gistfile1.diff

diff --git a/test/filter_test.rb b/test/filter_test.rb
index b4bbda1..bd1daeb 100644
--- a/test/filter_test.rb
+++ b/test/filter_test.rb
@@ -181,6 +181,16 @@ class AfterFilterTest < Test::Unit::TestCase
     assert_equal 'cool', body
   end
 
+  it "does modify the response body" do
+    mock_app {
+      get('/foo') { 'cool' }
+      after { response.body = 'uncool' }
+    }
+    get '/foo'
+    assert ok?
+    assert_equal 'uncool', body
+  end
+
   it "does modify the response with halt" do
     mock_app {
       get '/foo' do