有条件地运行带有或不带有模拟的测试 [英] Conditionally run tests with or without mocks with jest

问题描述

我正在使用模拟程序运行测试，以便测试不会总是命中API.但是，我还想添加一个条件，以便可以使用相同的测试来测试API.

I'm running tests with mocks so that the tests don't always hit APIs. I however also want to add a condition, so that I can use the same test to tests the APIs.

但是，当我添加一个条件时，无论条件是true还是false，它都将忽略它并且永远不会应用模拟.

When I however add a condition, it ignores it and never applies the mocks no matter if the condition is true or false.

import config from 'config';
if(!config.test.useNetwork) {
    jest.mock('api/companies');
    jest.mock('api/articles');
}

import { searchCompany } from 'api/companies';
...

两个问题:

1. 关于如何添加条件模拟的任何想法?我认为模拟永远不会应用，因为jest.mock可能需要在任何导入之前被调用?
2. 通过网络进行测试的惯例是什么?如果仅使用模拟，则实际上只是在测试模拟，而不是网络请求代码.但是，如果我不使用模拟程序，那我就不必要点击API.

1. Any idea for how to add conditional mocks? I think mocks never apply because jest.mock might need to be called before any imports?
2. What's the convention for testing over the network? If I just use mocks, I'm really just testing the mocks, and not the network request code. But if I don't use mocks I'm unnecessarily hitting the API.

推荐答案

一个:

是，jest.mock()是悬挂在代码块的顶部".但是，未提升jest.doMock.这样，您就可以完成您想要的事情:

Yes, jest.mock() is "hoisted to the top of the code block". However, jest.doMock is not hoisted. So, you can accomplish what you want thus:

const config = require('./config').default;
if(!config.test.useNetwork) {
    jest.doMock('api/companies');
    jest.doMock('api/articles');
}

const { searchCompany } = require('api/companies');

两个:

这是一个有争议的问题.它不适合StackOverflow，我也不会碰它

That's a controversial question. It isn't suited for StackOverflow and I'm not touching it lol

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