diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index c6c2a77..a391dd0 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -26,8 +26,10 @@ def page(options={})
 end
 
 def post(options={})
-  page = Jekyll::Post.new site, CONFIG_DEFAULTS["source"], "", "2015-01-01-post.md"
-  page.data = options
+  filename = File.expand_path("2015-01-01-post.md", CONFIG_DEFAULTS["source"])
+  config = { :site => site, :collection => site.collections["posts"] }
+  page = Jekyll::Document.new filename, config
+  page.merge_data!(options)
   page
 end