On Jul 14, 2010, at 4:20 PM, Matt Wynne wrote:
>
> You can do this, by using a test spy to remember the value of foo passed into
> the stubbed constructor and then later comparing it:
>
> let(:foo) { Foo.new }
>
> it "should allocate a helper class Foo" do
> actual_foo = Bar.should_receive(:new) do |the_foo|
> the_foo
> end
> actual_foo.should == foo
> end
>
> Whether you want to do this though, is another question. I think it's a bit
> of an anti-pattern personally. I'd probably let acceptance tests catch
> mistakes in this kind of thing, and concentrate on speccing the interaction
> between Foo and Bar once you've got the instances spun up.
For those following along at home, this exact technique did not work. The
+actual_foo+ variable was holding some mock value instead of the real self
value.
I fixed it by assigning to a variable inside the block that had been defined
outside the block (avoiding block scope issues).
let(:foo) { Foo.new }
it "should allocate a helper class Foo" do
actual_foo = nil
Bar.should_receive(:new) do |the_foo|
actual_foo = the_foo
end
actual_foo.should == foo
end
This succeeds.
Thanks to all for your help.
cr
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