rspec users - Jan 2009 - [RSpec] Error when returning multiple values from a stub

Hey guys. I''ve just found some odd behaviour within RSpec 1.1.12 , and
would like to know whether this is a bug, or I''m doing something wrong.

When I give multiple return values to a stub, like this:
   SubtitleFile.stub!(:new).and_return @sf1, @sf2
RSpec complains:
   Mock ''SubtitleFile_1001'' received unexpected message :size
with (no
args)

However, if I break that into two stubs, like this:
   SubtitleFile.stub!(:new).and_return @sf1
   SubtitleFile.stub!(:new).and_return @sf2
the spec passes.

I''ve posted a more concrete example here:
http://gist.github.com/53389

In code pane #2, if I comment line 13 and uncomment lines 14 and 15,  
the spec passes.

Any idea what''s going on? Thanks for your help,
Nick

On 27/01/2009, at 11:03 AM, Nick Hoffman wrote:
> Hey guys. I''ve just found some odd behaviour within RSpec 1.1.12 ,
> and would like to know whether this is a bug, or I''m doing
something
> wrong.
>
> When I give multiple return values to a stub, like this:
>  SubtitleFile.stub!(:new).and_return @sf1, @sf2
> RSpec complains:
>  Mock ''SubtitleFile_1001'' received unexpected message
:size with (no
> args)
>
> However, if I break that into two stubs, like this:
>  SubtitleFile.stub!(:new).and_return @sf1
>  SubtitleFile.stub!(:new).and_return @sf2
> the spec passes.
>
> I''ve posted a more concrete example here:
> http://gist.github.com/53389
>
> In code pane #2, if I comment line 13 and uncomment lines 14 and 15,  
> the spec passes.
>
> Any idea what''s going on? Thanks for your help,
> Nick
I just realised that breaking
   SubtitleFile.stub!(:new).and_return @sf1, @sf2
into two stubs causes the second call to #stub! to override the first,  
which obviously causes problems, and thus doesn''t provide an interim  
solution.

-Nick

On 27/01/2009, at 11:03 AM, Nick Hoffman wrote:
> Hey guys. I''ve just found some odd behaviour within RSpec 1.1.12 ,
> and would like to know whether this is a bug, or I''m doing
something
> wrong.
>
> When I give multiple return values to a stub, like this:
>  SubtitleFile.stub!(:new).and_return @sf1, @sf2
> RSpec complains:
>  Mock ''SubtitleFile_1001'' received unexpected message
:size with (no
> args)
>
> However, if I break that into two stubs, like this:
>  SubtitleFile.stub!(:new).and_return @sf1
>  SubtitleFile.stub!(:new).and_return @sf2
> the spec passes.
>
> I''ve posted a more concrete example here:
> http://gist.github.com/53389
>
> In code pane #2, if I comment line 13 and uncomment lines 14 and 15,  
> the spec passes.
>
> Any idea what''s going on? Thanks for your help,
> Nick
I''ve managed to cut even more code from the controller and specs while
continuing to reproduce the problem:
http://gist.github.com/53389

If I change this line:
   SubtitleFile.stub!(:new).and_return @sf1, @sf2
to this:
   SubtitleFile.stub!(:new).and_return @sf1
then the problem disappears.

Why does providing a second argument to #and_return cause #size to be  
called on the "@sf1" mock?

Thanks in advance for any help with this, guys.
Nick