add tests for reformatUtcTimestamp()

Author: KSDaemon

packages/cubejs-backend-shared/test/time.test.ts

@@ -8,6 +8,7 @@ import {
   utcToLocalTimeZone,
   addSecondsToLocalTimestamp,
   reformatInIsoLocal,
+  reformatUtcTimestamp,
 } from '../src';
 
 describe('timeSeries', () => {
@@ -529,3 +530,35 @@ describe('reformatInIsoLocal', () => {
     expect(reformatInIsoLocal(timestamp)).toBe(expected);
   });
 });
+
+describe('reformatUtcTimestamp', () => {
+  it('should format timestamp to YYYY-MM-DDTHH:mm:ss.SSS', () => {
+    expect(reformatUtcTimestamp('YYYY-MM-DDTHH:mm:ss.SSS', '2025-02-28T12:34:56Z'))
+      .toBe('2025-02-28T12:34:56.000');
+  });
+
+  it('should format timestamp to YYYY-MM-DDTHH:mm:ss', () => {
+    expect(reformatUtcTimestamp('YYYY-MM-DDTHH:mm:ss', '2025-02-28T12:34:56Z'))
+      .toBe('2025-02-28T12:34:56');
+  });
+
+  it('should format timestamp to YYYY-MM-DD HH:mm:ss.SSS', () => {
+    expect(reformatUtcTimestamp('YYYY-MM-DD HH:mm:ss.SSS', '2025-02-28T12:34:56Z'))
+      .toBe('2025-02-28 12:34:56.000');
+  });
+
+  it('should format timestamp to YYYY-MM-DD HH:mm:ss', () => {
+    expect(reformatUtcTimestamp('YYYY-MM-DD HH:mm:ss', '2025-02-28T12:34:56Z'))
+      .toBe('2025-02-28 12:34:56');
+  });
+
+  it('should handle timestamps with milliseconds', () => {
+    expect(reformatUtcTimestamp('YYYY-MM-DDTHH:mm:ss.SSS', '2025-02-28T12:34:56.789Z'))
+      .toBe('2025-02-28T12:34:56.789');
+  });
+
+  it('should handle timestamps without timezone info', () => {
+    expect(reformatUtcTimestamp('YYYY-MM-DDTHH:mm:ss.SSS', '2025-02-28 12:34:56'))
+      .toBe('2025-02-28T12:34:56.000');
+  });
+});