Allows for yeilding the manager when it is created.

lib/rack-auth/manager.rb

@@ -12,9 +12,14 @@ class Manager
       # :api: public 
       def initialize(app, config = {})
         @app = app
-        @failure_app = config[:failure_app]
         @config = config
-      end
+        yield self if block_given?
+
+        # should ensure there is a failure application defined.
+        @failure_app = config[:failure_app] if config[:failure_app]
+        raise "No Failure App provided" unless @failure_app
+        self
+      end 
 
       # :api: private
       def call(env) # :nodoc:

spec/helpers/request_helper.rb

@@ -1,5 +1,8 @@
 module Rack::Auth::Spec
   module Helpers
+
+    FAILURE_APP = lambda{|e|[401, {"Content-Type" => "text/plain"}, ["You Fail!"]] }
+
     def env_with_params(path = "/", params = {})
       method = params.fetch(:method, "GET")
       Rack::MockRequest.env_for(path, :input => Rack::Utils.build_query(params),
@@ -10,10 +13,14 @@ def env_with_params(path = "/", params = {})
     def setup_rack(app = nil, opts = {}, &block)
       app ||= block if block_given?
       opts[:default] ||= [:password]
-      opts[:failure_app] ||= failure_app
+      # opts[:failure_app] ||= failure_app
       Rack::Builder.new do 
         use Rack::Auth::Spec::Helpers::Session
-        use Rack::Auth::Manager, opts
+        use Rack::Auth::Manager, opts do |manager|
+          manager.failure_app = Rack::Auth::Spec::Helpers::FAILURE_APP
+          puts manager.inspect
+
+        end
         run app
       end
     end
@@ -23,7 +30,7 @@ def valid_response
     end
 
     def failure_app
-      lambda{|e|[401, {"Content-Type" => "text/plain"}, ["You Fail!"]] }
+      Rack::Auth::Spec::Helpers::FAILURE_APP
     end
 
     def success_app