[rspec-users] How do I isolation test against different gem versions?

Brian Cardarella bcardarella at gmail.com
Sun May 23 13:55:24 EDT 2010


   Cool, this looks like it should work. My original approach was to
find something that would work under autospec but I think that might
be getting too greedy in this case. Thank-you!

- Brian

On May 23, 12:54 pm, Rick DeNatale <rick.denat... at gmail.com> wrote:
> On Sun, May 23, 2010 at 11:41 AM, Brian Cardarella
> <bcardare... at gmail.com> wrote:
> > I would like to support both ActiveRecord 2.x and ActiveModel 3.x for
> > a given library. It is not clear to me how to write tests for this. If
> > I require 'active_record' then all of the dependencies are also loaded
> > and are now in the load path as well as the Gem loaded list.
> > Considering that AR and AM share dependencies but of different
> > versions conflicts occur.
> > Is this possible? The difference in code is not enough to warrant
> > breaking into separate gems.
> I do something similar for RiCal, which works using either
> activesupport or the tzinfo gem.  I've set up rake tasks to run the
> specs with either one.
> What I do is to have an auxiliary ruby file to do the right require
> which the spec task invokes via the -r option.
> You should be able to do something similar by having the auxiliary
> files use the gem directive to specify a particular version of
> active_record.
> Have a look athttp://github.com/rubyredrick/ri_cal/tree/master/tasks/
> Particularly spec.rake and the files in the gem_loader sub directory.
> --
> Rick DeNatale
> Blog:http://talklikeaduck.denhaven2.com/
> Github:http://github.com/rubyredrick
> Twitter: @RickDeNatale
> WWR:http://www.workingwithrails.com/person/9021-rick-denatale
> LinkedIn:http://www.linkedin.com/in/rickdenatale
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