//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// Starting with C++20 the spaceship operator was included. This tests
// comparison in that context, thus doesn't support older language versions.
// These are tested per operator.
// UNSUPPORTED: c++03, c++11, c++14, c++17
// <string>
// template<class charT, class traits, class Allocator>
// see below operator<=>(const basic_string<charT, traits, Allocator>& lhs,
// const basic_string<charT, traits, Allocator>& rhs) noexcept;
// template<class charT, class traits, class Allocator>
// see below operator<=>(const basic_string<charT, traits, Allocator>& lhs,
// const charT* rhs);
#include <string>
#include <array>
#include <cassert>
#include <string_view>
#include "constexpr_char_traits.h"
#include "make_string.h"
#include "test_comparisons.h"
#include "test_macros.h"
#define STR(S) MAKE_STRING(CharT, S)
template <class T, class Ordering = std::strong_ordering>
constexpr void test() {
AssertOrderAreNoexcept<T>();
AssertOrderReturn<Ordering, T>();
using CharT = typename T::value_type;
AssertOrderReturn<Ordering, T, const CharT*>();
// sorted values
std::array v{
STR(""),
STR("abc"),
STR("abcdef"),
STR("acb"),
};
// sorted values with embedded NUL character
std::array vn{
STR("abc"),
STR("abc\0"),
STR("abc\0def"),
STR("acb\0"),
};
static_assert(v.size() == vn.size());
for (std::size_t i = 0; i < v.size(); ++i) {
for (std::size_t j = 0; j < v.size(); ++j) {
assert(testOrder(v[i], v[j], i == j ? Ordering::equivalent : i < j ? Ordering::less : Ordering::greater));
assert(testOrder(
v[i],
std::basic_string<CharT>{v[j]}.c_str(),
i == j ? Ordering::equivalent
: i < j ? Ordering::less
: Ordering::greater));
// NUL test omitted for c-strings since it will fail.
assert(testOrder(vn[i], vn[j], i == j ? Ordering::equivalent : i < j ? Ordering::less : Ordering::greater));
}
}
}
constexpr bool test_all_types() {
test<std::string>();
test<std::basic_string<char, constexpr_char_traits<char>>, std::weak_ordering>();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<std::wstring>();
test<std::basic_string<wchar_t, constexpr_char_traits<wchar_t>>, std::weak_ordering>();
#endif
test<std::u8string>();
test<std::basic_string<char8_t, constexpr_char_traits<char8_t>>, std::weak_ordering>();
test<std::u16string>();
test<std::basic_string<char16_t, constexpr_char_traits<char16_t>>, std::weak_ordering>();
test<std::u32string>();
test<std::basic_string<char32_t, constexpr_char_traits<char32_t>>, std::weak_ordering>();
return true;
}
int main(int, char**) {
test_all_types();
static_assert(test_all_types());
return 0;
}