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Tag: testing

18 posts · Page 1 of 2

2026-09-15 dotnet ai microsoft-extensions-ai

Microsoft.Extensions.AI 10.10 Fails Evaluation Metrics the Judge Never Scored

Microsoft.Extensions.AI.Evaluation.Quality 10.10.0 now marks unparseable and out-of-range quality scores as failed, and Microsoft.Extensions.AI.OpenAI 10.10.0 drops the Assistants adapter. Measured before and after on 10.9.0.

2026-09-08 dotnet testing rider

Rider 2026.3 EAP: dotCover Finally Measures TUnit Coverage

The Rider 2026.3 Early Access Program opened on September 7, 2026. Buried under rainbow brackets is the one line that changes a build: dotCover now reports coverage for TUnit tests, given Microsoft.Testing.Platform 2.3.0 and one package reference.

2026-09-04 mstest native-aot testing

MSTest 4.4 Graduates the Reflection Source Generator, and Native AOT Projects Get It Automatically

MSTest 4.4 moves MSTest.SourceGeneration out of experimental and aligns it with the MSTest version. Native AOT test projects pick it up with no opt-in, ReflectionFree mode can now skip runtime discovery for plain [TestMethod] and [DataRow], and five AOTSG diagnostics tell you which test shapes will not survive.

2026-09-02 migration vstest microsoft-testing-platform

Migrate from VSTest to Microsoft.Testing.Platform on the .NET 11 SDK

A step-by-step migration from VSTest to Microsoft.Testing.Platform 2.3.3: the OutputType Exe opt-in, the global.json runner switch, loggers becoming reporters, .runsettings becoming testconfig.json, and the exit codes that turn a green CI job red.

2026-09-01 migration xunit xunit-v3

Migrate a test project from xUnit v2 to xUnit v3 (2.9.3 to 4.0.0)

A step-by-step migration from xunit 2.9.3 to xunit.v3 4.0.0: package swaps, the OutputType Exe change, IAsyncLifetime returning ValueTask, the Xunit.Abstractions removal, and the CI filter syntax that silently stops matching.

2026-08-24 flutter dart testing

How to test a Flutter widget at a fixed point in time without a withClock closure

Inside testWidgets the ambient clock from package:clock is already fake, but it starts at whatever wall time the test began. Pin it for a whole suite by overriding runTest on a custom AutomatedTestWidgetsFlutterBinding installed from flutter_test_config.dart. Verified on Flutter 3.44.2, clock 1.1.2, fake_async 1.3.3.

2026-08-13 errors dotnet testing

Fix: Visual Studio Test Explorer hangs on an xUnit v3 project while dotnet test passes

Test Explorer drives xUnit v3 through Microsoft.Testing.Platform server mode over a JSON-RPC socket, dotnet test does not. Set UseMicrosoftTestingPlatformRunner so both paths are the same code, or set DisableTestingPlatformServerCapability to fall back to VSTest.

2026-08-07 dotnet testing ci-cd

Microsoft.Testing.Platform 2.3: --report-gh Puts Test Failures on the PR Diff

The .NET blog's August 6, 2026 post on MTP reporting surfaces a batch of extensions that went stable in Microsoft.Testing.Platform 2.3.0: GitHub Actions annotations, crash-resilient TRX streaming, and Azure DevOps flaky history.

2026-08-07 comparison dotnet aspnetcore

WebApplicationFactory vs Testcontainers for ASP.NET Core integration tests

They are not alternatives. WebApplicationFactory boots your app, Testcontainers boots your dependencies. Measured on .NET SDK 10.0.201: a container fixture costs 1.7 s per class against 10 ms for SQLite, and a HasMaxLength(16) violation that Postgres rejects with 22001 is silently accepted by SQLite.

2026-08-07 comparison testing xunit

xUnit v3 vs NUnit vs MSTest in 2026: which should you pick?

Pick xUnit v3 for greenfield .NET projects, NUnit 4.6 if you live in its constraint model, MSTest 4 if you already ship it. A measured comparison on .NET SDK 10.0.201 covering parallelism defaults, test class lifecycle, assertion failure output, and the Microsoft.Testing.Platform version conflict that breaks the NUnit runner.