Example Spec: Using Constants and Sinatra Extensions

gistfile1.rb

require 'spec_helper'

=begin
Example One - this works
In this example, the constant (ZZZ) is set in the 
Spec, and detected in the target code. 
=end

module TestModule
  class TestClass
    def method1
      ZZZ
    end
  end
end

describe TestModule::TestClass do
  it "should recognize the CONSTANT" do
    ZZZ = "HELLO WORLD" unless defined?(ZZZ)
    obj = TestModule::TestClass.new
    obj.method1.should == ZZZ
  end
end

require 'sinatra/base'


=begin
Example Two - this doesn't work
In this example, the constant (UseOne) is set in the 
Spec, and isn't detected in the target code. 

The question is: how to make the target code detect
the constant.
=end

module Sinatra
  module TestExtension
    module Helper1
      def sayname() "Helper1"; end
    end
    module Helper2
      def sayname() "Helper2"; end
    end
    def self.registered(app)
      app.helpers defined?(UseOne) ? Helper1 : Helper2
    end
  end
end

class App < Sinatra::Base
  register Sinatra::TestExtension
end

describe App do
  it "should create a valid object" do
    obj = App.new
    obj.sayname.should == "Helper2"
  end
  it "should recognize the CONSTANT set in the Spec" do
    obj = App.new
    UseOne = true
    obj.sayname.should == "Helper1"    # <<< this fails
  end
end