* Added query to ask a class or instance if it is paranoid

* Added test setup

Rakefile

 require 'bundler'
 Bundler::GemHelper.install_tasks
+
+task :test do
+  Dir['test/*_test.rb'].each do |testfile|
+      load testfile
+  end
+end
\ No newline at end of file

lib/paranoia.rb

 module Paranoia
+  def self.included(klazz)
+    klazz.extend Query
+  end
+
+  module Query
+    def paranoid? ; true ; end
+  end
+
   def destroy
     _run_destroy_callbacks
     self[:deleted_at] ||= Time.now
@@ -17,4 +25,7 @@ class ActiveRecord::Base
     self.send(:include, Paranoia)
     default_scope :conditions => { :deleted_at => nil }
   end
+
+  def self.paranoid? ; false ; end
+  def paranoid? ; self.class.paranoid? ; end
 end

test/paranoia_test.rb

+require 'test/unit'
+require 'active_record'
+require 'lib/paranoia'
+
+DB_FILE = 'tmp/test_db'
+
+FileUtils.mkdir_p File.dirname(DB_FILE)
+FileUtils.rm_f DB_FILE
+
+ActiveRecord::Base.establish_connection :adapter => 'sqlite3', :database => DB_FILE
+ActiveRecord::Base.connection.execute 'CREATE TABLE paranoid_models (id INTEGER NOT NULL PRIMARY KEY)'
+ActiveRecord::Base.connection.execute 'CREATE TABLE plain_models (id INTEGER NOT NULL PRIMARY KEY)'
+
+class ParanoiaTest < Test::Unit::TestCase
+  def test_plain_model_class_is_not_paranoid
+    assert_equal false, PlainModel.paranoid?
+  end
+
+  def test_paranoid_model_class_is_paranoid
+    assert_equal true, ParanoidModel.paranoid?
+  end
+
+  def test_plain_models_are_not_paranoid
+    assert_equal false, PlainModel.new.paranoid?
+  end
+
+  def test_paranoid_models_are_paranoid
+    assert_equal true, ParanoidModel.new.paranoid?
+  end
+
+end
+
+# Helper classes
+
+class ParanoidModel < ActiveRecord::Base
+  acts_as_paranoid
+end
+
+class PlainModel < ActiveRecord::Base
+end