iterator.close();
        iterator.close(); // Second close should be safe

        // Then: Tree handle should be released only once
        verify(treeHandle, times(1)).release();
    }

    @Test
    @DisplayName("Iterator should handle filter that rejects all entries")
    void testIterator_FilterRejectsAll() throws Exception {

implementation details of one component or specifics of some setup.

However it should not be used for coverage. For instance if you are testing a
piece of functionality that enters different code paths depending on whether
the index has 1 shards or 2+ shards, then we shouldn't just test against an
index with a random number of shards: there should be one test for the 1-shard
case, and another test for the 2+ shards case.

    }

    @Test
    @DisplayName("Should create correct response")
    void testCreateResponse() {
        // When
        Smb2ChangeNotifyResponse response = request.createResponse(mockContext, request);

        // Then
        assertNotNull(response);
        assertTrue(response instanceof Smb2ChangeNotifyResponse);
    }

    @Test
    @DisplayName("Should calculate correct size")
    void testSize() {

    class ConstructorTests {

        @Test
        @DisplayName("Should throw DcerpcException for invalid URL format")
        void testConstructor_InvalidUrl() {
            String invalidUrl = "invalid:server";
            assertThrows(DcerpcException.class, () -> new DcerpcPipeHandle(invalidUrl, mockContext, false),
                    "Should throw DcerpcException for invalid protocol");
        }

        @Test

        assertNotNull(provider, "Auto provider selection should return a provider");
        assertTrue(provider.isAvailable(), "Returned provider should be available");
    }

    @Test
    public void testCreateProviderTcp() {
        RdmaProvider provider = RdmaProviderFactory.createProvider("tcp");
        assertNotNull(provider, "TCP provider should always be available");

    class WireFormatTests {

        @Test
        @DisplayName("Should read parameters wire format")
        void testReadParametersWireFormat() {
            byte[] buffer = new byte[10];
            int result = response.readParametersWireFormat(buffer, 0, 2);
            assertEquals(2, result);
        }

        @Test
        @DisplayName("Should write setup wire format")
        void testWriteSetupWireFormat() {

    }

    @Test
    @DisplayName("Should handle null path")
    void testNullPath() {
        // When creating with null path
        Smb2TreeConnectRequest reqWithNull = new Smb2TreeConnectRequest(mockConfig, null);

        // Then - should not throw during construction
        assertNotNull(reqWithNull);

    }

    @Test
    @DisplayName("Should preserve stack trace")
    void testStackTracePreservation() {
        // When
        RuntimeCIFSException exception = new RuntimeCIFSException("Test exception");

        // Then
        assertNotNull(exception.getStackTrace());
        assertTrue(exception.getStackTrace().length > 0);

        // Should contain this test method in stack trace

            assertNotNull(lock);
        }

        @Test
        @DisplayName("Should create lock with zero offset and length")
        void testConstructorWithZeroValues() {
            lock = new Smb2Lock(0L, 0L, 0);

            assertNotNull(lock);
        }

        @Test
        @DisplayName("Should create lock with maximum values")
        void testConstructorWithMaxValues() {

    }

    @Test
    @DisplayName("Should create Type 1 message with default flags")
    void testType1MessageCreation() {
        // When
        Type1Message type1 = new Type1Message(mockContext);

        // Then
        assertNotNull(type1);
        // Note: getType() method does not exist in Type1Message
        assertTrue(type1.getFlags() != 0); // Should have some flags set
    }

    @Test