`load_missing_constant'：未初始化的常量AuthenticatedTestHelper（NameError）

Question

我有一个旧的Rails项目，需要更改甚至更新。

我的宝石清单如下所示：

*** LOCAL GEMS ***

actionmailer (2.3.14, 2.3.11, 2.3.8, 2.3.5, 2.3.2)
actionpack (2.3.14, 2.3.11, 2.3.8, 2.3.5, 2.3.2)
activerecord (2.3.14, 2.3.11, 2.3.8, 2.3.5, 2.3.2)
activeresource (2.3.14, 2.3.11, 2.3.8, 2.3.5, 2.3.2)
activesupport (3.2.9, 2.3.14, 2.3.11, 2.3.8, 2.3.5, 2.3.2)
addressable (2.3.2)
BlueCloth (1.0.1)
bourne (1.1.2)
bundler (1.2.3)
childprocess (0.3.6)
ffi (1.2.0)
i18n (0.6.1)
json (1.7.5)
libwebsocket (0.1.7.1)
metaclass (0.0.1)
mocha (0.10.5)
multi_json (1.5.0)
mysql (2.8.1)
paperclip (2.3.1.1)
rack (1.1.3, 1.0.1)
rails (2.3.14, 2.3.2)
rake (0.8.7)
rdoc (3.12)
restful_authentication (1.1.6)
rspec (1.3.1)
ruby-net-ldap (0.0.4)
rubygems-bundler (1.1.0)
rubyzip (0.9.9)
rvm (1.11.3.5)
selenium-client (1.2.18)
selenium-webdriver (2.27.2)
shoulda (2.11.3)
shoulda-context (1.0.2)
shoulda-matchers (1.4.2)
thoughtbot-shoulda (2.11.1)
websocket (1.0.6)

运行rake test我得到：

/Users/noah/.rvm/gems/ruby-1.8.7-p371@website/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:469:in `load_missing_constant': uninitialized constant AuthenticatedTestHelper (NameError)
    from /Users/noah/.rvm/gems/ruby-1.8.7-p371@website/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:106:in `const_missing'
    from /Users/noah/.rvm/gems/ruby-1.8.7-p371@website/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:118:in `const_missing'
    from ./test/test_helper.rb:4
    from ./test/functional/admin/articles_controller_test.rb:1:in `require'
    from ./test/functional/admin/articles_controller_test.rb:1
    from /Users/noah/.rvm/gems/ruby-1.8.7-p371@website/gems/rake-0.8.7/lib/rake/rake_test_loader.rb:5:in `load'
    from /Users/noah/.rvm/gems/ruby-1.8.7-p371@website/gems/rake-0.8.7/lib/rake/rake_test_loader.rb:5
    from /Users/noah/.rvm/gems/ruby-1.8.7-p371@website/gems/rake-0.8.7/lib/rake/rake_test_loader.rb:5:in `each'
    from /Users/noah/.rvm/gems/ruby-1.8.7-p371@website/gems/rake-0.8.7/lib/rake/rake_test_loader.rb:5
/Users/noah/.rvm/rubies/ruby-1.8.7-p371/bin/ruby -I"lib:test" "/Users/noah/.rvm/gems/ruby-1.8.7-p371@website/gems/rake-0.8.7/lib/rake/rake_test_loader.rb"  
Errors running test:units and test:functionals!

这是我的测试助手的第一部分：

ENV["RAILS_ENV"] = "test"
require File.expand_path(File.dirname(__FILE__) + "/../config/environment")
require 'test_help'
include AuthenticatedTestHelper

include AuthenticatedTestHelper任何地方都会失败。 关于为什么这样做的任何想法？

更新：

我相信我的问题是restful_authentication无法生成将提供AuthenticatedTestHelper的文件。

在依赖项内部，我具有以下内容：

qualified_name = qualified_name_for from_mod, const_name
      path_suffix = qualified_name.underscore
      name_error = NameError.new("uninitialized constant #{qualified_name}")

      file_path = search_for_file(path_suffix)
      if file_path && ! loaded.include?(File.expand_path(file_path)) # We found a matching file to load
        require_or_load file_path
        raise LoadError, "Expected #{file_path} to define #{qualified_name}" unless uninherited_const_defined?(from_mod, const_name)
        return from_mod.const_get(const_name)
      elsif mod = autoload_module!(from_mod, const_name, qualified_name, path_suffix)
        return mod
      elsif (parent = from_mod.parent) && parent != from_mod &&
            ! from_mod.parents.any? { |p| uninherited_const_defined?(p, const_name) }
        # If our parents do not have a constant named +const_name+ then we are free
        # to attempt to load upwards. If they do have such a constant, then this
        # const_missing must be due to from_mod::const_name, which should not
        # return constants from from_mod's parents.
        begin
          return parent.const_missing(const_name)
        rescue NameError => e
          raise unless e.missing_name? qualified_name_for(parent, const_name)
          raise name_error
        end
      else
        puts file_path #added this line
        raise name_error
      end
    end

并且我添加了puts file_path这一行，它为nil，所以rails也不知道这个文件在哪里。 有任何想法吗？

Answer 1

通常，此模块应位于lib/authenticated_test_helper.rb

如果找不到或无法找到它，则可以在该文件中创建一个空模块，然后逐步实现或存根。

但是，如果您打算升级到Rails 3，则无论如何都必须选择另一个身份验证框架（Authlogic，Devise），因为restful_authentication似乎不适用于Rails 3。

PS：从代码dependencies.rb不帮你。 它仅包含从常量（在您的情况下为=）中导出文件名的代码。它只是失败，因为在加载路径中没有名为authenticated_test_helper文件。