如何导入 pytest monkeypatch 插件？

Question

I want to use the pytest monkeypatch plugin, but I can't figure out how to import it. I've tried:

• import monkeypath
• import pytest.monkeypatch
• from pytest import monkeypatch

Answer 1

It's not a plugin, it's a built-in pytest fixture .

In a nutshell, that means you simply write a test with a monkeypatch argument, and the test will get the monkeypatch object as that argument.

The page you linked has a simple example:

def test_some_interaction(monkeypatch):
    monkeypatch.setattr("os.getcwd", lambda: "/")

Answer 2

Just to confirm Eric Fulmer 's comment, if you do happen to want to use MonkeyPatch from within Python for whatever reason, it worked for me like this (based on The Compiler 's answer)

from _pytest.monkeypatch import MonkeyPatch

def test_some_interaction(monkeypatch):
    monkeypatch.setattr("os.getcwd", lambda: "/")

test_some_interaction(MonkeyPatch())