我使用 autotest-notification v2.3.4 和 rspec v2.0.1 在运行 Ubuntu 12.04 的机器上的 rails v3.2.3 项目中编写测试。在我的 pages_controller_spec.rb 中，我有以下代码
require 'spec_helper'
describe PagesController do
describe "GET 'contact'" do
it "should be successful" do
get 'contact'
response.should be_success
end
end
end
当我运行命令时rspec spec/出现以下错误
DEPRECATION WARNING: The InstanceMethods module inside ActiveSupport::Concern will be no longer included automatically. Please define instanc\
e methods directly in RSpec::Rails::SetupAndTeardownAdapter instead. (called from <top (required)> at /home/kris/development/rails_projects/s\
ample_app/spec/controllers/pages_controller_spec.rb:3)
DEPRECATION WARNING: The InstanceMethods module inside ActiveSupport::Concern will be no longer included automatically. Please define instanc\
e methods directly in RSpec::Rails::TestUnitAssertionAdapter instead. (called from <top (required)> at /home/kris/development/rails_projects/\
sample_app/spec/controllers/pages_controller_spec.rb:3)
DEPRECATION WARNING: The InstanceMethods module inside ActiveSupport::Concern will be no longer included automatically. Please define instanc\
e methods directly in RSpec::Rails::ViewRendering instead. (called from <top (required)> at /home/kris/development/rails_projects/sample_app/\
spec/controllers/pages_controller_spec.rb:3)
DEPRECATION WARNING: The InstanceMethods module inside ActiveSupport::Concern will be no longer included automatically. Please define instanc\
e methods directly in RSpec::Rails::ControllerExampleGroup instead. (called from <top (required)> at /home/kris/development/rails_projects/sa\
mple_app/spec/controllers/pages_controller_spec.rb:3)
Failures:
1) PagesController GET 'contact' should be successful
Failure/Error: Unable to find matching line from backtrace
undefined method `run_all' for []:Array
# /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/hooks.rb:116:in `run_hook_filtered'
# /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/example_group.rb:174:in `eval_before_alls'
# /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/example_group.rb:229:in `run'
# /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/command_line.rb:26:in `block (2 levels) in run'
# /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/command_line.rb:26:in `map'
# /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/command_line.rb:26:in `block in run'
# /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/reporter.rb:11:in `report'
# /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/command_line.rb:23:in `run'
# /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/runner.rb:55:in `run_in_process'
# /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/runner.rb:46:in `run'
# /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/runner.rb:10:in `block in autorun'
Finished in 0.00028 seconds
1 example, 1 failure
/home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/hooks.rb:116:in `run_hook_filtered': undefined method `run_all' for\
[]:Array (NoMethodError)
from /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/example_group.rb:213:in `eval_after_alls'
from /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/example_group.rb:236:in `run'
from /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/command_line.rb:26:in `block (2 levels) in run'
from /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/command_line.rb:26:in `map'
from /home/kris/.rvm/gems/ruby-1.9.3-p194/gems/rspec-core-2.0.1/lib/rspec/core/command_line.rb:26:in `block in run'
是什么导致了这个错误，我该如何解决？
请帮忙谢谢。