Add Tests

[young-k]

A list of tests we need to have:

• A route request is formatted properly
• Live tracking is up
• Live tracking is returning up-to-date results
• A route request always returns a walking route
• We show buses that leave at the current time
• We show buses that are delayed past the current time
• We show buses that are delayed at the current time
• If delay is less than 2 minutes, we don't show delay
• If delay is less than 2 minutes but delayed past the current time, we display the delay
• We show buses that are after the current time (a bus that leaves 30 minutes afterwards)
• Our app functions without live tracking working
• Our app returns a response if graphhopper does not return, rather than hanging
• We return a list of stops
• The stops request does not hang, even if the python microservice is down