Make sure Metal use ActionController class name conventions [#2242 state:resolved]

Signed-off-by: Joshua Peek <josh@joshpeek.com>

railties/lib/rails/rack/metal.rb

@@ -18,7 +18,7 @@ module Rails
         metal_glob.each do |glob|
           Dir[glob].sort.map do |file|
             file = file.match(matcher)[1]
-            all_metals[file.classify] = file
+            all_metals[file.camelize] = file
           end
         end
 

railties/test/fixtures/metal/pluralmetal/app/metal/legacy_routes.rb

@@ -0,0 +1,5 @@
+class LegacyRoutes < Rails::Rack::Metal
+  def self.call(env)
+    [301, { "Location" => "http://example.com"}, nil]
+  end
+end

railties/test/metal_test.rb

@@ -8,6 +8,12 @@ class MetalTest < Test::Unit::TestCase
     end
   end
 
+  def test_metals_should_respect_class_name_conventions
+    use_appdir("pluralmetal") do
+      assert_equal(["LegacyRoutes"], found_metals_as_string_array)
+    end
+  end
+
   def test_metals_should_return_alphabetical_list_of_found_metal_apps
     use_appdir("multiplemetals") do
       assert_equal(["MetalA", "MetalB"], found_metals_as_string_array)