Rooms: test suite

### Details

We need to write tests for the rooms lib that can simulate the various test cases.

Will require R&D to determine how to automate

### Tasks
- [ ] Write tests to simulate functionality
- [ ] Add test script to package.json
- [x] Also should do this: [#649](https://github.com/holium/realm/issues/649)

Start by examining the rooms lib and the existing project scripts in package.json to determine how its functionality can be simulated. Define the relevant test cases, add the test command to package.json, and confirm that the suite exercises the intended rooms behavior; review issue #649 for the related context.

Written by the indexing model from the issue text.