thoughtbot--factory_bot/spec/acceptance/definition_camel_string_spec.rb

describe "an instance generated by a factory named a camel case string " do
  before do
    define_model("UserModel")

    FactoryBot.define do
      factory 'UserModel', class: UserModel
    end
  end

  it "registers the UserModel factory" do
    expect(FactoryBot.factory_by_name('UserModel')).to be_a(FactoryBot::Factory)
  end
end