init

test/widget_test.dart

@@ -0,0 +1,24 @@
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:arcx/features/scoring/application/score_math.dart';
+
+void main() {
+  group('ScoreMath', () {
+    test('center hit scores 10', () {
+      expect(ScoreMath.scoreFor(0, 0), 10);
+    });
+
+    test('outer edge scores low', () {
+      expect(ScoreMath.scoreFor(0.95, 0), 1);
+    });
+
+    test('beyond radius is a miss (0)', () {
+      expect(ScoreMath.scoreFor(1.2, 0), 0);
+    });
+
+    test('distance from center is non-negative', () {
+      expect(ScoreMath.distance(0, 0), 0);
+      expect(ScoreMath.distance(1, 0), closeTo(1, 0.0001));
+    });
+  });
+}