E2e Testing Patterns

This is your reference guide when you need to build or fix end-to-end tests that actually work in CI. It covers the practical stuff: stable selectors, handling flaky tests, parallelization strategies, and setting up test isolation. The implementation playbook walks through templates for common patterns like multi-browser testing and accessibility validation. Use it when you're testing critical user flows or debugging why your E2E suite keeps failing at 2am. It won't help with unit tests or environments where UI automation isn't feasible, but if you're shipping web apps and need confidence before deploy, this gives you the patterns to make that happen.

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last updated: Jun 3, 2026

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Install

$ npx -y skills add sickn33/antigravity-awesome-skills --skill e2e-testing-patterns --agent claude-code

Installs into .claude/skills of the current project.

Files

E2E Testing Patterns

Build reliable, fast, and maintainable end-to-end test suites that provide confidence to ship code quickly and catch regressions before users do.

Use this skill when

Implementing end-to-end test automation
Debugging flaky or unreliable tests
Testing critical user workflows
Setting up CI/CD test pipelines
Testing across multiple browsers
Validating accessibility requirements
Testing responsive designs
Establishing E2E testing standards

Do not use this skill when

You only need unit or integration tests
The environment cannot support stable UI automation
You cannot provision safe test accounts or data

Instructions

Identify critical user journeys and success criteria.
Build stable selectors and test data strategies.
Implement isolated tests with observable assertions and tracing; diagnose retries rather than counting a retry as an ordinary pass.
Run in CI with parallelization and artifact capture.