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，该插件修改了一些标准的Rails帮助程序。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

---

你知道我做错了什么阻止了我访问这些路线吗？我已经做了几天了，查阅了很多文档，但都没有用。谢谢你的帮助

我使用Ruby 1.9.2在Rails 3.1.0.rc1上实现了一些功能，方法是遵循Rails指南，并在代码因不兼容而崩溃时进行更正

我从跑步开始：

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

然后修改生成的代码，以获得默认文件之外的这些文件：

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

---

---

---

---

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调试此操作的最佳方法是

rake <task> --trace

rake——跟踪

---

这将使您更好地了解导致“U routes”错误的原因（即行号）。

您没有提供足够的信息让他人重现问题。什么版本的Rails？什么rake任务（默认任务不在供应商中运行测试）。在哪里设置数据库架构。当我提供足够的额外上下文来运行您提供的测试时，我没有得到那个错误。老实说，现在使用gem可能会更好。'.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.2/lib/rake/rake_-test_-loader'我想您已经使用了带有ruby 1.9.2的rvm，希望是Rails3。我想知道的是，当您使用未定义的常量时，会发生此名称错误。但我在你的文件中看不到任何路由常量。我经常在无意中编辑文件时出错。你使用git吗？您可能想尝试git diff，也可以恢复到工作阶段。

# 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__), 'app', '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, 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

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

rake <task> --trace