* {@code IOException#toString()}.
     */
    @Test
    @DisplayName("toString without root cause matches IOException#toString")
    void testToStringWithoutRootCause() {
        SmbException ex = new SmbException(0, false);
        assertEquals("jcifs.smb1.smb1.SmbException: NT_STATUS_SUCCESS", ex.toString());
    }

        }
    }

    @Nested
    @DisplayName("ToString Tests")
    class ToStringTests {

        @Test
        @DisplayName("Should return simple string when no root cause")
        void testToStringWithoutRootCause() {
            String message = "Test exception message";
            TransportException exception = new TransportException(message);

            String result = exception.toString();