watchdog: add

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

UnitTests/watchdog.cpp

@@ -0,0 +1,32 @@
+/*
+	SPDX-License-Identifier: MIT
+	Copyright © 2023 Amebis
+*/
+
+#include "pch.hpp"
+
+using namespace std;
+#ifdef _WIN32
+using namespace Microsoft::VisualStudio::CppUnitTestFramework;
+#endif
+
+namespace UnitTests
+{
+	TEST_CLASS(watchdog)
+	{
+	public:
+		TEST_METHOD(test)
+		{
+			volatile bool wd_called = false;
+			stdex::watchdog<std::chrono::steady_clock> wd(
+				std::chrono::milliseconds(100), [&] { wd_called = true; });
+			for (int i = 0; i < 100; ++i) {
+				std::this_thread::sleep_for(std::chrono::milliseconds(10));
+				Assert::IsFalse(wd_called);
+				wd.reset();
+			}
+			std::this_thread::sleep_for(std::chrono::milliseconds(300));
+			Assert::IsTrue(wd_called);
+		}
+	};
+}