ruby-on-rails - Rspec: Controller 中的 stub 方法

Question

我可以知道如何 stub Controller 创建方法中的方法吗？我需要为此编写规范，但我遇到了这些错误。在模型中创建新公司记录之前，我需要检查 Controller 中的 create 方法必须执行 validate_fbid 方法。

错误:

1) Companies new company create with valid information#validate_fbid should have correct parameters and return value
 Failure/Error: CompaniesController.create.should_receive(:validates_fbid).with(company)
 NoMethodError:
   undefined method `create' for CompaniesController:Class
 # ./spec/requests/companies_spec.rb:38:in `block (5 levels) in <top (required)>'

  2) Companies new company create with valid information#validate_fbid should fbid validation passed
 Failure/Error: CompaniesController.create.stub(:validates_fbid).and_return('companyid')
 NoMethodError:
   undefined method `create' for CompaniesController:Class
 # ./spec/requests/companies_spec.rb:43:in `block (5 levels) in <top (required)>'

公司 Controller

def create 
company = Company.new(params[:company])
verifyfbid = validate_fbid(company)

if verifyfbid != false
    if company.fbid.downcase == verifyfbid.downcase
        if company.save 
            @message = "New company created."
            redirect_to root_path
        else 
            @message = "Company create attempt failed. Please try again."
            render 'new' 
        end 
    else 
        @message = "Company create attempt failed. Invalid facebook id."
        render 'new' 
    end
else  
    @message = "Company create attempt failed. No such facebook id."
    render 'new'            
    end             
 end 

  private  
  def validate_fbid(company)
   uri = URI("http://graph.facebook.com/" + company.fbid)
   data = Net::HTTP.get(uri)
   username = JSON.parse(data)['username']      
   if username.nil?
    return false 
   else
    "#{username}"
   end
 end

请求/companys_spec.rb

context "#validate_fbid" do               
        #validate fbid
        let(:company){ Company.new(name:'Example Company', url: 'www.company.com', fbid: 'companyid', desc: 'Company desc' )}

        it "should have correct parameters and return value" do
            CompaniesController.create.should_receive(:validates_fbid).with(company)
                                .and_return('companyid')
        end

        it "should fbid validation passed" do               
            CompaniesController.create.stub(:validates_fbid).and_return('companyid')
            company.fbid.should_not be_nil
            company.fbid.should == 'companyid'
            company.save
            expect { click_button submit }.to change(Company, :count).by(1)
        end                                             
    end    

Answer 1

当它是测试用例的主题时，您不想 stub 该方法

context "#validate_fbid" do
  #test the function here
  #don't stub
end

当您在 Controller 中测试创建操作时，您可以 stub “validate_fbid”

describe "post create" do
   ...
   CompaniesController.any_instance.stub(:validates_fbid).and_return('companyid')
   ...
end

希望能帮助到你。