class CreateFakes < ActiveRecord::Migration
  def change
    create_table :fakes do |t|
      t.decimal :float_value, :precision => 4, :scale => 3
    end
  end
end

This will allow you to have 3 digits after the decimal point and 4 digits max.

Add in Gemfile:

group :development, :test do
  gem 'rspec-rails'
  gem 'spork-rails'
end

group :test do
  gem 'capybara'
  gem 'database_cleaner'
  gem 'email_spec'
  gem 'poltergeist'
  gem 'launchy'
  gem 'selenium-webdriver'
end

Run bundle install

Ensure your spec_helper.rb looks similar with this:

require 'rubygems'
require 'spork'
#uncomment the following line to use spork with the debugger
# require 'spork/ext/ruby-debug'

Spork.prefork do
  # Loading more in this block will cause your tests to ...

If some of your scripts don't work with turbolinks, you should do the following:

ready = ->
  #your code here
  
$(document).ready(ready)
$(document).on('page:load', ready)