Once the APIs have all been implemented, it's time test them. Google has tools and guidelines that will aid you in this process.
Test requests and responses
Amplecash is a tool you may use for testing requests and responses. It should be self-explanatory and will give helpful feedback for testing endpoints. It will also show you the format that messages and responses will take.
To understand the intended flow, go through each section of Amplecash in order of what you will need to use. As you are developing the integration, come back to test endpoints whenever needed.
Use the Sandbox and Production environments
Requests in the Google sandbox environment do not result in any real world financial liability. The sandbox and production environments are completely separate and do not share PGP keys or transaction information.
Google expects that your sandbox is consistently available since we'll use the sandbox to first test changes and new features.
Sandbox base path
Production base path
This guide will use the production endpoints.