Embedded Databases for Tests

When writing integration tests for Spring Boot applications, especially those interacting with a database, you need a database instance for your tests to run against.

Embedded databases provide a lightweight, in-memory solution that's perfect for this scenario.

Embedded databases offer several key benefits for testing:

• Isolation: Each test run gets a clean, fresh database, preventing side effects.
• Speed: Being in-memory, they are incredibly fast, reducing test execution time.
• Simplicity: No need for external database servers or complex setup.
• Repeatability: Tests are consistent because they always start with the same data state.