Testing & QA Agent Skills

Analyzes test suites to measure assertion diversity, detect shallow or trivial assertions, and identify tests that lack meaningful verification.

Analyzes .NET project code coverage and CRAP (Change Risk Anti-Patterns) scores to identify risk hotspots, methods blocking coverage gains, and prioritize where to add tests.

Analyzes production code to find gaps in existing tests by reasoning about hypothetical mutations and checking whether tests would catch them.

Generates and writes unit tests for any programming language using a multi-agent pipeline that researches, plans, and implements tests with build and verification steps.

Detects the test platform (VSTest vs Microsoft.Testing.Platform) and test framework (MSTest, xUnit, NUnit, TUnit) from .NET project files.

Audits test files for anti-patterns and quality issues, producing a severity-ranked report across multiple languages and frameworks.

Audits test code in any language using the academic testsmells.org 19-smell catalog, producing a severity-ranked report with specific locations and actionable fixes.

Write, create, modernize, or fix comprehensive MSTest unit tests with MSTest 3.x/4.x APIs, covering assertions, data-driven tests, lifecycle, and async patterns.

Parse source files to find which ones have no test file referencing their declared types, producing a prioritized worklist of untested files.

Provides file paths to language-specific extension files for the code-testing pipeline, enabling discovery of guidance for .NET, Python, TypeScript, and other languages.

Provides file paths to language-specific reference files for polyglot test analysis skills, enabling framework-aware detection of test markers, assertions, and patterns across .NET, Python, TypeScript, Java, Go, Ruby, Rust, Swift, Kotlin, PowerShell, and C++.

Generate wrapper interfaces, default implementations, and DI registration code to make hard-to-test static dependencies in C# testable, using built-in abstractions like TimeProvider or custom wrappers.

Validates custom dotnet new templates for correctness before publishing, catching missing fields, parameter bugs, shortName conflicts, constraint issues, and common authoring mistakes.

Audits .NET test mock usage by tracing each mock setup through the production code's execution path to find dead, unreachable, redundant, or replaceable mocks.

Migrates .NET test projects from VSTest to Microsoft.Testing.Platform (MTP), updating project files, CLI arguments, and CI/CD pipelines for MSTest, NUnit, and xUnit.net.

Analyzes .NET test suites for duplicated boilerplate, copy-paste tests, and structural maintainability issues, producing a report with concrete before/after refactoring suggestions.

Fix build errors and breaking changes when upgrading MSTest from v3 to v4, or plan a complete migration.

Migrate .NET test projects from xUnit.net (v2 or v3) to MSTest v4, converting attributes, assertions, fixtures, and project configuration.

Migrate test projects from MSTest v1 (assembly references) or v2 (NuGet 1.x-2.x) to MSTest v3, handling breaking changes like assertion overloads, DataRow constructors, .testsettings replacement, and target framework updates.

Migrates .NET test projects from xUnit.net v2 to xUnit.net v3, updating package references, project files, and code to compile and pass tests.

Evaluates Expo skills end-to-end: trigger accuracy, generated code quality, and runtime screenshots on iOS simulator and Android emulator via Expo Go.

Generate and run Jest tests for Adobe App Builder actions and React Spectrum UI components, including unit, integration, contract, and component tests with mock helpers for Adobe SDKs.

Guide for testing code changes in AEM Edge Delivery projects including blocks, scripts, and styles. Use this skill after making code changes and before opening a pull request to validate functionality. Covers unit testing, browser testing with Playwright, and linting.

Generates Angular code and provides architectural guidance for projects, components, services, reactivity, forms, dependency injection, routing, SSR, accessibility, animations, styling, testing, and CLI tooling.

Write effective unit tests with JUnit 5, covering standard and data-driven testing approaches.

Write effective unit tests with TUnit, covering standard tests, data-driven tests, and migration from xUnit.

Write effective unit tests with XUnit, covering standard and data-driven testing approaches.

Write effective unit tests with modern MSTest 3.x/4.x, covering assertion APIs, data-driven tests, and test lifecycle best practices.

Build automated evaluation pipelines for Python LLM applications using real LLM calls and structured test datasets.

Run pytest tests with coverage, discover lines missing coverage, and increase coverage to 100%.

Upgrades PowerShell Pester test suites across major versions (v3→v4, v4→v5, v5→v6) with structured workflows, reference guides, and safety rules.

Runs a complete quality engineering audit on any codebase, deriving behavioral requirements, generating spec-traced tests, performing multi-pass code review, and producing a consolidated bug report with verified patches.

Enforce code quality with Ruff in a controlled, iterative workflow: run checks with optional scope and rule overrides, apply safe and unsafe autofixes, review diffs, and resolve remaining findings.

Provides expert guidance for testing Spring Boot 4 applications with modern patterns, test slices, and best practices.

Write and review unit tests for Vue 3 + TypeScript + Vitest + Pinia codebases, covering components, composables, and stores with behavior-first assertions.

Automates repeated rounds of Copilot code review on GitHub pull requests: triggers review, triages threads, dispatches parallel fix agents, commits, replies, and loops until convergence.