Async tests run in parallel

[realyze]

I can see in my logs that a beforeEach block is run while another (asynchronous) one is still in progress.

I20150612-08:51:20.392(10)? before each
I20150612-08:51:20.393(10)? ==> onCreateUser
I20150612-08:51:20.399(10)? [velocity] Established connection with Velocity.
I20150612-08:51:20.402(10)? before each done
I20150612-08:51:20.403(10)? before each 2
I20150612-08:51:20.411(10)? Running mocha server tests
I20150612-08:51:20.451(10)? before each

"before each 2" line means a nested beforeEach (in a describe block) started executing. I would expect there to be a before each 2 done log line before seeing another "before each".

This causes trouble with sinon spies (as they are being re-wrapped when the other beforeEach starts executing which makes sinon throw an exception).