assertThrows(LoginException.class, () -> {
            try (MockedConstruction<LoginContext> mocked = Mockito.mockConstruction(LoginContext.class, (mock, context) -> {
                doThrow(new LoginException("Login failed")).when(mock).login();
            })) {
                new KerberosCredentials(LOGIN_CONTEXT_NAME);
            }
        });
    }

    /**
     * Test getKeys method when subject has Kerberos keys.
     *

          }
        }
        else -> return null // Nothing further to try.
      }

    // Already connected. Return it immediately.
    if (plan.isReady) return ConnectResult(plan)

    // Already failed? Return it immediately.
    if (plan is FailedPlan) return plan.result

    // Connect TCP asynchronously.
    tcpConnectsInFlight += plan
    val taskName = "$okHttpName connect ${routePlanner.address.url.redact()}"

                sslContext.init(null, trustManagerFactory.getTrustManagers(), null);
                sslSocketFactory = sslContext.getSocketFactory();
            } catch (final Exception e) {
                logger.warn("Failed to load certificate_authorities: path={}", authorities, e);
            }
        }

        final String[] hosts = split(ResourceUtil.getFesenHttpUrl(), ",")

            Field field = SmbComWrite.class.getDeclaredField(fieldName);
            field.setAccessible(true);
            return field.get(obj);
        } catch (Exception e) {
            throw new RuntimeException("Failed to access field " + fieldName, e);
        }
    }

    /**
     * Test that the constructor initializes all fields correctly
     */
    @Test
    public void testConstructor() {
        // Arrange

   *
   * If the response body was successfully read until the end, this is the headers that followed,
   * or empty headers if there were none that followed.
   *
   * If the response body was closed prematurely or failed with an error, this will be the sentinel
   * value [TRAILERS_RESPONSE_BODY_TRUNCATED]. In that case attempts to read the trailers should not
   * return the value but instead throw an exception.
   */

                        logger.warn("Failed to set originalOutStream.", e);
                    }
                }
                if (originalErrStream != null) {
                    try {
                        System.setErr(originalErrStream);
                    } catch (Exception e) {
                        logger.warn("Failed to set originalErrStream.", e);
                    }
                }

            }

            this.transportContext = new BaseContext(new PropertyConfiguration(p));

        } catch (final CIFSException ex) {
            throw new ServletException("Failed to initialize config", ex);
        }
    }

    @Override
    protected void service(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException {
        Address dc;

                saveInfo(messages -> messages.addSuccessPrintThreadDump(GLOBAL));
            } catch (final Exception e) {
                logger.warn("Failed to print a thread dump.", e);
                throwValidationError(messages -> messages.addErrorsFailedToPrintThreadDump(GLOBAL), this::asListHtml);
            }
        }).orElse(() -> {

 *    from the peer.
 *
 * Web sockets may fail due to HTTP upgrade problems, connectivity problems, or if either peer
 * chooses to short-circuit the graceful shutdown process:
 *
 *  * **Canceled:** the web socket connection failed. Messages that were successfully enqueued by
 *    either peer may not have been transmitted to the other.
 *
 * Note that the state progression is independent for each peer. Arriving at a gracefully-closed

                    fessConfig.getSessionTrackingModesAsSet().stream().map(SessionTrackingMode::valueOf).collect(Collectors.toSet()));
        } catch (final Throwable t) {
            logger.warn("Failed to set SessionTrackingMode.", t);
        }

        split(fessConfig.getQueryFacetQueries(), "\n").of(stream -> stream.map(String::trim).filter(StringUtil::isNotEmpty).forEach(s -> {