Ruby on rails 使用Rspec测试控制器（模型已验证附件的存在）

我在以下型号上运行rspec测试时遇到问题：

class Sound < ActiveRecord::Base
  belongs_to :user

  # for paperclip
  has_attached_file :sound_file

  # do not create a sound unless a sound file
  # is present
 validates_attachment_presence :sound_file
end

以下是我在sounds\u controller\u spec.rb文件中首次编写的内容：

   describe "POST #create" do

     it 'creates a new sound' do 
       tester_sound = FactoryGirl.create(:sound,
                                     :sound_name => 'test',
                                     :sound_file => File.open('/Users/christopherspears/wdi/83746__braffe2__pen-writing.wav'))
       post :create, sound: tester_sound
       expect(Sound.last.sound_name).to eq(tester_sound[:sound_name])
     end
  end

我收到了以下错误消息：

  1) SoundsController POST #create creates a new sound
     Failure/Error: post :create, sound: tester_sound
     NoMethodError:
       undefined method `permit' for "54":String
       # ./app/controllers/sounds_controller.rb:53:in `sound_params'
       # ./app/controllers/sounds_controller.rb:16:in `create'
       # ./spec/controllers/sounds_controller_spec.rb:39:in `block (3 levels) in <top     (required)>'

不幸的是，这带来了另一个错误：

Failures:

  1) SoundsController POST #create creates a new sound
     Failure/Error: post :create, sound: tester_hash
     Paperclip::AdapterRegistry::NoHandlerError:
       No handler found for "#<File:0x007ff603de0868>"
     # ./app/controllers/sounds_controller.rb:16:in `create'
    # ./spec/controllers/sounds_controller_spec.rb:48:in `block (3 levels) in <top (required)>'

有什么建议吗？似乎用validates_attachment_presence测试模型的控制器将是一个挑战

更新

我现在正在尝试一种不同的方法

let(:valid_attributes) { { "sound_name" => "test", "sound_file" => File.new } }
let(:valid_session) { {} }

describe "POST #create" do 
    it 'creates a new sound' do
      sound = FactoryGirl.create(:sound => valid_attributes)
      expect { sound.sound_name }.to eq("test")
    end
end

好吧，至少我得到了不同的错误信息：

  1) SoundsController POST #create creates a new sound
     Failure/Error: post :create, sound: tester_sound
     NoMethodError:
       undefined method `permit' for "54":String
       # ./app/controllers/sounds_controller.rb:53:in `sound_params'
       # ./app/controllers/sounds_controller.rb:16:in `create'
       # ./spec/controllers/sounds_controller_spec.rb:39:in `block (3 levels) in <top     (required)>'

失败：

  1) SoundsController POST #create creates a new sound
     Failure/Error: let(:valid_attributes) { { "sound_name" => "test", "sound_file" => File.new } }
     ArgumentError:
       wrong number of arguments (0 for 1..3)
       # ./spec/controllers/sounds_controller_spec.rb:4:in `initialize'
       # ./spec/controllers/sounds_controller_spec.rb:4:in `new'
       # ./spec/controllers/sounds_controller_spec.rb:4:in `block (2 levels) in <top (required)>'
       # ./spec/controllers/sounds_controller_spec.rb:38:in `block (3 levels) in <top (required)>'

1）声音控制器POST#创建新声音
失败/错误：let（：valid_attributes）{{{“sound_name”=>“test”，“sound_file”=>file.new}
参数错误：
参数数目错误（0表示1..3）
#./spec/controllers/sounds\u controller\u spec.rb:4:in'initialize'
#./spec/controllers/sounds\u controller\u spec.rb:4:in'new'
#./spec/controllers/sounds\u controller\u spec.rb:4:in'block（2层）in'
#./spec/controllers/sounds\u controller\u spec.rb:38:in'block（3层）in'

---

不确定是什么导致了这种情况…

post

期望其参数为

nil

一个散列或字符串，如下所示（取自），这解释了第一种方法不起作用的原因

  # Simulate a GET request with the given parameters.
  #
  # - +action+: The controller action to call.
  # - +parameters+: The HTTP parameters that you want to pass. This may
  #   be +nil+, a hash, or a string that is appropriately encoded
  #   (<tt>application/x-www-form-urlencoded</tt> or <tt>multipart/form-data</tt>).
  # - +session+: A hash of parameters to store in the session. This may be +nil+.
  # - +flash+: A hash of parameters to store in the flash. This may be +nil+.
  #
  # You can also simulate POST, PATCH, PUT, DELETE, HEAD, and OPTIONS requests with
  # +post+, +patch+, +put+, +delete+, +head+, and +options+.
  #
  # Note that the request method is not verified. The different methods are
  # available to make the tests more expressive.
  def get(action, *args)
    process(action, "GET", *args)
  end

  # Simulate a POST request with the given parameters and set/volley the response.
  # See +get+ for more details.
  def post(action, *args)
    process(action, "POST", *args)
  end

#使用给定参数模拟GET请求。
#
#-+操作+：要调用的控制器操作。
#-+参数+：要传递的HTTP参数。今年五月
#be+nil+、哈希或经过适当编码的字符串
#（应用程序/x-www-form-urlencoded或多部分/表单数据）。
#-+会话+：要存储在会话中的参数散列。这可能是+nil+。
#-+闪存+：存储在闪存中的参数散列。这可能是+nil+。
#
#您还可以使用模拟POST、PATCH、PUT、DELETE、HEAD和OPTIONS请求
#+post+、+patch+、+put+、+delete+、+head+和+options+。
#
#请注意，请求方法未经验证。不同的方法是
#可用于使测试更具表现力。
def get（操作，*args）
流程（操作，“获取”、*args）
结束
#使用给定参数模拟POST请求并设置/截取响应。
#有关更多详细信息，请参阅+get+。
def post（操作，*args）
过程（操作，“POST”、*参数）
结束

---

至于您的第二种方法，我认为它会失败，因为曲别针希望

：sound_file

成为

ActionDispatch:：Http:：UploadedFile

的一个实例，如

Great！谢谢关于在Rspec中模拟ActionDispatch:：Http:：UploadedFile实例有什么建议吗？我一直试图在网上找到一些东西，但没有成功。

  1) SoundsController POST #create creates a new sound
     Failure/Error: let(:valid_attributes) { { "sound_name" => "test", "sound_file" => File.new } }
     ArgumentError:
       wrong number of arguments (0 for 1..3)
       # ./spec/controllers/sounds_controller_spec.rb:4:in `initialize'
       # ./spec/controllers/sounds_controller_spec.rb:4:in `new'
       # ./spec/controllers/sounds_controller_spec.rb:4:in `block (2 levels) in <top (required)>'
       # ./spec/controllers/sounds_controller_spec.rb:38:in `block (3 levels) in <top (required)>'

  # Simulate a GET request with the given parameters.
  #
  # - +action+: The controller action to call.
  # - +parameters+: The HTTP parameters that you want to pass. This may
  #   be +nil+, a hash, or a string that is appropriately encoded
  #   (<tt>application/x-www-form-urlencoded</tt> or <tt>multipart/form-data</tt>).
  # - +session+: A hash of parameters to store in the session. This may be +nil+.
  # - +flash+: A hash of parameters to store in the flash. This may be +nil+.
  #
  # You can also simulate POST, PATCH, PUT, DELETE, HEAD, and OPTIONS requests with
  # +post+, +patch+, +put+, +delete+, +head+, and +options+.
  #
  # Note that the request method is not verified. The different methods are
  # available to make the tests more expressive.
  def get(action, *args)
    process(action, "GET", *args)
  end

  # Simulate a POST request with the given parameters and set/volley the response.
  # See +get+ for more details.
  def post(action, *args)
    process(action, "POST", *args)
  end