Add test for nested post_url

test/source/_posts/es/2008-11-21-nested.textile

@@ -0,0 +1,8 @@
+---
+layout: default
+title: Nested
+---
+
+url: {{ page.url }}
+date: {{ page.date }}
+id: {{ page.id }}

test/test_generated_site.rb

@@ -14,7 +14,7 @@ class TestGeneratedSite < Test::Unit::TestCase
     end
 
     should "ensure post count is as expected" do
-      assert_equal 32, @site.posts.size
+      assert_equal 33, @site.posts.size
     end
 
     should "insert site.posts into the index" do

test/test_tags.rb

@@ -204,6 +204,27 @@ CONTENT
     end
   end
 
+  context "simple page with nested post linking" do
+    setup do
+      content = <<CONTENT
+---
+title: Post linking
+---
+
+{% post_url es/2008-11-21-nested %}
+CONTENT
+      create_post(content, {'permalink' => 'pretty', 'source' => source_dir, 'destination' => dest_dir, 'read_posts' => true})
+    end
+
+    should "not cause an error" do
+      assert_no_match /markdown\-html\-error/, @result
+    end
+
+    should "have the url to the \"complex\" post from 2008-11-21" do
+      assert_match %r{/2008/11/21/nested/}, @result
+    end
+  end
+
   context "gist tag" do
     context "simple" do
       setup do