.NET · microsoft/testfx

MANDATORY for static source-to-test pairing: find or list source files/modules without corresponding tests, or suggest test locations from repository structure.

microsoft/testfx

Activation requires either supplied .NET coverage reports/percentages/line, branch, or condition metrics, or an explicit request to collect .NET coverage for analysis.

microsoft/testfx

Safely refactors C/.NET code without changing behavior. An agent skill from microsoft/testfx.

microsoft/testfx

Identify a .NET project's test platform, framework, command mode, and SDK-style vs classic project system.

microsoft/testfx

ALWAYS USE when asked to fix, rewrite, update, improve, modernize, show corrected code for, or explain existing MSTest tests or MSTest-specific configuration.

microsoft/testfx

Guide for organizing MSBuild infrastructure with Directory.Build.props, Directory.Build.targets, Directory.Packages.props, and Directory.Build.rsp.

microsoft/testfx

Guide for modernizing and migrating MSBuild project files to SDK-style format.

microsoft/testfx

Generate MSBuild binary logs (binlogs) for build diagnostics and analysis.

microsoft/testfx

Diagnose MSBuild build performance bottlenecks using binary log analysis.

microsoft/testfx

Calculates CRAP (Change Risk Anti-Patterns) for a named .NET method, class, or file.

microsoft/testfx

ACTIVATION PREREQUISITE: the request or discovered target must explicitly identify C, .NET, .cs, or .csproj; otherwise stay dormant without invoking this skill.

microsoft/testfx

DO NOT USE when the target already consumes an injected interface or built-in abstraction such as IFileSystem or TimeProvider, even if the request says "generate a wrapper"; no new wrapper is needed.

microsoft/testfx

Set up or recover MTP hot reload for a long-lived console-host edit/re-run loop in a Microsoft Testing Platform project.

microsoft/testfx

ALWAYS USE before running .NET tests or answering with a test command or flags.

microsoft/testfx

Route C and .NET requests to the exact installed specialist or smallest dotnet/skills marketplace plugin.

microsoft/testfx

MUST USE when an existing .NET test project was excluded from a .slnf/CI solution filter, disappeared from .sln/.slnx discovery, or lost its production ProjectReference; also for requests to set up…

microsoft/testfx

Install a .NET SDK locally for safe preview testing, specific-version pinning, or reproducible team setups — without modifying the system-wide installation.

microsoft/testfx

MUST USE for C/.NET deterministic tests that require the smallest production seam for DateTime/Task.Delay/File/Environment/Guid/Random, static API preservation, nested/parallel overrides, or no real…

microsoft/testfx

Pseudo-mutation analysis ONLY: answer whether tests would catch a bug if production code changed, which meaningful changes would still pass, or which caller-visible mutations existing assertions…

microsoft/testfx

Audits existing tests in any language using formal, research-backed test smell names and the testsmells.org 19-smell academic taxonomy.

microsoft/testfx

Classifies existing tests by standard traits and reports their distribution.

microsoft/testfx

Grade a curated list of individual tests for readiness, A-F quality, and concrete improvements.

microsoft/testfx

Use only for MSBuild failure investigation, build-performance analysis, or review of existing build XML/extension contracts.

microsoft/testfx

Audit a test file or suite; produce a severity-ranked diagnostic report.

microsoft/testfx

Provides file paths to language-specific reference files for the test ANALYSIS skills (assertion-quality, test-anti-patterns, test-gap-analysis, test-smell-detection, test-tagging).

microsoft/testfx

Guide for using MSBuild Server to improve CLI build performance.

microsoft/testfx

Validate generated TestFx localization catalogs, resource IDs, placeholders and locked tokens.

microsoft/testfx

Provides file paths to language-specific extension files for the code-testing pipeline.

microsoft/testfx