C# · 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

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

microsoft/testfx

Fix MSBuild targets that generate files during the build but those files are missing from compilation or output.

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

ALWAYS USE when asked to migrate, replace, or make testable existing C static calls with a named wrapper or built-in abstraction: DateTime.UtcNow/Now or DateTimeOffset.UtcNow to TimeProvider/IClock…

microsoft/testfx

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

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

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

microsoft/testfx