135 lines
4.3 KiB
C++
135 lines
4.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// test:
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// template <class charT, class traits, class Allocator>
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// basic_string<charT, traits, Allocator>
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// to_string(charT zero = charT('0'), charT one = charT('1')) const; // constexpr since C++23
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//
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// template <class charT, class traits>
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// basic_string<charT, traits, allocator<charT> > to_string() const; // constexpr since C++23
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//
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// template <class charT>
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// basic_string<charT, char_traits<charT>, allocator<charT> > to_string() const; // constexpr since C++23
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//
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// basic_string<char, char_traits<char>, allocator<char> > to_string() const; // constexpr since C++23
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#include <bitset>
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#include <cassert>
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#include <cstddef>
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#include <memory> // for std::allocator
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#include <string>
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#include <vector>
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#include "../bitset_test_cases.h"
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#include "test_macros.h"
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template <class CharT, std::size_t N>
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TEST_CONSTEXPR_CXX23 void check_equal(std::basic_string<CharT> const& s, std::bitset<N> const& b, CharT zero, CharT one) {
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assert(s.size() == b.size());
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for (std::size_t i = 0; i < b.size(); ++i) {
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if (b[i]) {
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assert(s[b.size() - 1 - i] == one);
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} else {
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assert(s[b.size() - 1 - i] == zero);
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}
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}
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}
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template <std::size_t N>
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TEST_CONSTEXPR_CXX23 bool test_to_string() {
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std::vector<std::bitset<N> > const cases = get_test_cases<N>();
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for (std::size_t c = 0; c != cases.size(); ++c) {
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std::bitset<N> const v = cases[c];
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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{
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std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >();
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check_equal(s, v, L'0', L'1');
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}
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{
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std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t> >();
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check_equal(s, v, L'0', L'1');
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}
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#endif
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{
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std::string s = v.template to_string<char>();
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check_equal(s, v, '0', '1');
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}
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{
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std::string s = v.to_string();
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check_equal(s, v, '0', '1');
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}
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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{
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std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >('0');
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check_equal(s, v, L'0', L'1');
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}
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{
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std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t> >('0');
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check_equal(s, v, L'0', L'1');
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}
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#endif
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{
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std::string s = v.template to_string<char>('0');
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check_equal(s, v, '0', '1');
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}
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{
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std::string s = v.to_string('0');
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check_equal(s, v, '0', '1');
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}
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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{
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std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >('0', '1');
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check_equal(s, v, L'0', L'1');
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}
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{
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std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t> >('0', '1');
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check_equal(s, v, L'0', L'1');
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}
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#endif
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{
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std::string s = v.template to_string<char>('0', '1');
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check_equal(s, v, '0', '1');
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}
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{
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std::string s = v.to_string('0', '1');
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check_equal(s, v, '0', '1');
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}
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{
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std::string s = v.to_string('x', 'y');
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check_equal(s, v, 'x', 'y');
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}
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}
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return true;
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}
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int main(int, char**) {
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test_to_string<0>();
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test_to_string<1>();
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test_to_string<31>();
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test_to_string<32>();
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test_to_string<33>();
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test_to_string<63>();
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test_to_string<64>();
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test_to_string<65>();
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test_to_string<1000>(); // not in constexpr because of constexpr evaluation step limits
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#if TEST_STD_VER > 20
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static_assert(test_to_string<0>());
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static_assert(test_to_string<1>());
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static_assert(test_to_string<31>());
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static_assert(test_to_string<32>());
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static_assert(test_to_string<33>());
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static_assert(test_to_string<63>());
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static_assert(test_to_string<64>());
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static_assert(test_to_string<65>());
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#endif
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return 0;
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}
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