Test trouble (5)
I believe the answer is:
trial
I believe this clue is a double definition.
'test' is the first definition.
('trial' can be a synonym of 'test')
'trouble' is the second definition.
(trial is a kind of trouble)
(Other definitions for trial that I've seen before include "Judicial examination" , "sessions?" , "Test of suitability" , "Test to determine guilt or innocence" , "Court examination; test" .)