遵循 http://ruby.railstutorial.org/ 教程时出现 RSpec 错误

我到处搜索但似乎找不到解决方案。我一直在关注有关的教程http://ruby.railstutorial.org/ http://ruby.railstutorial.org/我在第 3 章中尝试使用“rspec spec/”执行测试

但是我不断收到以下错误：

Failure/Error: Unable to find matching line from backtrace
 NameError:
   uninitialized constant ActionController::TestCase::Assertions
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/backward_compatibility.rb:20:in `const_missing'
 # /var/lib/gems/1.8/gems/rspec-expectations-2.5.0/lib/rspec/expectations/backward_compatibility.rb:6:in `const_missing'
 # /usr/lib/ruby/1.8/action_controller/integration.rb:18
 # /var/lib/gems/1.8/gems/webrat-0.7.1/lib/webrat/integrations/rails.rb:2
 # /var/lib/gems/1.8/gems/webrat-0.7.1/lib/webrat/core/configuration.rb:105:in `mode='
 # /var/lib/gems/1.8/gems/rspec-rails-2.5.0/lib/rspec/rails/example/controller_example_group.rb:172
 # /var/lib/gems/1.8/gems/webrat-0.7.1/lib/webrat/core/configuration.rb:9:in `configure'
 # /var/lib/gems/1.8/gems/rspec-rails-2.5.0/lib/rspec/rails/example/controller_example_group.rb:172
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/hooks.rb:29:in `instance_eval'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/hooks.rb:29:in `run_in'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/hooks.rb:64:in `run_all'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/hooks.rb:64:in `each'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/hooks.rb:64:in `run_all'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/hooks.rb:110:in `run_hook'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:191:in `eval_before_eachs'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:191:in `each'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:191:in `eval_before_eachs'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example.rb:144:in `run_before_each'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example.rb:48:in `run'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example.rb:106:in `with_around_hooks'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example.rb:46:in `run'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example.rb:99:in `with_pending_capture'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example.rb:98:in `catch'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example.rb:98:in `with_pending_capture'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example.rb:45:in `run'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:262:in `run_examples'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:258:in `map'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:258:in `run_examples'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:232:in `run'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:233:in `run'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:233:in `map'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/example_group.rb:233:in `run'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/command_line.rb:27:in `run'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/command_line.rb:27:in `map'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/command_line.rb:27:in `run'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/reporter.rb:12:in `report'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/command_line.rb:24:in `run'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/runner.rb:55:in `run_in_process'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/runner.rb:46:in `run'
 # /var/lib/gems/1.8/gems/rspec-core-2.5.1/lib/rspec/core/runner.rb:10:in `autorun'
 # /var/lib/gems/1.8/bin/rspec:19

我尝试卸载并重新安装 gem，但没有成功。

这是我的宝石清单：

    *** LOCAL GEMS ***

abstract (1.0.0)
actionmailer (3.0.4, 3.0.3)
actionpack (3.0.4, 3.0.3)
activemodel (3.0.4, 3.0.3)
activerecord (3.0.4, 3.0.3)
activerecord-oracle_enhanced-adapter (1.3.2, 1.3.1)
activeresource (3.0.4, 3.0.3)
activesupport (3.0.4, 3.0.3)
arel (2.0.8, 2.0.7)
autotest (4.4.6)
autotest-rails-pure (4.1.2)
builder (3.0.0, 2.1.2)
bundler (1.0.10)
cgi_multipart_eof_fix (2.5.0)
daemon_controller (0.2.6, 0.2.5)
diff-lcs (1.1.2)
erubis (2.6.6)
fastthread (1.0.7)
file-tail (1.0.5)
gem_plugin (0.2.3)
i18n (0.5.0)
mail (2.2.15, 2.2.14)
mime-types (1.16)
nifty-generators (0.4.5, 0.4.4)
nokogiri (1.4.4)
passenger (3.0.2)
polyglot (0.3.1)
rack (1.2.1)
rack-mount (0.6.13)
rack-test (0.5.7)
rails (3.0.4, 3.0.3)
railties (3.0.4, 3.0.3)
rake (0.8.7)
redgreen (1.2.2)
rspec (2.3.0)
rspec-core (2.3.1)
rspec-expectations (2.3.0)
rspec-mocks (2.3.0)
rspec-rails (2.3.0)
ruby-oci8 (2.0.4)
spruz (0.2.5)
sqlite3 (1.3.3)
sqlite3-ruby (1.3.3, 1.3.2)
sys-uname (0.8.5)
thor (0.14.6)
treetop (1.4.9)
tzinfo (0.3.24)
webrat (0.7.3, 0.7.1)
ZenTest (4.4.2)

Gem File

source 'http://rubygems.org'

gem 'rails', '3.0.4'
gem 'sqlite3-ruby', '1.3.2', :require => 'sqlite3'

group :development do
  gem 'rspec-rails', '2.5.0'
end

group :test do
  gem 'rspec', '2.5.0'
  gem 'webrat', '0.7.1'
end

我找到了与 m.galkiewicz 类似的解决方案。 我用的是ubuntu 10.10。我发现这个问题是因为您的错误中包含以下行： # /usr/lib/ruby/1.8/action_controller/integration.rb:18

当我与在同一版本的 ubuntu 上安装的朋友进行比较时，action_controller 不在 /usr/lib/ruby/1.8 路径内。

我发现我是通过 apt-get 安装 Rails 和 rake，而不是通过 ruby​​gems。以下是我为使其正常运行所做的修改：

1. sudo apt-get 删除 Rails
2. sudo gem 安装rails
3. 须藤捆绑安装

然后我就可以运行 rspec 并继续学习本教程。