Initial flame_lua_runtime package

test/runtime/commands/runtime_command_registry_test.dart

@@ -0,0 +1,65 @@
+import 'package:flame_lua_runtime/runtime/commands/runtime_command_registry.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('RuntimeCommandRegistry', () {
+    test('cancels handles by id, group and scope', () {
+      final registry = RuntimeCommandRegistry();
+      var idCancelled = false;
+      var groupCancelled = false;
+      var scopeCancelled = false;
+
+      registry.create(id: 'intro').addCancelCallback(() {
+        idCancelled = true;
+      });
+      registry.create(group: 'scene').addCancelCallback(() {
+        groupCancelled = true;
+      });
+      registry.create(scope: 'panel').addCancelCallback(() {
+        scopeCancelled = true;
+      });
+
+      registry
+        ..cancelId('intro')
+        ..cancelGroup('scene')
+        ..cancelScope('panel');
+
+      expect(idCancelled, isTrue);
+      expect(groupCancelled, isTrue);
+      expect(scopeCancelled, isTrue);
+      expect(registry.activeHandleCount, 0);
+    });
+
+    test('completed handles ignore later cancellation', () {
+      final registry = RuntimeCommandRegistry();
+      var cancelled = false;
+      final handle = registry.create(group: 'scene')
+        ..addCancelCallback(() {
+          cancelled = true;
+        });
+
+      handle.complete();
+      registry.cancelGroup('scene');
+
+      expect(cancelled, isFalse);
+      expect(registry.activeHandleCount, 0);
+    });
+
+    test('dispose cancels all handles', () {
+      final registry = RuntimeCommandRegistry();
+      var cancelCount = 0;
+
+      registry.create(id: 'a').addCancelCallback(() {
+        cancelCount++;
+      });
+      registry.create(group: 'b').addCancelCallback(() {
+        cancelCount++;
+      });
+
+      registry.dispose();
+
+      expect(cancelCount, 2);
+      expect(registry.activeHandleCount, 0);
+    });
+  });
+}