CI/CD pipeline guides — integrate automated testing into your deployment pipeline and ship with confidence.
Testing
A slow test suite kills developer flow. When Jest runs 800 tests sequentially it can take 8-12 minutes. With sharding across 4 parallel GitHub Actions runners, that drops to 2-3 minutes — same compute budget, 4× faster feedback. Here's how to set it up. How Jest Sharding Works Jest&
Testing
Cypress Cloud (formerly Dashboard) offers parallelization as a paid feature. The open-source cypress-parallel package delivers similar speed gains without the subscription. It distributes spec files across multiple CI workers using timing data from previous runs. Here's how to set it up. What cypress-parallel Does cypress-parallel reads your spec
Testing
Playwright generates a rich interactive HTML report — but it only exists locally after a test run. Pushing it to GitHub Pages gives your team a permanent, browsable URL for every test run without spinning up any infrastructure. Here's the complete setup. What You Get After following this guide:
Testing
Vitest's built-in reporters — verbose, dot, tap, junit — cover most cases. But sometimes you need test output in a custom format: a Slack message shaped exactly how your team wants it, a JSON file that feeds your internal dashboard, or a compact CI format that highlights only failures. Writing
Testing
Test results that live only in CI logs are easy to miss. Routing pass/fail summaries to Slack means the right people see failures the moment they happen — not hours later when someone thinks to check the pipeline. Here's how to set it up with webhooks. Creating a
Accessibility Testing
Pa11y CI is a command-line accessibility testing tool built for CI pipelines. Unlike browser-extension audits, it runs headlessly, accepts a list of URLs, and exits with a non-zero code when violations exceed your threshold. That makes it a straightforward gate in any pipeline. This guide covers production-ready pa11y-ci configuration: threshold
Testing
Getting BDD tests to pass on a developer's laptop is one problem. Getting them to run reliably in a CI/CD pipeline — in parallel, with good reporting, fast feedback, and minimal flakiness — is a different problem entirely. Many teams set up Cucumber locally but struggle to make it
Accessibility Testing
Axe-core tells you whether your ARIA attributes are structurally correct. A screen reader tells you whether those attributes produce coherent output. These are different questions. A button can have aria-label="Submit form" and pass every automated check while a real screen reader announces it as "Submit form,
Accessibility Testing
Color contrast and keyboard navigation are two of the most commonly failed WCAG criteria. Color contrast (SC 1.4.3) requires a 4.5:1 ratio for normal text and 3:1 for large text. Keyboard accessibility (SC 2.1.1) requires all functionality to be operable from a keyboard.
Unreal Engine
Unreal Engine's Automation Testing system is powerful and chronically underdocumented. Most teams know IMPLEMENT_SIMPLE_AUTOMATION_TEST for smoke tests, but UE5's Spec framework — modeled after RSpec/Jasmine — enables the kind of structured, readable test suites that scale to complex game systems without becoming unmaintainable. This
Unity
Unity's Test Framework goes far beyond simple [Test] attributes on edit-mode assertions. Once your game reaches production complexity — async systems, multi-scene architectures, physics-driven gameplay — you need play mode tests that run inside the engine loop, performance benchmarks that catch frame-rate regressions, and a CI pipeline that fails builds
Testing
Argos CI is a visual testing platform that compares screenshots between your main branch and pull requests. When a PR changes the visual appearance of a component or page, Argos shows the before/after diff in GitHub and can block the PR until a team member approves the change. It