@Test
	public void printtest(){

		bookcollectb.print(1316);
		try{
			int count=0;
			ObjectInputStream osib = new ObjectInputStream(new FileInputStream("bookcollectiontest.txt"));///óϾ , Ͼ׳ϴ° ҽ߰
			bookcollectb.setBookCount(osib.readInt());
			for( int i= 0; i< bookcollectb.getBookCount();i++){
				Book ms = (Book)osib.readObject();
				if(ms.ISBN == 1316) //ʴ ISBN(1316) ־ 
					count =1;  
			}
			assertTrue(count == 0);
		} catch (Exception e) {
		}      
	}