Testing
Unit tests, integration tests, test automation
testing
by meteor
Use when writing tests, debugging test failures, running the test suite, or setting up test infrastructure. Covers self-test, package tests, and modern E2E tests.
modern-tools
by meteor
Use when working with tools-core utilities, rspack integration, or modern tooling. Covers logging, npm management, process spawning, git helpers, and Meteor app configuration APIs.
refactor
by mgiovani
"Safe codebase refactoring with characterization tests, incremental changes, and continuous verification. Automatically activates when users want to refactor code, extract methods/classes, simplify logic, reduce duplication, improve naming, restructure modules, or clean up technical debt."
counterexample-explainer
by ArabelaTso
Explain why counterexamples violate specifications by analyzing formal specifications (temporal logic, invariants, pre/postconditions, code contracts), informal requirements (user stories, acceptance criteria), test specifications (assertions, property-based tests), and providing step-by-step traces showing state changes, comparing expected vs actual behavior, identifying root causes, and assessing violation impact. Use when debugging test failures, understanding model checker output, explaining runtime assertion violations, analyzing static analysis warnings, or teaching specification concepts. Produces structured markdown explanations with traces, comparisons, state diagrams, and cause chains. Triggers when users ask why something failed, explain a violation, understand a counterexample, debug a specification, or analyze why a test fails.
coverage-enhancer
by ArabelaTso
Analyze existing test suites and source code to suggest additional unit tests that improve test coverage. Use this skill when working with test files and source code to identify untested code paths, missing edge cases, uncovered branches, untested error conditions, and gaps in test coverage. Supports major testing frameworks (pytest, Jest, JUnit, Go testing, etc.) and generates targeted test suggestions based on coverage analysis.
bug-reproduction-test-generator
by ArabelaTso
"Automatically generates executable tests that reproduce reported bugs from issue reports and code repositories. Use when users need to: (1) Create a test that reproduces a bug described in an issue report, (2) Generate failing tests from bug descriptions, stack traces, or error messages, (3) Validate bug reports by creating reproducible test cases, (4) Convert issue reports into executable regression tests. Takes a repository and issue report as input and produces test code that reliably triggers the reported bug."
project-specification
by athola
"Transform project briefs into testable specifications with acceptance criteria. Use for requirements translation, spec creation, pre-implementation. Skip if spec exists or still exploring."
architecture-paradigm-functional-core
by athola
'Functional Core, Imperative Shell: isolate deterministic logic from
makefile-dogfooder
by athola
'Use this skill BEFORE releasing any plugin to verify Makefile coverage.
methodology-curator
by athola
Surfaces expert frameworks and proven methodologies before creating OR
response-compression
by athola
hype, and unnecessary framing. Includes termination and directness guidelines.
mcp-code-execution
by athola
'Use this skill BEFORE building complex tool chains. Optimize proactively.
project-execution
by athola
"Execute implementation plans with checkpoint validation, progress tracking, and quality gates. Use for task implementation, plan execution, progress tracking. Skip if no plan exists."
skill-authoring
by athola
'Guide to effective Claude Code skill authoring using TDD methodology
cpu-gpu-performance
by athola
'Use this skill BEFORE resource-intensive operations. Establish baselines
shared-patterns
by athola
'Reference these patterns to validate consistency across the ecosystem.
fact-check
by leonardomso
Verify technical accuracy of JavaScript concept pages by checking code examples, MDN/ECMAScript compliance, and external resources to prevent misinformation
concept-workflow
by leonardomso
End-to-end workflow for creating complete JavaScript concept documentation, orchestrating all skills from research to final review
fact-check
by leonardomso
Verify technical accuracy of JavaScript concept pages by checking code examples, MDN/ECMAScript compliance, and external resources to prevent misinformation
concept-workflow
by leonardomso
End-to-end workflow for creating complete JavaScript concept documentation, orchestrating all skills from research to final review
test-writer
by leonardomso
Generate comprehensive Vitest tests for code examples in JavaScript concept documentation pages, following project conventions and referencing source lines
test-writer
by leonardomso
Generate comprehensive Vitest tests for code examples in JavaScript concept documentation pages, following project conventions and referencing source lines
nav-loop
by alekspetrov
Run tasks until complete with structured completion signals. Auto-invoke when user says "run until done", "keep going until complete", "iterate until finished", "loop mode", "autonomous mode".
backend-test
by alekspetrov
Generate backend tests (unit, integration, mocks). Auto-invoke when user says "write test for", "add test", "test this", or "create test".