如何使用rspec测试传递到rails 3中的控制器的参数? [英] how to test params passed into a controller in rails 3, using rspec?

问题描述

我们的代码:

 describe "GET show" do
   it "assigns the requested subcategory as @subcategory" do
     subcategory = Subcategory.create! valid_attributes
     get :show, :id => subcategory.id.to_s
     assigns(:subcategory).should eq(subcategory)
   end

   it "has a sort parameter in the url" do
     subcategory = Subcategory.create! valid_attributes
     get :show, {:id => subcategory.id.to_s, :params => {:sort => 'title'}}
     helper.params[:sort].should_not be_nil
   end
 end

我收到以下错误消息:

1) SubcategoriesController GET show has a sort parameter in the url
    Failure/Error: helper.params[:sort].should_not be_nil
    NameError:
      undefined local variable or method `helper' for #<RSpec::Core::ExampleGroup::Nested_4::Nested_2:0x007f81a467c848>
    # ./spec/controllers/subcategories_controller_spec.rb:54:in `block (3 levels) in <top (required)>'

如何在 rspec 中测试参数?

How can I test params in rspec?

推荐答案

get :show, {:id => subcategory.id.to_s, :params => {:sort => 'title'}}

应该

get :show, :id => subcategory.id.to_s, :sort => 'title'

除非你想传递params[:params][:sort].

还有

helper.params[:sort].should_not be_nil

应该

controller.params[:sort].should_not be_nil
controller.params[:sort].should eql 'title'

(如果你想测试一个助手，你应该写一个助手规范.)

(If you mean to test a helper, you should write a helper spec.)

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