# Testing and Integration
source: https://developer.mastercard.com/open-finance-data/documentation/testing-and-integration/index.md

This section provides the tools and resources to help you test and integrate
with the Mastercard Open Finance Data API.

* Refer to [Testing](https://developer.mastercard.com/open-finance-data/documentation/testing-and-integration/testing/index.md) to set up the Sandbox environment and run scenarios with our test providers and test users.
* Refer to [Postman Collections](https://developer.mastercard.com/open-finance-data/documentation/testing-and-integration/postman-collections/index.md) to explore the API using Postman.
* Refer to [Reference Implementation](https://developer.mastercard.com/open-finance-data/documentation/testing-and-integration/reference-application/index.md) to download a sample application that demonstrates the Account Opening flow.