Fixed camel case issue #457

CHANGELOG.md

@@ -13,6 +13,7 @@
 * [#444](https://github.com/ruby-grape/grape-swagger//pull/444): Default value provided in the documentation hash, override the grape default [@scauglog](https://github.com/scauglog).
 * [#443](https://github.com/ruby-grape/grape-swagger/issues/443): Type provided in the documentation hash, override the grape type [@scauglog](https://github.com/scauglog).
 * [#454](https://github.com/ruby-grape/grape-swagger/pull/454): Include documented Hashes in documentation output - [@aschuster3](https://github.com/aschuster3).
+* [#457](https://github.com/ruby-grape/grape-swagger/issues/457): Using camel case on namespace throws exception on add_swagger_documentation method - [@rayko](https://github.com/rayko/).
 * Your contribution here.
 
 ### 0.21.0 (June 1, 2016)

lib/grape-swagger.rb

@@ -65,7 +65,6 @@ def combine_routes(app, doc_klass)
           next unless route_match
           resource = route_match.captures.first
           next if resource.empty?
-          resource.downcase!
           @target_class.combined_routes[resource] ||= []
           next if doc_klass.hide_documentation_path && route.path.match(/#{doc_klass.mount_path}($|\/|\(\.)/)
           @target_class.combined_routes[resource] << route

spec/swagger_v2/namespaced_api_spec.rb

@@ -21,6 +21,26 @@ def app
     end
   end
 
+  context 'with camel case namespace' do
+    def app
+      Class.new(Grape::API) do
+        namespace :camelCases do
+          get '/', desc: 'Look! An endpoint.'
+        end
+        add_swagger_documentation format: :json
+      end
+    end
+
+    subject do
+      get '/swagger_doc'
+      JSON.parse(last_response.body)['paths']['/camelCases']['get']
+    end
+
+    it 'shows the namespace description in the json spec' do
+      expect(subject['description']).to eql('Look! An endpoint.')
+    end
+  end
+
   context 'mounted' do
     def app
       namespaced_api = Class.new(Grape::API) do