# REL12-BP03: Test functional requirements

## Description

Perform comprehensive functional testing.

## Implementation Guidance

- Write unit tests for all code
- Implement integration tests
- Run end-to-end tests
- Test edge cases
- Automate test execution

## Risk Level

High - Untested code causes production issues.

## Related Best Practices

- [REL12-BP04](REL12-BP04-Test-Scaling-Performance.md)
- [REL08-BP02](../REL08-Change-Change-Management/REL08-BP02-Functional-Testing-Deployment.md)
