Update README.md

README.md

@@ -53,7 +53,7 @@ Links to documentation and other resources required to develop and iterate in th
 
 ### 🔍 Tests
 
-You'll need to be a member of the [platform-contributors](https://groups.google.com/a/osinfra.io/g/platform-contributors) Google Group to run the tests. This group manages access to the resource hierarchy's `Testing/Sandbox` folder. You can request access to this group by opening an issue [here](https://github.com/osinfra-io/google-cloud-hierarchy/issues/new?assignees=&labels=enhancement&projects=&template=add-update-identity-group.yml&title=Add+or+update+identity+group).
+All tests are [mocked](https://developer.hashicorp.com/terraform/language/tests/mocking) allowing us to test the module without creating infrastructure or requiring credentials. The trade-offs are acceptable in favor of speed and simplicity. In a Terraform test, a mocked provider or resource will generate fake data for all computed attributes that would normally be provided by the underlying provider APIs.
 
 ```none
 cd fixtures/default