pointer.pass.cpp
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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <string>
// basic_string<charT,traits,Allocator>& assign(const charT* s);
#include <string>
#include <stdexcept>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
template <class S>
void
test(S s, const typename S::value_type* str, S expected)
{
s.assign(str);
LIBCPP_ASSERT(s.__invariants());
assert(s == expected);
}
int main(int, char**)
{
{
typedef std::string S;
test(S(), "", S());
test(S(), "12345", S("12345"));
test(S(), "12345678901234567890", S("12345678901234567890"));
test(S("12345"), "", S());
test(S("12345"), "12345", S("12345"));
test(S("12345"), "1234567890", S("1234567890"));
test(S("12345678901234567890"), "", S());
test(S("12345678901234567890"), "12345", S("12345"));
test(S("12345678901234567890"), "12345678901234567890",
S("12345678901234567890"));
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
test(S(), "", S());
test(S(), "12345", S("12345"));
test(S(), "12345678901234567890", S("12345678901234567890"));
test(S("12345"), "", S());
test(S("12345"), "12345", S("12345"));
test(S("12345"), "1234567890", S("1234567890"));
test(S("12345678901234567890"), "", S());
test(S("12345678901234567890"), "12345", S("12345"));
test(S("12345678901234567890"), "12345678901234567890",
S("12345678901234567890"));
}
#endif
{ // test assignment to self
typedef std::string S;
S s_short = "123/";
S s_long = "Lorem ipsum dolor sit amet, consectetur/";
s_short.assign(s_short.c_str());
assert(s_short == "123/");
s_short.assign(s_short.c_str() + 2);
assert(s_short == "3/");
s_long.assign(s_long.c_str() + 30);
assert(s_long == "nsectetur/");
}
return 0;
}