@akeating-redhat/mongodb-lock/test/setup.js

Locks which uses MongoDB's atomic operations.

var mongodb = require('mongodb')

var conStr = 'mongodb://localhost:27017/mongodb-lock'

module.exports = function(callback) {
  mongodb.MongoClient.connect(conStr, function(err, db) {
    if (err) throw err
    var done = 0

    // let's empty out some collections to make sure there are no messages
    var collections = [
      'default', 'locks', 'lock2',
    ]
    collections.forEach(function(col) {
      db.collection(col).remove(function() {
        done += 1
        if ( done === collections.length ) {
          callback(db)
        }
      })
    })
  })
}