Microsoft.Testing.Extensions.TrxReport

Microsoft.Testing.Extensions.TrxReport is an extension for Microsoft.Testing.Platform that generates TRX (Visual Studio Test Results) report files.

Microsoft.Testing.Platform is open source. You can find Microsoft.Testing.Extensions.TrxReport code in the microsoft/testfx GitHub repository.

Install the package

dotnet add package Microsoft.Testing.Extensions.TrxReport

About

This package extends Microsoft.Testing.Platform with:

• TRX report generation: produces .trx report files compatible with Visual Studio and Azure DevOps
• Standardized format: TRX is a widely supported XML-based test results format
• CI integration: TRX files can be published to Azure DevOps, GitHub Actions and other CI systems for rich test result visualization

Usage

Enable TRX report generation via the --report-trx command line option.

On platforms that can launch a test-host process (all except Android, browser, iOS, tvOS, and WASI), TRX uses controller-backed recovery by default: the test host still streams results and generates the report during normal execution, but a surviving controller process can recover completed results into a TRX report if the test host crashes, hangs, or is stopped by --timeout. Android, browser, iOS, tvOS, and WASI cannot launch a test-host process, so TRX automatically falls back to its original in-process implementation there — no controller-backed recovery is attempted, and no configuration is required to get this fallback.

The extra process has a measurable startup cost, which varies by target framework: for a trivial single-test run, launching the controller added no statistically measurable overhead on .NET (differences were within normal process-launch noise) but added roughly 700-800ms on .NET Framework in local measurements. Weigh this against the reliability benefit for your scenario, especially on .NET Framework or in tight inner-loop test runs.

Related packages

• Microsoft.Testing.Extensions.TrxReport.Abstractions: interfaces for extensions interoperating with TRX reports
• Microsoft.Testing.Extensions.AzureDevOpsReport: Azure DevOps CI error/warning reporting for test failures

Documentation

For this extension, see https://learn.microsoft.com/dotnet/core/testing/microsoft-testing-platform-extensions-test-reports#visual-studio-test-reports-trx.

For comprehensive documentation, see https://aka.ms/testingplatform.

Feedback & contributing

Microsoft.Testing.Platform is an open source project. Provide feedback or report issues in the microsoft/testfx GitHub repository.