Ensure old revisions are retrieved from the DB in the correct order.

lib/wiki_to_gollum_migrator.rb

@@ -55,7 +55,7 @@ class WikiToGollumMigrator
   def create_page_and_revisions(project, page)
     # Grab all revisions of the page
-    revisions = project.wikis.where(slug: page.slug).ordered.all
+    revisions = project.wikis.where(slug: page.slug).order('id desc').all
     # Remove the first revision created from the array
     # and use it to create the Gollum page. Each successive revision

spec/lib/wiki_to_gollum_migrator_spec.rb

@@ -149,7 +149,7 @@ describe WikiToGollumMigrator do
         @page.user = @project.owner
         @page.save!
-        create_revision(@page)
+        3.times { create_revision(@page) }
         subject.migrate!
       end
@@ -158,6 +158,7 @@ describe WikiToGollumMigrator do
         wiki = GollumWiki.new(@project, nil)
         page = wiki.find_page("2012 06 16")
         page.should be_present
+        page.content.should == "Updated Content"
         page.versions.count.should == 2
       end
     end