RSPEC 和工厂女孩 SystemStackError：堆栈级别太深

Question

我试图解决我的 Spec 测试问题，但我收到以下错误 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，我与我的工厂的关联存在问题。

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

到目前为止，我的会话测试是：

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

我真的不确定是什么造成了问题。 在我的模型中，我为每个用户分配了一个默认角色作为“注册”，并为第一个用户分配了“管理员”角色。

用户.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

任何建议都将受到欢迎。 谢谢

Answer 1

问题是这样的：

@user = Factory(:user)

您有一个循环引用：您的 :user 工厂创建了一个 :role 和 :admin 工厂。然后:role 和:admin 工厂分别创建另一个:user 工厂，然后再创建另一个:role 和:admin 工厂，依此类推，直到出现堆栈级别太深的错误。

您需要从其中一些中删除关联。我建议从:role 和:admin 中删除role.association 行。每当您创建 :user 时，它仍会为您创建 :role 和 :admin 行。