425620ccdd
Reviewed By: #libc, ldionne Spies: daltenty, sdasgup3, ldionne, arichardson, MTC, ChuanqiXu, mehdi_amini, shauheen, antiagainst, nicolasvasilache, arpith-jacob, mgester, lucyrfox, aartbik, liufengdb, stephenneuendorffer, Joonsoo, grosul1, Kayjukh, jurahul, msifontes, tatianashp, rdzhabarov, teijeong, cota, dcaballe, Chia-hungDuan, wrengr, wenzhicui, arphaman, Mordante, miscco, Quuxplusone, smeenai, libcxx-commits Differential Revision: https://reviews.llvm.org/D110598
87 lines
2.7 KiB
C++
87 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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// UNSUPPORTED: c++03
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// XFAIL: LIBCXX-AIX-FIXME
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// <string>
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// basic_string<charT,traits,Allocator>&
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// operator=(basic_string<charT,traits,Allocator>&& str); // constexpr since C++20
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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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TEST_CONSTEXPR_CXX20 void
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test(S s1, S s2)
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{
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S s0 = s2;
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s1 = std::move(s2);
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LIBCPP_ASSERT(s1.__invariants());
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LIBCPP_ASSERT(s2.__invariants());
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assert(s1 == s0);
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assert(s1.capacity() >= s1.size());
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}
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TEST_CONSTEXPR_CXX20 bool test() {
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{
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typedef std::string S;
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test(S(), S());
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test(S("1"), S());
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test(S(), S("1"));
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test(S("1"), S("2"));
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test(S("1"), S("2"));
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test(S(),
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S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
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test(S("123456789"),
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S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
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S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
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"1234567890123456789012345678901234567890123456789012345678901234567890"),
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S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
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}
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{
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typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
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test(S(), S());
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test(S("1"), S());
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test(S(), S("1"));
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test(S("1"), S("2"));
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test(S("1"), S("2"));
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test(S(),
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S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
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test(S("123456789"),
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S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
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S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
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"1234567890123456789012345678901234567890123456789012345678901234567890"),
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S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
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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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{
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test();
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#if TEST_STD_VER > 17
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static_assert(test());
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#endif
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return 0;
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}
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