[test] Add test fixture for producing logging output.
[test] Add test fixture for producing logging output.

rbramwell/forever,jotham/forever,saisai/forever,Jonekee/forever,vcarrera/forever,foreverjs/forever,arnabsinha4u/demo-documentation,JJediny/forever,vcarrera/forever,ContinuumIO/forever,jqk6/forever,kethle/forever,rbramwell/forever,nguyen-tien-mulodo/forever,Jonekee/forever,jqk6/forever,arnabsinha4u/demo-documentation,rakyll/forever,jotham/forever,yyx990803/forever,saisai/forever,ryan321/forever,foreverjs/forever,yyx990803/forever,ryan321/forever,kethle/forever,JJediny/forever,nguyen-tien-mulodo/forever,rakyll/forever,ContinuumIO/forever