Use when the user mentions flaky tests, tests that pass locally but fail in CI, race conditions in tests, or needs to diagnose WHY a specific test fails.
Use when the user wants to audit test quality, find flaky test patterns, speed up test execution, or prepare for Swift Testing migration.
Use when debugging schema migration crashes, concurrency thread-confinement errors, N+1 query performance, SwiftData to Core Data bridging, or testing migrations without data loss…
Use when adding debug-only deep links for testing, enabling simulator navigation to specific screens, or integrating with automated testing workflows - enables closed-loop…
Use when implementing in-app purchases, StoreKit 2, subscriptions, or transaction handling - testing-first workflow with .storekit configuration, StoreManager architecture,…
Use when SwiftData migrations crash, fail to preserve relationships, lose data, or work in simulator but fail on device - systematic diagnostics for schema version mismatches,…
Use when the user mentions simulator testing, visual verification, push notification testing, location simulation, or screenshot capture.
Use when writing ANY test, debugging flaky tests, making tests faster, or choosing Swift Testing vs XCTest. Covers unit tests, UI tests, async testing, test architecture.
Use when testing async code with Swift Testing. Covers confirmation for callbacks, @MainActor tests, async/await patterns, timeout control, XCTest migration, parallel test…
Use when writing UI tests, recording interactions, tests have race conditions, timing dependencies, inconsistent pass/fail behavior, or XCTest UI tests are flaky - covers…
Use when writing, running, or debugging XCUITests. Covers element queries, waiting strategies, accessibility identifiers, test plans, and CI/CD test execution patterns.
Choose between in-process `tower::ServiceExt::oneshot` tests and real `tokio::net::TcpListener` server tests for Axum services in this repository.
Run Playwright tests at scale with cloud-hosted browsers and integrated Azure portal reporting.
Azure Resource Manager SDK for Microsoft Playwright Testing in .NET. Use for MANAGEMENT PLANE operations: creating/managing Playwright Testing workspaces, checking name…
Create and manage Azure Test Plans including test cases, suites, and execution. Use when setting up test plans or managing QA processes.
Test software in the style of James Bach, pioneer of exploratory testing and context-driven testing. Emphasizes skilled human investigation, heuristics-based test design, and…
Backtest results interpreter and strategy evaluator. Analyzes historical backtest performance, identifies strengths/weaknesses, and provides actionable recommendations for…
Critical fix for backtest capital accounting when equity curves are inflated or drawdown metrics are meaningless
Converting backtest visualizations from bar indices/timesteps to actual datetime axes for clearer time context
Expert guidance for systematic backtesting of trading strategies. Use when developing, testing, stress-testing, or validating quantitative trading strategies.
Save backtest results to SQLite database for comparison. Trigger when: (1) tracking backtest history, (2) comparing model performance, (3) querying best backtests.
Comprehensive guidance for interpreting backtest results and detecting overfitting (project)
Phylax Credible Layer assertions backtesting. Runs assertion backtests against historical transactions.
Build robust, production-grade backtesting systems that avoid common pitfalls and produce reliable strategy performance estimates.
Build robust backtesting systems for trading strategies with proper handling of look-ahead bias, survivorship bias, and transaction costs.
Build robust backtesting systems for trading strategies with proper handling of look-ahead bias, survivorship bias, and transaction costs.
backtesting.py configuration for SQL oracle validation and range bar pattern backtesting. Use when running backtesting.py against ClickHouse SQL results, configuring Backtest()…
Backtest crypto and traditional trading strategies against historical data. Calculates performance metrics (Sharpe, Sortino, max drawdown), generates equity curves, and optimizes…
Comprehensive guide to backward compatibility rules for APIs, databases, and data contracts with migration strategies and testing approaches
Analyze game balance by extracting stats from code and running mathematical simulations. Calculates DPS tier lists, TTK matrices, EHP comparisons, and character power rankings.
Configure CI/CD pipelines for BambooHR integrations with GitHub Actions, automated testing, and secret management.
Create a minimal working BambooHR example — fetch employee directory and single employee. Use when starting a new BambooHR integration, testing your setup, or learning basic…
Configure BambooHR local development with hot reload, mocking, and testing. Use when setting up a development environment, configuring test workflows, or establishing a fast…
Run isolated eval and grading calls using CC 2.1.81 --bare mode. Constructs claude -p --bare invocations for skill evaluation, trigger testing, and LLM grading without plugin/hook…
Master Bash Automated Testing System (Bats) for comprehensive shell script testing. Use when writing tests for shell scripts, CI/CD pipelines, or requiring test-driven de — from…
Master Bash Automated Testing System (Bats) for comprehensive shell script testing. Use when writing tests for shell scripts, CI/CD pipelines, or requiring test-driven de — from…
Master Bash Automated Testing System (Bats) for comprehensive shell script testing. Use when writing tests for shell scripts, CI/CD pipelines, or requiring test-driven de — from…
Applies Bayesian reasoning to systematically update probability estimates with new evidence, helping make better forecasts and avoid overconfidence.
Guide developers through Behavior-Driven Development workflow. Use when: writing BDD scenarios, using Gherkin syntax, Given-When-Then format, feature files, Three Amigos…
Python 環境における BDD（Gherkin + behave）自動テスト実装を専門的に支援する コーディングエージェント向けスキル定義。 spec-weaver の trace 機能を前提とし、仕様・設計・実装を逆引きしながら 「あるべき振る舞い」をテストとして固定化する。 テストが現在の実装と乖離して失敗することは設計上正常であり歓迎される。…
Behavior-Driven Development skill using Cucumber, covering feature files, step definitions, Gherkin best practices, data tables, scenario outlines, and hooks.
Use when: writing Gherkin BDD scenarios for PHR/payroll workflows, creating feature files for lpbunified or WCS modules, building Xray traceability, or translating business…
BDD orchestrator for feature-level work. Use when user says 'add', 'implement', 'build', 'feature', 'iteration', 'story', 'phase', 'resume', 'continue', or references a…
Writes behavior specifications in Gherkin format. Use when defining features from user perspective or creating acceptance tests.
Behavior-Driven Development (BDD) で振る舞いを定義・シナリオ化するためのガイド。Given-When-Then と Gherkin で受け入れ条件やエッジケースを整理し、失敗パターンや小さく始める導入ステップを含めて、業務言語で明確なシナリオを書くときに使う。 — from engineering/testing
Behavior-Driven Development (BDD) で振る舞いを定義・シナリオ化するためのガイド。Given-When-Then と Gherkin で受け入れ条件やエッジケースを整理し、失敗パターンや小さく始める導入ステップを含めて、業務言語で明確なシナリオを書くときに使う。 — from…
Writing Given/When/Then specifications in Behavior-Driven Development. Covers feature files, scenario outlines, data tables, and mapping specs to implementations.
Implementing BDD specifications in TypeScript with Vitest and Effect. Covers step definitions, hooks, context sharing, and Effect-based test patterns.
Complete Behavior-Driven Development workflow coordinating SCENARIO → STEP DEFINITIONS → IMPLEMENT → REFACTOR cycle with Given/When/Then scenarios.
Browser debugging and telemetry via Chrome DevTools Protocol. Use when testing the Astro dev server, inspecting network requests, debugging console errors, capturing screenshots,…
Develop software in the style of Kent Beck, creator of Test-Driven Development and Extreme Programming.
Generates Behat BDD tests for PHP with Gherkin feature files and MinkContext for browser testing. Use when user mentions "Behat", "PHP BDD", "Mink", "behat.yml".
Checks code for best practice violations including DRY violations, SOLID principles, error handling patterns, testing practices, documentation standards, and version control…
Use when fixing issues identified in beta tester feedback. Guides systematic root cause analysis, worktree-based fixes, regression testing, and release preparation.
Beta testing strategy for iOS/macOS apps. Covers TestFlight program setup, beta tester recruitment, feedback collection methodology, user interviews, signal-vs-noise…
Extract, filter, annotate, and export differential expression results from DESeq2 or edgeR. Use for identifying significant genes, applying multiple testing corrections — from…
Handles batch effects in bulk RNA-seq via design-matrix inclusion (the correct path for DE), ComBat/ComBat-seq for visualization, SVA for unknown latent factors, RUVSeq for…
Extracts, filters, annotates, and exports differential expression results from DESeq2 or edgeR with proper handling of padj=NA (independent filtering, Cook's outliers, all-zero),…
Performs differential expression on bulk RNA-seq count data with DESeq2's negative-binomial GLM, Wald and LRT testing, apeglm/ashr/normal LFC shrinkage, independent filtering,…
Compare gene co-expression and regulatory networks between biological conditions to find rewired relationships using DiffCorr, DiffCoEx, DINGO/iDINGO, and CoDiNA.