### Question:
PrimitiveLongList implements PrimitiveLongCollection { @Override public int size() { return size; } PrimitiveLongList();   PrimitiveLongList( int size ); void add( long element ); long get( int position ); @Override boolean isEmpty(); @Override void clear(); @Override int size(); @Override void close(); @Override PrimitiveLongIterator iterator(); @Override void visitKeys( PrimitiveLongVisitor<E> visitor ); long[] toArray();  }### Answer:
@Test void newListHasZeroSize() { assertEquals( 0, new PrimitiveLongList().size() ); assertEquals( 0, new PrimitiveLongList( 12 ).size() ); }