Testing beyond your imagination: Property-based testing in C# with FsCheck

2026-09-15 Last updated: 2026-09-15

16 min read CSharp dotnet Tests

Property-based testing is a powerful alternative to example-based testing. Instead of defining specific inputs and verifying their outcomes, you define properties that should always hold true. Let’s learn how to use FsCheck to write property-based tests in C# with NUnit. Continue reading

No more regressions with Snapshot Tests in C# using Verify: a practical guide

2026-06-30 Last updated: 2026-07-01

15 min read CSharp dotnet Tests

Snapshot Tests are an uncommon type of test that focuses on checking that no regressions were introduced after a code refactoring. Let’s learn how they work and how to use the Verify NuGet library to add them to your test suite. Continue reading

Introducing the Testing Vial: a (better?) alternative to Testing Diamond and Testing Pyramid

2025-10-12 Last updated: 2026-03-04

9 min read CSharp Tests

The Testing Pyramid focuses on Unit Tests; the Testing Diamond focuses on Integration Tests; and what about the Testing Vial? Continue reading

C# Tip: injecting and testing the current time with TimeProvider and FakeTimeProvider

2025-09-02 Last updated: 2026-03-04

4 min read CSharp Tests

Dates used to be difficult to test. But with TimeProvider and FakeTimeProvider, everything becomes possible! Continue reading

How to use IHttpClientFactory and WireMock.NET together using Moq

2024-10-01 Last updated: 2026-03-24

7 min read CSharp Tests

WireMock.NET is a popular library used to simulate network communication through HTTP. But there is no simple way to integrate the generated in-memory server with an instance of IHttpClientFactory injected via constructor. Right? Wrong! Continue reading