我需要测试使用 datetime.datetime.now()
的函数.最简单的方法是什么?
I need to test functions which uses datetime.datetime.now()
. What is the easiest way to do this?
你需要monkeypatch datetime.now 函数.在下面的示例中,我正在创建可以稍后在其他测试中重复使用的夹具:
You need to monkeypatch datetime.now function. In example below, I'm creating fixture which I can re-use later in other tests:
import datetime
import pytest
FAKE_TIME = datetime.datetime(2020, 12, 25, 17, 5, 55)
@pytest.fixture
def patch_datetime_now(monkeypatch):
class mydatetime:
@classmethod
def now(cls):
return FAKE_TIME
monkeypatch.setattr(datetime, 'datetime', mydatetime)
def test_patch_datetime(patch_datetime_now):
assert datetime.datetime.now() == FAKE_TIME
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