Python 单元测试在本地通过，但在比较日期时在 Jenkins 中失败

Question

The following test passes locally, because Locally it's EST:

    def test_get_local_ts(self):
        dt = Utils.get_local_ts().strftime('%Y-%m-%d')
        dt1 = datetime.now().strftime('%Y-%m-%d')
        self.assertEqual(dt, dt1)

But fails when running in a Jenkins pipeline.

Because Jenkins server is running on UTC time, but the method get_local_ts is returning the local time.

And so this error happens:

self.assertEqual(dt, dt1)

AssertionError: '2021-12-16' != '2021-12-17'

Also, this will only fail when running it after 7 PM EST, when UTC rolls over to next day.

How can I get this to pass locally and in Jenkins at any time?

Thanks!

Answer 1

If your unit tests involve datetime objects, then you should probably set the time zone as part of your test setup. A unit test should run under controlled conditions without depending on external factors.

https://docs.python.org/3/library/time.html#time.tzset