final ConstructorDesc ctor = beanDesc.getConstructorDesc();
        assertThat(ctor, is(notNullValue()));
        assertThat(ctor.getBeanDesc(), is(sameInstance(beanDesc)));
        assertThat(ctor.getConstructor(), is((Constructor) MyBean.class.getConstructor()));
        assertThat(ctor.getParameterTypes().length, is(0));
        assertThat(ctor.isPublic(), is(true));

    @Test
    @DisplayName("Default ctor: null message/cause and success status")
    void defaultConstructor_hasNullMessageAndCause_andDefaultStatus() {
        // Arrange & Act
        SMBSignatureValidationException ex = new SMBSignatureValidationException();

        // Assert
        assertNull(ex.getMessage(), "Default ctor should not set a message");
        assertNull(ex.getCause(), "Default ctor should not set a cause");

                Arguments.of(0x00001234, NtStatus.NT_STATUS_UNSUCCESSFUL));
    }

    @ParameterizedTest
    @MethodSource("intErrorCodes")
    @DisplayName("int ctor: sets message and NT status as expected")
    void intConstructor_populatesMessageAndStatus(int errCode, int expectedStatus) {
        // Arrange & Act: create exception with error code

        SmbException ex = new SmbException(0, false);
        assertEquals("NT_STATUS_SUCCESS", ex.getMessage());
        assertEquals(0, ex.getNtStatus());
        assertNull(ex.getRootCause(), "root cause should be null for this ctor");
        assertEquals("jcifs.smb1.smb1.SmbException: NT_STATUS_SUCCESS", ex.toString());
    }

    /**
     * Edge case – constructor using the winerr flag.
     */
    @Test

     */
    static Stream<Arguments> messages() {
        return Stream.of(Arguments.of((String) null), Arguments.of(""), Arguments.of("unexpected downgrade"));
    }

    @Test
    @DisplayName("Default ctor: null message/cause; toString is class name; type hierarchy")
    void defaultConstructor_hasNullMessageAndCause_andTypeHierarchy() {
        // Arrange & Act

         * we must create an array of objects that do.
         */
        final srvsvc.ShareInfoCtr1 ctr = (srvsvc.ShareInfoCtr1) this.info;
        final MsrpcShareInfo1[] entries = new MsrpcShareInfo1[ctr.count];
        for (int i = 0; i < ctr.count; i++) {
            entries[i] = new MsrpcShareInfo1(ctr.array[i]);
        }
        return entries;
    }

         * we must create an array of objects that do.
         */
        final srvsvc.ShareInfoCtr1 ctr = (srvsvc.ShareInfoCtr1) info;
        final MsrpcShareInfo1[] entries = new MsrpcShareInfo1[ctr.count];
        for (int i = 0; i < ctr.count; i++) {
            entries[i] = new MsrpcShareInfo1(ctr.array[i]);
        }
        return entries;
    }