to_string.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
//
//===----------------------------------------------------------------------===//
// test:
// template <class charT, class traits, class Allocator>
// basic_string<charT, traits, Allocator>
// to_string(charT zero = charT('0'), charT one = charT('1')) const;
//
// template <class charT, class traits>
// basic_string<charT, traits, allocator<charT> > to_string() const;
//
// template <class charT>
// basic_string<charT, char_traits<charT>, allocator<charT> > to_string() const;
//
// basic_string<char, char_traits<char>, allocator<char> > to_string() const;
#include <bitset>
#include <string>
#include <cstdlib>
#include <cassert>
#include "test_macros.h"
#if defined(TEST_COMPILER_CLANG)
#pragma clang diagnostic ignored "-Wtautological-compare"
#elif defined(TEST_COMPILER_C1XX)
#pragma warning(disable: 6294) // Ill-defined for-loop: initial condition does not satisfy test. Loop body not executed.
#endif
template <std::size_t N>
std::bitset<N>
make_bitset()
{
std::bitset<N> v;
for (std::size_t i = 0; i < N; ++i)
v[i] = static_cast<bool>(std::rand() & 1);
return v;
}
template <std::size_t N>
void test_to_string()
{
{
std::bitset<N> v = make_bitset<N>();
{
std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >();
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
{
std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t> >();
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
{
std::string s = v.template to_string<char>();
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
{
std::string s = v.to_string();
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
}
{
std::bitset<N> v = make_bitset<N>();
{
std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >('0');
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
{
std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t> >('0');
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
{
std::string s = v.template to_string<char>('0');
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
{
std::string s = v.to_string('0');
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
}
{
std::bitset<N> v = make_bitset<N>();
{
std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >('0', '1');
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
{
std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t> >('0', '1');
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
{
std::string s = v.template to_string<char>('0', '1');
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
{
std::string s = v.to_string('0', '1');
for (std::size_t i = 0; i < N; ++i)
if (v[i])
assert(s[N - 1 - i] == '1');
else
assert(s[N - 1 - i] == '0');
}
}
}
int main(int, char**)
{
test_to_string<0>();
test_to_string<1>();
test_to_string<31>();
test_to_string<32>();
test_to_string<33>();
test_to_string<63>();
test_to_string<64>();
test_to_string<65>();
test_to_string<1000>();
return 0;
}