assertEquals("Malformed kerberos ticket", exception.getMessage(), "PAC exception should indicate malformed ticket.");
        } else if (exception instanceof NullPointerException) {
            // Empty input causes null ASN1 object, which is expected behavior
            assertTrue(exception.getMessage() == null || exception.getMessage().contains("Cannot invoke \"Object.getClass()\""),

            fail("Expected IOException");
        } catch (IOException e) {
            assertEquals("Test IOException", e.getMessage());
        } catch (ServletException e) {
            fail("Unexpected ServletException: " + e.getMessage());
        }
    }

    // Test doFilter when WebApiManager.process throws ServletException
    public void test_doFilter_withServletException() {

  }

  public Set<Feature<?>> getConflicts() {
    return conflicts;
  }

  public Object getSource() {
    return source;
  }

  @Override
  public String getMessage() {
    return super.getMessage() + " (source: " + source + ")";
  }

  @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;

        });
        assertTrue(e.getMessage().contains("PAC"));
    }

    // Test exception for short PAC
    @Test
    void testConstructorShortPac() {
        byte[] shortToken = new byte[7];
        PACDecodingException e = assertThrows(PACDecodingException.class, () -> {
            new KerberosPacAuthData(shortToken, keys);
        });
        assertTrue(e.getMessage().contains("PAC"));
    }

        SmbUnsupportedOperationException ex =
                assertThrows(SmbUnsupportedOperationException.class, () -> auth.createContext(tc, null, "SERVER", new byte[0], false));
        assertTrue(ex.getMessage().contains("Cannot use netbios/short names"));
    }

    @Test
    @DisplayName("createContext: no Kerberos in initial token and no fallback -> throws")

        assertEquals("Runtime error", runtimeEx.getMessage());

        // Test Exception
        Exception generalEx = new Exception("General error");
        assertEquals("General error", generalEx.getMessage());

        // Test with null message
        RuntimeException nullMessageEx = new RuntimeException();
        assertNull(nullMessageEx.getMessage());

        // Test with empty message

                log.debug("Error closing connection: {}", e.getMessage());
            }
        });
        connections.clear();

        nonPooledConnections.forEach(conn -> {
            try {
                conn.disconnect(true, true);
            } catch (Exception e) {
                log.debug("Error closing non-pooled connection: {}", e.getMessage());
            }
        });

        final Supplier<String> stacktraceString = () -> {
            final StringBuilder sb = new StringBuilder();
            if (StringUtil.isBlank(cause.getMessage())) {
                sb.append(cause.getClass().getName());
            } else {
                sb.append(cause.getMessage());
            }
            try (final StringWriter sw = new StringWriter(); final PrintWriter pw = new PrintWriter(sw)) {

        final ConverterRuntimeException e = new ConverterRuntimeException("hoge", "xxx", new RuntimeException("cause"));
        System.out.println(e.getMessage());
        assertThat(e.getPropertyName(), is("hoge"));
        assertThat(e.getValue(), is((Object) "xxx"));
        assertThat(e.getCause().getMessage(), is("cause"));
    }

            return CompletableFuture.failedFuture(new IOException("No durable handle available for reconnection: " + path));
        }

        log.debug("Starting reconnection for handle: {} (cause: {})", path, cause.getMessage());
        return attemptReconnect(info, 0, cause);
    }

    /**
     * Attempt to reconnect a specific handle
     * @param handleInfo the handle information