UWP and WinUI 3 apps: UI testing with MSTest
.NET Blog published “UWP and WinUI 3 apps: UI testing with MSTest” by Amaury Levé on 2026-10-05. Here is what it covers and why it matters for Runtime & Platform developers.
What was announced From the source
.NET Blog published “UWP and WinUI 3 apps: UI testing with MSTest” by Amaury Levé on 2026-10-05.
The publisher summarises it as: “Learn how to test UWP and WinUI 3 apps with MSTest and Microsoft.Testing.Platform across packaged, unpackaged, and AppContainer hosts.”
The post is organised into these sections:
- Choose the model for UWP and WinUI 3 apps
- Select MSTest.Sdk and MTP for UWP and WinUI 3 apps
- Configure UWP and WinUI 3 apps
- Modern UWP
- Classic UWP
- AppContainer-configured WinUI 3
- Build the self-hosted WinUI 3 test app
- Configure the shared project
- Define the application entry point
- Host the test run from OnLaunched
At a glance · .NET
What was announcedWhy it mattersWho should careWhat to do next
Why it matters Analysis
Changes to the .NET runtime, libraries and application frameworks shape performance, compatibility and the features available to every .NET application. Following them helps teams plan upgrades and adopt improvements deliberately.
Who should care Analysis
- .NET application developers
- Library and framework authors
- Teams planning .NET version upgrades
What to do next Analysis
- Read the full post on .NET Blog for details, code samples and documentation links.
- Try new features or previews in a test project first.
- Check the .NET breaking-changes documentation before upgrading major versions.
Sources and further reading
- Original post on .NET Blog (original source)
Original: “UWP and WinUI 3 apps: UI testing with MSTest”, .NET Blog, published 5 Oct 2026, retrieved 16 Oct 2026. This article was generated from the official source using our structured templates and passed automated quality checks. Spotted a mistake? See our corrections policy.