add tests

Author: mythz

MyApp.Client/lib/utils.test.ts

@@ -0,0 +1,26 @@
+import { describe, it, expect } from 'vitest'
+import { formatCurrency, formatDate, dateInputFormat } from './utils'
+
+describe('utils', () => {
+  describe('formatCurrency', () => {
+    it('should format number as USD currency', () => {
+      expect(formatCurrency(100)).toBe('$100.00')
+      expect(formatCurrency(1234.56)).toBe('$1,234.56')
+    })
+
+    it('should return empty string for falsy values', () => {
+      expect(formatCurrency(undefined)).toBe('')
+      expect(formatCurrency(0)).toBe('')
+    })
+  })
+
+  describe('dateInputFormat', () => {
+    it('should format date with dashes', () => {
+      const date = new Date('2025-11-11T00:00:00Z')
+      const result = dateInputFormat(date)
+      // Result will be in format like "11-11-2025" or "2025-11-11" depending on locale
+      expect(result).toMatch(/\d{1,4}-\d{1,2}-\d{1,4}/)
+    })
+  })
+})
+