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Free tutorials, solved practice problems and interview prep for QA and automation engineers: Python, Playwright, Selenium, SQL, Git and more.
Master Playwright waits: auto-waiting, web-first assertions, waitFor, waitForLoadState, waitForURL, waitForResponse, waitForTimeout, expect.poll, timeouts and fixing timeout errors.
Playwright vs Selenium vs Cypress compared: architecture, languages, browsers, waits, parallel runs, API testing, the same test in all three, ease of learning and which to choose.
Learn TypeScript for Playwright from scratch: project setup, playwright.config.ts, async/await, Page and Locator types, typed test data, page objects, typed fixtures and type checking in CI.
TypeScript generics explained simply: generic functions, arrow functions, constraints with extends, keyof, generic interfaces and classes, utility types, and real Playwright examples.
Learn TypeScript classes and objects step by step: constructors, access modifiers, inheritance, getters, static and abstract classes, classes vs interfaces, and the Playwright Page Object Model.
Beginner guide to TypeScript interfaces: syntax, optional and readonly properties, default values, extends, interface vs type, interface vs class, and real Playwright examples.
Learn TypeScript objects step by step: object types, optional and readonly properties, nested objects, arrays of objects, merging and comparing, with real Playwright test examples.
Learn Playwright testing with practical UI automation exercises for forms, tables, alerts, uploads, tabs, iframes, and more. Includes locator examples and tips for reliable end-to-end tests.
s Prepare for senior QA and SDET interviews with practical sample answers covering quality strategy, team leadership, Playwright, TypeScript, API automation, CI/CD, release decisions, and AI-assisted…
Prepare for SQL and MySQL interviews with scenario-based questions, query examples, joins, window functions, database testing, performance tuning, and interactive practice. Note: I've generated the ready-to-use HTML file,…
Prepare for QA Automation Lead interviews with practical management scenarios and sample answers on team leadership, automation frameworks, release management, quality metrics, and AI-assisted testing.
Arrays are everywhere in test automation — storing test data, collecting page elements, managing results. TypeScript arrays come with strong typing that
Take free timed mock tests with answers and explanations.