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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <string>
// basic_string<charT,traits,Allocator>&
// assign(const charT* s, size_type n);
#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, typename S::size_type n, S expected)
{
s.assign(str, n);
LIBCPP_ASSERT(s.__invariants());
assert(s == expected);
}
int main()
{
{
typedef std::string S;
test(S(), "", 0, S());
test(S(), "12345", 3, S("123"));
test(S(), "12345", 4, S("1234"));
test(S(), "12345678901234567890", 0, S());
test(S(), "12345678901234567890", 1, S("1"));
test(S(), "12345678901234567890", 3, S("123"));
test(S(), "12345678901234567890", 20, S("12345678901234567890"));
test(S("12345"), "", 0, S());
test(S("12345"), "12345", 5, S("12345"));
test(S("12345"), "1234567890", 10, S("1234567890"));
test(S("12345678901234567890"), "", 0, S());
test(S("12345678901234567890"), "12345", 5, S("12345"));
test(S("12345678901234567890"), "12345678901234567890", 20,
S("12345678901234567890"));
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
test(S(), "", 0, S());
test(S(), "12345", 3, S("123"));
test(S(), "12345", 4, S("1234"));
test(S(), "12345678901234567890", 0, S());
test(S(), "12345678901234567890", 1, S("1"));
test(S(), "12345678901234567890", 3, S("123"));
test(S(), "12345678901234567890", 20, S("12345678901234567890"));
test(S("12345"), "", 0, S());
test(S("12345"), "12345", 5, S("12345"));
test(S("12345"), "1234567890", 10, S("1234567890"));
test(S("12345678901234567890"), "", 0, S());
test(S("12345678901234567890"), "12345", 5, S("12345"));
test(S("12345678901234567890"), "12345678901234567890", 20,
S("12345678901234567890"));
}
#endif
{ // test assign to self
typedef std::string S;
S s_short = "123/";
S s_long = "Lorem ipsum dolor sit amet, consectetur/";
s_short.assign(s_short.data(), s_short.size());
assert(s_short == "123/");
s_short.assign(s_short.data() + 2, s_short.size() - 2);
assert(s_short == "3/");
s_long.assign(s_long.data(), s_long.size());
assert(s_long == "Lorem ipsum dolor sit amet, consectetur/");
s_long.assign(s_long.data() + 2, 8 );
assert(s_long == "rem ipsu");
}
}
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