工厂女孩未初始化不断型号名称与轨道的API(Factory Girl uninitialized c

我试图让一个工厂为我的用户模型，但是当我运行rspec的，我得到

Failure/Error: user = build(:user, email: "invalid@email.com")
 NameError:
   uninitialized constant User

当我跳进铁轨控制台，我可以做User.all ，它将返回我有用户和FactoryGirl.build(:user, email: "invalid@email.com")工作得很好，所以我不知道在哪里问题是。

我已经创建了Rails的API项目，使用Rails 4.2红宝石2.2

# spec/spec_helper.rb
# i have to set spec/factories as the location explicitly or it won't find the factories

  require 'factory_girl_rails'
  RSpec.configure do |config|
    config.include FactoryGirl::Syntax::Methods

    FactoryGirl.definition_file_paths = [File.expand_path('../factories', __FILE__)]
    FactoryGirl.find_definitions
    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
    end

    config.mock_with :rspec do |mocks|
      mocks.verify_partial_doubles = true
    end

    config.filter_run :focus
    config.run_all_when_everything_filtered = true

    if config.files_to_run.one?
      config.default_formatter = 'doc'
    end

    config.profile_examples = 10
    config.order = :random
  end

# spec/factories/user.rb
FactoryGirl.define do
  factory :user do
    email     "test@example.com"
    password  "password"
  end
end

#spec/requests/api/v1/sign_in_spec.rb
require 'spec_helper'

describe "Signing In" do

  it "will reject an invalid user" do
    user = build(:user, email: "invalid@email.com")
    post :new_api_v1_user_session, user: { email: user.email, password: user.password}
    is_expected.to respond_with 401
  end

end

#Gemfile
ruby '2.2.0'
gem 'rails', '4.2.0'
gem 'rails-api'
gem 'spring', :group => :development
gem 'pg'
gem 'active_model_serializers', '0.8.3'
gem 'devise'
gem 'simple_token_authentication'
gem 'rdoc'
gem 'responders'

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

谢谢！

更新：我可以运行FactoryGirl.build(:user)与rails console test没有任何问题......

貌似所有我需要做的是require 'rails_helper'在我spec_helper.rb。这也让我从spec_helper删除FactoryGirl.definition_file_paths。