Guides
Guides
by Assert.
Evergreen guides on end-to-end testing, Playwright maintenance, AI-assisted test generation, and Markdown-based workflows.
17 articles in this collection
Why End-to-End Testing Matters for Real Product Teams
Why end-to-end testing matters, what unit and integration tests miss, and how to cover real user flows without drowning in maintenance.
Why Playwright Tests Break So Often
Understand why Playwright tests become brittle over time: selector drift, UI changes, timing issues, and the authoring decisions that cause most maintenance overhead.
How to Maintain E2E Tests When the UI Keeps Changing
A practical approach to maintaining end-to-end tests when labels, selectors, layouts, and workflows evolve continuously — without letting maintenance become a blocker.
AI-Generated Playwright Tests: What Works and What Does Not
Where AI-generated Playwright tests genuinely help, where they fall short, and how to build a workflow where AI output becomes a durable, maintainable asset rather than disposable code.
Why Markdown-Based Test Automation Is Easier to Maintain
How defining test scenarios in plain-English Markdown makes them easier to review, version, update, and trust — and why that matters more than it might initially seem.
How to Write Playwright Tests: A Practical Guide for Product Teams
A practical guide to writing Playwright tests that are reliable, readable, and maintainable — from your first test file to a workflow that scales with the product.
Running Playwright Tests in CI/CD: A Practical Setup Guide
How to integrate Playwright into your CI/CD pipeline — GitHub Actions, GitLab CI, and general patterns — so tests run automatically on every pull request and block broken deploys.
End-to-End Testing Best Practices for Engineering Teams
The principles and habits that separate E2E test suites that stay useful over time from suites that decay into noise — covering selector strategy, test scope, CI integration, and team workflow.
How to Debug Playwright Tests: Tools, Techniques, and Common Fixes
A practical guide to diagnosing and fixing failing Playwright tests — covering the Playwright Inspector, trace viewer, screenshot analysis, and the most common failure patterns.
Playwright Page Object Model: When It Helps and When It Hurts
A practical guide to the Page Object Model pattern in Playwright — what it solves, where it adds unnecessary complexity, and how Markdown-first workflows remove the need for it entirely.
Playwright Locators and Selectors: The Complete Guide
How to choose the right Playwright locators, why role-based selectors beat CSS and XPath, and what selector strategy keeps your tests stable as the UI evolves.
How to Fix Flaky Tests: Root Causes and Lasting Solutions
Why Playwright tests become flaky, the most common root causes, and how to fix flakiness systematically rather than suppressing it with retries.
Playwright Parallel Test Execution: Speed Up Your CI Pipeline
How Playwright parallel execution works, how to configure workers, shard tests across machines, and avoid the state isolation problems that make parallel tests flaky.
Playwright Fixtures: Reusable Setup Without the Boilerplate
What Playwright fixtures are, how they replace beforeEach boilerplate, and how to build a fixture library that makes your test suite faster to write and easier to maintain.
Playwright Visual Regression Testing: Screenshots, Snapshots, and Trade-offs
How Playwright's built-in screenshot comparison works, when visual regression testing is worth the maintenance cost, and what alternatives exist for UI change detection.
Playwright Test Reporting: HTML Reports, CI Integration, and Result Visibility
How Playwright's built-in reporters work, how to configure HTML reports and CI output, and how to make test results visible and actionable for your whole team.
What Is Regression Testing? A Practical Guide for Product Teams
What regression testing means, why it matters for teams shipping frequently, and how automated E2E tests are the most practical way to catch regressions before users do.
Durable content,
not a throwaway blog feed.
These pages focus on the real maintenance and workflow problems teams hit with end-to-end testing. Designed to stay useful over time and connect directly to Assert's repo-native Playwright workflow.