formatter tests

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

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+import { describe, it, expect } from 'vitest';
+import { SkillLevelIconFormatter } from './SkillLevelIconFormatter';
+
+describe('SkillLevelIconFormatter', () => {
+  describe('getIcon', () => {
+    it('should return "🥉" for beginner level', () => {
+      expect(SkillLevelIconFormatter.getIcon('beginner')).toBe('🥉');
+    });
+
+    it('should return "🥈" for intermediate level', () => {
+      expect(SkillLevelIconFormatter.getIcon('intermediate')).toBe('🥈');
+    });
+
+    it('should return "🥇" for advanced level', () => {
+      expect(SkillLevelIconFormatter.getIcon('advanced')).toBe('🥇');
+    });
+
+    it('should return "👑" for expert level', () => {
+      expect(SkillLevelIconFormatter.getIcon('expert')).toBe('👑');
+    });
+
+    it('should return "🏁" for unknown level', () => {
+      expect(SkillLevelIconFormatter.getIcon('unknown')).toBe('🏁');
+    });
+
+    it('should return "🏁" for any other level', () => {
+      expect(SkillLevelIconFormatter.getIcon('pro')).toBe('🏁');
+      expect(SkillLevelIconFormatter.getIcon('master')).toBe('🏁');
+    });
+  });
+});