Fix Rack::Response initialize

CHANGELOG.md

@@ -1,7 +1,7 @@
 Next Release
 ============
 
-* Your contribution here.
+* [#868](https://github.com/intridea/grape/pull/871): Fixed Rack::Response initialize - [@galathius](https://github.com/galathius)
 
 0.10.1 (12/28/2014)
 ===================

lib/grape/middleware/base.rb

@@ -37,7 +37,7 @@ def after
  end
 
  def response
- Rack::Response.new(@app_response)
+ Rack::Response.new(@app_response[2], @app_response[0], @app_response[1])
  end
 
  def content_type_for(format)

spec/grape/middleware/base_spec.rb

@@ -34,6 +34,27 @@
  expect(subject.response).to be_kind_of(Rack::Response)
  end
 
+ describe 'is created valid the response' do
+ subject { Grape::Middleware::Base.new(response) }
+ let(:response) { lambda { |_| [204, { abc: 1 }, 'test'] } }
+
+ it 'status' do
+ subject.call({})
+ expect(subject.response.status).to eq(204)
+ end
+
+ it 'body' do
+ subject.call({})
+ expect(subject.response.body).to eq(['test'])
+ end
+
+ it 'header' do
+ subject.call({})
+ puts subject.response.header
+ expect(subject.response.header).to have_key(:abc)
+ end
+ end
+
  context 'options' do
  it 'persists options passed at initialization' do
  expect(Grape::Middleware::Base.new(blank_app, abc: true).options[:abc]).to be true