Copenhagen .Net User Group

Presentation
!!The presentation will be in English and will NOT be available online.!!

For the first event of 2026 CNUG has the pleasure of bringing two presenters each focusing on a 2026 hot topic within the .Net development world.

Doors open at 16:30 and the first talk starts at 17:00.

"Test Containers" by Morten Christensen
Testcontainers is an open source library for providing throwaway, lightweight instances of databases, message brokers, web browsers, or just about anything that can run in a Docker container.
During this session we'll dive into some practical examples of writing/running outside-in tests (end to end tests) using XUnit and Testcontainers for the database and message broker needs.
We'll cover the test fixture setup, debugging experience and running the same tests in a Yaml Pipeline in Azure DevOps.

"Aspire end to end flows" by Toni Petrina
.NET Aspire has changed the way we tie together .NET services. It's an opinionated approach towards building an application stack including both our services and external dependencies.

After writing and tying our services, the focus shifts to testing and deployment. In this session we will take a look at how to effectively test distributed applications built with Aspire. We will also take a look at how to deploy such applications onto our infrastructure with the special focus on day 2 operations.

Places are limited, so if you sign up, be sure to show up!!

• 17.00 - 17.10 Arrival and Welcome by CNUG (10 min)
• 17.10 -17.20 Introduction by Visma e-conomic (Host)
• 17.20 - 18.10 Test Containers (Morten) (50 min)
• 18.10 - 18.40 Networking break (30 min)
• 18.40 - 19.30 Aspire (Toni Petrina) (50 min)
• 19.30 - 20.00 Announcements and Goodbye (30 min)