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#include "tests.h"#include <wctype.h> int main(int argc, char **argv){     int error = 0, better = 0;     utf8proc_int32_t c;      (void) argc; /* unused */     (void) argv; /* unused */      /* some simple sanity tests of the character widths */     for (c = 0; c <= 0x110000; ++c) {          utf8proc_int32_t l = utf8proc_tolower(c);          utf8proc_int32_t u = utf8proc_toupper(c);          utf8proc_int32_t t = utf8proc_totitle(c);           check(l == c || utf8proc_codepoint_valid(l), "invalid tolower");          check(u == c || utf8proc_codepoint_valid(u), "invalid toupper");          check(t == c || utf8proc_codepoint_valid(t), "invalid totitle");           if (utf8proc_codepoint_valid(c) && (l == u) != (l == t) &&              /* Unicode 11: Georgian Mkhedruli chars have uppercase but no titlecase. */              !(((c >= 0x10d0 && c <= 0x10fa) || c >= (0x10fd && c <= 0x10ff)) && l != u)) {               fprintf(stderr, "unexpected titlecase %x for lowercase %x / uppercase %x\n", t, l, c);               ++error;          }           if (sizeof(wint_t) > 2 || c < (1<<16)) {               wint_t l0 = towlower(c), u0 = towupper(c);                /* OS unicode tables may be out of date.  But if they                  do have a lower/uppercase mapping, hopefully it                  is correct? */               if (l0 != c && l0 != l) {                    fprintf(stderr, "MISMATCH %x != towlower(%x) == %x\n",                            l, c, l0);                    ++error;               }               else if (l0 != l) { /* often true for out-of-date OS unicode */                    ++better;                    /* printf("%x != towlower(%x) == %x\n", l, c, l0); */               }               if (u0 != c && u0 != u) {                    fprintf(stderr, "MISMATCH %x != towupper(%x) == %x\n",                            u, c, u0);                    ++error;               }               else if (u0 != u) { /* often true for out-of-date OS unicode */                    ++better;                    /* printf("%x != towupper(%x) == %x\n", u, c, u0); */               }          }     }     check(!error, "utf8proc case conversion FAILED %d tests.", error);      /* issue #130 */     check(utf8proc_toupper(0x00df) == 0x1e9e &&           utf8proc_totitle(0x00df) == 0x1e9e &&           utf8proc_tolower(0x00df) == 0x00df &&           utf8proc_tolower(0x1e9e) == 0x00df &&           utf8proc_toupper(0x1e9e) == 0x1e9e,           "incorrect 0x00df/0x1e9e case conversions");     utf8proc_uint8_t str_00df[] = {0xc3, 0x9f, 0x00};     utf8proc_uint8_t str_1e9e[] = {0xe1, 0xba, 0x9e, 0x00};     check(!strcmp((char*)utf8proc_NFKC_Casefold(str_00df), "ss") &&           !strcmp((char*)utf8proc_NFKC_Casefold(str_1e9e), "ss"),           "incorrect 0x00df/0x1e9e casefold normalization");      printf("More up-to-date than OS unicode tables for %d tests.\n", better);     printf("utf8proc case conversion tests SUCCEEDED.\n");     return 0;}