Test automation tutorials, frameworks, and tools — from first scripts to full CI/CD pipelines.
Test Automation
Embedded firmware has a reputation for being hard to test. The hardware isn't always available, the toolchain is different from your host machine, and most C codebases were never written with testability in mind. But unit testing firmware is not only possible — it is one of the highest-
Testing Strategies
Canary deployments and shadow deployments both use production traffic to validate new code before full rollout. Both reduce release risk compared to big-bang deployments. But they expose different amounts of risk to real users and answer different questions — choosing the wrong one can either leave dangerous bugs undetected or
API Testing
Most Postman users write basic tests — pm.response.to.have.status(200) — and call it done. Postman's scripting layer goes much deeper: pre-request scripts that generate dynamic data, test scripts that chain requests, and data-driven testing that runs a collection against hundreds of inputs. This guide
Test Automation
JavaScript tests that make real HTTP requests are slow and unreliable. Manual mocks for fetch or axios require constant maintenance as APIs evolve. Polly.js solves both problems by recording real HTTP interactions and replaying them in subsequent test runs — giving you test speed and isolation without sacrificing the accuracy
Test Automation
Electron brings web technologies to the desktop, but testing Electron applications has historically been painful. Tools built for browsers don't map cleanly to desktop windows, native menus, or IPC channels. Playwright's native Electron support changes that equation dramatically. As of Playwright 1.9+, you can drive
Test Automation
Pinia replaced Vuex as Vue's recommended state management solution, and it's dramatically more testable. Stores are plain objects with no magic mutations — actions are async functions, getters are computed properties, and state is just reactive data. This makes testing straightforward once you know the patterns. Setup:
Browser Testing
Percy is a visual testing platform (now part of BrowserStack) that catches UI regressions through automated screenshot comparisons. Where functional tests check that code does the right thing, Percy checks that the UI looks right. This guide covers what Percy does, how to integrate it with Playwright, Cypress, and Selenium,
Browser Testing
Cross-browser testing used to mean maintaining a lab of physical devices and running multiple VMs with different browser versions. BrowserStack Live eliminates that infrastructure problem by giving you instant remote access to real browsers and real devices through your browser. This guide covers what BrowserStack Live offers, how to
Browser Testing
BrowserStack Automate lets you run your Selenium and Playwright tests against a cloud grid of real browsers and operating systems. Instead of managing your own browser infrastructure or Selenium Grid, you point your tests at BrowserStack's remote WebDriver endpoint and they handle the rest. This guide covers setup,
Testing Strategy
Coverage metrics are among the most misunderstood tools in software testing. Teams either ignore them entirely or treat 100% coverage as a quality guarantee. Neither position is correct. Coverage metrics measure what your tests exercise, not whether your tests verify the right things. Understanding what each metric tells you — and
Testing Strategy
Most bugs hide at boundaries and in the gaps between valid and invalid inputs. Boundary value analysis and equivalence partitioning are two complementary techniques that systematically target these areas, letting you write fewer tests that cover more of the real risk. Equivalence Partitioning Equivalence partitioning divides the input space into
Test Automation
Three platforms dominate the enterprise cloud testing market: Perfecto (Perforce), BrowserStack, and Sauce Labs (now part of Digital.ai). Each claims comprehensive device coverage, seamless CI/CD integration, and enterprise-grade security. The differences that actually matter emerge when you look at specifics—how many real devices are available, what