Add NAZARA_DEFER and CallOnExit tests

Author: SirLynix

include/NazaraUtils/CallOnExit.hpp

@@ -10,6 +10,8 @@
 #include <NazaraUtils/Prerequisites.hpp>
 #include <optional>
 
+#define NAZARA_DEFER(expr) Nz::CallOnExit NazaraSuffixMacro(defer_, __LINE__)([&] { expr })
+
 namespace Nz
 {
 	template<typename F>

tests/src/CallOnExitTests.cpp

@@ -0,0 +1,47 @@
+#include <NazaraUtils/CallOnExit.hpp>
+#include <catch2/catch_test_macros.hpp>
+
+SCENARIO("CallOnExit", "[CallOnExit]")
+{
+	WHEN("Checking if CallOnExit is called at end of scope")
+	{
+		bool called = false;
+		{
+			Nz::CallOnExit callOnExit([&]{ called = true; });
+			CHECK_FALSE(called);
+		}
+		CHECK(called);
+	}
+
+	WHEN("Checking if CallOnExit is called when reset")
+	{
+		bool called = false;
+		{
+			Nz::CallOnExit callOnExit([&] { called = true; });
+			CHECK_FALSE(called);
+			callOnExit.Reset();
+		}
+		CHECK_FALSE(called);
+	}
+
+	WHEN("Checking that CallOnExit is still called only once when CallAndReset is used")
+	{
+		unsigned int callCount = 0;
+		{
+			Nz::CallOnExit callOnExit([&] { callCount++; });
+			CHECK(callCount == 0);
+			callOnExit.CallAndReset();
+		}
+		CHECK(callCount == 1);
+	}
+
+	WHEN("Testing NAZARA_DEFER")
+	{
+		bool called = false;
+		{
+			NAZARA_DEFER({ called = true; });
+			CHECK_FALSE(called);
+		}
+		CHECK(called);
+	}
+}