RonDon,
Interesting! Thanks for the information. Here's what the web page maintained by the Rhode Island Department of Health says:

"If you are planning to travel to a state that requires a COVID-19 test in order to avoid extended quarantine, you are now able to schedule a test through portal.ri.gov. Testing will take place at the Rhode Island Convention Center parking garage, located at 114 West Exchange St. in Providence. Individuals will receive their results within 24-48 hours."

Here is the link to that web page:
https://health.ri.gov/covid/testing/