Differential D47360 Diff 219818 test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_with_initial_size.pass.cpp

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test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_with_initial_size.pass.cpp

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				//===----------------------------------------------------------------------===//
				//
				// The LLVM Compiler Infrastructure
				//
				// This file is dual licensed under the MIT and the University of Illinois Open
				// Source Licenses. See LICENSE.TXT for details.
				//
				//===----------------------------------------------------------------------===//

				// UNSUPPORTED: c++98, c++03

				// <memory_resource>

				// class monotonic_buffer_resource

				#include <memory_resource>
				#include <cassert>

				#include "count_new.h"

				void test(size_t initial_buffer_size)
				{
				globalMemCounter.reset();

				std::pmr::monotonic_buffer_resource mono1(
				initial_buffer_size,
				std::pmr::new_delete_resource()
				);
				assert(globalMemCounter.checkNewCalledEq(0));

				mono1.allocate(1, 1);
				assert(globalMemCounter.checkNewCalledEq(1));
				assert(globalMemCounter.last_new_size >= initial_buffer_size);

				mono1.allocate(initial_buffer_size - 1, 1);
				assert(globalMemCounter.checkNewCalledEq(1));
				}

				int main()
				{
				test(1);
				test(8);
				test(10);
				test(100);
				test(256);
				test(1000);
				test(1024);
				test(1000000);
				assert(globalMemCounter.checkOutstandingNewEq(0));
				}