Make tests run on 1.8.x, add integration setup.

actionpack/lib/action_dispatch/middleware/request_id.rb

@@ -18,7 +18,6 @@ module ActionDispatch
 
     def call(env)
       env["action_dispatch.request_id"] = external_request_id(env) || internal_request_id
-
       status, headers, body = @app.call(env)
 
       headers["X-Request-Id"] = env["action_dispatch.request_id"]

actionpack/test/dispatch/request_id_test.rb

@@ -18,42 +18,48 @@ class RequestIdTest < ActiveSupport::TestCase
   end
 
   private
-    def stub_request(env = {})
-      ActionDispatch::RequestId.new(->(env) { [ 200, env, [] ] }).call(env)
-      ActionDispatch::Request.new(env)
-    end
+
+  def stub_request(env = {})
+    ActionDispatch::RequestId.new(lambda { |env| [ 200, env, [] ] }).call(env)
+    ActionDispatch::Request.new(env)
+  end
 end
 
-# FIXME: Testing end-to-end doesn't seem to work
-# 
-# class RequestIdResponseTest < ActionDispatch::IntegrationTest
-#   class TestController < ActionController::Base
-#     def index
-#       head :ok
-#     end
-#   end
-# 
-#   test "request id is passed all the way to the response" do
-#     with_test_route_set do
-#       get '/'
-#       puts @response.headers.inspect
-#       assert_equal "internal-uu-rid", @response.headers["X-Request-Id"]
-#     end
-#   end  
-# 
-# 
-#   private
-#     def with_test_route_set
-#       with_routing do |set|
-#         set.draw do
-#           match ':action', to: ::RequestIdResponseTest::TestController
-#         end
-# 
-#         @app = self.class.build_app(set) do |middleware|
-#           middleware.use ActionDispatch::RequestId
-#         end
-# 
-#         yield
-#       end
-#     end
-# end
+class RequestIdResponseTest < ActionDispatch::IntegrationTest
+  class TestController < ActionController::Base
+    def index
+      head :ok
+    end
+  end
+
+  test "request id is passed all the way to the response" do
+    with_test_route_set do
+      get '/'
+      assert_match(/\w+/, @response.headers["X-Request-Id"])
+    end
+  end
+
+  test "request id given on request is passed all the way to the response" do
+    with_test_route_set do
+      get '/', {}, 'HTTP_X_REQUEST_ID' => 'X' * 500
+      assert_equal "X" * 255, @response.headers["X-Request-Id"]
+    end
+  end
+
+
+  private
+
+  def with_test_route_set
+    with_routing do |set|
+      set.draw do
+        match '/', :to => ::RequestIdResponseTest::TestController.action(:index)
+      end
+
+      @app = self.class.build_app(set) do |middleware|
+        middleware.use ActionDispatch::RequestId
+      end
+
+      yield
+    end
+  end
+end