rspec users - Apr 2012 - using shared_context in a global way

I have some let and before declarations that I want to define for all of my 
tests.  I can''t seem to figure out how to do this in a clean way (ie by
including a module in my Rspec config).  I don''t want to have to 
include_context for each test, I just want to run some before(:all) hooks 
and provide access to some default variables that example groups could 
override with their own let declarations.

I must be missing something because I can''t find anywhere in the docs
how I
might achieve this.  Any help is greatly appreciated.

Brad
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On Sun, Apr 1, 2012 at 11:34 PM, Bradley <bradleyrobertson at gmail.com>
wrote:
> I have some let?and before declarations that I want to define for all of my
> tests. ?I can''t seem to figure out how to do this in a clean way
(ie by
> including a module in my Rspec config). ?I don''t want to have to
> include_context for each test, I just want to run some before(:all) hooks
> and provide access to some default variables that example groups could
> override with their own let?declarations.
>
> I must be missing something because I can''t find anywhere in the
docs how I
> might achieve this. ?Any help is greatly appreciated.
There is a documented way to declare a module with let and before
declarations: http://rubydoc.info/gems/rspec-core/RSpec/Core/SharedContext.

There is also a documented way to include a module in every
ExampleGroup:
http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration#include-instance_method

There is, admittedly, no doc that says you can use these two features
together. Obviously we can''t do that for every pair of features, but
perhaps this pair is worth citing specifically. I''ll look into doing
that for the next release.

Cheers,
David

On Sunday, April 1, 2012 9:34:00 PM UTC-5, Bradley
wrote:
>
> I have some let and before declarations that I want to define for all of 
> my tests.  I can''t seem to figure out how to do this in a clean
way (ie by
> including a module in my Rspec config).  I don''t want to have to 
> include_context for each test, I just want to run some before(:all) hooks 
> and provide access to some default variables that example groups could 
> override with their own let declarations.
>
> I must be missing something because I can''t find anywhere in the
docs how
> I might achieve this.  Any help is greatly appreciated.
>
> Brad
>
Hey Brad,

You can set up global `before` hooks using `RSpec.configure` [1] [2]:

  RSpec.configure {|c| c.before(:all) { do_stuff }}

`let` is not supported in `RSpec.configure`, but you _can_ set up a global 
`let` by including it in a SharedContext module [3] and including that 
module using `config.before`:

  module MyLetDeclarations
    extend RSpec::Core::SharedContext
    let(:foo) { Foo.new }
  end
  RSpec.configure { |c| c.include MyLetDeclarations }

If you''re going to use that, you may as well put all your global stuff
in
the same module:

  module GlobalStuff
    extend RSpec::Core::SharedContext
    before(:all) { do_stuff }
    let(:foo) { Foo.new }
  end
  RSpec.configure { |c| c.include MyLetDeclarations }

HTH,
David  

[1] http://rubydoc.info/gems/rspec-core/RSpec#configure-class_method
[2] http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
[3] http://rubydoc.info/gems/rspec-core/RSpec/Core/SharedContext
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