mongodb-launcher

mongodb-launcher

A simple process launcher for creating test instance of mongodb to use in testing. Usually the reason you'll want to do this is to make sure your test databases are isolated from your default mongo instance so tests cannot destroy real data. It also allows you to run your tests without assuming processes outside the test runner are already running.

Starting a mongo instance

You can start as many mongo instances as you need by passing different ports. If an instance is already running on that port, the start function will call back immediately.

var mongo = require('mongodb-launcher');

var args = {port:45000, dbPath: './testDb'};
var db;
mongo.start(function(err, _db) {
  if (err) {
    console.error(err);
    process.exit(1);
  }
  
  db = _db;
  console.log('Mongo instance alive on port', args.port);
});

Stopping a mongo instance

To stop a mongo instance, you can either call the stop method on the returned db intance, or call stop on the module, passing in the port of the instance you want to kill.

db.stop(function(err) {
  // ...
});

// OR

mongo.stop(45000, function(err) {
  // ...
});

Emitted events