Testing only in Localhost can create problem

[Talismanic]

Greetings,
I am an engineer who is interested in infrastructure as code testing. Currently, I am looking for testing anti-patterns in iac test scripts. I noticed Local-only Testing occurring in test instances. This can give happy test results in the local environment but in a real production system test can fail due to the difference in the environment. My recommendation is to test IaC code in an isolated non-local environment which needs to be similar to the production environment.

So I have the following queries:

Do you agree that this is an IaC testing anti-pattern?
Do you want to fix this?

Any feedback is appreciated.

Source Files:
https://github.com/redhat-cop/agnosticd/blob/development/ansible/roles/install-tower/tests/test.yml