diff --git a/activerecord/lib/active_record/fixtures.rb b/activerecord/lib/active_record/fixtures.rb
index 51202b3f92..af222e38e4 100755
--- a/activerecord/lib/active_record/fixtures.rb
+++ b/activerecord/lib/active_record/fixtures.rb
@@ -505,7 +505,7 @@ module Test #:nodoc:
       end
 
       def setup_with_fixtures
-        return unless defined?(ActiveRecord::Base)
+        return unless defined?(ActiveRecord::Base) && !ActiveRecord::Base.configurations.blank?
 
         if pre_loaded_fixtures && !use_transactional_fixtures
           raise RuntimeError, 'pre_loaded_fixtures requires use_transactional_fixtures' 
@@ -537,7 +537,7 @@ module Test #:nodoc:
       alias_method :setup, :setup_with_fixtures
 
       def teardown_with_fixtures
-        return unless defined?(ActiveRecord::Base)
+        return unless defined?(ActiveRecord::Base) && !ActiveRecord::Base.configurations.blank?
 
         # Rollback changes.
         if use_transactional_fixtures?