mocha with nodejs assert hangs / timeouts für assert (false) anstelle von error

Ich habe diese Art von Mokka-Test: describe 'sabah', → beforeEach → @sabahStrategy = _.filter(@strats, { name: 'sabah2' })[0] .strat it 'article list should be populated', (done) → @timeout 10000 strat = new @sabahStrategy() articles = ...