src/test/test-string-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include "alloc-util.h"
   4 #include "locale-util.h"
   5 #include "macro.h"
   6 #include "string-util.h"
   7 #include "strv.h"
   8 #include "tests.h"
   9 #include "utf8.h"
  10 #include "util.h"
  11
  12 static void test_string_erase(void) {
  13         char *x;
  14
  15         x = strdupa("");
  16         assert_se(streq(string_erase(x), ""));
  17
  18         x = strdupa("1");
  19         assert_se(streq(string_erase(x), ""));
  20
  21         x = strdupa("123456789");
  22         assert_se(streq(string_erase(x), ""));
  23
  24         assert_se(x[1] == '\0');
  25         assert_se(x[2] == '\0');
  26         assert_se(x[3] == '\0');
  27         assert_se(x[4] == '\0');
  28         assert_se(x[5] == '\0');
  29         assert_se(x[6] == '\0');
  30         assert_se(x[7] == '\0');
  31         assert_se(x[8] == '\0');
  32         assert_se(x[9] == '\0');
  33 }
  34
  35 static void test_free_and_strndup_one(char **t, const char *src, size_t l, const char *expected, bool change) {
  36         int r;
  37
  38         log_debug("%s: \"%s\", \"%s\", %zd (expect \"%s\", %s)",
  39                   __func__, strnull(*t), strnull(src), l, strnull(expected), yes_no(change));
  40
  41         r = free_and_strndup(t, src, l);
  42         assert_se(streq_ptr(*t, expected));
  43         assert_se(r == change); /* check that change occurs only when necessary */
  44 }
  45
  46 static void test_free_and_strndup(void) {
  47         static const struct test_case {
  48                 const char *src;
  49                 size_t len;
  50                 const char *expected;
  51         } cases[] = {
  52                      {"abc", 0, ""},
  53                      {"abc", 0, ""},
  54                      {"abc", 1, "a"},
  55                      {"abc", 2, "ab"},
  56                      {"abc", 3, "abc"},
  57                      {"abc", 4, "abc"},
  58                      {"abc", 5, "abc"},
  59                      {"abc", 5, "abc"},
  60                      {"abc", 4, "abc"},
  61                      {"abc", 3, "abc"},
  62                      {"abc", 2, "ab"},
  63                      {"abc", 1, "a"},
  64                      {"abc", 0, ""},
  65
  66                      {"", 0, ""},
  67                      {"", 1, ""},
  68                      {"", 2, ""},
  69                      {"", 0, ""},
  70                      {"", 1, ""},
  71                      {"", 2, ""},
  72                      {"", 2, ""},
  73                      {"", 1, ""},
  74                      {"", 0, ""},
  75
  76                      {NULL, 0, NULL},
  77
  78                      {"foo", 3, "foo"},
  79                      {"foobar", 6, "foobar"},
  80         };
  81
  82         _cleanup_free_ char *t = NULL;
  83         const char *prev_expected = t;
  84
  85         for (unsigned i = 0; i < ELEMENTSOF(cases); i++) {
  86                 test_free_and_strndup_one(&t,
  87                                           cases[i].src, cases[i].len, cases[i].expected,
  88                                           !streq_ptr(cases[i].expected, prev_expected));
  89                 prev_expected = t;
  90         }
  91 }
  92
  93 static void test_ascii_strcasecmp_n(void) {
  94
  95         assert_se(ascii_strcasecmp_n("", "", 0) == 0);
  96         assert_se(ascii_strcasecmp_n("", "", 1) == 0);
  97         assert_se(ascii_strcasecmp_n("", "a", 1) < 0);
  98         assert_se(ascii_strcasecmp_n("", "a", 2) < 0);
  99         assert_se(ascii_strcasecmp_n("a", "", 1) > 0);
 100         assert_se(ascii_strcasecmp_n("a", "", 2) > 0);
 101         assert_se(ascii_strcasecmp_n("a", "a", 1) == 0);
 102         assert_se(ascii_strcasecmp_n("a", "a", 2) == 0);
 103         assert_se(ascii_strcasecmp_n("a", "b", 1) < 0);
 104         assert_se(ascii_strcasecmp_n("a", "b", 2) < 0);
 105         assert_se(ascii_strcasecmp_n("b", "a", 1) > 0);
 106         assert_se(ascii_strcasecmp_n("b", "a", 2) > 0);
 107         assert_se(ascii_strcasecmp_n("xxxxyxxxx", "xxxxYxxxx", 9) == 0);
 108         assert_se(ascii_strcasecmp_n("xxxxxxxxx", "xxxxyxxxx", 9) < 0);
 109         assert_se(ascii_strcasecmp_n("xxxxXxxxx", "xxxxyxxxx", 9) < 0);
 110         assert_se(ascii_strcasecmp_n("xxxxxxxxx", "xxxxYxxxx", 9) < 0);
 111         assert_se(ascii_strcasecmp_n("xxxxXxxxx", "xxxxYxxxx", 9) < 0);
 112
 113         assert_se(ascii_strcasecmp_n("xxxxYxxxx", "xxxxYxxxx", 9) == 0);
 114         assert_se(ascii_strcasecmp_n("xxxxyxxxx", "xxxxxxxxx", 9) > 0);
 115         assert_se(ascii_strcasecmp_n("xxxxyxxxx", "xxxxXxxxx", 9) > 0);
 116         assert_se(ascii_strcasecmp_n("xxxxYxxxx", "xxxxxxxxx", 9) > 0);
 117         assert_se(ascii_strcasecmp_n("xxxxYxxxx", "xxxxXxxxx", 9) > 0);
 118 }
 119
 120 static void test_ascii_strcasecmp_nn(void) {
 121         assert_se(ascii_strcasecmp_nn("", 0, "", 0) == 0);
 122         assert_se(ascii_strcasecmp_nn("", 0, "", 1) < 0);
 123         assert_se(ascii_strcasecmp_nn("", 1, "", 0) > 0);
 124         assert_se(ascii_strcasecmp_nn("", 1, "", 1) == 0);
 125
 126         assert_se(ascii_strcasecmp_nn("aaaa", 4, "aaAa", 4) == 0);
 127         assert_se(ascii_strcasecmp_nn("aaa", 3, "aaAa", 4) < 0);
 128         assert_se(ascii_strcasecmp_nn("aaa", 4, "aaAa", 4) < 0);
 129         assert_se(ascii_strcasecmp_nn("aaaa", 4, "aaA", 3) > 0);
 130         assert_se(ascii_strcasecmp_nn("aaaa", 4, "AAA", 4) > 0);
 131
 132         assert_se(ascii_strcasecmp_nn("aaaa", 4, "bbbb", 4) < 0);
 133         assert_se(ascii_strcasecmp_nn("aaAA", 4, "BBbb", 4) < 0);
 134         assert_se(ascii_strcasecmp_nn("BBbb", 4, "aaaa", 4) > 0);
 135 }
 136
 137 static void test_cellescape(void) {
 138         char buf[40];
 139
 140         assert_se(streq(cellescape(buf, 1, ""), ""));
 141         assert_se(streq(cellescape(buf, 1, "1"), ""));
 142         assert_se(streq(cellescape(buf, 1, "12"), ""));
 143
 144         assert_se(streq(cellescape(buf, 2, ""), ""));
 145         assert_se(streq(cellescape(buf, 2, "1"), "1"));
 146         assert_se(streq(cellescape(buf, 2, "12"), "."));
 147         assert_se(streq(cellescape(buf, 2, "123"), "."));
 148
 149         assert_se(streq(cellescape(buf, 3, ""), ""));
 150         assert_se(streq(cellescape(buf, 3, "1"), "1"));
 151         assert_se(streq(cellescape(buf, 3, "12"), "12"));
 152         assert_se(streq(cellescape(buf, 3, "123"), ".."));
 153         assert_se(streq(cellescape(buf, 3, "1234"), ".."));
 154
 155         assert_se(streq(cellescape(buf, 4, ""), ""));
 156         assert_se(streq(cellescape(buf, 4, "1"), "1"));
 157         assert_se(streq(cellescape(buf, 4, "12"), "12"));
 158         assert_se(streq(cellescape(buf, 4, "123"), "123"));
 159         assert_se(streq(cellescape(buf, 4, "1234"), is_locale_utf8() ? "…" : "..."));
 160         assert_se(streq(cellescape(buf, 4, "12345"), is_locale_utf8() ? "…" : "..."));
 161
 162         assert_se(streq(cellescape(buf, 5, ""), ""));
 163         assert_se(streq(cellescape(buf, 5, "1"), "1"));
 164         assert_se(streq(cellescape(buf, 5, "12"), "12"));
 165         assert_se(streq(cellescape(buf, 5, "123"), "123"));
 166         assert_se(streq(cellescape(buf, 5, "1234"), "1234"));
 167         assert_se(streq(cellescape(buf, 5, "12345"), is_locale_utf8() ? "1…" : "1..."));
 168         assert_se(streq(cellescape(buf, 5, "123456"), is_locale_utf8() ? "1…" : "1..."));
 169
 170         assert_se(streq(cellescape(buf, 1, "\020"), ""));
 171         assert_se(streq(cellescape(buf, 2, "\020"), "."));
 172         assert_se(streq(cellescape(buf, 3, "\020"), ".."));
 173         assert_se(streq(cellescape(buf, 4, "\020"), "…"));
 174         assert_se(streq(cellescape(buf, 5, "\020"), "\\020"));
 175
 176         assert_se(streq(cellescape(buf, 5, "1234\020"), "1…"));
 177         assert_se(streq(cellescape(buf, 6, "1234\020"), "12…"));
 178         assert_se(streq(cellescape(buf, 7, "1234\020"), "123…"));
 179         assert_se(streq(cellescape(buf, 8, "1234\020"), "1234…"));
 180         assert_se(streq(cellescape(buf, 9, "1234\020"), "1234\\020"));
 181
 182         assert_se(streq(cellescape(buf, 1, "\t\n"), ""));
 183         assert_se(streq(cellescape(buf, 2, "\t\n"), "."));
 184         assert_se(streq(cellescape(buf, 3, "\t\n"), ".."));
 185         assert_se(streq(cellescape(buf, 4, "\t\n"), "…"));
 186         assert_se(streq(cellescape(buf, 5, "\t\n"), "\\t\\n"));
 187
 188         assert_se(streq(cellescape(buf, 5, "1234\t\n"), "1…"));
 189         assert_se(streq(cellescape(buf, 6, "1234\t\n"), "12…"));
 190         assert_se(streq(cellescape(buf, 7, "1234\t\n"), "123…"));
 191         assert_se(streq(cellescape(buf, 8, "1234\t\n"), "1234…"));
 192         assert_se(streq(cellescape(buf, 9, "1234\t\n"), "1234\\t\\n"));
 193
 194         assert_se(streq(cellescape(buf, 4, "x\t\020\n"), "…"));
 195         assert_se(streq(cellescape(buf, 5, "x\t\020\n"), "x…"));
 196         assert_se(streq(cellescape(buf, 6, "x\t\020\n"), "x…"));
 197         assert_se(streq(cellescape(buf, 7, "x\t\020\n"), "x\\t…"));
 198         assert_se(streq(cellescape(buf, 8, "x\t\020\n"), "x\\t…"));
 199         assert_se(streq(cellescape(buf, 9, "x\t\020\n"), "x\\t…"));
 200         assert_se(streq(cellescape(buf, 10, "x\t\020\n"), "x\\t\\020\\n"));
 201
 202         assert_se(streq(cellescape(buf, 6, "1\011"), "1\\t"));
 203         assert_se(streq(cellescape(buf, 6, "1\020"), "1\\020"));
 204         assert_se(streq(cellescape(buf, 6, "1\020x"), is_locale_utf8() ? "1…" : "1..."));
 205
 206         assert_se(streq(cellescape(buf, 40, "1\020"), "1\\020"));
 207         assert_se(streq(cellescape(buf, 40, "1\020x"), "1\\020x"));
 208
 209         assert_se(streq(cellescape(buf, 40, "\a\b\f\n\r\t\v\\\"'"), "\\a\\b\\f\\n\\r\\t\\v\\\\\\\"\\'"));
 210         assert_se(streq(cellescape(buf, 6, "\a\b\f\n\r\t\v\\\"'"), is_locale_utf8() ? "\\a…" : "\\a..."));
 211         assert_se(streq(cellescape(buf, 7, "\a\b\f\n\r\t\v\\\"'"), is_locale_utf8() ? "\\a…" : "\\a..."));
 212         assert_se(streq(cellescape(buf, 8, "\a\b\f\n\r\t\v\\\"'"), is_locale_utf8() ? "\\a\\b…" : "\\a\\b..."));
 213
 214         assert_se(streq(cellescape(buf, sizeof buf, "1\020"), "1\\020"));
 215         assert_se(streq(cellescape(buf, sizeof buf, "1\020x"), "1\\020x"));
 216 }
 217
 218 static void test_streq_ptr(void) {
 219         assert_se(streq_ptr(NULL, NULL));
 220         assert_se(!streq_ptr("abc", "cdef"));
 221 }
 222
 223 static void test_strstrip(void) {
 224         char *r;
 225         char input[] = "   hello, waldo.   ";
 226
 227         r = strstrip(input);
 228         assert_se(streq(r, "hello, waldo."));
 229 }
 230
 231 static void test_strextend(void) {
 232         _cleanup_free_ char *str = NULL;
 233
 234         assert_se(strextend(&str, NULL));
 235         assert_se(streq_ptr(str, ""));
 236         assert_se(strextend(&str, "", "0", "", "", "123", NULL));
 237         assert_se(streq_ptr(str, "0123"));
 238         assert_se(strextend(&str, "456", "78", "9", NULL));
 239         assert_se(streq_ptr(str, "0123456789"));
 240 }
 241
 242 static void test_strextend_with_separator(void) {
 243         _cleanup_free_ char *str = NULL;
 244
 245         assert_se(strextend_with_separator(&str, NULL, NULL));
 246         assert_se(streq_ptr(str, ""));
 247         str = mfree(str);
 248
 249         assert_se(strextend_with_separator(&str, "...", NULL));
 250         assert_se(streq_ptr(str, ""));
 251         assert_se(strextend_with_separator(&str, "...", NULL));
 252         assert_se(streq_ptr(str, ""));
 253         str = mfree(str);
 254
 255         assert_se(strextend_with_separator(&str, "xyz", "a", "bb", "ccc", NULL));
 256         assert_se(streq_ptr(str, "axyzbbxyzccc"));
 257         str = mfree(str);
 258
 259         assert_se(strextend_with_separator(&str, ",", "start", "", "1", "234", NULL));
 260         assert_se(streq_ptr(str, "start,,1,234"));
 261         assert_se(strextend_with_separator(&str, ";", "more", "5", "678", NULL));
 262         assert_se(streq_ptr(str, "start,,1,234;more;5;678"));
 263 }
 264
 265 static void test_strrep(void) {
 266         _cleanup_free_ char *one, *three, *zero;
 267         one = strrep("waldo", 1);
 268         three = strrep("waldo", 3);
 269         zero = strrep("waldo", 0);
 270
 271         assert_se(streq(one, "waldo"));
 272         assert_se(streq(three, "waldowaldowaldo"));
 273         assert_se(streq(zero, ""));
 274 }
 275
 276 static void test_strappend(void) {
 277         _cleanup_free_ char *t1, *t2, *t3, *t4;
 278
 279         t1 = strappend(NULL, NULL);
 280         assert_se(streq(t1, ""));
 281
 282         t2 = strappend(NULL, "suf");
 283         assert_se(streq(t2, "suf"));
 284
 285         t3 = strappend("pre", NULL);
 286         assert_se(streq(t3, "pre"));
 287
 288         t4 = strappend("pre", "suf");
 289         assert_se(streq(t4, "presuf"));
 290 }
 291
 292 static void test_string_has_cc(void) {
 293         assert_se(string_has_cc("abc\1", NULL));
 294         assert_se(string_has_cc("abc\x7f", NULL));
 295         assert_se(string_has_cc("abc\x7f", NULL));
 296         assert_se(string_has_cc("abc\t\x7f", "\t"));
 297         assert_se(string_has_cc("abc\t\x7f", "\t"));
 298         assert_se(string_has_cc("\x7f", "\t"));
 299         assert_se(string_has_cc("\x7f", "\t\a"));
 300
 301         assert_se(!string_has_cc("abc\t\t", "\t"));
 302         assert_se(!string_has_cc("abc\t\t\a", "\t\a"));
 303         assert_se(!string_has_cc("a\ab\tc", "\t\a"));
 304 }
 305
 306 static void test_ascii_strlower(void) {
 307         char a[] = "AabBcC Jk Ii Od LKJJJ kkd LK";
 308         assert_se(streq(ascii_strlower(a), "aabbcc jk ii od lkjjj kkd lk"));
 309 }
 310
 311 static void test_strshorten(void) {
 312         char s[] = "foobar";
 313
 314         assert_se(strlen(strshorten(s, 6)) == 6);
 315         assert_se(strlen(strshorten(s, 12)) == 6);
 316         assert_se(strlen(strshorten(s, 2)) == 2);
 317         assert_se(strlen(strshorten(s, 0)) == 0);
 318 }
 319
 320 static void test_strjoina(void) {
 321         char *actual;
 322
 323         actual = strjoina("", "foo", "bar");
 324         assert_se(streq(actual, "foobar"));
 325
 326         actual = strjoina("foo", "bar", "baz");
 327         assert_se(streq(actual, "foobarbaz"));
 328
 329         actual = strjoina("foo", "", "bar", "baz");
 330         assert_se(streq(actual, "foobarbaz"));
 331
 332         actual = strjoina("foo");
 333         assert_se(streq(actual, "foo"));
 334
 335         actual = strjoina(NULL);
 336         assert_se(streq(actual, ""));
 337
 338         actual = strjoina(NULL, "foo");
 339         assert_se(streq(actual, ""));
 340
 341         actual = strjoina("foo", NULL, "bar");
 342         assert_se(streq(actual, "foo"));
 343 }
 344
 345 static void test_strcmp_ptr(void) {
 346         assert_se(strcmp_ptr(NULL, NULL) == 0);
 347         assert_se(strcmp_ptr("", NULL) > 0);
 348         assert_se(strcmp_ptr("foo", NULL) > 0);
 349         assert_se(strcmp_ptr(NULL, "") < 0);
 350         assert_se(strcmp_ptr(NULL, "bar") < 0);
 351         assert_se(strcmp_ptr("foo", "bar") > 0);
 352         assert_se(strcmp_ptr("bar", "baz") < 0);
 353         assert_se(strcmp_ptr("foo", "foo") == 0);
 354         assert_se(strcmp_ptr("", "") == 0);
 355 }
 356
 357 static void test_foreach_word(void) {
 358         const char *word, *state;
 359         size_t l;
 360         int i = 0;
 361         const char test[] = "test abc d\te   f   ";
 362         const char * const expected[] = {
 363                 "test",
 364                 "abc",
 365                 "d",
 366                 "e",
 367                 "f",
 368                 "",
 369                 NULL
 370         };
 371
 372         FOREACH_WORD(word, l, test, state)
 373                 assert_se(strneq(expected[i++], word, l));
 374 }
 375
 376 static void check(const char *test, char** expected, bool trailing) {
 377         int i = 0, r;
 378
 379         printf("<<<%s>>>\n", test);
 380         for (;;) {
 381                 _cleanup_free_ char *word = NULL;
 382
 383                 r = extract_first_word(&test, &word, NULL, EXTRACT_QUOTES);
 384                 if (r == 0) {
 385                         assert_se(!trailing);
 386                         break;
 387                 } else if (r < 0) {
 388                         assert_se(trailing);
 389                         break;
 390                 }
 391
 392                 assert_se(streq(word, expected[i++]));
 393                 printf("<%s>\n", word);
 394         }
 395         assert_se(expected[i] == NULL);
 396 }
 397
 398 static void test_foreach_word_quoted(void) {
 399         check("test a b c 'd' e '' '' hhh '' '' \"a b c\"",
 400               STRV_MAKE("test",
 401                         "a",
 402                         "b",
 403                         "c",
 404                         "d",
 405                         "e",
 406                         "",
 407                         "",
 408                         "hhh",
 409                         "",
 410                         "",
 411                         "a b c"),
 412               false);
 413
 414         check("test \"xxx",
 415               STRV_MAKE("test"),
 416               true);
 417
 418         check("test\\",
 419               STRV_MAKE_EMPTY,
 420               true);
 421 }
 422
 423 static void test_endswith(void) {
 424         assert_se(endswith("foobar", "bar"));
 425         assert_se(endswith("foobar", ""));
 426         assert_se(endswith("foobar", "foobar"));
 427         assert_se(endswith("", ""));
 428
 429         assert_se(!endswith("foobar", "foo"));
 430         assert_se(!endswith("foobar", "foobarfoofoo"));
 431 }
 432
 433 static void test_endswith_no_case(void) {
 434         assert_se(endswith_no_case("fooBAR", "bar"));
 435         assert_se(endswith_no_case("foobar", ""));
 436         assert_se(endswith_no_case("foobar", "FOOBAR"));
 437         assert_se(endswith_no_case("", ""));
 438
 439         assert_se(!endswith_no_case("foobar", "FOO"));
 440         assert_se(!endswith_no_case("foobar", "FOOBARFOOFOO"));
 441 }
 442
 443 static void test_delete_chars(void) {
 444         char *s, input[] = "   hello, waldo.   abc";
 445
 446         s = delete_chars(input, WHITESPACE);
 447         assert_se(streq(s, "hello,waldo.abc"));
 448         assert_se(s == input);
 449 }
 450
 451 static void test_delete_trailing_chars(void) {
 452
 453         char *s,
 454                 input1[] = " \n \r k \n \r ",
 455                 input2[] = "kkkkthiskkkiskkkaktestkkk",
 456                 input3[] = "abcdef";
 457
 458         s = delete_trailing_chars(input1, WHITESPACE);
 459         assert_se(streq(s, " \n \r k"));
 460         assert_se(s == input1);
 461
 462         s = delete_trailing_chars(input2, "kt");
 463         assert_se(streq(s, "kkkkthiskkkiskkkaktes"));
 464         assert_se(s == input2);
 465
 466         s = delete_trailing_chars(input3, WHITESPACE);
 467         assert_se(streq(s, "abcdef"));
 468         assert_se(s == input3);
 469
 470         s = delete_trailing_chars(input3, "fe");
 471         assert_se(streq(s, "abcd"));
 472         assert_se(s == input3);
 473 }
 474
 475 static void test_delete_trailing_slashes(void) {
 476         char s1[] = "foobar//",
 477              s2[] = "foobar/",
 478              s3[] = "foobar",
 479              s4[] = "";
 480
 481         assert_se(streq(delete_trailing_chars(s1, "_"), "foobar//"));
 482         assert_se(streq(delete_trailing_chars(s1, "/"), "foobar"));
 483         assert_se(streq(delete_trailing_chars(s2, "/"), "foobar"));
 484         assert_se(streq(delete_trailing_chars(s3, "/"), "foobar"));
 485         assert_se(streq(delete_trailing_chars(s4, "/"), ""));
 486 }
 487
 488 static void test_skip_leading_chars(void) {
 489         char input1[] = " \n \r k \n \r ",
 490                 input2[] = "kkkkthiskkkiskkkaktestkkk",
 491                 input3[] = "abcdef";
 492
 493         assert_se(streq(skip_leading_chars(input1, WHITESPACE), "k \n \r "));
 494         assert_se(streq(skip_leading_chars(input2, "k"), "thiskkkiskkkaktestkkk"));
 495         assert_se(streq(skip_leading_chars(input2, "tk"), "hiskkkiskkkaktestkkk"));
 496         assert_se(streq(skip_leading_chars(input3, WHITESPACE), "abcdef"));
 497         assert_se(streq(skip_leading_chars(input3, "bcaef"), "def"));
 498 }
 499
 500 static void test_in_charset(void) {
 501         assert_se(in_charset("dddaaabbbcccc", "abcd"));
 502         assert_se(!in_charset("dddaaabbbcccc", "abc f"));
 503 }
 504
 505 static void test_split_pair(void) {
 506         _cleanup_free_ char *a = NULL, *b = NULL;
 507
 508         assert_se(split_pair("", "", &a, &b) == -EINVAL);
 509         assert_se(split_pair("foo=bar", "", &a, &b) == -EINVAL);
 510         assert_se(split_pair("", "=", &a, &b) == -EINVAL);
 511         assert_se(split_pair("foo=bar", "=", &a, &b) >= 0);
 512         assert_se(streq(a, "foo"));
 513         assert_se(streq(b, "bar"));
 514         free(a);
 515         free(b);
 516         assert_se(split_pair("==", "==", &a, &b) >= 0);
 517         assert_se(streq(a, ""));
 518         assert_se(streq(b, ""));
 519         free(a);
 520         free(b);
 521
 522         assert_se(split_pair("===", "==", &a, &b) >= 0);
 523         assert_se(streq(a, ""));
 524         assert_se(streq(b, "="));
 525 }
 526
 527 static void test_first_word(void) {
 528         assert_se(first_word("Hello", ""));
 529         assert_se(first_word("Hello", "Hello"));
 530         assert_se(first_word("Hello world", "Hello"));
 531         assert_se(first_word("Hello\tworld", "Hello"));
 532         assert_se(first_word("Hello\nworld", "Hello"));
 533         assert_se(first_word("Hello\rworld", "Hello"));
 534         assert_se(first_word("Hello ", "Hello"));
 535
 536         assert_se(!first_word("Hello", "Hellooo"));
 537         assert_se(!first_word("Hello", "xxxxx"));
 538         assert_se(!first_word("Hellooo", "Hello"));
 539 }
 540
 541 static void test_strlen_ptr(void) {
 542         assert_se(strlen_ptr("foo") == 3);
 543         assert_se(strlen_ptr("") == 0);
 544         assert_se(strlen_ptr(NULL) == 0);
 545 }
 546
 547 static void test_memory_startswith(void) {
 548         assert_se(streq(memory_startswith("", 0, ""), ""));
 549         assert_se(streq(memory_startswith("", 1, ""), ""));
 550         assert_se(streq(memory_startswith("x", 2, ""), "x"));
 551         assert_se(!memory_startswith("", 1, "x"));
 552         assert_se(!memory_startswith("", 1, "xxxxxxxx"));
 553         assert_se(streq(memory_startswith("xxx", 4, "x"), "xx"));
 554         assert_se(streq(memory_startswith("xxx", 4, "xx"), "x"));
 555         assert_se(streq(memory_startswith("xxx", 4, "xxx"), ""));
 556         assert_se(!memory_startswith("xxx", 4, "xxxx"));
 557 }
 558
 559 static void test_memory_startswith_no_case(void) {
 560         assert_se(streq(memory_startswith_no_case("", 0, ""), ""));
 561         assert_se(streq(memory_startswith_no_case("", 1, ""), ""));
 562         assert_se(streq(memory_startswith_no_case("x", 2, ""), "x"));
 563         assert_se(streq(memory_startswith_no_case("X", 2, ""), "X"));
 564         assert_se(!memory_startswith_no_case("", 1, "X"));
 565         assert_se(!memory_startswith_no_case("", 1, "xxxxXXXX"));
 566         assert_se(streq(memory_startswith_no_case("xxx", 4, "X"), "xx"));
 567         assert_se(streq(memory_startswith_no_case("XXX", 4, "x"), "XX"));
 568         assert_se(streq(memory_startswith_no_case("XXX", 4, "X"), "XX"));
 569         assert_se(streq(memory_startswith_no_case("xxx", 4, "XX"), "x"));
 570         assert_se(streq(memory_startswith_no_case("XXX", 4, "xx"), "X"));
 571         assert_se(streq(memory_startswith_no_case("XXX", 4, "XX"), "X"));
 572         assert_se(streq(memory_startswith_no_case("xxx", 4, "XXX"), ""));
 573         assert_se(streq(memory_startswith_no_case("XXX", 4, "xxx"), ""));
 574         assert_se(streq(memory_startswith_no_case("XXX", 4, "XXX"), ""));
 575
 576         assert_se(memory_startswith_no_case((char[2]){'x', 'x'}, 2, "xx"));
 577         assert_se(memory_startswith_no_case((char[2]){'x', 'X'}, 2, "xX"));
 578         assert_se(memory_startswith_no_case((char[2]){'X', 'x'}, 2, "Xx"));
 579         assert_se(memory_startswith_no_case((char[2]){'X', 'X'}, 2, "XX"));
 580 }
 581
 582 int main(int argc, char *argv[]) {
 583         test_setup_logging(LOG_DEBUG);
 584
 585         test_string_erase();
 586         test_free_and_strndup();
 587         test_ascii_strcasecmp_n();
 588         test_ascii_strcasecmp_nn();
 589         test_cellescape();
 590         test_streq_ptr();
 591         test_strstrip();
 592         test_strextend();
 593         test_strextend_with_separator();
 594         test_strrep();
 595         test_strappend();
 596         test_string_has_cc();
 597         test_ascii_strlower();
 598         test_strshorten();
 599         test_strjoina();
 600         test_strcmp_ptr();
 601         test_foreach_word();
 602         test_foreach_word_quoted();
 603         test_endswith();
 604         test_endswith_no_case();
 605         test_delete_chars();
 606         test_delete_trailing_chars();
 607         test_delete_trailing_slashes();
 608         test_skip_leading_chars();
 609         test_in_charset();
 610         test_split_pair();
 611         test_first_word();
 612         test_strlen_ptr();
 613         test_memory_startswith();
 614         test_memory_startswith_no_case();
 615
 616         return 0;
 617 }