testing – Sven Hübner IT

Advanced MSBuild: Auto-setup test projects

By sven.huebner.it December 24, 2022Build, General Development

You can minimize the effort of creating new test projects according to your project's conventions by defining some global default MSBuild properties. A new test project csproj will then be a five-liner consisting only of the SDK and TFM.

How to exclude test categories by default for ‘dotnet test’ CLI

By sven.huebner.it September 30, 2021Testing

Exclude test categories from "dotnet test" by default via a TestCaseFilter in your .runsettings file.

Record type gotcha with FluentAssertions 5

By sven.huebner.it July 22, 2021Testing

Use version 6+ of FluentAssertions when asserting equality of record types with collections in them.

Use Collection Initializers To Simplify Tedious Mapping and Validation Tests

By sven.huebner.it October 18, 2020Testing

With custom collection initializers, you can avoid writing repetitive test methods for mappers, converters and validators by using parameterized tests with type-safe yet generic test samples based on expressions and corresponding values.

Simplifying unit tests for WPF ViewModels

By sven.huebner.it October 13, 2020General Development

Use custom assertion extensions to easily unit-test implementations of INotifyPropertyChanged.

Improve your parameterized Tests with named ValueTuples

By sven.huebner.it October 13, 2020Testing

For parameterized tests, declare your samples as value tuple array and subsequently "Select" it to IEnumerable to be type-safe, concise and descriptive.

Performance Optimization Guided By Benchmarks

By sven.huebner.it August 22, 2020Performance

This post is just a summary of a few things I learned about performance optimization of CPU-bound / memory-bound processes in C#/.NET. I was able to accelerate two different low-level image processing algorithms by a factor of 10 while learning a lot and enjoying the process.