Accessibility, visual regression, data quality, localization, PDF and print output, browser extensions and progressive web apps.
Accessibility testing against WCAG 2.2: automated scans with axe-core, pa11y, Lighthouse, WAVE and IBM Equal Access, plus manual screen-reader scripts. Covers keyboard navigation and focus traps, color contrast, ARIA authoring patterns, a CI gate that fails only on new violations, and per-page compliance reports by success criterion. A review agent (accessibility-code-critic) reads component source for WCAG anti-patterns.
Browser extension testing for Chrome and Firefox: Playwright extension fixtures, message-passing tests, and the Manifest V3 test surface. Includes the reload matrix, chrome.storage quota tests and the web-ext Firefox CLI, plus an authoring agent (extension-test-author) that writes one Playwright spec per behavior spec.
Data quality testing for analytical pipelines: dbt tests, Great Expectations, Soda checks, data contracts, and a go / no-go release gate. Extracts data contracts from data-product specs and covers tool choice and severity conventions. Agents (schema-diff-reviewer, data-anomaly-triager) review schema diffs for breaking changes and classify failed checks by anomaly type and likely owner.
Localization and internationalization testing: string coverage, pseudo-localization, right-to-left layouts, and locale date, number and currency formats.
PDF and print testing: per-page PDF snapshot diffs, cross-engine HTML-to-PDF regression, print stylesheet checks, and PDF/UA accessibility. Covers print and PDF output where qa-visual-regression covers the screen.
Progressive web app testing: service worker lifecycle, Workbox caching strategies, offline fallbacks, web push subscriptions, and the install flow. An authoring agent (pwa-test-author) writes one Playwright spec per PWA surface. Distinct from the cross-channel push harness in qa-notifications.
Visual regression testing with Percy, Chromatic, Playwright screenshots and Storybook, plus chart rendering tests for Chart.js, D3 and Vega. Covers responsive breakpoint matrices, baseline conventions, and a binding baseline gate. Agents (visual-diff-classifier, visual-baseline-curator) sort diffs into intentional, incidental or regression and propose an initial baseline set.
