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DevOps & Automation · Foundational

End-to-End Test (E2E)

An automated test that validates a complete user workflow through the entire application stack.

Definition

E2E tests (for example with Playwright, Selenium, or Cypress) give the highest confidence but are slow, brittle, and expensive, so they are kept few in number.

Example

A Playwright test logs in, adds an item to the cart, and completes checkout in a staging environment.

Exam tip

Too many E2E tests creates an 'ice-cream cone' anti-pattern; prefer many unit tests.

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