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Creating test data in MongoDB using node.js

· Performance Zone

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I need to create a fairly large number of test documents in my MongoDB to test some functionality that will be retrieving pages of data, ordered by date.

Rather than doing this by hand, using the Node.js driver for MongoDB makes this pretty easy with only a few lines of code. This is a starting point, in my case I need to add some additional logic to increment a date value and create some other random values on each doc, but this is a rough outline of an approach:

Assuming Node.js already installed, install the MongoDB Node.js driver with:

npm install mongodb

The code to install multiple docs in one shot looks something like this: 

var MongoClient = require('mongodb').MongoClient,
  test = require('assert');
var ObjectId = require('mongodb').ObjectID;
MongoClient.connect('mongodb://localhost:27017/databasename', function(err, db) {
  test.equal(err, null);
  var col = db.collection('collectioname');
  var docs = [];
  //update this for how many docs to insert
  for(i=0; i<10; i++){
    docs[i] = {a:i}; // create doc here using json
  col.insertMany(docs, function(err, r) {
    test.equal(err, null);
Run the script with: 
node scriptname.js 

Additional info in the MongoDB Getting Started Guide  for node.js

See Forrester’s Report, “Vendor Landscape, Application Performance Management” to identify the right vendor to help IT deliver better service at a lower cost, brought to you in partnership with BMC.


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