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DevOps & Automation · Foundational

Integration Test

An automated test that verifies multiple components or services work together correctly.

Definition

Integration tests exercise real interactions such as API calls to a database or message queue, often in containers or ephemeral environments. They are slower than unit tests but catch interface mismatches.

Example

A test spins up PostgreSQL in Docker and verifies the repository class persists orders.

Exam tip

Integration tests sit in the middle of the test pyramid.

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