我的问题在这里：
我有两个型号：
class User < ActiveRecord::Base
# Setup accessible (or protected) attributes for your model
attr_accessible :email, :username
has_many :tasks
end
class Task < ActiveRecord::Base
belongs_to :user
end
使用这个简单的routes.rb文件
TestProj::Application.routes.draw do |map|
resources :users do
resources :tasks
end
end
这个架构：
ActiveRecord::Schema.define(:version => 20100525021007) do
create_table "tasks", :force => true do |t|
t.string "name"
t.integer "estimated_time"
t.datetime "created_at"
t.datetime "updated_at"
t.integer "user_id"
end
create_table "users", :force => true do |t|
t.string "email"
t.string "password"
t.string "password_confirmation"
t.datetime "created_at"
t.datetime "updated_at"
t.string "username"
end
add_index "users", ["email"], :name => "index_users_on_email", :unique => true
add_index "users", ["username"], :name => "index_users_on_username", :unique => true
end
和我的任务的控制器：
class TasksController < ApplicationController
before_filter :load_user
def new
@task = @user.tasks.new
end
private
def load_user
@user = User.find(params[:user_id])
end
end
最后这是我的测试：
require 'spec_helper'
describe TasksController do
before(:each) do
@user = Factory(:user)
@task = Factory(:task)
end
#GET New
describe "GET New" do
before(:each) do
User.stub!(:find).with(@user.id.to_s).and_return(@user)
@user.stub_chain(:tasks, :new).and_return(@task)
end
it "should return a new Task" do
@user.tasks.should_receive(:new).and_return(@task)
get :new, :user_id => @user.id
end
end
end
此测试失败，输出如下：
1) TasksController GET New should return a new Task
Failure/Error: get :new, :user_id => @user.id
undefined method `abstract_class?' for Object:Class
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/base.rb:1234:in `class_of_active_record_descendant'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/base.rb:900:in `base_class'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/base.rb:655:in `reset_table_name'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/base.rb:647:in `table_name'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/base.rb:932:in `arel_table'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/base.rb:927:in `unscoped'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/named_scope.rb:30:in `scoped'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activerecord/lib/active_record/base.rb:405:in `find'
# ./app/controllers/tasks_controller.rb:15:in `load_user'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/callbacks.rb:431:in `_run__1954900289__process_action__943997142__callbacks'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/callbacks.rb:405:in `send'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/callbacks.rb:405:in `_run_process_action_callbacks'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/callbacks.rb:88:in `send'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/callbacks.rb:88:in `run_callbacks'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/abstract_controller/callbacks.rb:17:in `process_action'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_controller/metal/rescue.rb:8:in `process_action'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/abstract_controller/base.rb:113:in `process'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/abstract_controller/rendering.rb:39:in `sass_old_process'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/gems/haml-3.0.0.beta.3/lib/sass/plugin/rails.rb:26:in `process'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_controller/metal/testing.rb:12:in `process_with_new_base_test'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_controller/test_case.rb:390:in `process'
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/actionpack/lib/action_controller/test_case.rb:328:in `get'
# ./spec/controllers/tasks_controller_spec.rb:20
# /home/chopper/.rvm/gems/ruby-1.8.7-p249@rails3/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:209:in `inject'
有人能帮我理解这里发生了什么吗？它似乎是一个RSpec问题，因为控制器动作确实有效，但我可能是错的。
答案 0 :(得分：0)
我使用您提供的信息从头开始重新创建您的项目，并且控制器规范运行没有任何失败（Rails 2.3.5，Ruby 1.8.7）。所以我猜你的项目和/或Rails配置有什么不对劲？对不起，我知道继续下去并不多。
答案 1 :(得分：0)
我最近使用rspec-rails 2.0.0.beta22（在Ruby 1.9.2下）使用我的Rails 3应用程序收到此错误消息。经过大量的拔毛后我升级到最近发布的版本rspec-rails 2.0.0.rc并且错误消失了。所以，我建议升级你的rspec-rails gem。