测试使用Cookie的Rails助手

Question

I have a method in app/helpers/application_helper.rb that calls cookies . Which is totally allowed; this method is working wonderfully in my dev environment and knows what I mean when I say cookies .

I am testing this helper with TestUnit (in test/unit/helpers/application_helper_test.rb ) and getting the error

NoMethodError: undefined method `cookies' for nil:NilClass

Even for four tests that do not set cookies . This has nothing to do with needing to 'set cookies in the test using cookie_jar ', because the issue isn't that I'm setting cookies and my helper isn't recognizing them, the issue is that the object cookies is being called on is nil .

I wasn't sure which controller object cookies was being called on, so I p 'd them all and found that, out of @controller , @request , and @response , only @response is nil. So I tried setting it to "cow". And indeed! My error changes:

NoMethodError: undefined method `cookies' for "cow":String

So it seems like I just need to stub out @response . How do I do that?

Or am I way out of line here and overcomplicating things?

Answer 1

将此设置添加到使用此方法的所有测试中：

@response.stubs(:cookies).returns({})