Browse QA Skills

Comprehensive Nemo.js test automation skill for PayPal's Selenium-based Node.js testing framework featuring view-driven locators, flexible configuration, Mocha integration, and scalable browser automation patterns.

Designing scalable test architectures including test pyramid, diamond, trophy, and honeycomb patterns with framework-agnostic implementation.

Validating A/B test implementations including traffic splitting accuracy, statistical significance calculation, metric tracking, and experiment cleanup.

Testing PCI-DSS compliance for payment processing including encryption validation, access control testing, and secure data storage verification.

Testing PDF generation including layout verification, content accuracy, font embedding, accessibility (PDF/UA), and cross-platform rendering consistency.

Testing scheduled tasks and cron jobs including execution timing, idempotency, failure recovery, overlap prevention, and timezone handling.

Python-based load testing with Locust for writing user behavior scripts, distributed testing, real-time web UI monitoring, and custom load shapes.

Comprehensive Protractor end-to-end testing skill for Angular and AngularJS applications with Angular-specific locators, automatic waitForAngular synchronization, Page Object patterns, and migration guidance to modern frameworks.

Testing API rate limiting implementations including throttling behavior, burst handling, rate limit headers, and distributed rate limiting patterns.

Testing concurrent code including race condition detection, deadlock prevention, thread safety verification, and parallel execution correctness.

NestJS application testing with @nestjs/testing, dependency injection mocking, e2e testing with supertest, guard testing, and pipe validation testing.

Testing Server-Sent Events implementations including event stream validation, reconnection behavior, event ID tracking, and EventSource client testing.

Testing distributed tracing implementations including context propagation, span correlation, baggage handling, and trace sampling verification.

Integration testing with Sentry for error tracking, performance monitoring, and release health verification in production environments.

Writing and testing YARA rules for malware detection, threat hunting, and file classification with rule validation and false-positive rate testing.

Modern JavaScript testing strategies with Jest, Mocha, and testing best practices covering unit testing, integration testing, mocking, async patterns, and DOM testing.

Testing augmented and virtual reality applications including spatial tracking, gesture recognition, performance on headsets, and motion sickness testing.

API simulation and service virtualization with WireMock for HTTP stubbing, request matching, stateful behavior, and fault injection testing.

Testing distributed tracing and observability instrumentation with OpenTelemetry including span verification, metric collection, and log correlation.