require 'test_helper' describe "Surrounded", 'without context' do let(:jim){ User.new("Jim") } it "never has context roles" do assert_nil jim.send(:context).role?('anything') end end describe "Surrounded" do let(:jim){ User.new("Jim") } let(:guille){ User.new("Guille") } let(:external_user){ User.new("External User") } let(:context){ TestContext.new(jim, guille) } it "has access to objects in the context" do assert context.access_other_object end it "prevents access to context objects for external objects" do assert_raises(NoMethodError){ external_user.user } end end class UnsurroundedObject attr_accessor :name end describe "Surrounded", "added to an existing object" do it "allows the object to store its context" do thing = UnsurroundedObject.new thing.name = 'Jim' assert_raises(NoMethodError){ thing.send(:store_context) } thing.extend(Surrounded) other = User.new('Guille') context = TestContext.new(thing, other) assert context.access_other_object end end module SpecialSurrounding include Surrounded end describe "Surrounded", "added to an object through another module" do it "allows the object to store its context" do object = Array.new object.extend(SpecialSurrounding) assert object.respond_to?(:context, true) end end