From: James Mead <jamesmead44@...>
Date: 2006-07-17T18:34:51+09:00
Subject: Re: alias new???

David Chelimsky wrote:
> On Jul 12, 2006, at 12:15 AM, Logan Capaldo wrote:
> Yes. I'm writing an acts_as_mock plugin for rails controller tests.
> Since activerecord relies on a bunch of class methods, I need to be
> able to mock them as well so I can write tests like this:
> 
>    def test_blah
>      expected = Story.new
>      Story.should_receive(:new).and_return(expected)
>      expected.should_receive(:some_message)
> 
>      get :blah
>    end
> 
> This (in theory) will allow us to run controller (functional) tests
> in isolation (i.e. no DB necessary), and therefore much faster.
> 

Sounds interesting. I've been working on something similar - a mocking 
library called Mocha (http://mocha.rubyforge.org). It's not specifically 
targetted at Rails controller tests, but I think the Stubba/AutoMocha 
parts might allow you to do what you want.

Stubba allows you to mock or stub class methods.

For AutoMocha, I alias the :new method in Mocha:MockClass 
(http://mocha.rubyforge.org/classes/Mocha/MockClass.html) and define a 
new version that delegates to method_missing which is at the heart of 
the mocking functionality. The inherited method then ensures that any 
subclasses get the original :new method back.

James.

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