英文:
How to mock stats method in elasticsearch?
问题
以下是要翻译的内容：
"我想使用Node.js查询Elasticsearch的统计信息。
这是我的源代码：
const { Client } = require('@elastic/elasticsearch');client = new Client({Connection: '适当的 AWS 连接',node: '一些 URL',agent: {keepalive:,maxsocket:,maxfreesocket:}})const stats = await client.nodes.stats();console.log(stats);// 统计信息上的一些操作
我如何模拟这个Elasticsearch方法？
我尝试了以下方法，但无法模拟stats()。
let sandbox = sinon.createSandbox();before(() => {sandbox.stub(Client.prototype, 'nodes').get(() => {stats: () => {return dummydata;}// 其中dummydata已经硬编码})})
我在哪里出错了？"
英文:
I want to query stats of elasticsearch using nodeJs.
Here is my source code
const {Client} = require('@elastic/elasticsearch');client = new Client({Connection:'appropriate aws connection',node:'some url',agent:{keepalive:,maxsocket:,maxfreesocket:}})const stats = await client.nodes.stats();console.log(stats);// some operation on stats
How do i mock this elasticsearch method?<br>
I have tried following but it is unable to mock the stats().
let sandbox = sinon.createSandbox();before(()=>{sandbox.stub(Client.prototype,'nodes').get(()=>{stats: ()=>{return dymmydata;}//where dummydata is already hardcoded})})
Where am I going wrong here?
答案1
得分: 1
让我们看看nodes API是如何定义的。请查看/v8.8.1/src/api/index.ts#L401，你会发现nodes API是通过Object.defineProperties和一个获取函数来定义的。
Object.defineProperties(API.prototype, {// ...nodes: {get () { return this[kNodes] === null ? (this[kNodes] = new NodesApi(this.transport)) : this[kNodes] }}// ...}
我们应该使用stub.get(getterFn) API来替换这个存根的新获取函数。
例如：
index.js：
const { Client } = require('@elastic/elasticsearch');const client = new Client({node: 'http://localhost:9200',});export function main() {return client.nodes.stats();}
index.test.js：
const sinon = require('sinon');const { Client } = require('@elastic/elasticsearch');describe('76653113', () => {it('should pass', async () => {const nodesApiMock = {stats: sinon.stub().resolves('ok'),};sinon.stub(Client.prototype, 'nodes').get(() => nodesApiMock);const { main } = require('./');const actual = await main();sinon.assert.match(actual, 'ok');sinon.assert.calledOnce(nodesApiMock.stats);});});
英文:
Let's see how the nodes API is defined. See /v8.8.1/src/api/index.ts#L401, you will find the nodes API is defined by Object.defineProperties with a getter function.
Object.defineProperties(API.prototype, {// ...nodes: {get () { return this[kNodes] === null ? (this[kNodes] = new NodesApi(this.transport)) : this[kNodes] }}// ...}
We should use stub.get(getterFn) API to replace a new getter for this stub.
E.g.
index.js:
const { Client } = require('@elastic/elasticsearch');const client = new Client({node: 'http://localhost:9200',});export function main() {return client.nodes.stats();}
index.test.js:
const sinon = require('sinon');const { Client } = require('@elastic/elasticsearch');describe('76653113', () => {it('should pass', async () => {const nodesApiMock = {stats: sinon.stub().resolves('ok'),};sinon.stub(Client.prototype, 'nodes').get(() => nodesApiMock);const { main } = require('./');const actual = await main();sinon.assert.match(actual, 'ok');sinon.assert.calledOnce(nodesApiMock.stats);});});
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