n8n/packages/workflow/test/Cron.test.ts

import { toCronExpression } from '@/Cron';

describe('Cron', () => {
	describe('toCronExpression', () => {
		test('should generate a valid cron for `everyMinute` triggers', () => {
			const expression = toCronExpression({
				mode: 'everyMinute',
			});
			expect(expression).toMatch(/^[1-6]?[0-9] \* \* \* \* \*$/);
		});

		test('should generate a valid cron for `everyHour` triggers', () => {
			const expression = toCronExpression({
				mode: 'everyHour',
				minute: 11,
			});
			expect(expression).toMatch(/^[1-6]?[0-9] 11 \* \* \* \*$/);
		});

		test('should generate a valid cron for `everyX[minutes]` triggers', () => {
			const expression = toCronExpression({
				mode: 'everyX',
				unit: 'minutes',
				value: 42,
			});
			expect(expression).toMatch(/^[1-6]?[0-9] \*\/42 \* \* \* \*$/);
		});

		test('should generate a valid cron for `everyX[hours]` triggers', () => {
			const expression = toCronExpression({
				mode: 'everyX',
				unit: 'hours',
				value: 3,
			});
			expect(expression).toMatch(/^[1-6]?[0-9] 0 \*\/3 \* \* \*$/);
		});

		test('should generate a valid cron for `everyDay` triggers', () => {
			const expression = toCronExpression({
				mode: 'everyDay',
				hour: 13,
				minute: 17,
			});
			expect(expression).toMatch(/^[1-6]?[0-9] 17 13 \* \* \*$/);
		});

		test('should generate a valid cron for `everyWeek` triggers', () => {
			const expression = toCronExpression({
				mode: 'everyWeek',
				hour: 13,
				minute: 17,
				weekday: 4,
			});
			expect(expression).toMatch(/^[1-6]?[0-9] 17 13 \* \* 4$/);
		});

		test('should generate a valid cron for `everyMonth` triggers', () => {
			const expression = toCronExpression({
				mode: 'everyMonth',
				hour: 13,
				minute: 17,
				dayOfMonth: 12,
			});
			expect(expression).toMatch(/^[1-6]?[0-9] 17 13 12 \* \*$/);
		});

		test('should trim custom cron expressions', () => {
			const expression = toCronExpression({
				mode: 'custom',
				cronExpression: ' 0 9-17 * * * ',
			});
			expect(expression).toEqual('0 9-17 * * *');
		});
	});
});