問題描述

我正在嘗試為我的燒瓶應用程序修補公共方法，但它似乎不起作用.

I'm trying to patch a public method for my flask application but it doesn't seem to work.

這是我在 mrss.feed_burner

def get_feed(env=os.environ):
   return 'something'

這就是我使用它的方式

@app.route("/feed")
    def feed():
        mrss_feed = get_feed(env=os.environ)
        response = make_response(mrss_feed)
        response.headers["Content-Type"] = "application/xml"

        return response

這是我沒有解析的測試.

And this is my test which it's not parsing.

def test_feed(self):
    with patch('mrss.feed_burner.get_feed', new=lambda: '<xml></xml>'):
        response = self.app.get('/feed')
        self.assertEquals('<xml></xml>', response.data)

推薦答案

我相信您的問題是您沒有在正確的命名空間中進行修補.請參閱 where_to_patch 文檔了解 unittest.mock.patch.

I believe your problem is that you're not patching in the right namespace. See where_to_patch documentation for unittest.mock.patch.

本質上，您正在修補 mrss.feed_burner 中 get_feed() 的定義，但您的視圖處理程序 feed() 已經有一個參考原始 mrss.feed_burner.get_feed().要解決此問題，您需要修補視圖文件中的引用.

Essentially, you're patching the definition of get_feed() in mrss.feed_burner but your view handler feed() already has a reference to the original mrss.feed_burner.get_feed(). To solve this problem, you need to patch the reference in your view file.

根據您在視圖函數中對 get_feed 的使用，我假設您正在像這樣導入 get_feed

Based on your usage of get_feed in your view function, I assume you're importing get_feed like so

view_file.py

view_file.py

from mrss.feed_burner import get_feed

如果是這樣，您應該像這樣修補 view_file.get_feed:

If so, you should be patching view_file.get_feed like so:

def test_feed(self):
    with patch('view_file.get_feed', new=lambda: '<xml></xml>'):
        ...

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