diff --git a/actionpack/test/controller/integration_upload_test.rb b/actionpack/test/controller/integration_upload_test.rb
index d579980..63b2301 100644
--- a/actionpack/test/controller/integration_upload_test.rb
+++ b/actionpack/test/controller/integration_upload_test.rb
@@ -23,6 +23,13 @@ class SessionUploadTest < ActionController::IntegrationTest
     attr_accessor :last_request_type
   end
 
+  AppWithMiddleware = lambda { |env|
+    req = Rack::Request.new(env)
+    req.params # Parse params
+    app = ActionController::Dispatcher.new
+    app.call(env)
+  }
+
   def test_upload_and_read_file
     with_test_routing do
       post '/read', :uploaded_data => fixture_file_upload(FILES_DIR + "/hello.txt", "text/plain")
@@ -30,6 +37,15 @@ class SessionUploadTest < ActionController::IntegrationTest
     end
   end
 
+  def test_pass_through_rack_middleware_that_uploads_and_reads_file
+    @integration_session = ActionController::Integration::Session.new(AppWithMiddleware)
+
+    with_test_routing do
+      post '/read', :uploaded_data => fixture_file_upload(FILES_DIR + "/hello.txt", "text/plain")
+      assert_equal "File: Hello", response.body
+    end
+  end
+
   # The lint wrapper is used in integration tests
   # instead of a normal StringIO class
   InputWrapper = Rack::Lint::InputWrapper
@@ -43,6 +59,16 @@ class SessionUploadTest < ActionController::IntegrationTest
     end
   end
 
+  def test_post_and_pass_through_rack_middleware_that_uploads_with_unrewindable_input
+    @integration_session = ActionController::Integration::Session.new(AppWithMiddleware)
+    InputWrapper.any_instance.expects(:rewind).raises(Errno::ESPIPE)
+
+    with_test_routing do
+      post '/read', :uploaded_data => fixture_file_upload(FILES_DIR + "/hello.txt", "text/plain")
+      assert_equal "File: Hello", response.body
+    end
+  end
+
   def test_post_with_upload_with_params_parsing
     with_test_routing do
       params = { :uploaded_data => fixture_file_upload(FILES_DIR + "/mona_lisa.jpg", "image/jpg") }