Does a mock model have to satisfy contraints

Testing RSpec
1

I am a little confused to the what happens with the following:

before do
@site = mock_model(Site, :to_param => “1”)
Site.stub!(:new).and_return(@site)
end

def post_with_successful_save
@site.should_receive(:save).and_return(true)
post :create, :site => {}
end

I understand that the “@site.should_receive(:save)…” places a check to
whether the method is called and that it should return “true”, but will
the actual method within the model be called, or does it also create a
stub to allow for the separation with the model.

The reason that I ask is that in the following line “post :create, …”
there are no params passed into the post, yet is passes even though
there are many validates_presence_of constraints within the model.

The reason for the confusion is that in a previous project I had
failures on many of the auto-generated controller tests and the only way
to make them pass was to ensure all the controller post and put tests
used a model that satisfied all the constraints. On the current project
all the tests are passing when using mock models with no attributes set.

Thanks for the help

2

On 10/16/07, Chris O. [email protected] wrote:

end

I understand that the “@site.should_receive(:save)…” places a check to
whether the method is called and that it should return “true”

This is a bit tricky. What you’re setting up here (which is true of
message expectations in general, not must mock_model) is an
expectation that @site will receive the message :save and that when it
does receive it, you are instructing it to return true (not expecting
that the real :save method returns true).

The real :save method is not called.

Make sense?

3

That is what I thought (and was hoping for)

Thanks David.

This is a bit tricky. What you’re setting up here (which is true of
message expectations in general, not must mock_model) is an
expectation that @site will receive the message :save and that when it
does receive it, you are instructing it to return true (not expecting
that the real :save method returns true).

The real :save method is not called.

Make sense?