# Neon Testing: a Vitest Library for Your Integration Tests

DevFeed: [Neon Testing: a Vitest Library for Your Integration Tests](<https://devfeed.tech/articles/neon-testing-a-vitest-library-for-your-integration-tests-5682.md>)

Original publisher: [Read original article](<https://neon.com/blog/neon-testing-a-vitest-library-for-your-integration-tests>)

Author: Mikael Lirbank

Published: 2025-09-09T18:20:19Z

Content type: article

Language: en

Sources: [Blog -- Neon Docs](<https://devfeed.tech/sources/blog-neon-docs.md>)

Topics: [Testing](<https://devfeed.tech/topics/testing.md>), [Databases](<https://devfeed.tech/topics/databases.md>), [Library](<https://devfeed.tech/topics/library.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>), [Utility Software](<https://devfeed.tech/topics/utility.md>), [Transactions](<https://devfeed.tech/topics/transactions.md>)

Tags: [community](<https://devfeed.tech/tags/community.md>), [database](<https://devfeed.tech/tags/database.md>), [library](<https://devfeed.tech/tags/library.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [parallel](<https://devfeed.tech/tags/parallel.md>), [postgres](<https://devfeed.tech/tags/postgres.md>), [testing](<https://devfeed.tech/tags/testing.md>), [tests](<https://devfeed.tech/tags/tests.md>), [transactions](<https://devfeed.tech/tags/transactions.md>)

## AI overview

This article introduces Neon Testing, an open-source Vitest utility that automates Neon database branch lifecycles for integration tests. It gives each test file an isolated Postgres branch with the production schema and constraints intact, enabling realistic testing of behaviors such as unique constraints and transaction handling.

## Source excerpt

You can mock database calls all day long, but when your code hits production, the real database doesn't lie. Unique constraints fail, transactions don't roll back as they should, and subtle behaviors that mocks can't reproduce, causing bad code to go into production. Running inte...