Sunday, 24 July 2016

Testing Apache Camel routes

Running Apache Camel on top of Spring is quite popular nowadays and there is a multitude of resources on how to create the routes. However, sooner or later you will want to test the routes and this is where people usually hit a brick wall, because the documentation is a bit confusing. If you're still trying to find a good way to test your routes, then read on.

A simple route

We are using 3 queues: seda:groceries, seda:fruits and seda:vegetables. In case you're wondering what SEDA is, it's just an in-memory queue provided by Camel and it can be replaced by anything else like JMS or RabbitMQ, the principle stays the same.
The type of objects pushed into the groceries queue is checked via Camel's choice() construct and the fruits are redirected into the fruits queue, while the vegetables are redirected into the vegetables queue. The fruits queue is processed by FruitProcessor and the vegetable queue is processed by VegetableProcessor.

The test setup

In order to test the routes, we need to start Camel, which is not possible using the production configuration, considering the fact that Camel will connect to various third party services. Also, we need to make sure that we don't run the real processors, because we only want to test the routes.

This is the test setup, which is actually the complicated part of all this:

A few essential points for the test setup:
  1. We are using CamelSpringJUnit4ClassRunner to run the tests
  2. The test has its own configuration, defined in the ContextConfig inner class, which extends SingleRouteCamelConfiguration
  3. The route() method in ContextConfig() defines the route builder class that we are testing
  4. All the processors are defined as beans and they are mocked by using Camel's MockEndpoint. That allows us to replace the actual processors with mocks and make assertions on how the messages are travelling through the routes.
  5. The mock processors are autowired into the test class so that assertions can be made against them

The tests

After the setup is complete, the actual tests are quite straightforward:
  1. When I push a Fruit object into the groceries queue, I would like the FruitProcessor to process the message
  2. When I push a Vegetable object into the groceries queue, I would like the VegetableProcessor to process the message
This is the actual code:
There are many ways to go about testing the routes, but the setup and test strategy remain the same. I hope you found this useful, if you did then please share. The maven project is available here.

Share on Twitter | Share on Facebook | Share on Google+


  1. I regard something truly interesting about your web blog so I saved to favorites .
    Packers And Movers in Bangalore

  2. It has always been my belief that very good writing such as this takes researching and also talent. It’s very apparent you have performed your homework.Good job!Also visit my web blog …
    Packers And Movers Bangalore

  3. I must be thankful for sharing your ideas.Thank you for the good writeup.its a brellint job.please visit here for more detail:
    Packers and Movers Delhi


  4. Manish Packers and Movers Pvt Ltd as a Services providing company can make all the difference to your Home Relocation experience. Indore based Company which offers versatile solutions, Right team that easily reduce the stress associated with a Household Shifting, Vehicle Transportation. we help things run smoothly and reduce breakages and offer you seamless, Affordable, Reliable Shifting Services, Compare Shifting Charges, Visit :

  5. Hire Manish Packers and Movers Pvt Ltd in India for hassle-free Household Shifting, Office Relocation, Car Transporation, Loading Unloading, packing Unpacking at affordable Price Quotation. Top Rated Safe and Secure Service Providers who can help you with 24x7 and make sure a Untroubled Relocation Services at Cheapest/Lowest Rate. Visit More :-
    Manish Packers and Movers Pvt Ltd
    Packers and Movers Bangalore
    Packers and Movers Gurgaon
    Packers and Movers Indore
    Packers and Movers Kolkata
    Packers and Movers Mumbai
    Packers and Movers Nagpur
    Packers and Movers Ahmedabad
    Manish Packers in Indore
    Manish Packers and Movers Pvt Ltd Sitemap


  6. اننا في شركة الرائد للخدمات المنزلية نقدم خدمات ممتازة في الدمام بافضل الاسعار بجودة عالية لمزيد من الخدمات تفضل بزيارة

    شركة مكافحة حشرات بالدمام شركة مكافحة حشرات بالدمام
    شركة تنظيف سجاد بالدمام شركة تنظيف سجاد بالدمام
    شركة تسليك مجاري بالدمام شركة تسليك مجاري بالدمام
    افضل شركة تنظيف بالدمام افضل شركة تنظيف بالدمام
    شركة مكافحة الفئران بالدمام شركة مكافحة الفئران بالدمام
    ارخص شركة نقل عفش بالدمام ارخص شركة نقل عفش بالدمام

  7. Packers and Movers Chennai Give Safe and Reliable ***Household Shifting Services in Chennai with Reasonable ###Packers and Movers Price Quotation. We Provide Household Shifting, Office Relocation, ✔✔✔Local and Domestic Transportation Services, Affordable and Reliable Shifting Service Charges @
    Packers And Movers Chennai

  8. Background Removal Services (BRS) is one of the best Clipping path service provider around the world. We offer our global customers: Raster to Vector Services, Photo Restoration Services Prices, Photo Neck Joint Service, Exposure Color Correction Service, Jewelry Photo, Retouching Services, Photo Color Correction Service, Image Mirror Effect Service, Cheap Retouching Services, Deep Etching Service,