public void testisEmptyLeaf(int count) throws Exception {

		for (int i = 0; i < 100; i++) {

			RBtree empt = empty();

			if (!empt.isEmpty()) {				
				throw new Exception("FAILURE EMPTY IS NOT EMPTY");
			}
			else {
				int len = (int)(Math.random() * (10 - 1) + 1);
				RBtree tree = randomRB( len );
				if (tree.isEmpty() && count != 0) {
					throw new Exception("FAILURE EMPTY TREE HAS AN OBJECT");
				}
			}
			emptyLeafTest++;
		}
	}