Fix failing tests.

Gemfile

@@ -2,7 +2,7 @@ source "http://rubygems.org"
 
 gemspec
 
-gem "rails", "3.0.0"
+gem "rails"
 gem "webrat", "0.7.1"
 gem "mocha", :require => false
 gem "oa-oauth", :require => "omniauth/oauth"
@@ -14,9 +14,8 @@ end
 
 platforms :ruby do
   gem "sqlite3-ruby"
-  if RUBY_VERSION < '1.9'
-    gem "ruby-debug", ">= 0.10.3"
-  end
+  gem "ruby-debug", ">= 0.10.3" if RUBY_VERSION < '1.9'
+
   group :mongoid do
     gem "mongo", "1.0.7"
     gem "mongoid", "2.0.0.beta.18"

Gemfile.lock

@@ -126,7 +126,7 @@ GEM
     ruby-openid (2.1.8)
     ruby-openid-apps-discovery (1.2.0)
       ruby-openid (>= 2.1.7)
-    sqlite3-ruby (1.3.2)
+    sqlite3-ruby (1.3.1)
     thor (0.14.4)
     treetop (1.4.8)
       polyglot (>= 0.3.1)
@@ -155,7 +155,7 @@ DEPENDENCIES
   oa-oauth
   oa-openid
   orm_adapter (~> 0.0.2)
-  rails (= 3.0.0)
+  rails
   ruby-debug (>= 0.10.3)
   sqlite3-ruby
   warden (~> 1.0.0)

lib/devise/omniauth/config.rb

@@ -15,11 +15,11 @@ module Devise
       end
 
       def check_if_allow_stubs!
-        raise "#{@provider} OmniAuth strategy does not allow stubs, only OAuth2 ones." unless allow_stubs?
+        raise "OmniAuth strategy for #{@provider} does not allow stubs, only OAuth2 ones do." unless allow_stubs?
       end
 
       def allow_stubs?
-        !(defined?(OmniAuth::Strategies::OAuth2) && strategy.is_a?(OmniAuth::Strategies::OAuth2))
+        defined?(::OmniAuth::Strategies::OAuth2) && strategy.is_a?(::OmniAuth::Strategies::OAuth2)
       end
 
       def build_connection(&block)