### Question:
PrimitiveLongArrayQueue implements PrimitiveLongCollection { @Override public boolean isEmpty() { return head == tail; } PrimitiveLongArrayQueue();   PrimitiveLongArrayQueue( int capacity ); @Override void visitKeys( PrimitiveLongVisitor<E> visitor ); @Override boolean isEmpty(); @Override void clear(); @Override int size(); @Override void close(); @Override PrimitiveLongIterator iterator(); long dequeue(); void enqueue( long value ); void addAll( PrimitiveLongArrayQueue otherQueue );  }### Answer:
@Test void newQueueIsEmpty() { assertTrue( createQueue().isEmpty() ); }