Integration testing transactions and optimistic locking with Spring and JUnit

I did some badness today.

I wanted an integration test to check to see if my @Transactional method actually did rollback on an optimistic lock failure. It’s a pretty business critical method so I wanted to be sure that the whole @Transactional and @Version annotation voodoo actually works.

The approach I took was to inject, what I called a “slowRepository” into the object with the @Transactional method. The slowRepository is just a mockito mock of the object which “answers” (using “thenAnswer”) to the “findBy…” with some custom code.

The idea is that at some point during the @Transactional method the slowRepository is called and the “answer” code is invoked. In the test, the answer code follows along the lines of:

1. Grab the data it requires from the (not slow) repository (the repository the slowRepository is mocking)
2. Switch back the slowRepository for the not slow repository
3. Invoke the @Transactional method again on a separate thread
4. Sleep for a bit
5. Wake up and return the data from step 1

The @Transactional call on the separate thread completes and commits before slowRepository wakes up. When it does, slowRepository returns stale data and the @Transactional method then fails accordingly.

The problem I encountered was using the setters for my @Autowired dependencies on the bean with the @Transactional method. I needed to use the setters so that I could switch in and out the slowRepository, but couldn’t because Spring AOP proxies are implementations of an interface, not subclasses (by default – yes I realise you can get Spring to proxy the target class using CGLIB). I found this blog post which explains how to get at the target object behind a Spring proxy. I converted it to Scala:

…which is pretty ninja.

11,322 thoughts on “Integration testing transactions and optimistic locking with Spring and JUnit”

1win проблемы с выводом http://1win25340.help/

1win минимальная сумма депозита карта https://1win43592.help

Your style is so unique in comparison to other folks I’ve
read stuff from. Thanks for posting when you’ve got the opportunity, Guess I’ll just
book mark this web site.

free horse racing bet calculator

Here is my blog – greyhound derby Winners list

horse race betting app

Also visit my web-site :: https://horse-betting.Com/

Thanks a bunch for sharing this with all folks you really
realize what you’re speaking approximately! Bookmarked. Please also talk over with my web site =).

We may have a hyperlink exchange contract between us

today non runners horse racing

Visit my site – tips for betting on greyhounds (Elise)

new zealandn no deposit bonus pokies, legal online poker sites
australia and uk online gambling news, or northern lights grand falls casino
birthday (Hayden) uk

1win регистрация по номеру телефона Кыргызстан 1win регистрация по номеру телефона Кыргызстан

mostbet регистрация на сайте mostbet регистрация на сайте

Всем любителям кино нашёл удобную платформу наслаждаться кино — проект KinoStart. KinoStart — это платформа созданная с любовью к кино. Смотрите фильмы онлайн и наслаждайтесь каждой сценой. онлайн просмотр Мы собрали для вас избранные картины. Откройте для себя мир качественного кино. Вот ссылка: — http://kinostart-1.top киноновинки 2025 смотретькино kinostart онлайнфильмы онлайн Смотрите только лучшее

Di kota Semarang, toko karangan bunga papan kertas Semarang memberikan aneka jenis
hiasan bunga untuk ideal dimanfaatkan dalam berbagai acara.
Dari pernikahan dan ucapan selamat, outlet ini
memiliki bunga yang memenuhi harapan pengunjung.

Kazino haqqında faydalı kontent üçün təşəkkürlər!

1win platforma

Запишу сюда пару мыслей — казино Monro — 250 фриспинов за регистрацию без депозита — приятный старт. Депозит от 300 ? вывод от 500 ? — лимиты нормальные для рублёвого сценария. Раздел «Only at Monro» и jackpot — отдельно заглядываю когда хочется чего-то другого. Вывод до 24 часов на стороне казино дальше банк или платёжка. HTTPS и реквизиты оператора в подвале сверяю перед входом. Приложение на Android и iOS с главной страницы — поставил push на выплаты включил. В целом Monro для меня спокойный вариант без цирка.

1win адрес офиса 1win адрес офиса

1win о деньги Киргизия http://1win43592.help

Having read this I thought it was very enlightening.
I appreciate you finding the time and energy to put this content together.
I once again find myself spending a lot of time both reading and posting comments.

But so what, it was still worthwhile!

Save 30% on authentic NFL jerseys, NCAA football jerseys, and hockey jerseys
at Kyle’s Football Cards on eBay. Shop rare sports collectibles,
Nike Vapor Limited jerseys, and stitched team gear with fast, secure shipping.
Use code KYLEFAN30 for limited-time savings on premium sports memorabilia and fan apparel.