On Jul 9, 2007, at 5:42 PM, David Chelimsky wrote:


As opposed to getting into complicated mocking scenarios, consider
abstracting this logic into your model:
http://blog.caboo.se/articles/2007/6/19/rspec-notes-from-the- trenches-2

Agreed that this is a good approach in terms of dealing w/ rails
models.

I generally agree with this, no doubt. But when the it comes to big apps and bigger test/spec suites, all that database communication (and fixtures creation/teardown), slows testruns downs and that lowers the chances of people running them regularly. There's of course many different ways of dealing with this (another I'm doing is reworking the way fixtures work), but in a way I see it the same way as I do with, say, XML-RPC models (or REST, or other networking related models) that I maybe I don't really need to test communication with the network backend all the time, but more interested in that my model implementation behave like I expect them to when it comes to sending data to the client. Of course this starts to turn into a slightly slippery slope when it comes to rails since it relies so much its direct database mapping.

I'm still trying this approach out along with other things to cut down specs runtime , and I eagerly await the day it bites me in the arse. :)

As for the question of isolating specific key/value pairs in a
hash, you could do this:

obj.should_receive(:message) do |*args|
  hash = args.pop
  hash[interesting_key].should == expected_value
end

It's not pretty, but it works.

The other thing you might consider is a custom matcher. Something like:

obj.should_receive(:message).with(has_key_value(key, value))

The mock framework can use these just as the expectation framework -
though mocks rely on == instead of matches.

Cheers, I didn't know that you could do custom matchers for those kind of expectations too.

JS


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