98 lines
2.7 KiB
C++
98 lines
2.7 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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// <string>
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// explicit basic_string(const Allocator& a = Allocator());
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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#include "test_allocator.h"
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#include "min_allocator.h"
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template <class S>
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void
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test()
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{
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{
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#if TEST_STD_VER > 14
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static_assert((noexcept(S{})), "" );
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#elif TEST_STD_VER >= 11
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static_assert((noexcept(S()) == noexcept(typename S::allocator_type())), "" );
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#endif
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S s;
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LIBCPP_ASSERT(s.__invariants());
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assert(s.data());
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assert(s.size() == 0);
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assert(s.capacity() >= s.size());
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assert(s.get_allocator() == typename S::allocator_type());
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}
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{
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#if TEST_STD_VER > 14
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static_assert((noexcept(S{typename S::allocator_type{}})), "" );
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#elif TEST_STD_VER >= 11
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static_assert((noexcept(S(typename S::allocator_type())) == std::is_nothrow_copy_constructible<typename S::allocator_type>::value), "" );
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#endif
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S s(typename S::allocator_type(5));
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LIBCPP_ASSERT(s.__invariants());
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assert(s.data());
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assert(s.size() == 0);
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assert(s.capacity() >= s.size());
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assert(s.get_allocator() == typename S::allocator_type(5));
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}
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}
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#if TEST_STD_VER >= 11
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template <class S>
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void
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test2()
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{
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{
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#if TEST_STD_VER > 14
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static_assert((noexcept(S{})), "" );
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#elif TEST_STD_VER >= 11
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static_assert((noexcept(S()) == noexcept(typename S::allocator_type())), "" );
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#endif
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S s;
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LIBCPP_ASSERT(s.__invariants());
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assert(s.data());
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assert(s.size() == 0);
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assert(s.capacity() >= s.size());
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assert(s.get_allocator() == typename S::allocator_type());
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}
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{
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#if TEST_STD_VER > 14
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static_assert((noexcept(S{typename S::allocator_type{}})), "" );
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#elif TEST_STD_VER >= 11
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static_assert((noexcept(S(typename S::allocator_type())) == std::is_nothrow_copy_constructible<typename S::allocator_type>::value), "" );
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#endif
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S s(typename S::allocator_type{});
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LIBCPP_ASSERT(s.__invariants());
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assert(s.data());
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assert(s.size() == 0);
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assert(s.capacity() >= s.size());
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assert(s.get_allocator() == typename S::allocator_type());
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}
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}
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#endif
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int main(int, char**)
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{
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test<std::basic_string<char, std::char_traits<char>, test_allocator<char> > >();
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#if TEST_STD_VER >= 11
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test2<std::basic_string<char, std::char_traits<char>, min_allocator<char> > >();
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test2<std::basic_string<char, std::char_traits<char>, explicit_allocator<char> > >();
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#endif
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return 0;
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}
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