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//===-- Unittests for stpcpy ----------------------------------------------===//
//
// 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 "src/string/stpcpy.h"
#include "test/UnitTest/Test.h"
#include "src/string/string_utils.h"
TEST(LlvmLibcStpCpyTest, EmptySrc) {
const char *empty = "";
size_t src_size = __llvm_libc::internal::string_length(empty);
char dest[4] = {'a', 'b', 'c', '\0'};
char *result = __llvm_libc::stpcpy(dest, empty);
ASSERT_EQ(dest + src_size, result);
ASSERT_EQ(result[0], '\0');
ASSERT_STREQ(dest, empty);
}
TEST(LlvmLibcStpCpyTest, EmptyDest) {
const char *abc = "abc";
size_t src_size = __llvm_libc::internal::string_length(abc);
char dest[4];
char *result = __llvm_libc::stpcpy(dest, abc);
ASSERT_EQ(dest + src_size, result);
ASSERT_EQ(result[0], '\0');
ASSERT_STREQ(dest, abc);
}
TEST(LlvmLibcStpCpyTest, OffsetDest) {
const char *abc = "abc";
size_t src_size = __llvm_libc::internal::string_length(abc);
char dest[7] = {'x', 'y', 'z'};
char *result = __llvm_libc::stpcpy(dest + 3, abc);
ASSERT_EQ(dest + 3 + src_size, result);
ASSERT_EQ(result[0], '\0');
ASSERT_STREQ(dest, "xyzabc");
}
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