ruby – 为Rails 3插件生成测试路由时出错？

我正在尝试为插件“foobar”开发测试,修改一些标准的Rails助手.在vendor / plugins / foobar / test / foobar_test.rb中,我有以下内容：

# create the test model
class Thing < ActiveRecord::Base
end

# create the test controller,which renders the included index template
class ThingsController < ActionController::Base
  def index
    @things = Thing.all
    format.html { render(:file => 'index') }
  end

  def destroy
    @thing = Thing.find(params[:id])
    @thing.destroy
    format.html { render(:file => 'index') }
  end
end

# confirm that the test environment is working correctly
class ThingsTest < ActiveSupport::TestCase
  test "model is loaded correctly" do
    assert_kind_of Thing,Thing.new
  end
end

# confirm that the controller and routes are working correctly
class ThingsControllerTest < ActionController::TestCase
  test "should load index" do
    with_routing do |set|
      set.draw do
        resources :things,:only => [:index,:destroy]
      end

      get :index
      assert_response :success
    end
  end
end

当我运行rake时,我得到以下输出：

test_should_load_index(ThingsControllerTest):
NameError: undefined local variable or method `_routes' for ThingsController:Class

知道我做错了什么阻止我访问路线？我已经在这里待了好几天并且搜索了很多文档,但都无济于事.谢谢您的帮助！

解决方法

我使用Ruby 1.9.2在Rails 3.1.0.rc1上工作,遵循 “The Basics of Creating Rails Plugins” Rails指南并在因不兼容而爆炸时更正代码.

我开始跑步：

Code$rails new tester
Code$cd tester
tester$rails generate plugin foobar --with-generator

然后修改生成的代码以获取除默认代码之外的这些文件：

# vendor/plugins/foobar/init.rb
require 'foobar'

# vendor/plugins/foobar/lib/foobar.rb

%w{ models controllers helpers }.each do |dir|
  path = File.join(File.dirname(__FILE__),'app',dir)
  $LOAD_PATH << path
  ActiveSupport::Dependencies.autoload_paths << path
  ActiveSupport::Dependencies.autoload_once_paths.delete(path)
end

# I'm not entirely sure this is the best way to add our plugin's views
# to the view search path,but it works
ActionController::Base.view_paths = 
  ActionController::Base.view_paths + 
  [ File.join(File.dirname(__FILE__),'views') ]

<!-- vendor/plugins/foobar/lib/app/views/things/index.html.erb -->
<h1>Listing things</h1>

<table>
  <tr>
    <th>Name</th>
    <th></th>
  </tr>

<% @things.each do |thing| %>
  <tr>
    <td><%= thing.name %></td>
    <td><%= link_to 'Destroy',thing,confirm: 'Are you sure?',method: :delete %></td>
  </tr>
<% end %>
</table>

# vendor/plugins/foobar/test/database.yml

sqlite:
  :adapter: sqlite
  :dbfile: vendor/plugins/foobar/test/foobar_plugin.sqlite.db

sqlite3:
  :adapter: sqlite3
  :database: vendor/plugins/foobar/test/foobar_plugin.sqlite3.db

postgresql:
  :adapter: postgresql
  :username: postgres
  :password: postgres
  :database: foobar_plugin_test
  :min_messages: ERROR

MysqL:
  :adapter: MysqL
  :host: localhost
  :username: root
  :password: password
  :database: foobar_plugin_test

# vendor/plugins/foobar/test/schema.rb

ActiveRecord::Schema.define(:version => 0) do
  create_table :things,:force => true do |t|
    t.string :name
    t.datetime :created_at
    t.datetime :updated_at
  end
end

# vendor/plugins/foobar/test/test_helper.rb

ENV['RAILS_ENV'] = 'test'
ENV['RAILS_ROOT'] ||= File.dirname(__FILE__) + '/../../../..'

require 'test/unit'
require File.expand_path(File.join(ENV['RAILS_ROOT'],'config/environment.rb'))

def load_schema
  config = YAML::load(IO.read(File.dirname(__FILE__) + '/database.yml'))
  ActiveRecord::Base.logger = Logger.new(File.dirname(__FILE__) + "/debug.log")

  db_adapter = ENV['DB']

  # no db passed,try one of these fine config-free DBs before bombing.
  db_adapter ||=
    begin
      require 'rubygems'
      require 'sqlite'
      'sqlite'
    rescue MissingSourceFile
      begin
        require 'sqlite3'
        'sqlite3'
      rescue MissingSourceFile
      end
    end

  if db_adapter.nil?
    raise "No DB Adapter selected. Pass the DB= option to pick one,or install sqlite or sqlite3."
  end

  ActiveRecord::Base.establish_connection(config[db_adapter])
  load(File.dirname(__FILE__) + "/schema.rb")
  require File.dirname(__FILE__) + '/../init'
end

load_schema

# vendor/plugins/foobar/test/foobar_test.rb
require File.dirname(__FILE__) + '/test_helper' 

# create the test model
class Thing < ActiveRecord::Base
end

# create the test controller,which renders the included index template
class ThingsController < ActionController::Base
  def index
    @things = Thing.all
    respond_to do |format|
      format.html # index.html.erb
    end
  end

  def destroy
    @thing = Thing.find(params[:id])
    @thing.destroy
    respond_to do |format|
      format.html { redirect_to things_url }
    end
  end
end

# confirm that the test environment is working correctly
class ThingsTest < ActiveSupport::TestCase
  test "schema has loaded correctly" do
    assert_equal [],Thing.all
  end

  test "model is loaded correctly" do
    assert_kind_of Thing,:destroy]
      end

      get :index
      assert_response :success
    end
  end
end

最后,我们的测试通过：

tester$cd vendor/plugins/foobar/
foobar$rake
-- create_table(:things,{:force=>true})
   -> 0.0059s
-- initialize_schema_migrations_table()
   -> 0.0002s
-- assume_migrated_upto_version(0,["db/migrate"])
   -> 0.0003s
Loaded suite /Users/nick/.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.2/lib/rake/rake_test_loader
Started
...
Finished in 0.091642 seconds.

3 tests,3 assertions,0 failures,0 errors,0 skips

ruby – 为Rails 3插件生成测试路由时出错？

解决方法

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