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Creating test data in MongoDB using node.js

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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);
    console.log(r.insertedCount);
    db.close();
  });
});
Run the script with: 
node scriptname.js 

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

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