modules/rostests/apitests/crt/wctomb.c

   1 /*
   2  * PROJECT:         ReactOS API tests
   3  * LICENSE:         GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
   4  * PURPOSE:         Tests for wctomb
   5  * COPYRIGHT:       Copyright 2020 George Bișoc <george.bisoc@reactos.org>
   6  */
   7
   8 #include <apitest.h>
   9 #include <apitest_guard.h>
  10
  11 #define WIN32_NO_STATUS
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <errno.h>
  15 #include <locale.h>
  16
  17 unsigned int cdecl ___lc_codepage_func(void);
  18
  19 START_TEST(wctomb)
  20 {
  21     int Length;
  22     char *chDest;
  23     char *loc;
  24     unsigned int codepage = ___lc_codepage_func();
  25     wchar_t wchSrc[2] = {L'R', 0414}; // 0414 corresponds to a Russian character in Windows-1251
  26
  27     chDest = AllocateGuarded(sizeof(*chDest));
  28     if (!chDest)
  29     {
  30         skip("Buffer allocation failed!\n");
  31         return;
  32     }
  33
  34     /* Output the current locale of the system and codepage for comparison between ReactOS and Windows */
  35     loc = setlocale(LC_ALL, NULL);
  36     printf("The current codepage of your system tested is (%u) and locale (%s).\n\n", codepage, loc);
  37
  38     /* Do not give output to the caller */
  39     Length = wctomb(NULL, 0);
  40     ok(Length == 0, "Expected no characters to be converted (because the output argument is refused) but got %d\n.", Length);
  41
  42     /* Do the same but expect a valid wide character argument this time */
  43     Length = wctomb(NULL, wchSrc[0]);
  44     ok(Length == 0, "Expected no characters to be converted (because the output argument is refused) but got %d\n.", Length);
  45
  46     /* Don't return anything to the output even if conversion is impossible */
  47     Length = wctomb(NULL, wchSrc[1]);
  48     ok(errno == 0, "The error number (errno) should be 0 even though an invalid character in current locale is given but got %d.\n", errno);
  49     ok(Length == 0, "Expected no characters to be converted (because the output argument is refused) but got %d\n.", Length);
  50
  51     /* Attempt to convert a character not possible in current locale */
  52     Length = wctomb(chDest, wchSrc[1]);
  53     ok(Length == -1, "The conversion is not possible in current locale but got %d as returned value.\n", Length);
  54     ok(errno == EILSEQ, "EILSEQ is expected in an illegal sequence conversion but got %d.\n", errno);
  55
  56     /* Return a null wide character to the destination argument */
  57     Length = wctomb(chDest, 0);
  58     ok(Length == 1, "Expected one character to be converted (the null character) but got %d.\n", Length);
  59     ok_int(chDest[0], '\0');
  60
  61     /* Get the converted output and validate what we should get */
  62     Length = wctomb(chDest, wchSrc[0]);
  63     ok(Length == 1, "Expected one character to be converted but got %d.\n", Length);
  64     ok_int(chDest[0], 'R');
  65
  66     FreeGuarded(chDest);
  67 }