Thursday
Room 5
10:20 - 11:20
(UTC+02)
Talk (60 min)
Are you writing valuable tests (2025 edition)?
As a developer, have you ever struggled with a unit test suite that felt more like a burden than a benefit — filled with flaky tests, requiring constant maintenance, and slowing down your workflow? If so, you may not be writing valuable tests.
In this session, you will learn how to develop test suites that are genuinely valuable. We will start by exploring the core principles behind valuable tests — tests that:
- Are easy to maintain.
- Provide protection against regressions.
- Are resilient to refactoring of production code.
- Deliver fast feedback.
While these principles apply broadly across languages and frameworks, we will use C#, xUnit, and other tools in the .NET ecosystem to show how to apply them in real-world scenarios. You will see practical examples, patterns, and recipes that I use daily to write and maintain effective tests.
By the end of this talk, you will have the knowledge to choose effective testing patterns for your projects, ensuring your test suite adds real value, and a finely tuned bad-test smell-detector.
Egil Hansen
Experienced software developer/architect, international speaker, and Microsoft MVP for developer technologies, with a strong focus on creating maintainable software that solves real business problems in the cloud and on-prem, using techniques and practices such as domain-driven design, test-driven development, and following clean-code principles.
Egil is also the creator and maintainer of bUnit, an open-source library for testing Blazor components, and AngleSharp.Diffing, a library for semantic comparison of HTML in C#.
Egil has worked with many technology stacks and architectural patterns throughout his career. He is now primarily focused on the .NET ecosystem, including backend and front-end technologies, and developing solutions running in the cloud.