The openstack.go module has ok coverage. While many CRUD operations are tested, some functions remain untested: OpenstackAuth() (authentication/client initialization), WaitForVolumeStatus(), and WaitForServerStatus() (state polling with retry logic).

Can be used HTTP mocks via gophercloud/testhelper or httptest.NewServer() to simulate OpenStack API responses.

What needs to be tested:

• OpenstackAuth(): valid credentials, invalid credentials, missing env vars
• WaitForVolumeStatus(): success path, timeout, API errors
• WaitForServerStatus(): success path, timeout, error handling