assertEquals("testpass", config.getDefaultPassword());
        assertEquals("testdomain", config.getDefaultDomain());
    }

    @Test
    @DisplayName("Should handle null properties gracefully")
    void testNullProperties() throws CIFSException {
        // PropertyConfiguration doesn't handle null properties
        // It should throw NullPointerException
        assertThrows(NullPointerException.class, () -> {

                    e.getMessage().contains("Failed to extract") || e.getMessage().contains("No entries could be processed"));
        }
    }

    /**
     * Test that TarExtractor handles invalid archive gracefully.
     * Invalid archives may either throw an exception or return empty content.
     */
    public void test_TarExtractor_invalidArchive_handlesGracefully() {

        urlFilter.init(null);
        // Should handle null session ID gracefully
        assertNotNull(urlFilter);
    }

    /**
     * Test initialization with empty session ID
     */
    public void test_init_withEmptySessionId() {
        urlFilter.init("");
        // Should handle empty session ID gracefully
        assertNotNull(urlFilter);
    }

    /**

            // Should either throw exception or fail gracefully after close
            try {
                digest.sign(data, 0, data.length, request, response);
                // If no exception is thrown, the operation should have been no-op or handled gracefully
                assertTrue(true, "Sign operation after close should either throw exception or handle gracefully");
            } catch (RuntimeException e) {

        final long elapsed = (System.nanoTime() - start) / 1000000;

        assertTrue("file:// URLs should not be delayed", elapsed < 50);
    }

    /**
     * Test that null URL queue is handled gracefully
     */
    public void test_nullUrlQueue() {
        final HostIntervalController controller = new HostIntervalController();
        controller.delayMillisBeforeProcessing = 1000L;

        assertEquals(0x800, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_STREAM_WRITE);
    }

    @Test
    @DisplayName("Should handle null file ID gracefully")
    void testNullFileId() {
        // Given
        byte[] nullFileId = new byte[16]; // All zeros
        Configuration config = mock(Configuration.class);

        assertNotNull(exception);
        assertEquals(message, exception.getMessage());
        assertEquals(cause, exception.getCause());
    }

    @Test
    @DisplayName("Should handle null message gracefully")
    void testNullMessage() {
        // When/Then
        assertDoesNotThrow(() -> {
            RuntimeCIFSException exception = new RuntimeCIFSException((String) null);
            assertNull(exception.getMessage());

        }
    }

    @Nested
    @DisplayName("Edge Cases and Error Handling")
    class EdgeCasesTests {

        @Test
        @DisplayName("Should handle malformed buffer gracefully")
        void testReadDataWireFormatMalformedBuffer() {
            byte[] buffer = new byte[3]; // Too small for valid DFS referral

            assertThrows(ArrayIndexOutOfBoundsException.class, () -> {

        verify(mockDelegate).isIpcSigningEnforced();
        verify(mockDelegate, times(2)).isForceExtendedSecurity();
    }

    @Test
    @DisplayName("Delegation should handle null returns gracefully")
    void testNullReturnHandling() {
        // Given - configure delegate to return nulls
        when(mockDelegate.getRandom()).thenReturn(null);
        when(mockDelegate.getLocalAddr()).thenReturn(null);

        void testNullDataNonZeroLength() {
            request.setData(null, 0, 100);

            byte[] buffer = new byte[256];

            // Should handle gracefully or throw appropriate exception
            assertThrows(NullPointerException.class, () -> request.writeBytesWireFormat(buffer, 0));
        }

        @Test