Node.js 消防软管上的模拟记录不适用于aws sdk模拟
我试图在AWS Firehose对象上模拟putRecord方法,但模拟没有成功。代码最终在firehose对象上调用aws sdk api,该对象与实时aws服务进行通信。下面的代码有什么问题?为了避免此实时服务调用并使mock生效,需要更改哪些内容 有没有一种方法可以发送一个thenable对象,而不仅仅是普通对象,就像下面的回调一样?i、 e.如何使用我在测试代码中定义的callbackFunc之类的东西 最后我还需要检查mock是否被调用。我将如何实现这一点?我能否以某种方式使用sinon.stub来实现这一点,以便稍后进行验证?怎么做 下面是代码和测试代码部分。。。已修改为此发布的简单表单 作为文件一部分的代码,比如samplelogging.jsNode.js 消防软管上的模拟记录不适用于aws sdk模拟,node.js,mocking,aws-sdk,amazon-kinesis-firehose,aws-sdk-mock,Node.js,Mocking,Aws Sdk,Amazon Kinesis Firehose,Aws Sdk Mock,我试图在AWS Firehose对象上模拟putRecord方法,但模拟没有成功。代码最终在firehose对象上调用aws sdk api,该对象与实时aws服务进行通信。下面的代码有什么问题?为了避免此实时服务调用并使mock生效,需要更改哪些内容 有没有一种方法可以发送一个thenable对象,而不仅仅是普通对象,就像下面的回调一样?i、 e.如何使用我在测试代码中定义的callbackFunc之类的东西 最后我还需要检查mock是否被调用。我将如何实现这一点?我能否以某种方式使用sino
/*jshint strict:true */
/*jshint node:true */
/*jshint esversion:6 */
/*jshint mocha:true */
"use strict";
var Promise = require('bluebird');
var AWS = require('aws-sdk');
var uuid = require('uuid');
AWS.config.setPromisesDependency(Promise);
var Logger = {
/**
* Get's a AWS Firehose Instance
*/
getFirehoseInstance: function getFirehoseInstance() {
if (!(this.firehose)) {
this.firehose = new AWS.Firehose({apiVersion: "2015-08-04", region: "us-west-2"});
}
return this.firehose;
},
getLogger: function getLogger(options) {
options = options || {};
let self = this;
self.class = options.class;
self.firehose = self.getFirehoseInstance();
return self;
},
logInfo: function logInfo(dataToLog, callback) {
this._log("info", dataToLog)
.then(function (data){
if (callback) {
callback();
}
});
return;
},
/**
* @api: private
*/
_log: function _log(traceLevel, dataToLog) {
return new Promise(function(resolve, reject) {
var params = params || {};
AWS.config.update({ logger: process.stdout });
AWS.config.update({ retries: 3 });
var recordParams = {
type: params.type || 'LogEntry'
};
if (typeof dataToLog === 'string' || dataToLog instanceof String) {
recordParams.data = { message: dataToLog };
} else {
recordParams.data = dataToLog;
}
recordParams.data.id = uuid.v1();
recordParams.data.preciseTimestamp = Math.floor(new Date().getTime()/1000);
recordParams.data.class = this.class;
recordParams.data.traceLevel = traceLevel;
var firehoseRecordParams = {
DeliveryStreamName: "mystreamname", //replace mystreamname with real stream name
Record: {
Data: JSON.stringify(recordParams)+',\n'
}
};
this.firehose.putRecord(firehoseRecordParams, function(err, recordId) {
console.log("debug: recordId returned by putRecord = " + JSON.stringify(recordId));
return resolve(recordId);
});
}.bind(this));
}
};
module.exports = Logger;
这是我的测试代码,它是一个文件的一部分,比如sampleloggingtest.js
var expect = require('chai').expect;
var Promise = require("bluebird");
var sinon = require("sinon");
var AWSMock = require('aws-sdk-mock');
describe.only("Logging tests", function () {
it.only("Test AWS firehose API invoked", function (done) {
let mylogger = Logger.getLogger({class: "Unit Test"});
let firehoseInstance = mylogger.getFirehoseInstance();
// want to have a callback function that returns a thenable object and not just an object. Not sure how to use it though with mock
// so for now this is just code that shows what i intend to do.
let callBackFunc = function( err, recordId) {
console.log("debug: returend from putRecord, recordId = " + JSON.stringify(recordId));
return Promise.resolve(recordId);
};
// calling mock as per the documentation at https://github.com/dwyl/aws-sdk-mock
AWSMock.mock('Firehose', 'putRecord', function(params, callback) {
console.log("debug: callback to putRecord to be called");
callback(null, {"RecordId": "12345"} );
});
// calling a method that should call firehose logging but our mock should intercept it - though it doesn't.
mylogger.logInfo({ prop1: "value1" }, function(){
console.log("debug: in the callback that was passed to logInfo...");
done();
});
});
});
分享我找到的答案,特别是因为另一个人(mmorrisson)也在尝试同样的方法 实际上,我将_setFirehoseInstance方法添加到我的logger类中,该类将仅从我的测试代码中调用,该测试代码将firehose实例(在生产代码中,该实例将调用新的AWS.firehose())替换为我自己的简单模拟类 在我的测试代码中。。。 让firehoseMock={} 在beforeach()中创建并设置模拟以替换实际的Firehose实例,并在afterEach()中还原该实例
beforeEach(function (done) {
logger = new Logger({class: "Unit Test"});
firehose = logger.getFirehoseInstance();
consoleMock = sinon.mock(console);
firehoseMock.putRecord = function(params, callback) {
let recordIdObj = {"RecordId": recordIdVal};
callback(null, recordIdObj);
};
logger._setFirehoseInstance(firehoseMock);
sinon.spy(firehoseMock, "putRecord");
done();
});
afterEach(function (done) {
firehoseMock.putRecord.restore();
logger._setFirehoseInstance(firehose);
consoleMock.restore();
done();
});
在我们尝试记录的测试代码中,检查是否调用了firehoseMock.putRecord
it("Test AWS firehose API invoked", function (done) {
logger.setMode("production");
logger.setEnvironment("test");
logger.logInfo({ prop1: "value1" }, function(data){
expect(firehoseMock.putRecord.calledOnce).to.equal(true); // should have been called once
expect(data.RecordId).to.equal(recordIdVal); // should have matching recordId
done();
});
});
在生产代码中,logger类中有firehose实例的getter和setter
/**
* Get's a AWS Firehose Instance
*/
getFirehoseInstance() {
if (!(this.firehose)) {
this.firehose = new AWS.Firehose({apiVersion: Config.apiVersion, region: Config.region});
}
return this.firehose;
}
/**
* Set a AWS Firehose Instance - for TEST purose
*/
_setFirehoseInstance(firehoseInstance) {
if (firehoseInstance) {
this.firehose = firehoseInstance;
}
}
这对我有用。当logger在生产中调用firehose实例方法时,它将转到AWS服务,但在单元测试中,当我调用log方法时,它将调用模拟上的putRecord,因为我已将firehose实例替换为模拟。然后,我可以适当地测试mock上的putRecord是否被调用(使用sinon.spy)。我正在尝试做同样的事情(mock Firehose)并看到相同的结果(mock未调用,只有真正的服务)。在aws sdk模拟文档中,他们的测试代码使用var aws=require('aws-sdk-mock'),而不是AWSMock。我不知道这在幕后是如何工作的,但如果它通过替换变量来工作,那么名称可能很重要。所以我并不孤单。:-:-(希望听到有人使用它。或者希望听到AWS开发人员的声音…顺便说一句,变量的名称不应该改变结果。我确信您尝试过AWS,但它也不起作用。