Hello everyone!
The Terraform team is pleased to present an extension to the Terraform Test framework: provider mocking. This is in the most recent alpha release, so it not ready for production.
You can download it via the releases website (see CHANGELOG).
The documentation is still in progress, but an early draft can be found here.
Please respond to this topic with any feedback or questions! Potential bugs can also be filed within our Github Issues.
Thanks!