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/** * Tests for the helper functions */ const assert = require('assert'); const { formatDate, capitalize } = require('../src/utils/helpers'); const { main } = require('../src/index'); // Test the formatDate function describe('formatDate', () => { it('should format a date to ISO string', () => { const testDate = new Date('2023-01-01T12:00:00Z'); const result = formatDate(testDate); assert.strictEqual(result, '2023-01-01T12:00:00.000Z'); }); }); // Test the capitalize function describe('capitalize', () => { it('should capitalize the first letter of a string', () => { const result = capitalize('hello'); assert.strictEqual(result, 'Hello'); }); it('should handle empty strings', () => { const result = capitalize(''); assert.strictEqual(result, ''); }); it('should handle null inputs', () => { const result = capitalize(null); assert.strictEqual(result, ''); }); }); // Test the main function describe('main', () => { it('should return a formatted date string', () => { const result = main(); // Verify the result is a string and matches ISO format assert(typeof result === 'string'); assert(/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}.\d{3}Z$/.test(result)); }); });