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What is End-to-End (E2E) Testing?

Automated tests simulating complete user workflows to catch integration issues across AI-generated components from start to finish.

  • Published on: November 14, 2025
  • Updated on: November 14, 2025
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Table of Contents

Meaning

Automated tests that simulate complete user workflows from start to finish.

Definition

E2E testing is particularly important for vibe-coded applications to catch integration issues across AI-generated components. Because different parts of vibe-coded applications might be generated in separate sessions or with different prompts, E2E tests verify that everything works together correctly in real-world usage scenarios.

Example

An E2E test for an e-commerce site: automated browser opens the site, searches for a product, adds it to cart, proceeds to checkout, enters payment information, completes purchase, and verifies order confirmation—testing the entire flow including AI-generated frontend, backend, payment integration, and email system working together.

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