do to formatters

apps/website/lib/formatters/DashboardLeaguePositionFormatter.test.ts

@@ -0,0 +1,30 @@
+import { describe, expect, it } from 'vitest';
+import { DashboardLeaguePositionDisplay } from './DashboardLeaguePositionFormatter';
+
+describe('DashboardLeaguePositionDisplay', () => {
+  describe('happy paths', () => {
+    it('should format position correctly', () => {
+      expect(DashboardLeaguePositionDisplay.format(1)).toBe('#1');
+      expect(DashboardLeaguePositionDisplay.format(5)).toBe('#5');
+      expect(DashboardLeaguePositionDisplay.format(100)).toBe('#100');
+    });
+
+    it('should handle null values', () => {
+      expect(DashboardLeaguePositionDisplay.format(null)).toBe('-');
+    });
+
+    it('should handle undefined values', () => {
+      expect(DashboardLeaguePositionDisplay.format(undefined)).toBe('-');
+    });
+  });
+
+  describe('edge cases', () => {
+    it('should handle position 0', () => {
+      expect(DashboardLeaguePositionDisplay.format(0)).toBe('#0');
+    });
+
+    it('should handle large positions', () => {
+      expect(DashboardLeaguePositionDisplay.format(999)).toBe('#999');
+    });
+  });
+});