2 * This file is part of DisOrder.
3 * Copyright (C) 2005, 2007 Richard Kettlewell
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 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 /** @file lib/test.c @brief Library tests */
31 #include <sys/types.h>
44 #include "inputline.h"
50 static int tests, errors;
51 static int fail_first;
53 static void count_error() {
59 /** @brief Checks that @p expr is nonzero */
60 #define insist(expr) do { \
63 fprintf(stderr, "%s:%d: error checking %s\n", \
64 __FILE__, __LINE__, #expr); \
69 static const char *format(const char *s) {
75 while((c = (unsigned char)*s++)) {
76 if(c >= ' ' && c <= '~')
79 sprintf(buf, "\\x%02X", (unsigned)c);
80 dynstr_append_string(&d, buf);
87 static const char *format_utf32(const uint32_t *s) {
94 sprintf(buf, " %04lX", (long)c);
95 dynstr_append_string(&d, buf);
101 #define check_string(GOT, WANT) do { \
102 const char *g = GOT; \
103 const char *w = WANT; \
106 fprintf(stderr, "%s:%d: %s returned 0\n", \
107 __FILE__, __LINE__, #GOT); \
109 } else if(strcmp(w, g)) { \
110 fprintf(stderr, "%s:%d: %s returned:\n%s\nexpected:\n%s\n", \
111 __FILE__, __LINE__, #GOT, format(g), format(w)); \
117 static uint32_t *ucs4parse(const char *s) {
118 struct dynstr_ucs4 d;
121 dynstr_ucs4_init(&d);
124 dynstr_ucs4_append(&d, strtoul(s, &e, 0));
125 if(errno) fatal(errno, "strtoul (%s)", s);
128 dynstr_ucs4_terminate(&d);
132 static void test_utf8(void) {
133 /* Test validutf8, convert to UCS-4, check the answer is right,
134 * convert back to UTF-8, check we got to where we started */
135 #define U8(CHARS, WORDS) do { \
136 uint32_t *w = ucs4parse(WORDS); \
140 insist(validutf8(CHARS)); \
141 ucs = utf8_to_utf32(CHARS, strlen(CHARS), 0); \
143 insist(!utf32_cmp(w, ucs)); \
144 u8 = utf32_to_utf8(ucs, utf32_len(ucs), 0); \
146 insist(!strcmp(u8, CHARS)); \
149 fprintf(stderr, "test_utf8\n");
150 #define validutf8(S) utf8_valid((S), strlen(S))
156 /* ASCII characters */
158 U8(" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~",
159 "0x20 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x28 0x29 0x2a 0x2b 0x2c 0x2d "
160 "0x2e 0x2f 0x30 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38 0x39 0x3a "
161 "0x3b 0x3c 0x3d 0x3e 0x3f 0x40 0x41 0x42 0x43 0x44 0x45 0x46 0x47 "
162 "0x48 0x49 0x4a 0x4b 0x4c 0x4d 0x4e 0x4f 0x50 0x51 0x52 0x53 0x54 "
163 "0x55 0x56 0x57 0x58 0x59 0x5a 0x5b 0x5c 0x5d 0x5e 0x5f 0x60 0x61 "
164 "0x62 0x63 0x64 0x65 0x66 0x67 0x68 0x69 0x6a 0x6b 0x6c 0x6d 0x6e "
165 "0x6f 0x70 0x71 0x72 0x73 0x74 0x75 0x76 0x77 0x78 0x79 0x7a 0x7b "
167 U8("\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037\177",
168 "0x1 0x2 0x3 0x4 0x5 0x6 0x7 0x8 0x9 0xa 0xb 0xc 0xd 0xe 0xf 0x10 "
169 "0x11 0x12 0x13 0x14 0x15 0x16 0x17 0x18 0x19 0x1a 0x1b 0x1c 0x1d "
174 /* UTF8-2 = %xC2-DF UTF8-tail */
175 insist(!validutf8("\xC0\x80"));
176 insist(!validutf8("\xC1\x80"));
177 insist(!validutf8("\xC2\x7F"));
178 U8("\xC2\x80", "0x80");
179 U8("\xDF\xBF", "0x7FF");
180 insist(!validutf8("\xDF\xC0"));
182 /* UTF8-3 = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
183 * %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
185 insist(!validutf8("\xE0\x9F\x80"));
186 U8("\xE0\xA0\x80", "0x800");
187 U8("\xE0\xBF\xBF", "0xFFF");
188 insist(!validutf8("\xE0\xC0\xBF"));
190 insist(!validutf8("\xE1\x80\x7F"));
191 U8("\xE1\x80\x80", "0x1000");
192 U8("\xEC\xBF\xBF", "0xCFFF");
193 insist(!validutf8("\xEC\xC0\xBF"));
195 U8("\xED\x80\x80", "0xD000");
196 U8("\xED\x9F\xBF", "0xD7FF");
197 insist(!validutf8("\xED\xA0\xBF"));
199 insist(!validutf8("\xEE\x7f\x80"));
200 U8("\xEE\x80\x80", "0xE000");
201 U8("\xEF\xBF\xBF", "0xFFFF");
202 insist(!validutf8("\xEF\xC0\xBF"));
204 /* UTF8-4 = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
205 * %xF4 %x80-8F 2( UTF8-tail )
207 insist(!validutf8("\xF0\x8F\x80\x80"));
208 U8("\xF0\x90\x80\x80", "0x10000");
209 U8("\xF0\xBF\xBF\xBF", "0x3FFFF");
210 insist(!validutf8("\xF0\xC0\x80\x80"));
212 insist(!validutf8("\xF1\x80\x80\x7F"));
213 U8("\xF1\x80\x80\x80", "0x40000");
214 U8("\xF3\xBF\xBF\xBF", "0xFFFFF");
215 insist(!validutf8("\xF3\xC0\x80\x80"));
217 insist(!validutf8("\xF4\x80\x80\x7F"));
218 U8("\xF4\x80\x80\x80", "0x100000");
219 U8("\xF4\x8F\xBF\xBF", "0x10FFFF");
220 insist(!validutf8("\xF4\x90\x80\x80"));
221 insist(!validutf8("\xF4\x80\xFF\x80"));
223 /* miscellaneous non-UTF-8 rubbish */
224 insist(!validutf8("\x80"));
225 insist(!validutf8("\xBF"));
226 insist(!validutf8("\xC0"));
227 insist(!validutf8("\xC0\x7F"));
228 insist(!validutf8("\xC0\xC0"));
229 insist(!validutf8("\xE0"));
230 insist(!validutf8("\xE0\x7F"));
231 insist(!validutf8("\xE0\xC0"));
232 insist(!validutf8("\xE0\x80"));
233 insist(!validutf8("\xE0\x80\x7f"));
234 insist(!validutf8("\xE0\x80\xC0"));
235 insist(!validutf8("\xF0"));
236 insist(!validutf8("\xF0\x7F"));
237 insist(!validutf8("\xF0\xC0"));
238 insist(!validutf8("\xF0\x80"));
239 insist(!validutf8("\xF0\x80\x7f"));
240 insist(!validutf8("\xF0\x80\xC0"));
241 insist(!validutf8("\xF0\x80\x80\x7f"));
242 insist(!validutf8("\xF0\x80\x80\xC0"));
243 insist(!validutf8("\xF5\x80\x80\x80"));
244 insist(!validutf8("\xF8"));
247 static void test_mime(void) {
250 fprintf(stderr, "test_mime\n");
253 insist(!mime_content_type("text/plain", &t, &n, &v));
254 insist(!strcmp(t, "text/plain"));
259 insist(!mime_content_type("TEXT ((nested) comment) /plain", &t, &n, &v));
260 insist(!strcmp(t, "text/plain"));
265 insist(!mime_content_type(" text/plain ; Charset=utf-8", &t, &n, &v));
266 insist(!strcmp(t, "text/plain"));
267 insist(!strcmp(n, "charset"));
268 insist(!strcmp(v, "utf-8"));
271 insist(!mime_content_type("text/plain;charset = ISO-8859-1 ", &t, &n, &v));
272 insist(!strcmp(t, "text/plain"));
273 insist(!strcmp(n, "charset"));
274 insist(!strcmp(v, "ISO-8859-1"));
277 /* XXX mime_multipart */
278 /* XXX mime_rfc2388_content_disposition */
280 check_string(mime_qp(""), "");
281 check_string(mime_qp("foobar"), "foobar");
282 check_string(mime_qp("foo=20bar"), "foo bar");
283 check_string(mime_qp("x \r\ny"), "x\r\ny");
284 check_string(mime_qp("x=\r\ny"), "xy");
285 check_string(mime_qp("x= \r\ny"), "xy");
286 check_string(mime_qp("x =\r\ny"), "x y");
287 check_string(mime_qp("x = \r\ny"), "x y");
290 check_string(mime_qp("Now's the time =\r\n"
291 "for all folk to come=\r\n"
292 " to the aid of their country."),
293 "Now's the time for all folk to come to the aid of their country.");
295 check_string(mime_base64(""), "");
296 check_string(mime_base64("BBBB"), "\x04\x10\x41");
297 check_string(mime_base64("////"), "\xFF\xFF\xFF");
298 check_string(mime_base64("//BB"), "\xFF\xF0\x41");
299 check_string(mime_base64("BBBB//BB////"),
300 "\x04\x10\x41" "\xFF\xF0\x41" "\xFF\xFF\xFF");
301 check_string(mime_base64("B B B B / / B B / / / /"),
302 "\x04\x10\x41" "\xFF\xF0\x41" "\xFF\xFF\xFF");
303 check_string(mime_base64("B\r\nBBB.// B-B//~//"),
304 "\x04\x10\x41" "\xFF\xF0\x41" "\xFF\xFF\xFF");
305 check_string(mime_base64("BBBB="),
307 check_string(mime_base64("BBBBx="), /* not actually valid base64 */
309 check_string(mime_base64("BBBB BB=="),
310 "\x04\x10\x41" "\x04");
311 check_string(mime_base64("BBBB BBB="),
312 "\x04\x10\x41" "\x04\x10");
315 static void test_hex(void) {
317 static const unsigned char h[] = { 0x00, 0xFF, 0x80, 0x7F };
321 fprintf(stderr, "test_hex\n");
323 for(n = 0; n <= UCHAR_MAX; ++n) {
325 insist(unhexdigitq(n) == -1);
327 insist(unhexdigitq('0') == 0);
328 insist(unhexdigitq('1') == 1);
329 insist(unhexdigitq('2') == 2);
330 insist(unhexdigitq('3') == 3);
331 insist(unhexdigitq('4') == 4);
332 insist(unhexdigitq('5') == 5);
333 insist(unhexdigitq('6') == 6);
334 insist(unhexdigitq('7') == 7);
335 insist(unhexdigitq('8') == 8);
336 insist(unhexdigitq('9') == 9);
337 insist(unhexdigitq('a') == 10);
338 insist(unhexdigitq('b') == 11);
339 insist(unhexdigitq('c') == 12);
340 insist(unhexdigitq('d') == 13);
341 insist(unhexdigitq('e') == 14);
342 insist(unhexdigitq('f') == 15);
343 insist(unhexdigitq('A') == 10);
344 insist(unhexdigitq('B') == 11);
345 insist(unhexdigitq('C') == 12);
346 insist(unhexdigitq('D') == 13);
347 insist(unhexdigitq('E') == 14);
348 insist(unhexdigitq('F') == 15);
349 check_string(hex(h, sizeof h), "00ff807f");
350 check_string(hex(0, 0), "");
351 u = unhex("00ff807f", &ul);
353 insist(memcmp(u, h, 4) == 0);
354 u = unhex("00FF807F", &ul);
356 insist(memcmp(u, h, 4) == 0);
359 fprintf(stderr, "2 ERROR reports expected {\n");
360 insist(unhex("F", 0) == 0);
361 insist(unhex("az", 0) == 0);
362 fprintf(stderr, "}\n");
365 static void test_casefold(void) {
367 const char *input, *canon_folded, *compat_folded, *canon_expected, *compat_expected;
369 fprintf(stderr, "test_casefold\n");
371 /* This isn't a very exhaustive test. Unlike for normalization, there don't
372 * seem to be any public test vectors for these algorithms. */
374 for(c = 1; c < 256; ++c) {
375 input = utf32_to_utf8(&c, 1, 0);
376 canon_folded = utf8_casefold_canon(input, strlen(input), 0);
377 compat_folded = utf8_casefold_compat(input, strlen(input), 0);
380 if((c >= 'A' && c <= 'Z')
381 || (c >= 0xC0 && c <= 0xDE && c != 0xD7))
386 case 0xB5: /* MICRO SIGN */
387 l = 0x3BC; /* GREEK SMALL LETTER MU */
389 case 0xDF: /* LATIN SMALL LETTER SHARP S */
390 insist(!strcmp(canon_folded, "ss"));
391 insist(!strcmp(compat_folded, "ss"));
397 /* Case-folded data is now normalized */
398 d = utf32_decompose_canon(&l, 1, 0);
399 canon_expected = utf32_to_utf8(d, utf32_len(d), 0);
400 if(strcmp(canon_folded, canon_expected)) {
401 fprintf(stderr, "%s:%d: canon-casefolding %#lx got '%s', expected '%s'\n",
402 __FILE__, __LINE__, (unsigned long)c,
403 format(canon_folded), format(canon_expected));
407 d = utf32_decompose_compat(&l, 1, 0);
408 compat_expected = utf32_to_utf8(d, utf32_len(d), 0);
409 if(strcmp(compat_folded, compat_expected)) {
410 fprintf(stderr, "%s:%d: compat-casefolding %#lx got '%s', expected '%s'\n",
411 __FILE__, __LINE__, (unsigned long)c,
412 format(compat_folded), format(compat_expected));
418 check_string(utf8_casefold_canon("", 0, 0), "");
423 const char *expect[10];
427 /* Only whitespace and punctuation */
434 { "wibble", { "wibble", 0 } },
435 { " wibble", { "wibble", 0 } },
436 { " wibble ", { "wibble", 0 } },
437 { "wibble ", { "wibble", 0 } },
438 { "wibble spong", { "wibble", "spong", 0 } },
439 { " wibble spong", { "wibble", "spong", 0 } },
440 { " wibble spong ", { "wibble", "spong", 0 } },
441 { "wibble spong ", { "wibble", "spong", 0 } },
442 { "wibble spong splat foo zot ", { "wibble", "spong", "splat", "foo", "zot", 0 } },
444 { "wibble 'spong", { "wibble", "spong", 0 } },
445 { " wibble's", { "wibble's", 0 } },
446 { " wibblespong' ", { "wibblespong", 0 } },
447 { "wibble sp''ong ", { "wibble", "sp", "ong", 0 } },
449 #define NWTEST (sizeof wtest / sizeof *wtest)
451 static void test_words(void) {
452 size_t t, nexpect, ngot, i;
455 fprintf(stderr, "test_words\n");
456 for(t = 0; t < NWTEST; ++t) {
457 char **got = utf8_word_split(wtest[t].in, strlen(wtest[t].in), &ngot, 0);
459 for(nexpect = 0; wtest[t].expect[nexpect]; ++nexpect)
461 if(nexpect == ngot) {
462 for(i = 0; i < ngot; ++i)
463 if(strcmp(wtest[t].expect[i], got[i]))
469 fprintf(stderr, "word split %zu failed\n", t);
470 fprintf(stderr, "input: %s\n", wtest[t].in);
471 fprintf(stderr, " | %-30s | %-30s\n",
473 for(i = 0; i < nexpect || i < ngot; ++i) {
474 const char *e = i < nexpect ? wtest[t].expect[i] : "<none>";
475 const char *g = i < ngot ? got[i] : "<none>";
476 fprintf(stderr, " %2zu | %-30s | %-30s\n", i, e, g);
484 /** @brief Less-than comparison function for integer heap */
485 static inline int int_lt(int a, int b) { return a < b; }
488 * @brief A heap with @c int elements */
489 HEAP_TYPE(iheap, int, int_lt);
490 HEAP_DEFINE(iheap, int, int_lt);
492 /** @brief Tests for @ref heap.h */
493 static void test_heap(void) {
498 fprintf(stderr, "test_heap\n");
501 for(n = 0; n < 1000; ++n)
502 iheap_insert(h, random() % 100);
503 for(n = 0; n < 1000; ++n) {
504 const int latest = iheap_remove(h);
506 fprintf(stderr, "should have %d <= %d\n", last, latest);
507 insist(last <= latest);
513 /** @brief Open a Unicode test file */
514 static FILE *open_unicode_test(const char *path) {
520 if((base = strrchr(path, '/')))
524 if(!(fp = fopen(base, "r"))) {
525 snprintf(buffer, sizeof buffer,
526 "wget http://www.unicode.org/Public/5.0.0/ucd/%s", path);
527 if((w = system(buffer)))
528 fatal(0, "%s: %s", buffer, wstat(w));
529 if(chmod(base, 0444) < 0)
530 fatal(errno, "chmod %s", base);
531 if(!(fp = fopen(base, "r")))
532 fatal(errno, "%s", base);
537 /** @brief Run breaking tests for utf32_grapheme_boundary() etc */
538 static void breaktest(const char *path,
539 int (*breakfn)(const uint32_t *, size_t, size_t)) {
540 FILE *fp = open_unicode_test(path);
544 char break_allowed[1024];
545 uint32_t buffer[1024];
547 while(!inputline(path, fp, &l, '\n')) {
549 if(l[0] == '#') continue;
553 if(*lp == ' ' || *lp == '\t') {
559 if((unsigned char)*lp == 0xC3 && (unsigned char)lp[1] == 0xB7) {
560 /* 00F7 DIVISION SIGN */
561 break_allowed[bn] = 1;
565 if((unsigned char)*lp == 0xC3 && (unsigned char)lp[1] == 0x97) {
566 /* 00D7 MULTIPLICATION SIGN */
567 break_allowed[bn] = 0;
571 if(isxdigit((unsigned char)*lp)) {
572 buffer[bn++] = strtoul(lp, &lp, 16);
575 fatal(0, "%s:%d: evil line: %s", path, lineno, l);
577 for(n = 0; n <= bn; ++n) {
578 if(breakfn(buffer, bn, n) != break_allowed[n]) {
580 "%s:%d: offset %zu: mismatch\n"
593 /** @brief Tests for @ref lib/unicode.h */
594 static void test_unicode(void) {
598 uint32_t buffer[1024];
599 uint32_t *c[6], *NFD_c[6], *NFKD_c[6], *NFC_c[6], *NFKC_c[6]; /* 1-indexed */
602 fprintf(stderr, "test_unicode\n");
603 fp = open_unicode_test("NormalizationTest.txt");
604 while(!inputline("NormalizationTest.txt", fp, &l, '\n')) {
606 if(*l == '#' || *l == '@')
611 c[cn++] = &buffer[bn];
612 while(*lp && *lp != '#') {
621 c[cn++] = &buffer[bn];
625 buffer[bn++] = strtoul(lp, &lp, 16);
629 for(cn = 1; cn <= 5; ++cn) {
630 NFD_c[cn] = utf32_decompose_canon(c[cn], utf32_len(c[cn]), 0);
631 NFKD_c[cn] = utf32_decompose_compat(c[cn], utf32_len(c[cn]), 0);
632 NFC_c[cn] = utf32_compose_canon(c[cn], utf32_len(c[cn]), 0);
633 NFKC_c[cn] = utf32_compose_compat(c[cn], utf32_len(c[cn]), 0);
635 #define unt_check(T, A, B) do { \
637 if(utf32_cmp(c[A], T##_c[B])) { \
639 "NormalizationTest.txt:%d: c%d != "#T"(c%d)\n", \
641 fprintf(stderr, " c%d:%s\n", \
642 A, format_utf32(c[A])); \
643 fprintf(stderr, " c%d:%s\n", \
644 B, format_utf32(c[B])); \
645 fprintf(stderr, "%4s(c%d):%s\n", \
646 #T, B, format_utf32(T##_c[B])); \
650 unt_check(NFD, 3, 1);
651 unt_check(NFD, 3, 2);
652 unt_check(NFD, 3, 3);
653 unt_check(NFD, 5, 4);
654 unt_check(NFD, 5, 5);
655 unt_check(NFKD, 5, 1);
656 unt_check(NFKD, 5, 2);
657 unt_check(NFKD, 5, 3);
658 unt_check(NFKD, 5, 4);
659 unt_check(NFKD, 5, 5);
660 unt_check(NFC, 2, 1);
661 unt_check(NFC, 2, 2);
662 unt_check(NFC, 2, 3);
663 unt_check(NFC, 4, 4);
664 unt_check(NFC, 4, 5);
665 unt_check(NFKC, 4, 1);
666 unt_check(NFKC, 4, 2);
667 unt_check(NFKC, 4, 3);
668 unt_check(NFKC, 4, 4);
669 unt_check(NFKC, 4, 5);
670 for(cn = 1; cn <= 5; ++cn) {
677 breaktest("auxiliary/GraphemeBreakTest.txt", utf32_is_grapheme_boundary);
678 breaktest("auxiliary/WordBreakTest.txt", utf32_is_word_boundary);
679 insist(utf32_combining_class(0x40000) == 0);
680 insist(utf32_combining_class(0xE0000) == 0);
683 static void test_signame(void) {
684 fprintf(stderr, "test_signame\n");
685 insist(find_signal("SIGTERM") == SIGTERM);
686 insist(find_signal("SIGHUP") == SIGHUP);
687 insist(find_signal("SIGINT") == SIGINT);
688 insist(find_signal("SIGQUIT") == SIGQUIT);
689 insist(find_signal("SIGKILL") == SIGKILL);
690 insist(find_signal("SIGYOURMUM") == -1);
693 static void test_cache(void) {
694 const struct cache_type t1 = { 1 }, t2 = { 10 };
695 const char v11[] = "spong", v12[] = "wibble", v2[] = "blat";
696 fprintf(stderr, "test_cache\n");
697 cache_put(&t1, "1_1", v11);
698 cache_put(&t1, "1_2", v12);
699 cache_put(&t2, "2", v2);
700 insist(cache_count() == 3);
701 insist(cache_get(&t2, "2") == v2);
702 insist(cache_get(&t1, "1_1") == v11);
703 insist(cache_get(&t1, "1_2") == v12);
704 insist(cache_get(&t1, "2") == 0);
705 insist(cache_get(&t2, "1_1") == 0);
706 insist(cache_get(&t2, "1_2") == 0);
707 insist(cache_get(&t1, "2") == 0);
708 insist(cache_get(&t2, "1_1") == 0);
709 insist(cache_get(&t2, "1_2") == 0);
712 insist(cache_count() == 1);
713 insist(cache_get(&t1, "1_1") == 0);
714 insist(cache_get(&t1, "1_2") == 0);
715 insist(cache_get(&t2, "2") == v2);
717 insist(cache_count() == 0);
718 insist(cache_get(&t2, "2") == 0);
721 static void test_filepart(void) {
722 fprintf(stderr, "test_filepart\n");
723 check_string(d_dirname("/"), "/");
724 check_string(d_dirname("/spong"), "/");
725 check_string(d_dirname("/foo/bar"), "/foo");
726 check_string(d_dirname("./bar"), ".");
727 check_string(d_dirname("."), ".");
728 check_string(d_dirname(".."), ".");
729 check_string(d_dirname("../blat"), "..");
730 check_string(d_dirname("wibble"), ".");
731 check_string(extension("foo.c"), ".c");
732 check_string(extension(".c"), ".c");
733 check_string(extension("."), ".");
734 check_string(extension("foo"), "");
735 check_string(extension("./foo"), "");
736 check_string(extension("./foo.c"), ".c");
740 fail_first = !!getenv("FAIL_FIRST");
741 insist('\n' == 0x0A);
742 insist('\r' == 0x0D);
756 /* configuration.c */
793 fprintf(stderr, "%d errors out of %d tests\n", errors, tests);