Fix up tests

test/helper.rb

@@ -37,8 +37,7 @@ class Test::Unit::TestCase
   def site_configuration(overrides = {})
     full_overrides = build_configs(overrides, build_configs({"destination" => dest_dir}))
     build_configs({
-      "source"       => source_dir,
-      "full_rebuild" => true
+      "source" => source_dir
     }, full_overrides)
   end
 

test/test_regenerator.rb

@@ -5,15 +5,13 @@ class TestRegenerator < Test::Unit::TestCase
     setup do
       FileUtils.rm_rf(source_dir(".jekyll-metadata"))
 
-      @site = Site.new(Jekyll.configuration({
-        "source" => source_dir,
-        "destination" => dest_dir,
+      @site = fixture_site({
         "collections" => {
           "methods" => {
             "output" => true
           }
         }
-      }))
+      })
 
       @site.read
       @page = @site.pages.first