如何模拟 http.Client Do 方法 [英] How to mock http.Client Do method

问题描述

我正在尝试寻找一种解决方案来编写测试和模拟 HTTP 响应.在我接受接口的函数中:

I'm trying to find a solution to write test and mock HTTP response. In my function where I accept interface:

type HttpClient interface {
    Do(req *http.Request) (*http.Response, error)
}

我使用基本身份验证发出 http 获取请求

I makes http get request with base auth

func GetOverview(client HttpClient, overview *Overview) (*Overview, error) {

    request, err := http.NewRequest("GET", fmt.Sprintf("%s:%s/api/overview", overview.Config.Url, overview.Config.Port), nil)
    if (err != nil) {
        log.Println(err)
    }
    request.SetBasicAuth(overview.Config.User, overview.Config.Password)
    resp, err := client.Do(request)

如何模拟这个 HttpClient?我正在寻找模拟库，例如:https://github.com/h2non/gock但只有获取和发布的模拟

How can I mock this HttpClient? I'm looking for mock library, for instance: https://github.com/h2non/gock but there is only mock for Get and Post

也许我应该换一种方式.我会很感激你的建议

Maybe I should do it in a different way. I'll be grateful for advice

推荐答案

任何具有与您在接口中的签名匹配的方法的结构都将实现该接口.例如，您可以创建一个结构 ClientMock

Any struct with a method matching the signature you have in your interface will implement the interface. For example, you could create a struct ClientMock

type ClientMock struct {
}

用方法

func (c *ClientMock) Do(req *http.Request) (*http.Response, error) {
    return &http.Response{}, nil
}

然后您可以将此 ClientMock 结构体注入到您的 GetOverview 函数中.这里是 Go Playground 中的一个示例.

You could then inject this ClientMock struct into your GetOverview func. Here's an example in the Go Playground.

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