Delegate xhr helper method to integration session

actionpack/lib/action_controller/integration.rb

@@ -451,7 +451,7 @@ EOF
       end
 
       %w(get post put head delete cookies assigns
-         xml_http_request get_via_redirect post_via_redirect).each do |method|
+         xml_http_request xhr get_via_redirect post_via_redirect).each do |method|
         define_method(method) do |*args|
           reset! unless @integration_session
           # reset the html_document variable, but only for new get/post calls

actionpack/test/controller/integration_test.rb

@@ -253,7 +253,10 @@ class IntegrationProcessTest < ActionController::IntegrationTest
     session :off
 
     def get
-      render :text => "OK", :status => 200
+      respond_to do |format|
+        format.html { render :text => "OK", :status => 200 }
+        format.js { render :text => "JS OK", :status => 200 }
+      end
     end
 
     def post
@@ -345,6 +348,20 @@ class IntegrationProcessTest < ActionController::IntegrationTest
     end
   end
 
+  def test_xml_http_request_get
+    with_test_route_set do
+      xhr :get, '/get'
+      assert_equal 200, status
+      assert_equal "OK", status_message
+      assert_equal "200 OK", response.headers["Status"]
+      assert_equal ["200 OK"], headers["status"]
+      assert_response 200
+      assert_response :success
+      assert_response :ok
+      assert_equal "JS OK", response.body
+    end
+  end
+
   private
     def with_test_route_set
       with_routing do |set|