### Question:
TppAccountsController implements TppAccountsRestApi { @Override public ResponseEntity<AccountReport> accountReport(String accountId) { return ResponseEntity.ok(accountMapper.toAccountReport(accountMgmtStaffRestClient.getExtendedAccountDetailsById(accountId).getBody())); }  @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 accountReport() { when(accountMgmtStaffRestClient.getExtendedAccountDetailsById(any())).thenReturn(ResponseEntity.ok(getAccountReportTO())); when(accountMapper.toAccountReport(any())).thenReturn(getAccountReport()); ResponseEntity<AccountReport> response = accountsController.accountReport(ACCOUNT_ID); assertThat(response.getStatusCode().is2xxSuccessful()).isTrue(); assertEquals(response.getBody(), getAccountReport()); }