1 #include <stdio.h> 2 #include <wchar.h> 3 4 #include <minitest/minitest.h> 5 6 TEST(stdio,snprintf) { 7 char char_buff[32]; 8 size_t char_buff_len = sizeof(char_buff) / sizeof(char); 9 EXPECT_EQ(2, snprintf(char_buff, char_buff_len, "ab")); 10 EXPECT_EQ(5, snprintf(char_buff, char_buff_len, "%s", "abcde")); 11 static const char kString[] = "Hello, World"; 12 EXPECT_EQ(12, snprintf(char_buff, char_buff_len, "%s", kString)); 13 EXPECT_EQ(12, snprintf(char_buff, 13, "%s", kString)); 14 15 EXPECT_EQ(12, snprintf(char_buff, 12, "%s", kString)); 16 EXPECT_EQ(L'\0', char_buff[11]); 17 EXPECT_EQ(12, snprintf(char_buff, 1, "%s", kString)); 18 EXPECT_EQ(L'\0', char_buff[0]); 19 } 20 21 TEST(stdio,swprintf) { 22 wchar_t wide_buff[32]; 23 size_t wide_buff_len = sizeof(wide_buff) / sizeof(wchar_t); 24 EXPECT_EQ(2, swprintf(wide_buff, wide_buff_len, L"ab")); 25 EXPECT_EQ(5, swprintf(wide_buff, wide_buff_len, L"%s", "abcde")); 26 static const wchar_t kWideString[] = L"Hello\uff41 World"; 27 EXPECT_EQ(12, swprintf(wide_buff, wide_buff_len, L"%ls", kWideString)); 28 EXPECT_EQ(12, swprintf(wide_buff, 13, L"%ls", kWideString)); 29 30 // Unlike snprintf(), swprintf() returns -1 in case of truncation 31 // and doesn't necessarily zero-terminate the output! 32 EXPECT_EQ(-1, swprintf(wide_buff, 12, L"%ls", kWideString)); 33 EXPECT_EQ(-1, swprintf(wide_buff, 1, L"%ls", kWideString)); 34 } 35 36
