### Question:
LibraAccountService { public LibraBalance getBalance(String libraAddress) { LibraBalance libraBalance = new LibraBalance(); Long balance = jLibraUtil.findBalance(libraAddress); libraBalance.setLibra(balance/1000000); libraBalance.setLibraMicro(balance); libraBalance.setLibraAddress(libraAddress); log.info(libraBalance.toString()); return libraBalance; } LibraAccountService(); Account createAccountFromMnemonic(String mnemonic, int child); LibraAccount findAccount(Long userId); LibraBalance getBalance(String libraAddress); Account createLibraUserAccount(User user); String transferToMember(Long senderUserId, TransferRequest transferRequest); Long mint(String address, Long amount);  }### Answer:
@Test public void getBalanceTest() { LibraAccount account = libraAccountService.findAccount(1L); LibraBalance balance = libraAccountService.getBalance(account.getLibraAddressToString()); Assert.assertTrue(balance.getLibra() > 0); }