Merge pull request #590 from nanoc/auto-prune-by-default

Auto-prune by default

lib/nanoc/cli/commands/create-site.rb

@@ -48,8 +48,8 @@ def array_to_yaml(array)
 
 prune:
   # Whether to automatically remove files not managed by nanoc from the output
-  # directory. For safety reasons, this is turned off by default.
-  auto_prune: false
+  # directory.
+  auto_prune: true
 
   # Which files and directories you want to exclude from pruning. If you version
   # your output directory, you should probably exclude VCS directories such as

test/cli/commands/test_create_site.rb

@@ -95,4 +95,18 @@ def test_new_site_has_correct_stylesheets
       assert_match(/\/stylesheet.css/, File.read('output/index.html'))
     end
   end
+
+  def test_new_site_prunes_by_default
+    FileUtils.mkdir('foo')
+    FileUtils.touch(File.join('foo', 'SomeFile.txt'))
+    Nanoc::CLI.run %w( create_site foo --force )
+
+    FileUtils.cd('foo') do
+      File.write('output/blah.txt', 'stuff')
+
+      Nanoc::CLI.run %w( compile )
+
+      refute File.file?('output/blah.txt')
+    end
+  end
 end