Nikolas Klauser e85018b7dd [libc++] Prepare string.{access, capacity, cons} tests for constexpr
Reviewed By: ldionne, #libc

Spies: libcxx-commits, arphaman

Differential Revision: https://reviews.llvm.org/D119123
2022-02-08 23:39:44 +01:00

77 lines
1.5 KiB
C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <string>
// size_type capacity() const;
#include <string>
#include <cassert>
#include "test_allocator.h"
#include "min_allocator.h"
#include "test_macros.h"
test_allocator_statistics alloc_stats;
template <class S>
TEST_CONSTEXPR_CXX20 void
test(S s)
{
alloc_stats.throw_after = 0;
#ifndef TEST_HAS_NO_EXCEPTIONS
try
#endif
{
while (s.size() < s.capacity())
s.push_back(typename S::value_type());
assert(s.size() == s.capacity());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
catch (...)
{
assert(false);
}
#endif
alloc_stats.throw_after = INT_MAX;
}
bool test() {
{
typedef std::basic_string<char, std::char_traits<char>, test_allocator<char> > S;
S s((test_allocator<char>(&alloc_stats)));
test(s);
s.assign(10, 'a');
s.erase(5);
test(s);
s.assign(100, 'a');
s.erase(50);
test(s);
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
S s;
assert(s.capacity() > 0);
}
#endif
return true;
}
int main(int, char**)
{
test();
#if TEST_STD_VER > 17
// static_assert(test());
#endif
return 0;
}