Question

我正在为application_controller.rb中的方法编写测试，并且无法编写正确的测试。该应用程序基于Rails 3.2.17。

object.rb

def previously_purchased?
  return JSON.parse(self.features)['key']['previously_purchased'] if self.features
end

application_controller.rb

def include_bar?
  url_param = params[:keyword] || cookies[:keyword]
  @keyword_object = Object.find_by_url(url_param)
    if @keyword_object.previously_purchased? && !cookies[:prior_purchase] 
      @keyword_object = nil
      return
    end
end

factories.rb

factory: object do
  url_param 'TEST'
end

application_controller_spec.rb

#this was the most recent test I tried

context 'URL parameter keyword is present or keyword cookie is present' do
  context 'object is displayed only to previously purchased' do
    before(:each) do
      @saved_object = create :object
      @other_object = JSON.parse(@saved_object.features)
      @other_object['key']['previously_purchased'] = true
      @new_object = @other_object.to_json
      request.cookies[:prior_purchase] = 'sub'
      get :index
   end

    it 'finds object' do
      expect(assigns(:keyword_object)).to be_nil
    end
  end
end

这会返回以下错误

Failure/Error: @other_object = JSON.parse(@saved_nanobar.features)
TypeError: no implicit conversion of nil into String

这是有道理的，因为我无法将之前的值设置为true。

我也试过

context 'object is displayed only to previously purchased' do
  before(:each) do
     @saved_object = create :object
     @saved_object.features['key']['previously_purchased'] = true
     request.cookies[:prior_purchase] = 'sub'
     get :index
  end

  it 'finds object' do
    expect(assigns(:keyword_object)).to be_nil
  end
end

Failure/Error: @saved_object.features['key']['previously_purchased'].to_json = true
NoMethodError: undefined method []＆＃39;为零：NilClass`

我有点理解，但不足以修复我的测试。我可能在形成和写出我的问题时遗漏了一个结尾或其他语法，所以请耐心等待。

这一直困扰着我，我很感激任何帮助。我无法找到资源来帮助我进一步指导。如果您需要我修改/澄清我的问题或需要更多信息，请告诉我，我会对此有所了解。

Answer 1

您的object.features需要包含JSON。像这样设置你的对象：

@saved_object = create(
  :object, features: "{ \"key\": { \"previously_purchased\": true} }"
)

Answer 2

如果列保存为JSON，您应该使用serialize，这将处理所有混乱：

model = MyModel.new
model.features = { key: { previously_purchased: true } }
model.save

然后您可以将其作为任何其他结构进行操作，而无需手动de或重新序列化：

def previously_purchased?
  if (self.features)
    !!self.features.dig('key', 'previously_purchased')
  else
    false
  end
end

然后你可以这样做：

!!

使用双重否定（//.each because there can be multiple thumbnails in case of multiple uploads $('img[data-dz-thumbnail]').each(function(i, img){ var imgSrc = $(this).attr('src'); console.log(imgSrc); });）强制该值作为布尔值以及Ruby 2.3.1 dig方法来导航哈希值。

Rspec Rails在JSON对象中设置值

2 个答案: