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Resources

Testing Guides & Best Practices

Explore comprehensive guides, tutorials, and best practices for automated testing, debugging, and quality assurance. Stay updated with the latest testing tools and techniques.

The PR Demo Worked. The Merge Broke Checkout.

The PR Demo Worked. The Merge Broke Checkout.

A PR can pass review and CI/CD yet fail after merge. Why isolated validation misses real workflow bugs—and how action-level post-merge testing catches checkout, auth, and onboarding failures.

Your PR Passed Review. The Migration Still Broke Checkout.

Your PR Passed Review. The Migration Still Broke Checkout.

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Schema changes and data migrations fail where CI looks healthy. Test stateful transitions, replay old data, and verify real user workflows across upgrade paths.

DebuggAI Team

20 min read

8/2/2026

Your Agent Opened the PR. Who Verified the Migration Actually Worked?

Your Agent Opened the PR. Who Verified the Migration Actually Worked?

AI agents can ship schema changes fast, but passing CI rarely proves a migration works on real state. Here's why teams must verify workflows after data changes, not just code before merge.

PR Copilot vs AI Test Suites: Where to Start

PR Copilot vs AI Test Suites: Where to Start

A practical breakdown of DebuggAI's two testing products: what each catches, what each misses, and which to set up first.

Why E2E Selectors Break, and How Self-Healing Fixes It

Why E2E Selectors Break, and How Self-Healing Fixes It

The real reasons Playwright and Selenium selectors go stale, what self-healing actually automates, and where it still needs a human.

Wire DebuggAI Into Claude Code or Cursor With MCP

Wire DebuggAI Into Claude Code or Cursor With MCP

Connect the DebuggAI MCP server to Claude Code, Cursor, or Claude Desktop and let your AI agent trigger and read back real browser test runs.

Turn Real Usage Into Regression Tests With AI Test Suites

Turn Real Usage Into Regression Tests With AI Test Suites

DebuggAI crawls your deployed app into a knowledge graph, validates each page and state against a goal, and lets you lock the ones worth protecting into real Playwright-backed tests.

Set Up Automatic PR Testing With DebuggAI in 5 Minutes

Set Up Automatic PR Testing With DebuggAI in 5 Minutes

Install the DebuggAI GitHub App and get AI-generated Playwright tests running against every pull request, with results posted straight to the PR.

Your PR Passed. Your OAuth Login Still Broke.

Your PR Passed. Your OAuth Login Still Broke.

Why auth, redirects, popups, cookies, and identity-provider flows still break after green CI—and why teams need browser-level testing of real user journeys.

The PR Looked Fine Until Login Broke: Why Review Can’t See Session-Level Failures

The PR Looked Fine Until Login Broke: Why Review Can’t See Session-Level Failures

Green builds and clean diffs miss the bugs that emerge only after state accumulates. Here’s why session-level failures slip past review and how to catch them in CI.

Staging Never Had Your OAuth Popup, Cookie Banner, or Broken Redirect

Staging Never Had Your OAuth Popup, Cookie Banner, or Broken Redirect

Green CI often misses the browser-level failures users hit first: OAuth popups, cookie banners, redirect chains, and session handoffs across third-party surfaces.

The PR Looked Fine Until OAuth Sent Users Somewhere Else

The PR Looked Fine Until OAuth Sent Users Somewhere Else

A green PR can still ship a broken login or checkout. Here’s why mocked auth and conventional CI miss redirect, popup, cookie, and session failures—and how to test real user flows before merge.

Your PR Passed. Your OAuth Redirect Still Loops.

Your PR Passed. Your OAuth Redirect Still Loops.

AI-generated auth code can pass CI and still break real login flows. Here’s why OAuth redirect loops evade unit tests and PR checks, and how to test the full browser journey.

Staging Passed. OAuth Didn’t.

Staging Passed. OAuth Didn’t.

Why modern CI/CD misses real auth failures—and how to test OAuth, redirects, consent, cookies, and cross-domain sessions as production workflows.

The PR Bot Approved a Fantasy: Why Diff-Based Review Misses Runtime Regressions

The PR Bot Approved a Fantasy: Why Diff-Based Review Misses Runtime Regressions

AI-generated code can make pull requests look safe while real user workflows break in production. Diff review, unit tests, and CI checks miss runtime regressions where trust actually matters.

Showing 31-45 of 72 resources