I've added a similar safety to every project. It's not perfect, but this last line of defense has saved team members from themselves more than once.

For Django projects, add the below to manage.py:

    env_name = os.environ.get("ENVIRONMENT", "ENVIRONMENT_NOT_SET")
    if env_name in TEST_PROTECTED_ENVIRONMENTS and "test" in sys.argv:
        raise Exception(f"You cannot run tests with ENVIRONMENT={env_name}")