On 16 Sep 2008, at 14:28, David Chelimsky wrote:
Hi Matt,
On Mon, Sep 15, 2008 at 12:28 PM, Matt Wynne <[EMAIL PROTECTED]>
wrote:
It's all gone a bit meta.
I've started noticing patterns in my specs, where I want more than
one class
to satisfy a specific bunch of behaviours.
I know I can use it_should_behave_like and this works in simple
cases, but I
want to be able to iterate around an array of values and generate
a my bunch
of it "should ..." specs for each item in the array.
I know I can do this by going
describe "the cheese factory"
[:cheddar, :brie, :lancashire].each do |cheese|
it "should create a valid piece of #{cheese}" do
Factory.create(cheese).should be_valid
end
it "should create a piece of #{cheese} with valid packaging" do
... etc
end
end
...but what if I want to specify other factories too, all of which
conform
to the it blocks
it blocks == code examples
I specified above? (e.g. a ToyFactory that creates valid
toys with valid packaging). How can I factor that spec logic out?
I tried putting the content of the (do |cheese|) block into a
method, but
ruby doesn't seem to be able to see that method when the describe
block
runs
How are you doing that? Where are you putting the method? How are you
calling it?
I guess I need to maybe patch it into some RSpec class instead? Or
put it into a module and include it? Am I going down the wrong
lines? is
there an easier way to achieve this?
Kind of depends on how you want the specs themselves to look. One
approach is to wrap class level methods in a module and extend the
example group with that module. This could, for example, give you
example groups that look like this:
describe CheeseFactory do
extend FactoryExamples
it_should_create :cheddar, :brie, :lancashire
end
describe GameFactory do
extend FactoryExamples
it_should_create :chess, :clue, :mastermind
end
Here's some code (that doesn't do much but actually works) to
demonstrate:
http://pastie.org/273290
Bingo! My misunderstanding of include vs extend was to blame, I think.
Thanks as usual.
cheers,
Matt
----
http://blog.mattwynne.net
http://songkick.com
In case you wondered: The opinions expressed in this email are my own
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