platform-detection
GitHub提供.NET项目中测试平台(VSTest/MTP)和框架(MSTest/xUnit/NUnit/TUnit)的检测逻辑，通过解析项目文件确定配置。
Trigger Scenarios
Install
npx skills add dotnet/skills --skill platform-detection -g -y
SKILL.md
Frontmatter
{
"name": "platform-detection",
"license": "MIT",
"description": "Reference data for detecting the test platform (VSTest vs Microsoft.Testing.Platform) and test framework (MSTest, xUnit, NUnit, TUnit) from project files. DO NOT USE directly — loaded by run-tests, mtp-hot-reload, and migrate-vstest-to-mtp when they need detection logic.",
"user-invocable": false,
"disable-model-invocation": true
}
Test Platform and Framework Detection
Determine which test platform (VSTest or Microsoft.Testing.Platform) and which test framework (MSTest, xUnit, NUnit, TUnit) a project uses.
Detection files to always check (in order): global.json → .csproj → Directory.Build.props → Directory.Packages.props
Detecting the test framework
Read the .csproj file and Directory.Build.props / Directory.Packages.props (for centrally managed dependencies) and look for:
| Package or SDK reference | Framework |
|---|---|
MSTest (metapackage, recommended) or <Sdk Name="MSTest.Sdk"> |
MSTest |
MSTest.TestFramework + MSTest.TestAdapter |
MSTest (also valid for v3/v4) |
xunit, xunit.v3, xunit.v3.mtp-v1, xunit.v3.mtp-v2, xunit.v3.core.mtp-v1, xunit.v3.core.mtp-v2 |
xUnit |
NUnit + NUnit3TestAdapter |
NUnit |
TUnit |
TUnit (MTP only) |
Detecting the test platform
The detection logic depends on the .NET SDK version. Run dotnet --version to determine it.
.NET SDK 10+
On .NET 10+, the global.json test.runner setting is the authoritative source:
- If
global.jsoncontains"test": { "runner": "Microsoft.Testing.Platform" }→ MTP - If
global.jsonhas"runner": "VSTest", or notestsection exists → VSTest
Important: On .NET 10+,
<TestingPlatformDotnetTestSupport>alone does not switch to MTP. Theglobal.jsonrunner setting takes precedence. If the runner is VSTest (or unset), the project uses VSTest regardless ofTestingPlatformDotnetTestSupport.
.NET SDK 8 or 9
On older SDKs, check these signals in priority order:
1. Check the <TestingPlatformDotnetTestSupport> MSBuild property. Look in the .csproj, Directory.Build.props, and Directory.Packages.props. If set to true in any of these files, the project uses MTP.
Critical: Always read
Directory.Build.propsandDirectory.Packages.propsif they exist. MTP properties are frequently set there instead of in the.csproj, so checking only the project file will miss them.
2. Check project-level signals:
| Signal | Platform |
|---|---|
<Sdk Name="MSTest.Sdk"> as project SDK |
MTP by default |
<UseMicrosoftTestingPlatformRunner>true</UseMicrosoftTestingPlatformRunner> |
MTP runner (xUnit) |
<EnableMSTestRunner>true</EnableMSTestRunner> |
MTP runner (MSTest) |
<EnableNUnitRunner>true</EnableNUnitRunner> |
MTP runner (NUnit) |
Microsoft.Testing.Platform package referenced directly |
MTP |
TUnit package referenced |
MTP (TUnit is MTP-only) |
Note: The presence of
Microsoft.NET.Test.Sdkdoes not necessarily mean VSTest. Some frameworks (e.g., MSTest) pull it in transitively for compatibility, even when MTP is enabled. Do not use this package as a signal on its own — always check the MTP signals above first. Key distinction: VSTest is the classic platform that usesvstest.consoleunder the hood. Microsoft.Testing.Platform (MTP) is the newer, faster platform. Both can be invoked viadotnet test, but their filter syntax and CLI options differ.
Version History
- ce75c35 Current 2026-07-06 00:33
