Codebelt.Coverlet.MTP

Collect cross-platform .NET code coverage from Microsoft Testing Platform test projects. This Codebelt-maintained Coverlet fork ships one package, Codebelt.Coverlet.MTP, with .NET Standard 2.0, .NET 10 and .NET 11 assets.

Collect coverage

Add the package to an MTP-enabled test project, then enable coverage collection:

dotnet add package Codebelt.Coverlet.MTP
dotnet test --coverlet

Normal package usage relies on build-time discovery; no manual API registration is needed. The extension collects coverage and produces JSON and Cobertura reports by default. See the installation and configuration guide for runner setup, filters, thresholds and additional report formats.

API reference

Use the MTP integration reference when building a custom test runner. The configuration reference distinguishes complete registration from the exposed legacy handler, which cannot run coverage sessions. The diagnostics reference explains environment switches for investigating instrumentation failures.

The reference also includes the small public surface of the bundled coverlet.core.dll. Most instrumentation, coverage-model and reporter types are internal and are not part of this API reference. The engine is not a separately published Codebelt package.

Project and maintenance

The fork retains Coverlet's MTP assembly identity and focuses on the Codebelt package's framework support and maintenance. It is an extension for MTP, not a replacement test framework. For VSTest, console or MSBuild integrations, use the upstream Coverlet packages.

• Repository and usage
• NuGet package
• Coverage advisory for versions 10.0.1–10.1.1
• Upstream synchronization record
• Changelog

Build this documentation

With the repository SDK and the DocFX CLI installed, run docfx .docfx/docfx.json from the repository root. Generated metadata is written under .docfx/api; the site is written to .docfx/wwwroot. Documentation samples are compiled separately by the digest verifier and do not execute tests.

For the same container workflow used by the other Codebelt libraries, run pwsh .docfx/BuildDocfxImage.ps1 from the repository root. This generates API metadata, builds and loads coverlet-docfx:<MinVer version> for Linux ARM64 and AMD64, then removes generated metadata while preserving authored API pages. It requires the repository SDK, DocFX, MinVer, Docker Buildx with a multi-platform image store, and access to the shared codebeltnet/docfx:2 and dhi.io/nginx:1.31-alpine images.

When ready to publish an already-built image, run pwsh .docfx/PublishDocfxImage.ps1. It tags and pushes the same version to jcr.codebelt.net/geekle/coverlet-docfx; authenticate to that registry first. The scripts resolve paths from their own location and can also be run inside .docfx. Publishing the image is separate from deploying it or releasing the NuGet package.