test(i18n): verify locale labels are non-empty

Author: AnshuS13

lib/i18n/badgeLabels.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from 'vitest';
-import { getLabels } from './badgeLabels';
+import { getLabels, labels } from './badgeLabels';
 
 describe('getLabels', () => {
   describe('supported locales', () => {
@@ -61,5 +61,13 @@ describe('getLabels', () => {
       expect(typeof labels.ANNUAL_SYNC_TOTAL).toBe('string');
       expect(typeof labels.PEAK_STREAK).toBe('string');
     });
+    it('ensures all locale labels are non-empty strings', () => {
+      for (const locale of Object.values(labels)) {
+        for (const value of Object.values(locale)) {
+          expect(typeof value).toBe('string');
+          expect(value.length).toBeGreaterThan(0);
+        }
+      }
+    });
   });
 });