Make space for and add macOS unit testing stub project

Signed-off-by: Simon Rozman <simon@rozman.si>

UnitTests/ring.cpp

@@ -1,55 +0,0 @@
-/*
-	SPDX-License-Identifier: MIT
-	Copyright © 2023 Amebis
-*/
-
-#include "pch.h"
-
-using namespace std;
-using namespace Microsoft::VisualStudio::CppUnitTestFramework;
-
-namespace UnitTests
-{
-	constexpr size_t capacity = 50;
-
-	TEST_CLASS(ring)
-	{
-	public:
-		TEST_METHOD(test)
-		{
-			using ring_t = stdex::ring<int, capacity>;
-			ring_t ring;
-			thread writer([](_Inout_ ring_t& ring)
-				{
-					int seed = 0;
-					for (size_t retries = 1000; retries--;) {
-						for (auto to_write = static_cast<size_t>(static_cast<uint64_t>(::rand()) * capacity / 5 / RAND_MAX); to_write;) {
-							int* ptr; size_t num_write;
-							tie(ptr, num_write) = ring.back();
-							if (to_write < num_write)
-								num_write = to_write;
-							for (size_t i = 0; i < num_write; i++)
-								ptr[i] = seed++;
-							ring.push(num_write);
-							to_write -= num_write;
-						}
-					}
-					ring.quit();
-				}, ref(ring));
-
-			int seed = 0;
-			for (;;) {
-				int* ptr; size_t num_read;
-				tie(ptr, num_read) = ring.front();
-				if (!ptr) _Unlikely_
-					break;
-				if (num_read > 7)
-					num_read = 7;
-				for (size_t i = 0; i < num_read; ++i)
-					Assert::AreEqual(seed++, ptr[i]);
-				ring.pop(num_read);
-			}
-			writer.join();
-		}
-	};
-}