extern void func_wcsnlen(void);
extern void func_wcstombs(void);
extern void func_wcstoul(void);
+extern void func_wctomb(void);
extern void func___getmainargs(void);
extern void func_static_construct(void);
{ "strlen", func_strlen },
{ "strtoul", func_strtoul },
{ "wcstoul", func_wcstoul },
+ { "wctomb", func_wctomb },
{ "wcstombs", func_wcstombs },
#if defined(TEST_CRTDLL) || defined(TEST_MSVCRT) || defined(TEST_STATIC_CRT)
// ...
--- /dev/null
+/*
+ * PROJECT: ReactOS API tests
+ * LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
+ * PURPOSE: Tests for wctomb
+ * COPYRIGHT: Copyright 2020 Bișoc George <george.bisoc@reactos.org>
+ */
+
+#include <apitest.h>
+#include <apitest_guard.h>
+
+#define WIN32_NO_STATUS
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <locale.h>
+
+unsigned int cdecl ___lc_codepage_func(void);
+
+START_TEST(wctomb)
+{
+ int Length;
+ char *chDest;
+ char *loc;
+ unsigned int codepage = ___lc_codepage_func();
+ wchar_t wchSrc[2] = {L'R', 0414}; // 0414 corresponds to a Russian character in Windows-1251
+
+ chDest = AllocateGuarded(sizeof(*chDest));
+ if (!chDest)
+ {
+ skip("Buffer allocation failed!\n");
+ return;
+ }
+
+ /* Output the current locale of the system and codepage for comparison between ReactOS and Windows */
+ loc = setlocale(LC_ALL, NULL);
+ printf("The current codepage of your system tested is (%u) and locale (%s).\n\n", codepage, loc);
+
+ /* Do not give output to the caller */
+ Length = wctomb(NULL, 0);
+ ok(Length == 0, "Expected no characters to be converted (because the output argument is refused) but got %d\n.", Length);
+
+ /* Do the same but expect a valid wide character argument this time */
+ Length = wctomb(NULL, wchSrc[0]);
+ ok(Length == 0, "Expected no characters to be converted (because the output argument is refused) but got %d\n.", Length);
+
+ /* Don't return anything to the output even if conversion is impossible */
+ Length = wctomb(NULL, wchSrc[1]);
+ 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);
+ ok(Length == 0, "Expected no characters to be converted (because the output argument is refused) but got %d\n.", Length);
+
+ /* Attempt to convert a character not possible in current locale */
+ Length = wctomb(chDest, wchSrc[1]);
+ ok(Length == -1, "The conversion is not possible in current locale but got %d as returned value.\n", Length);
+ ok(errno == EILSEQ, "EILSEQ is expected in an illegal sequence conversion but got %d.\n", errno);
+
+ /* Return a null wide character to the destination argument */
+ Length = wctomb(chDest, 0);
+ ok(Length == 1, "Expected one character to be converted (the null character) but got %d.\n", Length);
+ ok_int(chDest[0], '\0');
+
+ /* Get the converted output and validate what we should get */
+ Length = wctomb(chDest, wchSrc[0]);
+ ok(Length == 1, "Expected one character to be converted but got %d.\n", Length);
+ ok_int(chDest[0], 'R');
+
+ FreeGuarded(chDest);
+}