### Question:
TppAccountsController implements TppAccountsRestApi { @Override public ResponseEntity<Void> createAccount(String userId, DepositAccount account) { return accountMgmtStaffRestClient.createDepositAccountForUser(userId, accountMapper.toAccountDetailsTO(account)); }  @Override ResponseEntity<Void> createAccount(String userId, DepositAccount account); @Override ResponseEntity<Void> updateAccountAccess(AccountAccess accountAccess); @Override ResponseEntity<List<AccountDetailsTO>> getAllAccounts(); @Override ResponseEntity<CustomPageImpl<AccountDetailsTO>> getAllAccounts(String queryParam, int page, int size); @Override ResponseEntity<AccountDetailsTO> getAccountDetailsByIban(String iban); @Override ResponseEntity<AccountDetailsTO> getSingleAccount(String accountId); @Override ResponseEntity<AccountReport> accountReport(String accountId); @Override ResponseEntity<Void> depositCash(String accountId, AmountTO amount); @Override ResponseEntity<Resource> downloadAccountTemplate(); @Override ResponseEntity<Boolean> changeStatus(String accountId);  }### Answer:
@Test void createAccount() { when(accountMapper.toAccountDetailsTO(any())).thenReturn(getAccountDetailsTO()); when(accountMgmtStaffRestClient.createDepositAccountForUser(any(), any())).thenAnswer(i -> ResponseEntity.ok().build()); ResponseEntity<Void> response = accountsController.createAccount(USER_ID, getDepositAccount()); assertThat(response.getStatusCode().is2xxSuccessful()).isTrue(); verify(accountMapper, times(1)).toAccountDetailsTO(getDepositAccount()); }