Intractable Complexity

The upgrade guide to 0.9.x should definitely be followed, but in addition to that, I give you a modest list of gotchas that happened to burn me:

• Assigns are only set when using get|post|put|delete|head methods in controllers
• A bug with the --drb option runs tests twice (patch available)
• Spec::Rails::Runner::EvalContext is now Spec::Rails::DSL::EvalContext
• Exceptions inside controller actions can no longer be caught in the specs

# spec/spec_helper.rb
module Spec
  module Rails
    module DSL
      class FunctionalEvalContext
        def ivars(ivar_name)
          instance_variable_get(("@"+ivar_name.to_s).to_sym)
        end
      end
    end
  end
end

controller.send :run_filter
assigns[:filter_ran].should be_true # no longer works in 0.9.x

controller.send :run_filter
ivars(:filter_ran).should be_true # works!

module Spec
  module Rails
    module Runner
      class EvalContext
        include MyCustomMatchers
        def my_handy_helper
           #...
        end
      end
    end
  end
end

Protip: you can use :<tab> to quickly write out a bunch of hash pairs in Ruby. Rails coding especially tends to involve writing a fair amount of hash pairs. The default snippet makes this a lot more pleasant (what big effect such a small snippet can have).

However, for some odd reason, the last tab-stop in the default snippet is just a comma. I can’t imagine what purpose that has – it would be much nicer to first select the comma (so you can just delete it and move on to something else) and have another tab-stop after that that, right next to another double-colon so you can make a new pair instantly. So… here it is:

:${1:key} => ${2:"${3:value}"}${4:, :$5}