Node.js的HTTP模擬和預期測試庫：Nock

Nock 是一個Node.js 平臺的 HTTP 模擬和預期測試庫 。可用于在隔離的情況下測試執行HTTP請求模塊。

For instance, if a module performs HTTP requests to a CouchDB server or makes HTTP requests to the Amazon API, you can test that module in isolation.

示例代碼：

var nock = require('nock');

var couchdb = nock('http://myapp.iriscouch.com')
                .get('/users/1')
                .reply(200, {
                  _id: '123ABC',
                  _rev: '946B7D1C',
                  username: 'pgte',
                  email: 'pedro.teixeira@gmail.com'
                 });

This setup says that we will intercept every HTTP call tohttp://myapp.iriscouch.com.

It will intercept an HTTP GET request to '/users/1' and reply with a status 200, and the body will contain a user representation in JSON.

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