fix(core): Ensure waiting executions account for workflow timezone (#8340)

packages/core/test/utils.test.ts

@@ -0,0 +1,35 @@
+import { toUtcDate } from '@/utils';
+
+describe('utils', () => {
+	describe('toUtcDate()', () => {
+		test('should convert to UTC date by adding', () => {
+			const originalDate = new Date('2020-01-01T00:00:00.000Z');
+			const timezone = 'America/New_York'; // +5 to reach Z
+
+			const utcDate = toUtcDate(originalDate, timezone);
+
+			expect(utcDate).toBeInstanceOf(Date);
+			expect(utcDate.toISOString()).toBe('2020-01-01T05:00:00.000Z');
+		});
+
+		test('should convert to UTC date by subtracting', () => {
+			const originalDate = new Date('2020-01-01T00:00:00.000Z');
+			const timezone = 'Europe/Paris'; // -1 to reach Z
+
+			const utcDate = toUtcDate(originalDate, timezone);
+
+			expect(utcDate).toBeInstanceOf(Date);
+			expect(utcDate.toISOString()).toBe('2019-12-31T23:00:00.000Z');
+		});
+
+		test('should convert to UTC date when already UTC', () => {
+			const originalDate = new Date('2020-01-01T00:00:00.000Z');
+			const timezone = 'UTC'; // already at Z
+
+			const utcDate = toUtcDate(originalDate, timezone);
+
+			expect(utcDate).toBeInstanceOf(Date);
+			expect(utcDate.toISOString()).toBe('2020-01-01T00:00:00.000Z');
+		});
+	});
+});