Rspc & stubbing out chained methods

rubyonrails-talk
1

I've just started reading up on Rspec and am trying to write a few specs to test methods in my models. Consider the following class Users has_many :items

def state_of_last_item?    case items.active.last.state #uses a named scope    when 0      # do something    when 1      # do something    when 2      # do something    end end end

I want to write the spec to test that the 'do somethings' are working as expected. How do I stub out the bit with the named scope? I thought it would be something like: @user.stub!('items.active.last.state').and_return(0) but this doesn't work. What is the correct way to stub out something like this? Thanks TC

2

You need a stub for each link in the chain, so to speak. You can do it all inline

@user = stub(“user”, :items => stub(“items”, :active => stub(“active”, :last => stub(“last”, :state => 0))))

or you can create stubs first and then use them together.

last = stub(“last”, :state => 0) active = stub(“active”, :last => last) items = stub(“items”, :active => active)

@user = stub(“user”, :items => items)

Regards, Craig

3

Thanks for that. I was hoping that there would be a way to do it without stubbing out each link.