在 node.js 中查看来自 MongoDB 的数据

Question

首先，编码对我来说是新事物。到目前为止，我是 Java 应用程序的手动测试员。 现在，我的任务是学习做“自动化的事情”，但我遇到了一个问题。

我正在尝试从 MongoDB 获取数据并将其与测试数据进行比较。测试是量角器和黄瓜的混合体。

我认为问题在于我不理解或我还不知道。

在 mongoDB 我有：

{
    "_id" : 123456,
    "mykey" : 2
}

IDE 中的代码：

import * as chai from 'chai';
import * as chaiAsPromised from 'chai-as-promised';
chai.use(chaiAsPromised);
const expect = chai.expect;

module.exports = function () {
    this.Then(/^Data should be same$/, function (callback) {

// Connection to mongoDB

    const MongoClient = require('mongodb').MongoClient;
    MongoClient.connect('mongodb://localhost:8517/fpl').then(function(db) {

      const collection = db.collection('test');

// Test data

      const testData = [{
        _id: 123456,
        mykey: 2
      }];

// Query to DB for data

      const a = collection.find({_id: 123456}).toArray();

// "is data from DB == test data?"

      return expect(a).to.eventually.equal(testData).notify(callback);


    }).catch((err) => {
      console.log(err);
});

结果我收到了消息：

Message:
 AssertionError: expected [ { _id: 123456, mykey: 2 } ] to equal [ { _id: 123456, mykey: 2 } ]

1 scenario (1 failed)
1 step (1 failed)
0m00.094s
AssertionError: expected [ { _id: 123456, mykey: 2 } ] to equal [ { _id: 123456, mykey: 2 } ]
  message: 'expected [ { _id: 123456, mykey: 2 } ] to equal [ { _id: 123456, mykey: 2 } ]',
  showDiff: true,
  actual: [ { _id: 123456, mykey: 2 } ],
  expected: [ { _id: 123456, mykey: 2 } ] }
[14:22:34] I/local - Shutting down selenium standalone server.
[14:22:34] I/launcher - 0 instance(s) of WebDriver still running
[14:22:34] I/launcher - chrome #01 failed 1 test(s)
[14:22:34] I/launcher - overall: 1 failed spec(s)
[14:22:34] E/launcher - Process exited with error code 1

任何想法我做错了什么？

Answer 1

使用deep 标志 http://chaijs.com/api/bdd/#method_deep

collection.find({_id: 123456}).toArray(function(err, docs) {
    expect(docs).to.deep.equal(testData).notify(callback);
});