modules/rostests/apitests/kernel32/MultiByteToWideChar.c

   1 /*
   2  * PROJECT:         ReactOS api tests
   3  * LICENSE:         GPLv2+ - See COPYING in the top level directory
   4  * PURPOSE:         Test for MultiByteToWideChar
   5  * PROGRAMMERS:     Mike "tamlin" Nordell
   6  *                  Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
   7  */
   8
   9 #include "precomp.h"
  10
  11 /* NOTE: Tested on Win10. We follow Win10 in this function.
  12          Win10 might alter its design in future. */
  13
  14 /* TODO: Russian, French, Korean etc. codepages */
  15
  16 #define CP932   932     /* Japanese Shift_JIS (SJIS) codepage */
  17
  18 /* "Japanese" in Japanese UTF-8 */
  19 static const char UTF8_Japanese[] = "\xE6\x97\xA5\xE6\x9C\xAC\xE8\xAA\x9E";
  20 /* "Japanese" in Japanese Shift_JIS */
  21 static const char SJIS_Japanese[] = "\x93\xFA\x96\x7B\x8C\xEA";
  22
  23 #define MAX_BUFFER  10
  24
  25 /* test entry */
  26 typedef struct ENTRY
  27 {
  28     int LineNo;
  29     int Return;
  30     DWORD Error;
  31     UINT CodePage;
  32     DWORD Flags;
  33     const char *Src;
  34     int SrcLen;
  35     int DestLen;
  36     WCHAR CheckDest[MAX_BUFFER];
  37     int CheckLen;
  38     BOOL SamePointer;
  39 } ENTRY;
  40
  41 static const ENTRY Entries[] =
  42 {
  43     /* without buffer */
  44     { __LINE__, 1, 0xBEAF, CP_UTF8, 0, "a", 1 },
  45     { __LINE__, 2, 0xBEAF, CP_UTF8, 0, "a", 2 },
  46     { __LINE__, 2, 0xBEAF, CP_UTF8, MB_ERR_INVALID_CHARS, "a", 2 },
  47     /* negative length */
  48     { __LINE__, 2, 0xBEAF, CP_UTF8, 0, "a", -1 },
  49     { __LINE__, 2, 0xBEAF, CP_UTF8, 0, "a", -2 },
  50     { __LINE__, 2, 0xBEAF, CP_UTF8, MB_ERR_INVALID_CHARS, "a", -1 },
  51     { __LINE__, 2, 0xBEAF, CP_UTF8, MB_ERR_INVALID_CHARS, "a", -3 },
  52     /* with buffer */
  53     { __LINE__, 1, 0xBEAF, CP_UTF8, 0, "a", 1, 1, {'a', 0x7F7F}, 2 },
  54     { __LINE__, 2, 0xBEAF, CP_UTF8, 0, "a", 2, 4, {'a', 0, 0x7F7F}, 3 },
  55     { __LINE__, 2, 0xBEAF, CP_UTF8, MB_ERR_INVALID_CHARS, "a", 2, 4, {'a', 0, 0x7F7F}, 3 },
  56     /* short buffer */
  57     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, 0, "a", 2, 1, {'a', 0x7F7F}, 2 },
  58     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, 0, "a", 2, 1, {'a', 0x7F7F}, 2 },
  59     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, MB_ERR_INVALID_CHARS, "a", 2, 1, {'a', 0x7F7F}, 2 },
  60     /* same pointer */
  61     { __LINE__, 0, ERROR_INVALID_PARAMETER, CP_UTF8, 0, "", 1, 1, { 0x7F7F }, 1, TRUE },
  62     { __LINE__, 0, ERROR_INVALID_PARAMETER, CP_UTF8, MB_ERR_INVALID_CHARS, "", 1, 1, { 0x7F7F }, 1, TRUE },
  63     /* invalid UTF-8 sequences without buffer */
  64     { __LINE__, 2, 0xBEAF, CP_UTF8, 0, "\xC0", 2 },
  65     { __LINE__, 4, 0xBEAF, CP_UTF8, 0, "\xC0\xC0\x80", 4 },
  66     { __LINE__, 3, 0xBEAF, CP_UTF8, 0, "\xE0\xC0", 3 },
  67     { __LINE__, 4, 0xBEAF, CP_UTF8, 0, "\xE0\x20\xC0", 4 },
  68     { __LINE__, 0, ERROR_NO_UNICODE_TRANSLATION, CP_UTF8, MB_ERR_INVALID_CHARS, "\xC0", 2 },
  69     { __LINE__, 0, ERROR_NO_UNICODE_TRANSLATION, CP_UTF8, MB_ERR_INVALID_CHARS, "\xC0\xC0\x80", 4 },
  70     { __LINE__, 0, ERROR_NO_UNICODE_TRANSLATION, CP_UTF8, MB_ERR_INVALID_CHARS, "\xE0\xC0", 3 },
  71     { __LINE__, 0, ERROR_NO_UNICODE_TRANSLATION, CP_UTF8, MB_ERR_INVALID_CHARS, "\xE0\x20\xC0", 4 },
  72     /* invalid UTF-8 sequences with buffer */
  73     { __LINE__, 2, 0xBEAF, CP_UTF8, 0, "\xC0", 2, 4, {0xFFFD, 0, 0x7F7F}, 3},
  74     { __LINE__, 4, 0xBEAF, CP_UTF8, 0, "\xC0\xC0\x80", 4, 5, {0xFFFD, 0xFFFD, 0xFFFD, 0, 0x7F7F}, 5 },
  75     { __LINE__, 3, 0xBEAF, CP_UTF8, 0, "\xE0\xC0", 3, 4, {0xFFFD, 0xFFFD, 0, 0x7F7F}, 4 },
  76     { __LINE__, 4, 0xBEAF, CP_UTF8, 0, "\xE0\x20\xC0", 4, 5, {0xFFFD, 0x0020, 0xFFFD, 0, 0x7F7F}, 5 },
  77     { __LINE__, 0, ERROR_NO_UNICODE_TRANSLATION, CP_UTF8, MB_ERR_INVALID_CHARS, "\xC0", 2, 4, {0xFFFD, 0, 0x7F7F}, 3 },
  78     { __LINE__, 0, ERROR_NO_UNICODE_TRANSLATION, CP_UTF8, MB_ERR_INVALID_CHARS, "\xC0\xC0\x80", 4, 5, {0xFFFD, 0xFFFD, 0xFFFD, 0, 0x7F7F}, 5 },
  79     { __LINE__, 0, ERROR_NO_UNICODE_TRANSLATION, CP_UTF8, MB_ERR_INVALID_CHARS, "\xE0\xC0", 3, 4, {0xFFFD, 0xFFFD, 0, 0x7F7F}, 4 },
  80     { __LINE__, 0, ERROR_NO_UNICODE_TRANSLATION, CP_UTF8, MB_ERR_INVALID_CHARS, "\xE0\x20\xC0", 4, 5, {0xFFFD, 0x0020, 0xFFFD, 0, 0x7F7F}, 5 },
  81     /* invalid UTF-8 sequences with short buffer */
  82     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, 0, "\xC0", 2, 1, {0xFFFD, 0x7F7F}, 2},
  83     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, 0, "\xC0\xC0\x80", 4, 1, {0xFFFD, 0x7F7F}, 2 },
  84     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, 0, "\xE0\xC0", 3, 1, {0xFFFD, 0x7F7F}, 2 },
  85     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, 0, "\xE0\x20\xC0", 4, 1, {0xFFFD, 0x7F7F}, 2 },
  86     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, MB_ERR_INVALID_CHARS, "\xC0", 2, 1, {0xFFFD, 0x7F7F}, 2 },
  87     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, MB_ERR_INVALID_CHARS, "\xC0\xC0\x80", 4, 1, {0xFFFD, 0x7F7F}, 2 },
  88     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, MB_ERR_INVALID_CHARS, "\xE0\xC0", 3, 1, {0xFFFD, 0x7F7F}, 2 },
  89     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, MB_ERR_INVALID_CHARS, "\xE0\x20\xC0", 4, 1, {0xFFFD, 0x7F7F}, 2 },
  90     /* Japanese UTF-8 without buffer */
  91     { __LINE__, 4, 0xBEAF, CP_UTF8, 0, UTF8_Japanese, sizeof(UTF8_Japanese) },
  92     { __LINE__, 4, 0xBEAF, CP_UTF8, MB_ERR_INVALID_CHARS, UTF8_Japanese, sizeof(UTF8_Japanese) },
  93     /* Japanese UTF-8 with buffer */
  94     { __LINE__, 4, 0xBEAF, CP_UTF8, 0, UTF8_Japanese, sizeof(UTF8_Japanese), 4, {0x65E5, 0x672C, 0x8A9E, 0, 0x7F7F}, 5 },
  95     { __LINE__, 4, 0xBEAF, CP_UTF8, MB_ERR_INVALID_CHARS, UTF8_Japanese, sizeof(UTF8_Japanese), 4, {0x65E5, 0x672C, 0x8A9E, 0, 0x7F7F}, 5 },
  96     /* Japanese UTF-8 with short buffer */
  97     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, 0, UTF8_Japanese, sizeof(UTF8_Japanese), 1, {0x65E5, 0x7F7F}, 2 },
  98     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, MB_ERR_INVALID_CHARS, UTF8_Japanese, sizeof(UTF8_Japanese), 1, {0x65E5, 0x7F7F}, 2 },
  99     /* Japanese UTF-8 truncated source */
 100     { __LINE__, 1, 0xBEAF, CP_UTF8, 0, UTF8_Japanese, 1, 4, {0xFFFD, 0x7F7F}, 2 },
 101     { __LINE__, 0, ERROR_NO_UNICODE_TRANSLATION, CP_UTF8, MB_ERR_INVALID_CHARS, UTF8_Japanese, 1, 4, {0xFFFD, 0x7F7F}, 2 },
 102     /* Japanese CP932 without buffer */
 103     { __LINE__, 4, 0xBEAF, CP932, 0, SJIS_Japanese, sizeof(SJIS_Japanese) },
 104     { __LINE__, 4, 0xBEAF, CP932, MB_ERR_INVALID_CHARS, SJIS_Japanese, sizeof(SJIS_Japanese) },
 105     /* Japanese CP932 with buffer */
 106     { __LINE__, 4, 0xBEAF, CP932, 0, SJIS_Japanese, sizeof(SJIS_Japanese), 4, {0x65E5, 0x672C, 0x8A9E, 0, 0x7F7F}, 5 },
 107     { __LINE__, 4, 0xBEAF, CP932, MB_ERR_INVALID_CHARS, SJIS_Japanese, sizeof(SJIS_Japanese), 4, {0x65E5, 0x672C, 0x8A9E, 0, 0x7F7F}, 5 },
 108     /* Japanese CP932 with short buffer */
 109     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP932, 0, SJIS_Japanese, sizeof(SJIS_Japanese), 1, {0x65E5, 0x7F7F}, 2 },
 110     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP932, MB_ERR_INVALID_CHARS, SJIS_Japanese, sizeof(SJIS_Japanese), 1, {0x65E5, 0x7F7F}, 2 },
 111     /* Japanese CP932 truncated source */
 112     { __LINE__, 1, 0xBEAF, CP932, 0, SJIS_Japanese, 1, 4, {0x30FB, 0x7F7F}, 2 },
 113     { __LINE__, 0, ERROR_NO_UNICODE_TRANSLATION, CP932, MB_ERR_INVALID_CHARS, SJIS_Japanese, 1, 4, {0x7F7F, 0x7F7F}, 2 },
 114     /* invalid 5-byte UTF-8 sequences */
 115     { __LINE__, 1, 0xBEAF, CP_UTF8, 0, "\xF8\xA3\xA3\xA3\xA3", 1, 8, {0xFFFD, 0x7F7F}, 2 },
 116     { __LINE__, 2, 0xBEAF, CP_UTF8, 0, "\xF8\xA3\xA3\xA3\xA3", 2, 8, {0xFFFD, 0xFFFD, 0x7F7F}, 3 },
 117     { __LINE__, 3, 0xBEAF, CP_UTF8, 0, "\xF8\xA3\xA3\xA3\xA3", 3, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 4 },
 118     { __LINE__, 4, 0xBEAF, CP_UTF8, 0, "\xF8\xA3\xA3\xA3\xA3", 4, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 5 },
 119     { __LINE__, 5, 0xBEAF, CP_UTF8, 0, "\xF8\xA3\xA3\xA3\xA3", 5, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 6 },
 120     { __LINE__, 6, 0xBEAF, CP_UTF8, 0, "\xF8\xA3\xA3\xA3\xA3", 6, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0}, 6 },
 121     /* invalid 6-byte UTF-8 sequences */
 122     { __LINE__, 1, 0xBEAF, CP_UTF8, 0, "\xFC\xA3\xA3\xA3\xA3\xA3", 1, 8, {0xFFFD, 0x7F7F}, 2 },
 123     { __LINE__, 2, 0xBEAF, CP_UTF8, 0, "\xFC\xA3\xA3\xA3\xA3\xA3", 2, 8, {0xFFFD, 0xFFFD, 0x7F7F}, 3 },
 124     { __LINE__, 3, 0xBEAF, CP_UTF8, 0, "\xFC\xA3\xA3\xA3\xA3\xA3", 3, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 4 },
 125     { __LINE__, 4, 0xBEAF, CP_UTF8, 0, "\xFC\xA3\xA3\xA3\xA3\xA3", 4, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 5 },
 126     { __LINE__, 5, 0xBEAF, CP_UTF8, 0, "\xFC\xA3\xA3\xA3\xA3\xA3", 5, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 6 },
 127     { __LINE__, 6, 0xBEAF, CP_UTF8, 0, "\xFC\xA3\xA3\xA3\xA3\xA3", 6, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 7 },
 128     { __LINE__, 7, 0xBEAF, CP_UTF8, 0, "\xFC\xA3\xA3\xA3\xA3\xA3", 7, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0}, 7 },
 129     /* invalid 7-byte UTF-8 sequences */
 130     { __LINE__, 1, 0xBEAF, CP_UTF8, 0, "\xFE\xA3\xA3\xA3\xA3\xA3\xA3", 1, 8, {0xFFFD, 0x7F7F}, 2 },
 131     { __LINE__, 2, 0xBEAF, CP_UTF8, 0, "\xFE\xA3\xA3\xA3\xA3\xA3\xA3", 2, 8, {0xFFFD, 0xFFFD, 0x7F7F}, 3 },
 132     { __LINE__, 3, 0xBEAF, CP_UTF8, 0, "\xFE\xA3\xA3\xA3\xA3\xA3\xA3", 3, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 4 },
 133     { __LINE__, 4, 0xBEAF, CP_UTF8, 0, "\xFE\xA3\xA3\xA3\xA3\xA3\xA3", 4, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 5 },
 134     { __LINE__, 5, 0xBEAF, CP_UTF8, 0, "\xFE\xA3\xA3\xA3\xA3\xA3\xA3", 5, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 6 },
 135     { __LINE__, 6, 0xBEAF, CP_UTF8, 0, "\xFE\xA3\xA3\xA3\xA3\xA3\xA3", 6, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 7 },
 136     { __LINE__, 7, 0xBEAF, CP_UTF8, 0, "\xFE\xA3\xA3\xA3\xA3\xA3\xA3", 7, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 8 },
 137     { __LINE__, 8, 0xBEAF, CP_UTF8, 0, "\xFE\xA3\xA3\xA3\xA3\xA3\xA3", 8, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0}, 8 },
 138     /* invalid UTF-8 sequences */
 139     { __LINE__, 1, 0xBEAF, CP_UTF8, 0, "\xFF\xA3\xA3\xA3\xA3\xA3\xA3\xA3", 1, 8, {0xFFFD, 0x7F7F}, 2 },
 140     { __LINE__, 2, 0xBEAF, CP_UTF8, 0, "\xFF\xA3\xA3\xA3\xA3\xA3\xA3\xA3", 2, 8, {0xFFFD, 0xFFFD, 0x7F7F}, 3 },
 141     { __LINE__, 3, 0xBEAF, CP_UTF8, 0, "\xFF\xA3\xA3\xA3\xA3\xA3\xA3\xA3", 3, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 4 },
 142     { __LINE__, 4, 0xBEAF, CP_UTF8, 0, "\xFF\xA3\xA3\xA3\xA3\xA3\xA3\xA3", 4, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 5 },
 143     { __LINE__, 5, 0xBEAF, CP_UTF8, 0, "\xFF\xA3\xA3\xA3\xA3\xA3\xA3\xA3", 5, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 6 },
 144     { __LINE__, 6, 0xBEAF, CP_UTF8, 0, "\xFF\xA3\xA3\xA3\xA3\xA3\xA3\xA3", 6, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 7 },
 145     { __LINE__, 7, 0xBEAF, CP_UTF8, 0, "\xFF\xA3\xA3\xA3\xA3\xA3\xA3\xA3", 7, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 8 },
 146     { __LINE__, 8, 0xBEAF, CP_UTF8, 0, "\xFF\xA3\xA3\xA3\xA3\xA3\xA3\xA3", 8, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 9 },
 147     { __LINE__, 0, ERROR_INSUFFICIENT_BUFFER, CP_UTF8, 0, "\xFF\xA3\xA3\xA3\xA3\xA3\xA3\xA3", 9, 8, {0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0x7F7F}, 9 },
 148 };
 149
 150 static void TestEntry(const ENTRY *pEntry)
 151 {
 152     int ret, i;
 153     WCHAR Buffer[MAX_BUFFER];
 154     DWORD Error;
 155
 156     FillMemory(Buffer, sizeof(Buffer), 0x7F);
 157     SetLastError(0xBEAF);
 158
 159     if (pEntry->DestLen == 0)
 160     {
 161         /* dest is NULL */
 162         ret = MultiByteToWideChar(pEntry->CodePage, pEntry->Flags, pEntry->Src,
 163                                   pEntry->SrcLen, NULL, 0);
 164     }
 165     else
 166     {
 167         ok(pEntry->DestLen >= pEntry->CheckLen - 1,
 168            "Line %d: DestLen was shorter than (CheckLen - 1)\n", pEntry->LineNo);
 169
 170         if (pEntry->SamePointer)
 171         {
 172             /* src ptr == dest ptr */
 173             ret = MultiByteToWideChar(pEntry->CodePage, pEntry->Flags,
 174                                       (const char *)Buffer, pEntry->SrcLen,
 175                                       Buffer, pEntry->DestLen);
 176         }
 177         else
 178         {
 179             /* src ptr != dest ptr */
 180             ret = MultiByteToWideChar(pEntry->CodePage, pEntry->Flags,
 181                                       pEntry->Src, pEntry->SrcLen,
 182                                       Buffer, pEntry->DestLen);
 183         }
 184     }
 185
 186     Error = GetLastError();
 187
 188     /* check ret */
 189     ok(ret == pEntry->Return, "Line %d: ret expected %d, got %d\n",
 190        pEntry->LineNo, pEntry->Return, ret);
 191
 192     /* check error code */
 193     ok(Error == pEntry->Error,
 194        "Line %d: Wrong last error. Expected %lu, got %lu\n",
 195        pEntry->LineNo, pEntry->Error, Error);
 196
 197     if (pEntry->DestLen)
 198     {
 199         /* check buffer */
 200         for (i = 0; i < pEntry->CheckLen; ++i)
 201         {
 202             ok(Buffer[i] == pEntry->CheckDest[i], "Line %d: Buffer[%d] expected %d, got %d\n",
 203                pEntry->LineNo, i, pEntry->CheckDest[i], Buffer[i]);
 204         }
 205     }
 206 }
 207
 208 typedef NTSTATUS (WINAPI* RTLGETVERSION)(PRTL_OSVERSIONINFOW);
 209
 210 static RTL_OSVERSIONINFOW *GetRealOSVersion(void)
 211 {
 212     static RTL_OSVERSIONINFOW osvi = { 0 };
 213     RTL_OSVERSIONINFOW *ptr = NULL;
 214     HINSTANCE hNTDLL = LoadLibraryW(L"ntdll.dll");
 215     RTLGETVERSION fn;
 216     if (hNTDLL)
 217     {
 218         fn = (RTLGETVERSION)GetProcAddress(hNTDLL, "RtlGetVersion");
 219         if (fn)
 220         {
 221             osvi.dwOSVersionInfoSize = sizeof(osvi);
 222             if (fn(&osvi) == STATUS_SUCCESS)
 223             {
 224                 ptr = &osvi;
 225             }
 226         }
 227         FreeLibrary(hNTDLL);
 228     }
 229     return ptr;
 230 }
 231
 232 static BOOL IsWin10Plus(void)
 233 {
 234     RTL_OSVERSIONINFOW *info = GetRealOSVersion();
 235     if (!info)
 236         return FALSE;
 237
 238     return info->dwMajorVersion >= 10;
 239 }
 240
 241 static BOOL IsReactOS(void)
 242 {
 243     WCHAR szWinDir[MAX_PATH];
 244     GetWindowsDirectoryW(szWinDir, _countof(szWinDir));
 245     return (wcsstr(szWinDir, L"ReactOS") != NULL);
 246 }
 247
 248 START_TEST(MultiByteToWideChar)
 249 {
 250     size_t i;
 251
 252     if (!IsWin10Plus() && !IsReactOS())
 253     {
 254         trace("This test is designed for Windows 10+ and ReactOS.\n"
 255               "It is expected to report some failures on older Windows versions.\n");
 256 #if 0
 257         skip("\n");
 258         return;
 259 #endif
 260     }
 261
 262     for (i = 0; i < _countof(Entries); ++i)
 263     {
 264         TestEntry(&Entries[i]);
 265     }
 266 }