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//===-- Unittests for strcat ----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "hdr/signal_macros.h"
#include "src/string/strcat.h"
#include "test/UnitTest/Test.h"
TEST(LlvmLibcStrCatTest, EmptyDest) {
const char *abc = "abc";
char dest[4];
dest[0] = '\0';
char *result = LIBC_NAMESPACE::strcat(dest, abc);
ASSERT_EQ(dest, result);
ASSERT_STREQ(dest, result);
ASSERT_STREQ(dest, abc);
}
TEST(LlvmLibcStrCatTest, NonEmptyDest) {
const char *abc = "abc";
char dest[7];
dest[0] = 'x';
dest[1] = 'y';
dest[2] = 'z';
dest[3] = '\0';
char *result = LIBC_NAMESPACE::strcat(dest, abc);
ASSERT_EQ(dest, result);
ASSERT_STREQ(dest, result);
ASSERT_STREQ(dest, "xyzabc");
}
#if defined(LIBC_ADD_NULL_CHECKS)
TEST(LlvmLibcStrCatTest, CrashOnNullPtr) {
ASSERT_DEATH([]() { LIBC_NAMESPACE::strcat(nullptr, nullptr); },
WITH_SIGNAL(-1));
}
#endif // defined(LIBC_ADD_NULL_CHECKS)
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