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Oleg Nenashev



Oleg is a community builder and DevRel consultant working on the Gradle Build Tool. He’s passionate about developer experience, open source software and open hardware. Oleg is a Jenkins maintainer, GSoC mentor and the creator of Testcontainers for C/C++. He is a CNCF/CDF ambassador. Oleg has a PhD degree in electronics design and volunteers in organizations helping Ukrainian military and refugees.


What were your first experiences with Testcontainers?

Replacing the in-house Docker container based integration test library in Jenkins

What’s your favourite Testcontainers module?

WireMock :P

What are your favourite features for Testcontainers?

Container suspension and on-demand builds

What’s the most memorable bug you managed to reproduce with a test using Testcontainers?

I was prototyping a Testcontainers plugin for Jenkins which would provide a wrapper for Jenkins pipelines provisioning containers. It kind of worked and would have been a cool addition to the ecosystem, but it was blowing up on Java 11 because legit class loading stacktraces were eating up all the memory when container initialization was failing. I solved it later but unfortunately I’ve never published the plugin itself.