more tests for sessions

lib/sinatra/base.rb

@@ -1232,6 +1232,7 @@ module Sinatra
       # an instance of this class as end point.
       def build(*args, &bk)
         builder = Rack::Builder.new
+        setup_sessions builder
         builder.use Rack::CommonLogger    if logging?
         builder.use Rack::MethodOverride  if method_override?
         builder.use ShowExceptions        if show_exceptions?

test/helper.rb

@@ -25,6 +25,12 @@ class Sinatra::Base
   include Test::Unit::Assertions
 end
 
+class Rack::Builder
+  def include?(middleware)
+    @ins.any? { |m| p m ; middleware === m }
+  end
+end
+
 Sinatra::Base.set :environment, :test
 
 class Test::Unit::TestCase

test/helpers_test.rb

@@ -255,6 +255,35 @@ class HelpersTest < Test::Unit::TestCase
       follow_redirect!
       assert_equal 'hi bar', body
     end
+
+    it 'inserts session middleware' do
+      mock_app do
+        enable :sessions
+        get '/' do
+          assert env['rack.session']
+          assert env['rack.session.options']
+          'ok'
+        end
+      end
+
+      get '/'
+      assert_body 'ok'
+    end
+
+    it 'sets a default session secret' do
+      mock_app do
+        enable :sessions
+        get '/' do
+          secret = env['rack.session.options'][:secret]
+          assert secret
+          assert_equal secret, settings.session_secret
+          'ok'
+        end
+      end
+
+      get '/'
+      assert_body 'ok'
+    end
   end
 
   describe 'mime_type' do