### Question:
PermGetAccountsAllowlist implements JsonRpcMethod { @Override public JsonRpcResponse response(final JsonRpcRequestContext requestContext) { if (allowlistController.isPresent()) { return new JsonRpcSuccessResponse( requestContext.getRequest().getId(), allowlistController.get().getAccountAllowlist()); } else { return new JsonRpcErrorResponse( requestContext.getRequest().getId(), JsonRpcError.ACCOUNT_ALLOWLIST_NOT_ENABLED); } } PermGetAccountsAllowlist(
      final Optional<AccountLocalConfigPermissioningController> allowlistController); @Override String getName(); @Override JsonRpcResponse response(final JsonRpcRequestContext requestContext);  }### Answer:
@Test public void shouldReturnExpectedListOfAccountsWhenAllowlistHasBeenSet() { List<String> accountsList = Arrays.asList("0x0", "0x1"); when(accountAllowlist.getAccountAllowlist()).thenReturn(accountsList); JsonRpcResponse expectedResponse = new JsonRpcSuccessResponse(null, accountsList); JsonRpcResponse actualResponse = method.response(request); assertThat(actualResponse).isEqualToComparingFieldByField(expectedResponse); }
@Test public void shouldReturnEmptyListOfAccountsWhenAllowlistHasBeenSetAndIsEmpty() { List<String> emptyAccountsList = new ArrayList<>(); when(accountAllowlist.getAccountAllowlist()).thenReturn(emptyAccountsList); JsonRpcResponse expectedResponse = new JsonRpcSuccessResponse(null, emptyAccountsList); JsonRpcResponse actualResponse = method.response(request); assertThat(actualResponse).isEqualToComparingFieldByField(expectedResponse); }