Wraps Jest's built-in modern fake-timers (built on @sinonjs/fake-timers since Jest 27): jest.useFakeTimers(), jest.setSystemTime(), jest.advanceTimersByTime(),…
Write JavaScript/TypeScript tests with Jest including unit tests, mocking, snapshots, and coverage. Test React components, async code, and Node.js.
Generates Jest unit and integration tests in JavaScript or TypeScript. Covers mocking, snapshots, async testing, and React component testing.
Execute and generate Jest tests for JavaScript/TypeScript projects with support for unit, integration, and E2E testing
Automated Jest test case generation from AST and type signatures. Bazel rules_jest integration, property-based test scaffolding, snapshot generation, and coverage-driven test…
Automatically activated when user works with Jest tests, mentions Jest configuration, asks about Jest matchers/mocks, or has files matching *.test.js, *.test.ts, jest.config.*.
Use when jest testing patterns including unit tests, mocks, spies, snapshots, and assertion techniques for comprehensive test coverage.
Transform a Jest test file from packages/
/src into a Vitest test file under packages//vitest, following the Matterbridge migration pattern (vitest-utils package, vi…
Unit testing skill using Jest for TypeScript and JavaScript, covering mocking, spies, snapshots, coverage, async testing, and custom matchers.
Use when testing whether a project clears the Journal of Economic Theory (JET) scope gate — a rigorous, original theoretical contribution in a core theory area, with…
Use when designing or stress-testing an asset-pricing test for a The Journal of Finance (JF) manuscript — factor models, Fama–MacBeth vs.
Use when planning or auditing the robustness, sensitivity, and multiple-testing battery for a The Journal of Finance (JF) manuscript.
Use when settling the measurement and estimation choices of a Journal of Financial Economics (JFE) manuscript — factor construction, portfolio sorts, Fama-MacBeth/GMM,…
Use when planning or stress-testing the analysis behind a Journal of Financial Intermediation (JFI) paper — bank/loan-level panel work, demand-absorbing specifications, and the…
Expert assistant for Juju charm development using jhack utilities. Use when debugging charms, inspecting relations, syncing code, replaying events, testing scenarios, or…
Use when stress-testing causal identification for a Journal of Human Resources empirical-micro manuscript, including RCT, DID, RDD, IV, event studies, decompositions, policy…
Control Chrome browser via CLI for testing, automation, and debugging. Use when the user needs browser automation, screenshots, form filling or page inspection.
Integrate third-party repository history into the monorepo by adding remotes and creating workspaces.
Use when building or stress-testing the empirical/quantitative analysis for a Journal of Monetary Economics (JME) manuscript — VAR/SVAR, local projections, DSGE estimation, moment…
Load and performance testing skill using Apache JMeter, covering test plans, thread groups, assertions, listeners, timers, and distributed testing.
Authors Apache JMeter `.jmx` test plans (Thread Groups + HTTP samplers + assertions + listeners) in the JMeter GUI, runs them headlessly via `jmeter -n -t plan.jmx -l…
Jmeter Test Plan Creator - Auto-activating skill for Performance Testing. Triggers on: jmeter test plan creator, jmeter test plan creator Part of the Performance Testing skill…
Retrieve the latest journal issue's table of contents and abstracts from URL/DOI/PMID/RSS/TOC sources, then generate Chinese key points locally (no external translation APIs) when…
Execute feature stories systematically with TDD-first workflow, story discovery, and production-ready completion gates.
Converts one JavaScript source file to strict TypeScript 5.x, resolves all tsc errors without @ts-ignore, and confirms the Jest suite is unchanged.
Use when a diff may lack tests — missing assertions, uncovered branches, over-mocking, no regression test for a bug fix — dispatched by /review-changes, /do-and-judge, /judge,…
JUnit 5 core testing patterns with AAA structure, test organization, and coverage standards
Use when jUnit fundamentals including annotations, assertions, and test lifecycle for Java testing.
Maven integration testing with Failsafe plugin, IT naming conventions, and profile configuration
Create and manage Jupyter notebooks for testing Adobe Edge Delivery Services (EDS) blocks interactively in the browser using the ipynb-viewer block.
Gera scrapers Python (baseados em requests) para tribunais brasileiros seguindo a arquitetura do pacote juscraper.
Level 3 patterns - test-smart, deploy, migrate, logs, status (production systems)
Level 1 patterns - test-watch, integration-test, complexity, loc, duplicates, slowtests
Post-implementation audit that justifies every change against a minimal-intervention standard. Detects AI additive bias, test-logic tampering, and unnecessary complexity.
Production-grade load, stress, spike, and endurance testing using Grafana k6 and Python Locust. Use when designing performance test suites, defining SLAs/SLOs, simulating…
Comprehensive k6 load testing skill for API, browser, and scalability testing. Write realistic load scenarios, analyze results, and integrate with CI/CD.
A modern open-source load testing tool from Grafana Labs, written in Go with JavaScript scripting. Enables developers to write performance tests as code, run HTTP/WebSocket/gRPC…
Kailash MCP (Model Context Protocol) - production-ready MCP server implementation for AI agent integration.
Rust formal verification using Kani model checker. Use when verifying Rust code for memory safety, undefined behavior, panics, arithmetic overflows, or custom correctness…
Generates Karma test runner configurations for browser-based JavaScript testing. Works with Jasmine, Mocha, or QUnit.
Use when the user asks to invoke, delegate to, or collaborate with Codex on any task. Also use PROACTIVELY when an independent, non-Claude perspective from Codex would add value —…
Build Kotlin Multiplatform / Android app features with the Kide MVI library. Use when creating or modifying screens, processors, ViewStates, ViewIntents, side effects, or…
Analyze surviving mutants from a mutation testing run and write targeted unit tests to kill them. Re-runs mutations to confirm kills.
Expert KillBill administrator for managing billing, subscriptions, invoices, and overdue states. Provides ready-to-use commands via Traefik DNS for tenant management, catalog…
Writing and testing executable code snippets in the Kindlings user guide. Expected output verification syntax, running snippet tests (just test-snippets), template variables.
Deep analysis debugging mode for complex issues. Activates methodical investigation protocol with evidence gathering, hypothesis testing, and rigorous verification.
Table-driven testing patterns using @kitz/test. Triggers on creating test cases, parameterized tests, or when writing .test.ts files.
Type assertion patterns using @kitz/assert. Triggers on type-level tests, .test-d.ts files, or when asserting TypeScript types.
Configure CI/CD pipelines for Klaviyo integrations with GitHub Actions. Use when setting up automated testing, configuring CI secrets, or integrating Klaviyo SDK tests into your…
Create a minimal working Klaviyo example with real API calls. Use when starting a new Klaviyo integration, testing your setup, or learning basic profile creation and event…
Configure Klaviyo local development with hot reload, mocking, and testing. Use when setting up a development environment, configuring test workflows, or establishing a fast…
Use when creating Lit web components with TypeScript decorators, JSDoc documentation, Zod validation, and Playwright testing.
Create your first Kling AI video generation with a minimal working example. Use when learning Kling AI or testing your setup.
Select Kotlin Multiplatform ecosystem libraries, services, and tools for persistence, networking, DI, navigation, logging, observability, testing, code quality, resources, images,…
Diagnose and fix Kotlin Multiplatform Gradle, source-set, dependency, Android target, Compose plugin, KGP/AGP, testing, static-analysis, and CI issues.
Design and review KMP testing strategy, commonTest, kotlin.test, platform tests, Compose Multiplatform UI tests, screenshot tests, test doubles, refactor safety, code review…
Helps write, migrate, and improve Kotlin tests using the Kotest testing framework. Covers test spec styles (FunSpec, DescribeSpec, BehaviorSpec, etc.), assertions (shouldBe,…
Guides unit and integration testing with Kotest for Kotlin/Android. Use when writing tests for Kotlin code, testing ViewModels, coroutines, or Compose UI.
Expert patterns for Kotlin Coroutines and Flow, covering structured concurrency, error handling, and testing.
中文优先：用于Kotlincoroutinesflows相关任务，帮助识别、设计、实现或验证对应工作流。English keywords: Kotlin Coroutines and Flow patterns for Android and KMP — structured concurrency, Flow operators, StateFlow,…