Factory already registered: user (FactoryGirl::DuplicateDefinitionError)

The gem factory_girl_rails should be required in the spec_helper.rb rather than the gemfile - it is possible that you are requiring FactoryGirl twice which is why you are getting the duplicate.

Try this in your gem file:

group :test do  gem "rspec"  gem 'factory_girl_rails', :require => falseend

Then make sure that factory girl is required in the spec_helper with:

require 'factory_girl_rails'

By the way - you don't need both rspec and rpsec-rails in your gemfile. You can replace both with the following:

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

You need rspec in both groups so that the rake tasks will work in development and the core testing will work in test.

I had the same problem recently. In my case one of the files in /factories had a _spec.rb ending (result of creative cp use). It was loading twice, first by rspec and then as a factory.

Is there any chance you pasted this whole snippet for the support file from the config docs?

# RSpec# spec/support/factory_girl.rbRSpec.configure do |config|  config.include FactoryGirl::Syntax::Methodsend# RSpec without RailsRSpec.configure do |config|  config.include FactoryGirl::Syntax::Methods  config.before(:suite) do    FactoryGirl.find_definitions  endend

If you read the comments you'll see you only want one block or the other. I made this mistake and got the error stated in the question.