Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

OpenRA.Test/OpenRA.Game/ActionQueueTest.cs

@@ -0,0 +1,43 @@
+#region Copyright & License Information
+/*
+ * Copyright (c) The OpenRA Developers and Contributors
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using OpenRA.Primitives;
+
+namespace OpenRA.Test
+{
+	[TestFixture]
+	sealed class ActionQueueTest
+	{
+		[TestCase(TestName = "ActionQueue performs actions in order of time, then insertion order.")]
+		public void ActionsArePerformedOrderedByTimeThenByInsertionOrder()
+		{
+			var list = new List<int>();
+			var queue = new ActionQueue();
+			queue.Add(() => list.Add(1), 0);
+			queue.Add(() => list.Add(7), 2);
+			queue.Add(() => list.Add(8), 2);
+			queue.Add(() => list.Add(4), 1);
+			queue.Add(() => list.Add(2), 0);
+			queue.Add(() => list.Add(3), 0);
+			queue.Add(() => list.Add(9), 2);
+			queue.Add(() => list.Add(5), 1);
+			queue.Add(() => list.Add(6), 1);
+			queue.PerformActions(1);
+			queue.PerformActions(2);
+			queue.PerformActions(3);
+			if (!list.SequenceEqual([1, 2, 3, 4, 5, 6, 7, 8, 9]))
+				Assert.Fail("Actions were not performed in the correct order. Actual order was: " + string.Join(", ", list));
+		}
+	}
+}