Blog posts

Automated testing
Stefan Lieser

CrowdStrike - What can we learn from it?

What happened? On Friday, 19.07.2024, there were numerous failures of Windows systems worldwide. The reason for this was an update from the company CrowdStrike. This update installed a file on the Windows computers involved that caused a CrowdStrike device driver to crash. As a result, the affected

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Automated testing
Björn Geisemeyer

Testing legacy code with approval tests

Exploring the code vastness of the legacy space - Where no test has gone before In the galaxies of software development, ensuring quality is of paramount importance and yet so often neglected. Working in untested and unknown code is as common as it is universally disliked. Who looks forward to

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Stryker Mutator for coverage analysis
Automated testing
Stefan Lieser

Mutation testing and continuous integration

In addition to principles, the Clean Code Developer Initiative also specifies various practices that a team should apply. These include integration tests (orange level) unit tests (yellow level) coverage analysis (yellow level) continuous integration (green level) These four practices together make a very important contribution to the value of correctness. The Integration and

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Integration tests with Docker
Automated testing
Stefan Lieser

Integration tests with Docker

Update 29.01.2024: I have adapted the sample code to .NET Core 8 and the latest NuGet packages. Furthermore, the code is now on GitLab instead of GitHub. Are integration tests useful? The question of whether integration tests are useful or even necessary comes up again and again in our training courses. Our clear answer

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Flow Design Seminars - Clean Code Academy - Stefan Lieser
Automated testing
Stefan Lieser

Unit Tests are your Friends

Inspired by the discussion with participants of a Clean Code Developer Workshop, I once again addressed the question of which strategies I use and recommend for automated testing.

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The tricky cases in testing - GUI -Clean Code Developer Academy - Seminars and Trainings
Automated testing
Stefan Lieser

The tricky cases in testing - GUI

Unit tests of the GUI? Automated testing of the GUI (graphical user interface) of a desktop application is a major challenge at first glance.

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