Add game engine tests

BinaryObjectScanner.Test/GameEngine/RenderWareTests.cs

@@ -0,0 +1,22 @@
+using System.IO;
+using BinaryObjectScanner.GameEngine;
+using Xunit;
+
+namespace BinaryObjectScanner.Test.GameEngine
+{
+    public class RenderWareTests
+    {
+        [Fact]
+        public void CheckPortableExecutableTest()
+        {
+            string file = "filename";
+            SabreTools.Models.PortableExecutable.Executable model = new();
+            Stream source = new MemoryStream();
+            SabreTools.Serialization.Wrappers.PortableExecutable pex = new(model, source);
+
+            var checker = new RenderWare();
+            string? actual = checker.CheckExecutable(file, pex, includeDebug: false);
+            Assert.Null(actual);
+        }
+    }
+}