69 lines
1.5 KiB
C++
69 lines
1.5 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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// void reserve(); // Deprecated in C++20.
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// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
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#include <string>
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#include <stdexcept>
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#include <cassert>
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#include "test_macros.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(typename S::size_type min_cap, typename S::size_type erased_index)
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{
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S s(min_cap, 'a');
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s.erase(erased_index);
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assert(s.size() == erased_index);
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assert(s.capacity() >= min_cap); // Check that we really have at least this capacity.
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typename S::size_type old_cap = s.capacity();
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S s0 = s;
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s.reserve();
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LIBCPP_ASSERT(s.__invariants());
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assert(s == s0);
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assert(s.capacity() <= old_cap);
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assert(s.capacity() >= s.size());
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}
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bool test() {
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{
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typedef std::string S;
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{
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test<S>(0, 0);
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test<S>(10, 5);
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test<S>(100, 50);
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}
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}
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#if TEST_STD_VER >= 11
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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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{
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test<S>(0, 0);
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test<S>(10, 5);
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test<S>(100, 50);
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}
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}
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#endif
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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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return 0;
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}
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