_vsnprintf.c

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/*
 * PROJECT:         ReactOS api tests
 * LICENSE:         GPL - See COPYING in the top level directory
 * PURPOSE:         Test for _vsnprintf
 */
 
#include <apitest.h>
 
#define WIN32_NO_STATUS
#include <stdio.h>
#include <tchar.h>
#include <pseh/pseh2.h>
#include <ndk/mmfuncs.h>
#include <ndk/rtlfuncs.h>
 
static void call_varargs(char* buf, size_t buf_size, int expected_ret, LPCSTR formatString, ...)
{
    va_list args;
    int ret;
    /* Test the basic functionality */
    va_start(args, formatString);
    ret = _vsnprintf(buf, buf_size, formatString, args);
    va_end(args);
    ok(expected_ret == ret, "Test failed: expected %i, got %i.\n", expected_ret, ret);
}
 
START_TEST(_vsnprintf)
{
    char buffer[255];
 
    /* Here you can mix wide and ANSI strings */
    call_varargs(buffer, 255, 12, "%S world!", L"hello");
    call_varargs(buffer, 255, 12, "%s world!", "hello");
    call_varargs(buffer, 255, 11, "%u cookies", 100);
 
    StartSeh()
#if defined(TEST_CRTDLL)||defined(TEST_USER32)
        call_varargs(NULL, INT_MAX, -1, "%s it really work?", "does");
#else
        call_varargs(NULL, INT_MAX, 20, "%s it really work?", "does");
#endif
 
#if defined(TEST_CRTDLL)||defined(TEST_USER32)
    EndSeh(STATUS_ACCESS_VIOLATION);
#else
    EndSeh(STATUS_SUCCESS);
#endif
 
#if defined(TEST_USER32) /* NTDLL doesn't use/set errno */
    ok(errno == EINVAL, "Expected EINVAL, got %u\n", errno);
#else
    ok(errno == 0, "Expected 0, got %u\n", errno);
#endif
 
    /* This one is no better */
    StartSeh()
#if defined(TEST_CRTDLL)||defined(TEST_USER32)
        call_varargs(NULL, 0, -1, "%s it really work?", "does");
#else
        call_varargs(NULL, 0, 20, "%s it really work?", "does");
#endif
 
#if defined(TEST_USER32)
    EndSeh(STATUS_ACCESS_VIOLATION);
#else
    EndSeh(STATUS_SUCCESS);
#endif
 
#if defined(TEST_USER32) /* NTDLL doesn't use/set errno */
    ok(errno == EINVAL, "Expected EINVAL, got %u\n", errno);
#else
    ok(errno == 0, "Expected 0, got %u\n", errno);
#endif
 
    /* One more NULL checks */
    StartSeh()
        call_varargs(buffer, 255, -1, NULL);
    EndSeh(STATUS_ACCESS_VIOLATION);
 
#if defined(TEST_USER32) /* NTDLL doesn't use/set errno */
    ok(errno == EINVAL, "Expected EINVAL, got %u\n", errno);
#else
    ok(errno == 0, "Expected 0, got %u\n", errno);
#endif
}