ruby-on-rails – 未定义的方法’env’为nil：NilClass

require "spec_helper"

describe "/api/v1/projects",:type => :api do
  context "projects viewable by this user" do
   it "JSON" do
   end
  end
end

它包含了很多,但我删除了很多行在尝试找不到这样的错误：

Failure/Error: Unable to find matching line from backtrace
NoMethodError: undefined method `env' for nil:NilClass

这段代码来自Ryan Bigg的“Rails 3 in Action”.唯一的其他文件包括：spec / support / api / helper.rb

module ApiHelper
  include Rack::Test::Methods

  def app
   Rails.application
  end
end

RSpec.configure do |c|
  c.include ApiHelper,:type => :api
end

我一直在尝试google过去1小时的错误,最近发现的是this,结果我删除了使用Devise :: Test_Helpers的代码.可悲的是,它还是不行.

任何帮助将不胜感激.非常感谢.

堆栈跟踪

# /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/devise-2.0.4/lib/devise/test_helpers.rb:24:in `setup_controller_for_warden'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-rails-2.8.1/lib/rspec/rails/adapters.rb:15:in `block (2 levels) in setup'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:35:in `instance_eval'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:35:in `run_in'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:70:in `block in run_all'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:70:in `each'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:70:in `run_all'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:368:in `run_hook'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:292:in `block in run_before_each_hooks'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:292:in `each'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:292:in `run_before_each_hooks'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example.rb:217:in `run_before_each'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example.rb:79:in `block in run'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example.rb:173:in `with_around_hooks'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example.rb:77:in `run'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:355:in `block in run_examples'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:351:in `map'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:351:in `run_examples'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:337:in `run'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:338:in `block in run'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:338:in `map'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:338:in `run'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/command_line.rb:28:in `block (2 levels) in run'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/command_line.rb:28:in `map'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/command_line.rb:28:in `block in run'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/reporter.rb:34:in `report'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/command_line.rb:25:in `run'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/runner.rb:80:in `run_in_process'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/runner.rb:69:in `run'
 # /home/prakhar/.rvm/gems/ruby-1.9.2-p290/gems/rspec-core-2.8.0/lib/rspec/core/runner.rb:10:in `block in autorun'