Added missing require statements in tests to run independently.

Now you can run all test files individually, because each now correctly
requires everything it needs.

Author: Tobias Haagen Michaelsen

test/test_association.rb

@@ -1,5 +1,6 @@
 require "minitest/autorun"
 require "openid/association"
+require "openid/protocolerror"
 
 module OpenID
   class AssociationTestCase < Minitest::Test

test/test_associationmanager.rb

@@ -1,10 +1,12 @@
 require "minitest/autorun"
+require "testutil"
 require "openid/consumer/associationmanager"
 require "openid/association"
 require "openid/dh"
 require "openid/util"
 require "openid/cryptutil"
 require "openid/message"
+require "openid/protocolerror"
 require "openid/store/memory"
 require "util"
 require "time"

test/test_discovery_manager.rb

@@ -1,5 +1,5 @@
 require 'minitest/autorun'
-require 'openid/consumer/discovery_manager'
+require 'openid/consumer'
 require 'testutil'
 
 module OpenID

test/test_pape.rb

@@ -2,7 +2,7 @@
 require 'openid/extensions/pape'
 require 'openid/message'
 require 'openid/server'
-require 'openid/consumer/responses'
+require 'openid/consumer'
 
 module OpenID
   module PAPETest