Testing & Security

Unit testing framework for Python using pytest. Use when writing test cases, validating code behavior, checking test coverage, or debugging test failures.

Advanced scientific computing for portfolio optimization, statistical testing, and numerical methods. Use when minimizing portfolio variance, fitting distributions to returns data, performing correlation analysis, running hypothesis tests, or solving constrained optimization problems. Provides optimization algorithms (BFGS, SLSQP) and statistical distributions essential for risk modeling.

UEFI Secure Boot configuration and key management. Use when signing boot loaders, managing Secure Boot keys, or creating UEFI-compatible bootable media with signature verification.

Work with modern cryptographic primitives including AES, RSA, elliptic curves, and key derivation functions. Use this skill when implementing or breaking modern encryption schemes in CTF challenges.

WebAssembly runtime execution and instantiation. Use when running compiled WebAssembly modules, testing WASM execution, or interfacing with WASM instances from Python.

Implement Traveling Salesman Problem algorithms for route optimization. Use this skill when finding shortest routes through multiple points, solving pick path problems, implementing nearest neighbor or 2-opt algorithms, or optimizing travel sequences.

Rust testing patterns and best practices. Use this skill when writing, reviewing, or modifying Rust tests. Covers test organization, assertions with pretty_assertions, parameterized tests, and testing multiple input formats.

Implement OAuth 2.0 authentication flows for CRM API access. Use when authenticating with Salesforce, HubSpot, or other CRM APIs, managing access tokens, refreshing expired tokens, or building OAuth-based integrations.

Apply this repository's coding conventions and patterns. Use when writing or reviewing code in this codebase to ensure consistency with established patterns for DI, logging, error handling, testing, and documentation. Auto-trigger when implementing features, fixing bugs, or reviewing code changes.

Browser automation with Playwright for modern web scraping. Use this skill for scraping JavaScript-rendered pages, handling complex interactions, managing multiple browser contexts, or testing web applications. NOT needed for static HTML parsing or processing already-fetched content.

Move testing activities earlier (left) in software development lifecycle - unit tests, TDD, BDD, design for testability, and CI/CD integration. Use when reducing bug costs, implementing DevOps practices, or enabling continuous deployment.

Test environment provisioning, infrastructure as code for testing, Docker/Kubernetes for test environments, service virtualization, and cost optimization. Use when managing test infrastructure, ensuring environment parity, or optimizing testing costs.

Internationalization (i18n) and localization (l10n) testing for global products including translations, locale formats, RTL languages, and cultural appropriateness. Use when launching in new markets or building multi-language products.

Testing in production with feature flags, canary deployments, synthetic monitoring, and chaos engineering. Use when validating real-world behavior, implementing safe deployments, or ensuring production resilience.

Strategic test data generation, management, and privacy compliance. Use when creating test data, handling PII, ensuring GDPR/CCPA compliance, or scaling data generation for realistic testing scenarios.

Run tests using justfile tasks (just test-local for local development, just test-unit, just test-it). Use after implementing features, fixing bugs, when user mentions tests, validation, or before commits. Primary command is 'just test-local' which runs without external dependencies.

Measure quality effectively with actionable metrics. Use when establishing quality dashboards, defining KPIs, or evaluating test effectiveness.

Migrate Python projects from setup.py/setup.cfg to pyproject.toml for use with uv. Use when upgrading legacy Python packaging, converting setup.py to modern pyproject.toml format, setting up dependency groups for development/testing, and ensuring `uv run pytest` works correctly.

Focus testing effort on highest-risk areas using risk assessment and prioritization. Use when planning test strategy, allocating testing resources, or making coverage decisions.

Advanced exploratory testing techniques with Session-Based Test Management (SBTM), RST heuristics, and test tours. Use when planning exploration sessions, investigating bugs, or discovering unknown quality risks.