48 lines · cpp
1//===-- Unittests for wcscat ---------------------------------------------===//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/wchar_t.h"10#include "src/wchar/wcscat.h"11#include "test/UnitTest/Test.h"12 13TEST(LlvmLibcWCSCatTest, EmptyDest) {14 // Dest should be fully replaced with src.15 wchar_t dest[4] = {L'\0'};16 const wchar_t *src = L"abc";17 LIBC_NAMESPACE::wcscat(dest, src);18 ASSERT_TRUE(dest[0] == L'a');19 ASSERT_TRUE(dest[1] == L'b');20 ASSERT_TRUE(dest[2] == L'c');21 ASSERT_TRUE(dest[3] == L'\0');22}23 24TEST(LlvmLibcWCSCatTest, NonEmptyDest) {25 // Src should be appended on to dest.26 wchar_t dest[7] = {L'x', L'y', L'z', L'\0'};27 const wchar_t *src = L"abc";28 LIBC_NAMESPACE::wcscat(dest, src);29 ASSERT_TRUE(dest[0] == L'x');30 ASSERT_TRUE(dest[1] == L'y');31 ASSERT_TRUE(dest[2] == L'z');32 ASSERT_TRUE(dest[3] == L'a');33 ASSERT_TRUE(dest[4] == L'b');34 ASSERT_TRUE(dest[5] == L'c');35 ASSERT_TRUE(dest[6] == L'\0');36}37 38TEST(LlvmLibcWCSCatTest, EmptySrc) {39 // Dest should remain intact.40 wchar_t dest[4] = {L'x', L'y', L'z', L'\0'};41 const wchar_t *src = L"";42 LIBC_NAMESPACE::wcscat(dest, src);43 ASSERT_TRUE(dest[0] == L'x');44 ASSERT_TRUE(dest[1] == L'y');45 ASSERT_TRUE(dest[2] == L'z');46 ASSERT_TRUE(dest[3] == L'\0');47}48