Generating timestamps with mongo Ruby driver (Ruby code)

generate_ts.rb

# encoding: utf-8

require 'json'
require 'mongo'

@conn = Mongo::Connection.new("localhost", 27017, safe: true)
@db   = @conn['timestamp_test']
@coll = @db['test_col']
@coll.save({a: BSON::Timestamp.new(4294967295, 4294967295)})

@coll.find.first["a"].seconds # => 4294967295 
@coll.find.first["a"].increment # => 4294967295

# mongo shell
# > db.test_col.find()
# { "_id" : ObjectId("51012a6d8d74494bd8000001"), "a" : Timestamp(4294967295000, 4294967295) }