@Test
  public void getAddressBook() {
    final List<AddressBook> addressBooks = operation.getAddressBook(filePath);

    assertEquals("There are 5 records in AddressBook", 5, addressBooks.size());
  }
 @Before
 public void setUp() throws Exception {
   filePath = "src/test/resources/AddressBook";
   operation = new AddressBookOperation();
   addressBooks = operation.getAddressBook(filePath);
 }