RSPEC和工厂女孩SystemStackError：堆栈层次过深

Question

我一直试图解决的问题，我的规格测试，我得到以下错误 失败：

1) SessionsController POST 'create' with valid email and password should sign in the user 
    Failure/Error: Unable to find matching line from backtrace 
    SystemStackError: 
     stack level too deep 
    # /Users/Aurelien/.rvm/gems/ruby-1.9.2-p290@rails3/gems/activerecord-3.1.0/lib/active_record/connection_adapters/abstract/connection_specification.rb:103 

Finished in 37.77 seconds 
9 examples, 1 failure 

Failed examples: 

rspec ./spec/controllers/sessions_controller_spec.rb:35 # SessionsController POST 'create' with valid email and password should sign in the user 

在此之前，我有问题与关联我工厂。

Factory.define :role do |role| 
    role.name     "Registered" 
    role.association :user, :factory => :user 
end 

Factory.define :admin do |role| 
    role.name     "Admin" 
    role.association :user, :factory => :user 
end 

Factory.define :user do |user| 
    user.first_name    "Foo" 
    user.last_name    "Bar" 
    user.email     "foo@bar.com" 
    user.password    "foobar" 
    user.password_confirmation "foobar" 
    user.status     "At foobar" 
    user.description   "Lorem Ipsum sit dolor amet." 
    user.username    "foobar" 
    user.association :role, :factory => :role 
    user.association :admin, :factory => :role 
end 

Factory.define :user_with_admin_role, :parent => :user do |user| 
    user.after_create { |u| Factory(:role, :user => u) } 
end 

Factory.define :reg_user do |user| 
    user.first_name    "bar" 
    user.last_name    "foo" 
    user.email     "bar@foo.com" 
    user.password    "foobar" 
    user.password_confirmation "foobar" 
    user.status     "At foobar" 
    user.description   "Lorem Ipsum sit dolor amet." 
    user.username    "barfoo" 
    user.association :role, :factory => :role 
end 

和我的会话测试到目前为止是：

describe "POST 'create'" do 
    describe "invalid signin" do 
     before(:each) do 
     @attr = { :email => "email@example.org", :password => "invalid" } 
     end 

     it "should re-render the 'new' page with a flash error" do 
     post :create, :session => @attr 
     flash.now[:error] =~ /invalid/i 
     response.should render_template('new') 
     end 

    end 

    describe "with valid email and password" do 

     before(:each) do 
     @user = Factory(:user) 
     @attr = { :email => @user.email, :password => @user.password} 
     end 

     it "should sign in the user" do 
     post :create, :session => @attr 
     controller.current_user.should == @user 
     end 

    end 

    end 

我真的不知道什么是创造的问题。 在我的模型中，我为每个用户分配一个默认角色，作为第一个用户的“注册”和“管理员”角色。

user.rb

def assign_default_role 
    if User.count == 0 
     self.roles << Role.find_by_name("Admin") 
     self.roles << Role.find_by_name("Registered") 
    end 
    self.roles << Role.find_by_name("Registered") unless User.count == 0 
    end 

任何建议将是最受欢迎的。 感谢

Answer 1

的问题行是这样的：

@user = Factory(:user) 

你有一个循环引用：你:user工厂创建一个:role和:admin工厂。然后，:role和:admin工厂各自创建另一个:user工厂，然后再创建另一个工厂:role和:admin，依此类推，直到出现堆栈级别太深的错误。

您需要删除其中某些关联。我建议从:role和:admin中删除role.association行。无论何时创建:user，它仍会为您创建:role和:admin行。