Assert we get a non-empty response
Return foo
Server should return one of rock, paper, scissors
Return rock
Return random element from rock, paper, scissors
Allow running server on a different port
Refactor tests to pass in server port
A mediator should print a string
Mediator prints foo
Mediator should retrieve a play for player 1
Mediator.getPlay returns foo
mediator should retrieve a play for player 1

which is one of rock, paper, scissors
getPlay queries the server for a play for player 1