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Scan C# source files for hard-to-test static dependencies — DateTime.Now/UtcNow, File.*, Directory.*, Environment.*, HttpClient, Console.*, Process.*, and other untestable statics. Produces a ranked report of static call sites by frequency. USE FOR: find untestable statics, scan for static dependencies, testability audit, identify hard-to-mock code, find DateTime.Now usage, detect static coupling, testability report, static analysis for testability. DO NOT USE FOR: generating wrappers (use gener
Passed 14 of 21 test cases with the skill, and 11 of 21 without it.
and 4 more in the full report
5 fixed10 passed either way6 still failing1 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 4 test cases the skill fixed. Same model, same prompt, with and without the skill.
In `src/Utilities/DataFilter.cs`, static calls like `DateTime.UtcNow` appear inside LINQ expressions such as `items.Where(x => x.Created > DateTime.UtcNow)`. Should static calls inside lambdas be counted?
| Checked | Without skill | With skill |
|---|---|---|
| Includes static call sites inside lambda expressions and LINQ clauses in total counts. | Missed | Passed |
The instructions your model reads when the skill loads.
Scan a C# codebase for calls to hard-to-test static APIs and produce a ranked report showing which statics appear most frequently, which files are most affected, and which abstractions already exist in the .NET ecosystem to replace them.
generate-testability-wrappers)migrate-static-to-wrapper)TimeProvider| Input | Required | Description |
|---|---|---|
| Target path | Yes | A file, directory, project (.csproj), or solution (.sln) to scan |
| Exclusion patterns | No | Glob patterns to skip (e.g., **/obj/**, **/Migrations/**) |
| Category filter | No | Limit to specific categories: time, filesystem, environment, network, console, process |
Resolve the target to a set of .cs files:
.cs file, scan that single file..cs files recursively (excluding obj/, bin/)..csproj, find its directory and scan .cs files within.test cases passed, vs 11 / 21 without
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