58 lines · cpp
1//===-- Unittests for wcslcat ---------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "hdr/types/size_t.h"10#include "hdr/types/wchar_t.h"11#include "src/wchar/wcslcat.h"12#include "test/UnitTest/Test.h"13 14TEST(LlvmLibcWCSLCatTest, TooBig) {15 const wchar_t *src = L"cd";16 wchar_t dst[4]{L"ab"};17 size_t res = LIBC_NAMESPACE::wcslcat(dst, src, 3);18 ASSERT_TRUE(dst[0] == L'a');19 ASSERT_TRUE(dst[1] == L'b');20 ASSERT_TRUE(dst[2] == L'\0');21 // Should still return src length + dst length22 ASSERT_EQ(res, size_t(4));23 // Not enough space to copy d24 res = LIBC_NAMESPACE::wcslcat(dst, src, 4);25 ASSERT_TRUE(dst[0] == L'a');26 ASSERT_TRUE(dst[1] == L'b');27 ASSERT_TRUE(dst[2] == L'c');28 ASSERT_TRUE(dst[3] == L'\0');29 ASSERT_EQ(res, size_t(4));30}31 32TEST(LlvmLibcWCSLCatTest, Smaller) {33 const wchar_t *src = L"cd";34 wchar_t dst[7]{L"ab"};35 size_t res = LIBC_NAMESPACE::wcslcat(dst, src, 7);36 ASSERT_TRUE(dst[0] == L'a');37 ASSERT_TRUE(dst[1] == L'b');38 ASSERT_TRUE(dst[2] == L'c');39 ASSERT_TRUE(dst[3] == L'd');40 ASSERT_TRUE(dst[4] == L'\0');41 ASSERT_EQ(res, size_t(4));42}43 44TEST(LlvmLibcWCSLCatTest, SmallerNoOverwriteAfter0) {45 const wchar_t *src = L"cd";46 wchar_t dst[8]{L"ab\0\0efg"};47 size_t res = LIBC_NAMESPACE::wcslcat(dst, src, 8);48 ASSERT_TRUE(dst[0] == L'a');49 ASSERT_TRUE(dst[1] == L'b');50 ASSERT_TRUE(dst[2] == L'c');51 ASSERT_TRUE(dst[3] == L'd');52 ASSERT_TRUE(dst[4] == L'\0');53 ASSERT_TRUE(dst[5] == L'f');54 ASSERT_TRUE(dst[6] == L'g');55 ASSERT_TRUE(dst[7] == L'\0');56 ASSERT_EQ(res, size_t(4));57}58