On Nov 14, 2011, at 6:57 PM, Patrick J. Collins wrote:
> So, I recognize that there are many different ways to accomplish what I am
> trying to do, but none of them seem to be as elegant as I would like.
>
> I have a few classes which need to have shared functionality...
>
> So I could do something like this:
>
> module NameBuilder
>
> def build_name(*args)
> args.shift.to_s + args.flatten.map {|component| "[#{component}]"}.join
> end
>
> end
>
> class Foo
> include NameBuilder
>
> def initialize(arg1, arg2)
> ...
> end
> end
>
> class Bar
> include NameBuilder
>
> def initialize(arg1, arg2)
> ...
> end
> end
>
> ...
>
> But, then I need to do something like:
>
> shared_examples "a nameable thingie" do |obj|
>
> describe "#build_name" do
>
> it "it adds the collection of arguments to the base components and formats
> them for a form element name attribute" do
> obj.build_name(:lol, :lollerskates, :roflcopter).should ==
> "lol[lollerskates][roflcopter]"
> end
>
> end
>
> end
>
> describe Foo do
> it_behaves_like "a nameable thingie", Foo.new(nil, nil)
> end
>
> describe Bar do
> it_behaves_like "a nameable thingie", Bar.new(nil, nil)
> end
>
> Which I don't like, mainly because Foo & Bar's initialize methods require
> arguments, and I am having to do (nil, nil) which seems very uncool...
Use the described class:
shared_examples "a nameable thingie" do |klass|
describe "#build_name" do
it "it adds the collection of arguments to the base components and formats
them for a form element name attribute" do
described_class.new(nil,nil).build_name(:lol, :lollerskates,
:roflcopter).should == "lol[lollerskates][roflcopter]"
end
end
end
describe Foo do
it_behaves_like "a nameable thingie"
end
describe Bar do
it_behaves_like "a nameable thingie"
end
Cheers,
David
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