (pass-if (= 1 (count or3 '(#t #f) '(#f #f) '(#f #f)))) | |
230 | (pass-if (= 1 (count or3 '(#f #t) '(#f #f) '(#f #f)))) | |
231 | (pass-if (= 1 (count or3 '(#f #f) '(#t #f) '(#f #f)))) | |
232 | (pass-if (= 1 (count or3 '(#f #f) '(#f #t) '(#f #f)))) | |
233 | (pass-if (= 1 (count or3 '(#f #f) '(#f #f) '(#t #f)))) | |
234 | (pass-if (= 1 (count or3 '(#f #f) '(#f #f) '(#f #t)))) | |
235 | ||
236 | (pass-if (= 2 (count or3 '(#t #t) '(#f #f) '(#f #f)))) | |
237 | (pass-if (= 2 (count or3 '(#f #f) '(#t #t) '(#f #f)))) | |
238 | (pass-if (= 2 (count or3 '(#f #f) '(#f #f) '(#t #t)))) | |
239 | (pass-if (= 2 (count or3 '(#f #f) '(#t #f) '(#f #t)))) | |
240 | ||
241 | (with-test-prefix "stop shortest" | |
242 | (pass-if (= 0 (count or3 '() '(#t #t #t) '(#t #t)))) | |
243 | (pass-if (= 0 (count or3 '(#t #t #t) '() '(#t #t)))) | |
244 | (pass-if (= 0 (count or3 '(#t #t #t) '(#t #t) '()))) | |
245 | ||
246 | (pass-if (= 1 (count or3 '(#t) '(#t #t #t) '(#t #t)))) | |
247 | (pass-if (= 1 (count or3 '(#t #t #t) '(#t) '(#t #t)))) | |
248 | (pass-if (= 1 (count or3 '(#t #t #t) '(#t #t) '(#t))))))) | |
c6e9db20 | 249 | |
8ec84fe5 KR |
250 | ;; |
251 | ;; delete and delete! | |
252 | ;; | |
253 | ||
254 | (let () | |
72f1b979 KR |
255 | ;; Call (PROC lst) for all lists of length up to 6, with all combinations |
256 | ;; of elements to be retained or deleted. Elements to retain are numbers, | |
257 | ;; 0 upwards. Elements to be deleted are #f. | |
258 | (define (test-lists proc) | |
259 | (do ((n 0 (1+ n))) | |
260 | ((>= n 6)) | |
261 | (do ((limit (ash 1 n)) | |
262 | (i 0 (1+ i))) | |
263 | ((>= i limit)) | |
264 | (let ((lst '())) | |
265 | (do ((bit 0 (1+ bit))) | |
266 | ((>= bit n)) | |
267 | (set! lst (cons (if (logbit? bit i) bit #f) lst))) | |
268 | (proc lst))))) | |
269 | ||
8ec84fe5 | 270 | (define (common-tests delete-proc) |
72f1b979 KR |
271 | (pass-if-exception "too few args" exception:wrong-num-args |
272 | (delete-proc 0)) | |
273 | ||
274 | (pass-if-exception "too many args" exception:wrong-num-args | |
275 | (delete-proc 0 '() equal? 99)) | |
276 | ||
277 | (pass-if "empty" | |
278 | (eq? '() (delete-proc 0 '()))) | |
279 | ||
280 | (pass-if "equal? (the default)" | |
281 | (equal? '((1) (3)) | |
282 | (delete-proc '(2) '((1) (2) (3))))) | |
283 | ||
284 | (pass-if "eq?" | |
285 | (equal? '((1) (2) (3)) | |
286 | (delete-proc '(2) '((1) (2) (3)) eq?))) | |
287 | ||
8ec84fe5 KR |
288 | (pass-if "called arg order" |
289 | (equal? '(1 2 3) | |
290 | (delete-proc 3 '(1 2 3 4 5) <)))) | |
291 | ||
292 | (with-test-prefix "delete" | |
72f1b979 | 293 | (common-tests delete) |
8ec84fe5 | 294 | |
72f1b979 KR |
295 | (test-lists |
296 | (lambda (lst) | |
297 | (let ((lst-copy (list-copy lst))) | |
298 | (with-test-prefix lst-copy | |
299 | (pass-if "result" | |
300 | (equal? (delete #f lst) | |
301 | (ref-delete #f lst))) | |
302 | (pass-if "non-destructive" | |
303 | (equal? lst-copy lst))))))) | |
304 | ||
8ec84fe5 | 305 | (with-test-prefix "delete!" |
72f1b979 KR |
306 | (common-tests delete!) |
307 | ||
308 | (test-lists | |
309 | (lambda (lst) | |
310 | (pass-if lst | |
311 | (equal? (delete! #f lst) | |
312 | (ref-delete #f lst))))))) | |
313 | ||
314 | ;; | |
315 | ;; delete-duplicates and delete-duplicates! | |
316 | ;; | |
317 | ||
318 | (let () | |
319 | ;; Call (PROC lst) for all lists of length 1 <= n <= 4, with all | |
320 | ;; combinations of numbers 1 to n in the elements | |
321 | (define (test-lists proc) | |
322 | (do ((n 1 (1+ n))) | |
323 | ((> n 4)) | |
324 | (do ((limit (integer-expt n n)) | |
325 | (i 0 (1+ i))) | |
326 | ((>= i limit)) | |
327 | (let ((lst '())) | |
328 | (do ((j 0 (1+ j)) | |
329 | (rem i (quotient rem n))) | |
330 | ((>= j n)) | |
331 | (set! lst (cons (remainder rem n) lst))) | |
332 | (proc lst))))) | |
333 | ||
334 | (define (common-tests delete-duplicates-proc) | |
335 | (pass-if-exception "too few args" exception:wrong-num-args | |
336 | (delete-duplicates-proc)) | |
337 | ||
338 | (pass-if-exception "too many args" exception:wrong-num-args | |
339 | (delete-duplicates-proc '() equal? 99)) | |
340 | ||
341 | (pass-if "empty" | |
342 | (eq? '() (delete-duplicates-proc '()))) | |
343 | ||
344 | (pass-if "equal? (the default)" | |
345 | (equal? '((2)) | |
346 | (delete-duplicates-proc '((2) (2) (2))))) | |
347 | ||
348 | (pass-if "eq?" | |
349 | (equal? '((2) (2) (2)) | |
350 | (delete-duplicates-proc '((2) (2) (2)) eq?))) | |
351 | ||
352 | (pass-if "called arg order" | |
353 | (let ((ok #t)) | |
354 | (delete-duplicates-proc '(1 2 3 4 5) | |
355 | (lambda (x y) | |
356 | (if (> x y) | |
357 | (set! ok #f)) | |
358 | #f)) | |
359 | ok))) | |
360 | ||
361 | (with-test-prefix "delete-duplicates" | |
362 | (common-tests delete-duplicates) | |
363 | ||
364 | (test-lists | |
365 | (lambda (lst) | |
366 | (let ((lst-copy (list-copy lst))) | |
367 | (with-test-prefix lst-copy | |
368 | (pass-if "result" | |
369 | (equal? (delete-duplicates lst) | |
370 | (ref-delete-duplicates lst))) | |
371 | (pass-if "non-destructive" | |
372 | (equal? lst-copy lst))))))) | |
373 | ||
374 | (with-test-prefix "delete-duplicates!" | |
375 | (common-tests delete-duplicates!) | |
376 | ||
377 | (test-lists | |
378 | (lambda (lst) | |
379 | (pass-if lst | |
380 | (equal? (delete-duplicates! lst) | |
381 | (ref-delete-duplicates lst))))))) | |
8ec84fe5 | 382 | |
91e7199f KR |
383 | ;; |
384 | ;; drop | |
385 | ;; | |
386 | ||
387 | (with-test-prefix "drop" | |
388 | ||
389 | (pass-if "'() 0" | |
390 | (null? (drop '() 0))) | |
391 | ||
392 | (pass-if "'(a) 0" | |
393 | (let ((lst '(a))) | |
394 | (eq? lst | |
395 | (drop lst 0)))) | |
396 | ||
397 | (pass-if "'(a b) 0" | |
398 | (let ((lst '(a b))) | |
399 | (eq? lst | |
400 | (drop lst 0)))) | |
401 | ||
402 | (pass-if "'(a) 1" | |
403 | (let ((lst '(a))) | |
404 | (eq? (cdr lst) | |
405 | (drop lst 1)))) | |
406 | ||
407 | (pass-if "'(a b) 1" | |
408 | (let ((lst '(a b))) | |
409 | (eq? (cdr lst) | |
410 | (drop lst 1)))) | |
411 | ||
412 | (pass-if "'(a b) 2" | |
413 | (let ((lst '(a b))) | |
414 | (eq? (cddr lst) | |
415 | (drop lst 2)))) | |
416 | ||
417 | (pass-if "'(a b c) 1" | |
418 | (let ((lst '(a b c))) | |
419 | (eq? (cddr lst) | |
420 | (drop lst 2)))) | |
421 | ||
422 | (pass-if "circular '(a) 0" | |
423 | (let ((lst (circular-list 'a))) | |
424 | (eq? lst | |
425 | (drop lst 0)))) | |
426 | ||
427 | (pass-if "circular '(a) 1" | |
428 | (let ((lst (circular-list 'a))) | |
429 | (eq? lst | |
430 | (drop lst 1)))) | |
431 | ||
432 | (pass-if "circular '(a) 2" | |
433 | (let ((lst (circular-list 'a))) | |
434 | (eq? lst | |
435 | (drop lst 1)))) | |
436 | ||
437 | (pass-if "circular '(a b) 1" | |
438 | (let ((lst (circular-list 'a))) | |
439 | (eq? (cdr lst) | |
440 | (drop lst 0)))) | |
441 | ||
442 | (pass-if "circular '(a b) 2" | |
443 | (let ((lst (circular-list 'a))) | |
444 | (eq? lst | |
445 | (drop lst 1)))) | |
446 | ||
447 | (pass-if "circular '(a b) 5" | |
448 | (let ((lst (circular-list 'a))) | |
449 | (eq? (cdr lst) | |
450 | (drop lst 5)))) | |
451 | ||
452 | (pass-if "'(a . b) 1" | |
453 | (eq? 'b | |
454 | (drop '(a . b) 1))) | |
455 | ||
456 | (pass-if "'(a b . c) 1" | |
457 | (equal? 'c | |
458 | (drop '(a b . c) 2)))) | |
459 | ||
15d36a34 KR |
460 | ;; |
461 | ;; length+ | |
462 | ;; | |
463 | ||
464 | (with-test-prefix "length+" | |
465 | (pass-if-exception "too few args" exception:wrong-num-args | |
466 | (length+)) | |
467 | (pass-if-exception "too many args" exception:wrong-num-args | |
468 | (length+ 123 456)) | |
469 | (pass-if (= 0 (length+ '()))) | |
470 | (pass-if (= 1 (length+ '(x)))) | |
471 | (pass-if (= 2 (length+ '(x y)))) | |
472 | (pass-if (= 3 (length+ '(x y z)))) | |
473 | (pass-if (not (length+ (circular-list 1)))) | |
474 | (pass-if (not (length+ (circular-list 1 2)))) | |
475 | (pass-if (not (length+ (circular-list 1 2 3))))) | |
476 | ||
b052db69 KR |
477 | ;; |
478 | ;; list-copy | |
479 | ;; | |
480 | ||
481 | (with-test-prefix "list-copy" | |
b052db69 KR |
482 | (pass-if (equal? '() (list-copy '()))) |
483 | (pass-if (equal? '(1 2) (list-copy '(1 2)))) | |
484 | (pass-if (equal? '(1 2 3) (list-copy '(1 2 3)))) | |
485 | (pass-if (equal? '(1 2 3 4) (list-copy '(1 2 3 4)))) | |
486 | (pass-if (equal? '(1 2 3 4 5) (list-copy '(1 2 3 4 5)))) | |
487 | ||
488 | ;; improper lists can be copied | |
489 | (pass-if (equal? 1 (list-copy 1))) | |
490 | (pass-if (equal? '(1 . 2) (list-copy '(1 . 2)))) | |
491 | (pass-if (equal? '(1 2 . 3) (list-copy '(1 2 . 3)))) | |
492 | (pass-if (equal? '(1 2 3 . 4) (list-copy '(1 2 3 . 4)))) | |
493 | (pass-if (equal? '(1 2 3 4 . 5) (list-copy '(1 2 3 4 . 5))))) | |
494 | ||
91e7199f KR |
495 | ;; |
496 | ;; take | |
497 | ;; | |
498 | ||
499 | (with-test-prefix "take" | |
500 | ||
501 | (pass-if "'() 0" | |
502 | (null? (take '() 0))) | |
503 | ||
504 | (pass-if "'(a) 0" | |
505 | (null? (take '(a) 0))) | |
506 | ||
507 | (pass-if "'(a b) 0" | |
508 | (null? (take '() 0))) | |
509 | ||
510 | (pass-if "'(a b c) 0" | |
511 | (null? (take '() 0))) | |
512 | ||
513 | (pass-if "'(a) 1" | |
514 | (let* ((lst '(a)) | |
515 | (got (take lst 1))) | |
516 | (and (equal? '(a) got) | |
517 | (not (eq? lst got))))) | |
518 | ||
519 | (pass-if "'(a b) 1" | |
520 | (equal? '(a) | |
521 | (take '(a b) 1))) | |
522 | ||
523 | (pass-if "'(a b c) 1" | |
524 | (equal? '(a) | |
525 | (take '(a b c) 1))) | |
526 | ||
527 | (pass-if "'(a b) 2" | |
528 | (let* ((lst '(a b)) | |
529 | (got (take lst 2))) | |
530 | (and (equal? '(a b) got) | |
531 | (not (eq? lst got))))) | |
532 | ||
533 | (pass-if "'(a b c) 2" | |
534 | (equal? '(a b) | |
535 | (take '(a b c) 2))) | |
536 | ||
537 | (pass-if "circular '(a) 0" | |
538 | (equal? '() | |
539 | (take (circular-list 'a) 0))) | |
540 | ||
541 | (pass-if "circular '(a) 1" | |
542 | (equal? '(a) | |
543 | (take (circular-list 'a) 1))) | |
544 | ||
545 | (pass-if "circular '(a) 2" | |
546 | (equal? '(a a) | |
547 | (take (circular-list 'a) 2))) | |
548 | ||
549 | (pass-if "circular '(a b) 5" | |
550 | (equal? '(a b a b a) | |
551 | (take (circular-list 'a 'b) 5))) | |
552 | ||
553 | (pass-if "'(a . b) 1" | |
554 | (equal? '(a) | |
555 | (take '(a . b) 1))) | |
556 | ||
557 | (pass-if "'(a b . c) 1" | |
558 | (equal? '(a) | |
559 | (take '(a b . c) 1))) | |
560 | ||
561 | (pass-if "'(a b . c) 2" | |
562 | (equal? '(a b) | |
563 | (take '(a b . c) 2)))) | |
9a029e41 KR |
564 | |
565 | ;; | |
566 | ;; partition | |
567 | ;; | |
568 | ||
569 | (define (test-partition pred list kept-good dropped-good) | |
570 | (call-with-values (lambda () | |
571 | (partition pred list)) | |
572 | (lambda (kept dropped) | |
573 | (and (equal? kept kept-good) | |
574 | (equal? dropped dropped-good))))) | |
575 | ||
576 | (with-test-prefix "partition" | |
577 | ||
578 | (pass-if "with dropped tail" | |
579 | (test-partition even? '(1 2 3 4 5 6 7) | |
580 | '(2 4 6) '(1 3 5 7))) | |
581 | ||
582 | (pass-if "with kept tail" | |
583 | (test-partition even? '(1 2 3 4 5 6) | |
584 | '(2 4 6) '(1 3 5))) | |
585 | ||
586 | (pass-if "with everything dropped" | |
587 | (test-partition even? '(1 3 5 7) | |
588 | '() '(1 3 5 7))) | |
589 | ||
590 | (pass-if "with everything kept" | |
591 | (test-partition even? '(2 4 6) | |
592 | '(2 4 6) '())) | |
593 | ||
594 | (pass-if "with empty list" | |
595 | (test-partition even? '() | |
596 | '() '())) | |
597 | ||
598 | (pass-if "with reasonably long list" | |
599 | ;; the old implementation from SRFI-1 reference implementation | |
600 | ;; would signal a stack-overflow for a list of only 500 elements! | |
601 | (call-with-values (lambda () | |
602 | (partition even? | |
603 | (make-list 10000 1))) | |
604 | (lambda (even odd) | |
605 | (and (= (length odd) 10000) | |
606 | (= (length even) 0)))))) | |
607 |