/**
* Tracks the occurence of certain events in a test environment. Threads in a
* test environment tell the event tracker of the occurrence of certain events
* using {@link #eventOccurred(Event)}. Test code inspects the events sent by a
* thread using {@link #isEventSent(Thread, Event)}.
/**
* Tracks the occurence of certain events in a test environment. Threads in a
* test environment tell the event tracker of the occurrence of certain events
* using {@link #eventOccurred(Event)}. Test code inspects the events sent by a
* thread using {@link #isEventSent(Thread, Event)}.