Add cucumber feature for layouts inside subfolders

features/create_sites.feature

@@ -44,6 +44,17 @@ Feature: Create sites
     Then the _site directory should exist
     And I should see "Post Layout: <p>The only winning move is not to play.</p>" in "_site/2009/03/27/wargames.html"
 
+  Scenario: Basic site with layout inside a subfolder and a post
+    Given I have a _layouts directory
+    And I have a _posts directory
+    And I have the following posts:
+      | title    | date      | layout  | content                               |
+      | Wargames | 2009-03-27 | post/simple | The only winning move is not to play. |
+    And I have a post/simple layout that contains "Post Layout: {{ content }}"
+    When I run jekyll
+    Then the _site directory should exist
+    And I should see "Post Layout: <p>The only winning move is not to play.</p>" in "_site/2009/03/27/wargames.html"
+
   Scenario: Basic site with layouts, pages, posts and files
     Given I have a _layouts directory
     And I have a page layout that contains "Page {{ page.title }}: {{ content }}"

features/step_definitions/jekyll_steps.rb

@@ -38,7 +38,12 @@ Given /^I have an? (.*) (layout|theme) that contains "(.*)"$/ do |name, type, te
   else
     '_theme'
   end
-  File.open(File.join(folder, name + '.html'), 'w') do |f|
+  destination_file = File.join(folder, name + '.html')
+  destination_path = File.dirname(destination_file)
+  unless File.exist?(destination_path)
+    FileUtils.mkdir_p(destination_path)
+  end
+  File.open(destination_file, 'w') do |f|
     f.write(text)
   end
 end