On Tue, Feb 23, 2010 at 3:41 PM, Matt Wynne <[email protected]> wrote:
>
> On 23 Feb 2010, at 17:30, Scott Taylor wrote:
>
>>
>> Has there been any development on shared helpers / it_should_behave_like
>> feature in rspec?
>>
>> I forget the reasons, but I remember a patch for something like this was
>> rejected:
>>
>> it_should_behave_like "an_entry", :locals => { :entry => Entry.new }
>>
>> OR:
>>
>> before do
>> @entry = Entry.new
>> end
>>
>> it_should_behave_like "an_entry", :locals => lambda {
>> {
>> :entry => @entry
>> }
>> }
>>
>> Is there any code which now deals with the variable passing issue in
>> rspec?
>>
>> Best,
>>
>> Scott
>
> FWIW, what I've done in this situation is expect that the ExampleGroup I've
> mixed the shared behaviour into to define a method, and call that from the
> shared examples - if it's not defined you'll find out pretty quickly.
> Another approach is to just expect the @variable to be set:
>
> describe "an entry" do
> before
> �...@entry or raise("You need to set @entry to use this shared example
> group")
> end
> end
>
> It's not great, but it makes the shared example group a little more
> self-documenting than if you just shared the instance variable without the
> check.
>
> cheers,
> Matt
We do what Matt does, plus we document on top of the shared examples
the interface the example group needs:
# You need to provide an <invalid_record> method that returns a record without
# saving, in an invalid state, for this mixin to work.
shared_examples_for "a model that can disable validations" do
context "when checking for a record's validity" do
it "always returns true if you disabled validations" do
described_class.disable_validations!
invalid_record.should be_valid
end
it "falls back to the usual behavior if you enable validations" do
described_class.enable_validations!
invalid_record.should_not be_valid
end
end
...
end
describe User do
let :invalid_record do
User.make_unsaved(:invalid)
end
it_should_behave_like "a model that can disable validations"
end
Cheers,
-foca
> http://mattwynne.net
> +447974 430184
>
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