Added STI model test.

test/models/book.rb

@@ -0,0 +1,2 @@
+class Book < ActiveRecord::Base
+end

test/models/novel.rb

@@ -0,0 +1,3 @@
+class Novel < Book
+  has_friendly_id :title, :use_slug => true
+end

test/schema.rb

@@ -1,4 +1,9 @@
 ActiveRecord::Schema.define(:version => 1) do
+
+  create_table "books", :force => true do |t|
+    t.column "title", "string"
+    t.column "type", "text"
+  end
 
   create_table "posts", :force => true do |t|
     t.column "title", "string"

test/sti_test.rb

@@ -0,0 +1,48 @@
+# encoding: utf-8
+
+require File.dirname(__FILE__) + '/test_helper'
+
+class SluggedModelTest < Test::Unit::TestCase
+
+  context "A slugged model using single table inheritance" do
+
+    setup do
+      Novel.friendly_id_options = FriendlyId::DEFAULT_FRIENDLY_ID_OPTIONS.merge(:column => :title, :use_slug => true)
+      Novel.delete_all
+      Slug.delete_all
+      @novel = Novel.new :title => "Test novel"
+      @novel.save!
+    end
+
+    should "have a slug" do
+      assert_not_nil @novel.slug
+    end
+
+    context "found by its friendly id" do
+
+      setup do
+        @novel = Novel.find(@novel.friendly_id)
+      end
+
+      should "not indicate that it has a better id" do
+        assert !@novel.has_better_id?
+      end
+
+    end
+
+
+    context "found by its numeric id" do
+
+      setup do
+        @novel = Novel.find(@novel.id)
+      end
+
+      should "indicate that it has a better id" do
+        assert @novel.has_better_id?
+      end
+
+    end
+
+  end
+
+end

test/test_helper.rb

@@ -16,6 +16,8 @@
 require 'models/person'
 require 'models/user'
 require 'models/country'
+require 'models/book'
+require 'models/novel'
 
 # Borrowed from ActiveSupport
 def silence_stream(stream)