group :development do
  gem 'rails3-generators'
  gem "rspec",'>= 2.0.0.beta.19'
  gem "rspec-rails",'>= 2.0.0.beta.19'
end

group :test do
  gem "faker"
  gem "rspec",'>= 2.0.0.beta.19'
  gem "machinist",'>= 2.0.0.beta1'
  gem "mocha"
  gem "capybara",">= 0.3.9"
end

在spec / spec_helper.rb中：

RSpec.configure do |config|
  config.mock_with :mocha
  config.fixture_path = "#{::Rails.root}/spec/fixtures"
  config.use_transactional_fixtures = true
end

不过,当我使用Rails生成器

rails generate scaffold foo name:string

…我在spec / controllers / foos_controller_spec.rb中得到以下内容：

def mock_foo(stubs={})
    @mock_foo ||= mock_model(Foo,stubs).as_null_object
  end

…这当然会导致所有规格失败.

有人知道我失踪了吗？

提前致谢.