Testing & QA
Testing & QA covers the essential practices and frameworks for delivering reliable software — from unit tests and integration tests to end-to-end browser testing with industry-standard tools like Jest, Playwright, Cypress, and Testing Library. Master how modern teams ship bug-free code with confidence.
Tutorials in This Section
Learning Path
flowchart LR
A[Testing Basics] --> B[Jest]
A --> C[Testing Library]
B --> D[Playwright]
B --> E[Cypress]
C --> D
C --> E
Built by the developers of Doda Browser, DodaZIP, and Durga Antivirus Pro.
Pages in this section
Software Testing Explained — Unit, Integration, and E2E Testing Guide
Learn software testing fundamentals: unit vs integration vs E2E tests, TDD vs BDD, the test pyramid, and how modern teams build reliable software.
✓ LiveJest Testing Framework — Complete Guide with Examples
Learn Jest testing framework: setup, matchers, mocks, async testing, code coverage, and how to write reliable JavaScript tests.
✓ LivePlaywright Browser Testing — End-to-End Testing Guide
Learn Playwright for browser automation: cross-browser testing, locators, assertions, test isolation, CI integration, and real-world E2E testing patterns.
✓ LiveCypress E2E Testing Framework — Practical Guide
Learn Cypress for end-to-end testing: setup, commands, assertions, fixtures, network interceptors, dashboard, and real-world E2E patterns.
✓ LiveEnd-to-End Testing: Complete Guide with Playwright
Learn end-to-end testing with Playwright: setup, writing tests, assertions, page object model, CI integration, and visual regression testing for modern web applications.
✓ LiveTesting Library Guide — Writing Better Frontend Tests
Learn Testing Library for frontend tests: DOM queries (getBy, findBy, queryBy), user events, accessibility testing, and best practices for React components.
✓ LiveMocking in Tests: Complete Guide
Learn mocking in tests: what mocking is, when to mock, unittest.mock patterns in Python, Jest mocks in JavaScript, patching, spies, stubs, and best practices for test doubles.
✓ LiveIntegration Testing: Best Practices and Patterns
Learn integration testing: testing databases, API integrations, test containers, seed data strategies, CI pipeline integration, and patterns for reliable integration tests.
✓ LiveSelenium WebDriver: Complete Guide to Browser Automation with Python
Learn Selenium WebDriver: setup with Python, element locators (ID, CSS, XPath), explicit and implicit waits, Page Object Model pattern, and running tests in headless mode for CI/CD.
✓ LiveMocha and Chai: Complete JavaScript Testing Guide with BDD and TDD
Learn Mocha test framework and Chai assertion library: setup, BDD and TDD styles, hooks (before/after), async testing, and how to structure your test suite for maintainability.
✓ LiveJasmine and Karma: Angular Testing with Spies and Test Runner
Learn Jasmine testing framework with Karma test runner: describe/it syntax, matchers, spies for mocking, Angular TestBed setup, component testing, and Karma configuration for CI/CD.
✓ LiveAPI Testing Guide: REST API Testing with Postman, Newman, and Contract Tests
Learn API testing: REST API fundamentals, writing Postman collections for CRUD operations, running collections in CI with Newman, contract testing with schemas, and automating API test suites.
✓ LiveVisual Regression Testing: Percy, Applitools, and Snapshot Testing Guide
Learn visual regression testing: pixel comparison, snapshot testing with Percy and Applitools Eyes, integrating visual tests into CI/CD, managing baselines, and handling dynamic content.
✓ LiveLoad Testing with k6: Scripts, Virtual Users, Thresholds, and Browser Testing
Learn load testing with k6: writing test scripts in JavaScript, configuring virtual users and stages, setting pass/fail thresholds, browser-level testing, and integrating performance tests into CI/CD.
✓ LiveMobile Testing with Appium: iOS and Android Automation Complete Guide
Learn mobile testing with Appium: setup for iOS and Android automation, element locators for mobile, gesture simulation, cloud device testing with BrowserStack/Sauce Labs, and CI/CD integration.
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