From: Enrique Comba Riepenhausen <ecomba@...>
Date: 2007-05-26T04:25:59+09:00
Subject: Re: Mocking Net::HTTP

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On 25 May 2007, at 20:09, James Mead wrote:

> On 25/05/07, Enrique Comba Riepenhausen <ecomba@mac.com> wrote:
>> What would you recommend? Should I write a MockGet/Post adapter that
>> will do the job? Or is there a transparent way to change the behavior
>> of Net::HTTP without touching the adapters?
>
> You should be able to use Mocha (http://mocha.rubyforge.org) do do  
> this.
>
> Let me know if you have a specific test you need help with.
> -- 
> James.
> http://blog.floehopper.org
>

Hi James, Brian!

I've taken a look at both frameworks and the following question  
arises. If I am using my classes like the way I am using, how can I  
possibly mockup Net::HTTP?

Let me try to explain with a sample testing code (taken from one of  
the unit tests):

def test_send_through_get_adapter
    Rannel::Base.establish_connection(@adapters["get"]) # The  
configuration comes from Yaml

    sms = Rannel::Base.create_sms
    sms.from = "123124"
    sms.to = 2356556652
    sms.text = "Hello"

    assert_equal(@OK, Rannel::Base.deliver(sms))
end

The problem here is that the deliver(sms) call actually calls the  
adapter to deliver the SMS. In the case of the GetRequestAdapter (the  
one that makes the GET request) this looks like this:

def deliver(sms)
   result = ""
   Net::HTTP.start(@ip, @port) do |http|
     url = "/cgi-bin/sendsms?username=#{@user}" +
       "&password=#{@password}#{sms.to_kannel}"
     response = http.get(url)
     result = response.body
   end
   result
end

So how can I then, from the Unit Test mockup the call that is being  
made to Net::HTTP?

Thanks a lot for the help!

----
Enrique Comba Riepenhausen
ecomba@mac.com

I always thought Smalltalk would beat Java, I just didn't know it  
would be called 'Ruby' when it did.
-- Kent Beck


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