forked from OSchip/llvm-project
90 lines
2.5 KiB
C++
90 lines
2.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <string>
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// basic_string(basic_string&& str, const Allocator& alloc);
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#include <string>
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#include <cassert>
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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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(S s0, const typename S::allocator_type& a)
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{
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S s1 = s0;
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S s2(std::move(s0), a);
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assert(s2.__invariants());
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assert(s0.__invariants());
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assert(s2 == s1);
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assert(s2.capacity() >= s2.size());
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assert(s2.get_allocator() == a);
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}
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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// #if _LIBCPP_STD_VER <= 14
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// _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value);
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// #else
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// _NOEXCEPT;
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// #endif
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int main()
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{
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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{
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typedef test_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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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()) == std::is_nothrow_move_constructible<A>::value), "" );
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#endif
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test(S(), A(3));
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test(S("1"), A(5));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A(7));
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}
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int alloc_count = test_alloc_base::alloc_count;
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{
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typedef test_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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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()) == std::is_nothrow_move_constructible<A>::value), "" );
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#endif
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S s1 ( "Twas brillig, and the slivy toves did gyre and gymbal in the wabe" );
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S s2 (std::move(s1), A(1));
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}
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assert ( test_alloc_base::alloc_count == alloc_count );
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#if TEST_STD_VER >= 11
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{
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typedef min_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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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()) == std::is_nothrow_move_constructible<A>::value), "" );
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#endif
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test(S(), A());
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test(S("1"), A());
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A());
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}
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#endif
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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}
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