Mocking datetime in Python

test_your_module.py

from datetime import datetime

from pytest_mock import MockerFixture


def test_your_function(mocker: MockerFixture):
    now = datetime.strptime('2024-01-02 12:34:56', '%Y-%m-%d %H:%M:%S')
    mock = mocker.MagicMock(wraps=datetime)
    mock.now.return_value = now
    mocker.patch('src.your_module.datetime', new=mock)
    # Write your testing code.