如何使用Rspec测试控制器 - #show动作

Question

我有一个belongs_to用户的批处理模型。用户应该只能看到他们自己的Batches实例。

对于index行动，我就是这样做的：

Batch#index

context "GET index" do

  it "should get only users batches" do
    FactoryGirl.create(:batch)
    batch = FactoryGirl.create(:batch)
    batch2 = FactoryGirl.create(:batch)            
    subject.current_user.batches << batch
    get "index"
    assigns(:batches).should == subject.current_user.batches
    assigns(:batches).should_not include(batch2) 
  end

end

对于create行动，我就是这样做的：

Batch#create

context "POST create" do

  it "should save a users batch into current_user" do
    batch = subject.current_user.batches.build(name: 'bla')
    put :create, batch
    subject.current_user.batches.should include(batch)
  end

  it "should save a batch from other user into current_user" do
    batch = subject.current_user.batches.build(name: 'bla')
    batch2 = FactoryGirl.create(:batch)
    put :create, batch
    subject.current_user.batches.should_not include(batch2)
  end

end

但是，我不确定如何在show操作中测试此行为。这就是我正在做的事情：

Batch#show

context "GET show/:id" do

  it "should show batches from user" do
    batch_params = FactoryGirl.build(:batch)
    batch = subject.current_user.batches.create(batch_params)
    get :show, id: batch.id
    response.should redirect_to(batch)
  end

  it "should not show batches from other users" do
    batch = subject.current_user.batches.create(name: 'bla')
    batch2 = FactoryGirl.create(:batch)
    get :show, id: batch2.id
    response.should redirect_to(:batches)
  end

end

我遇到了以下失败：

Failures:

  1) BatchesController GET show/:id should not show batches from other users
     Failure/Error: response.should redirect_to(:batches)
       Expected response to be a <:redirect>, but was <200>
     # ./spec/controllers/batches_controller_spec.rb:66:in `block (3 levels) in <top (required)>'

  2) BatchesController GET show/:id should show batches from user
     Failure/Error: batch = subject.current_user.batches.create(batch_params)
     NoMethodError:
       undefined method `stringify_keys' for #<Batch:0x00000005d0ef80>
     # ./spec/controllers/batches_controller_spec.rb:58:in `block (3 levels) in <top (required)>'

我做错了什么？我该如何测试view操作的这种行为？

Answer 1

get :show, id: batch.id

不会重定向它会渲染显示，因此响应代码200，可能是你可以检查

response.should render_template :show 

Answer 2

第一次失败，“不应该显示来自其他用户的批次”，看起来它可能反映了控制器中的实际问题。您是否也在浏览器中对此进行了测试，以确认问题出在测试中而不是实际代码中？

在另一个测试中，我不太确定问题究竟是什么，但我可能会建立这样的批处理：

batch = FactoryGirl.create(:batch, user: subject.current_user)

尝试一下，看看它是否解决了。