1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++98, c++03 10 11 // <string> 12 13 // basic_string(basic_string&& str, const Allocator& alloc); 14 15 #include <string> 16 #include <cassert> 17 18 #include "test_macros.h" 19 #include "test_allocator.h" 20 #include "min_allocator.h" 21 22 23 template <class S> 24 void 25 test(S s0, const typename S::allocator_type& a) 26 { 27 S s1 = s0; 28 S s2(std::move(s0), a); 29 LIBCPP_ASSERT(s2.__invariants()); 30 LIBCPP_ASSERT(s0.__invariants()); 31 assert(s2 == s1); 32 assert(s2.capacity() >= s2.size()); 33 assert(s2.get_allocator() == a); 34 } 35 36 37 int main() 38 { 39 { 40 typedef test_allocator<char> A; 41 typedef std::basic_string<char, std::char_traits<char>, A> S; 42 #if TEST_STD_VER > 14 43 static_assert((noexcept(S{})), "" ); 44 #elif TEST_STD_VER >= 11 45 static_assert((noexcept(S()) == std::is_nothrow_move_constructible<A>::value), "" ); 46 #endif 47 test(S(), A(3)); 48 test(S("1"), A(5)); 49 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A(7)); 50 } 51 52 int alloc_count = test_alloc_base::alloc_count; 53 { 54 typedef test_allocator<char> A; 55 typedef std::basic_string<char, std::char_traits<char>, A> S; 56 #if TEST_STD_VER > 14 57 static_assert((noexcept(S{})), "" ); 58 #elif TEST_STD_VER >= 11 59 static_assert((noexcept(S()) == std::is_nothrow_move_constructible<A>::value), "" ); 60 #endif 61 S s1 ( "Twas brillig, and the slivy toves did gyre and gymbal in the wabe" ); 62 S s2 (std::move(s1), A(1)); 63 } 64 assert ( test_alloc_base::alloc_count == alloc_count ); 65 { 66 typedef min_allocator<char> A; 67 typedef std::basic_string<char, std::char_traits<char>, A> S; 68 #if TEST_STD_VER > 14 69 static_assert((noexcept(S{})), "" ); 70 #elif TEST_STD_VER >= 11 71 static_assert((noexcept(S()) == std::is_nothrow_move_constructible<A>::value), "" ); 72 #endif 73 test(S(), A()); 74 test(S("1"), A()); 75 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A()); 76 } 77 } 78