import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.inOrder;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

import static org.junit.jupiter.api.Assertions.assertNull;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyBoolean;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import java.io.IOException;

import org.junit.jupiter.api.BeforeEach;

            response.setAsync(true);

            boolean result = response.verifySignature(buffer, 0, 100);

            assertTrue(result);
            verify(mockDigest, never()).verify(any(), anyInt(), anyInt(), anyInt(), any());
        }

        @Test
        @DisplayName("Should skip verification when digest is null")
        void testVerifySignatureNoDigest() {
            byte[] buffer = new byte[100];

        when(smbFile.getUncPath()).thenReturn("\\\\server\\share\\file.txt");
        when(smbFile.isOpen()).thenReturn(true);

        // Mock the open method to do nothing
        doNothing().when(smbFile).open(anyInt(), anyInt(), anyInt(), anyInt());

        smbRandomAccessFile = new SmbRandomAccessFile(smbFile, "rw");
    }

    @Test
    void testConstructor() throws SmbException {
        assertNotNull(smbRandomAccessFile);

        @DisplayName("Should decode buffer correctly")
        void testDecode() throws SMBProtocolDecodingException {
            byte[] buffer = new byte[100];
            when(mockFileSystemInfo.decode(any(byte[].class), anyInt(), anyInt())).thenReturn(24);

            int result = mockFileSystemInfo.decode(buffer, 0, 100);

            assertEquals(24, result);
            verify(mockFileSystemInfo, times(1)).decode(buffer, 0, 100);
        }

        doNothing().when(trans1).close();

        // Return mocked transports
        doReturn(trans1).when(poolSpy).getSmbTransport(eq(ctx), eq(addr1), anyInt(), anyBoolean(), anyBoolean());
        doReturn(trans2).when(poolSpy).getSmbTransport(eq(ctx), eq(addr2), anyInt(), anyBoolean(), anyBoolean());

        // When: Get transport by name
        SmbTransportImpl result = poolSpy.getSmbTransport(ctx, "test.server", 445, false, false);

        lenient().when(handle.getBinding()).thenReturn(mockDcerpcBinding);
        lenient().doCallRealMethod().when(handle).doSendReceiveFragment(any(byte[].class), anyInt(), anyInt(), any(byte[].class));
        lenient().doCallRealMethod().when(handle).doSendFragment(any(byte[].class), anyInt(), anyInt());
        lenient().doCallRealMethod().when(handle).doReceiveFragment(any(byte[].class));
        lenient().doCallRealMethod().when(handle).close();

            // Simulate different encode return values
            when(mockChunk1.encode(any(byte[].class), anyInt())).thenReturn(20);
            when(mockChunk2.encode(any(byte[].class), anyInt())).thenReturn(24);
            when(mockChunk3.encode(any(byte[].class), anyInt())).thenReturn(22);

            SrvCopychunkCopy copy = new SrvCopychunkCopy(sourceKey, mockChunk1, mockChunk2, mockChunk3);

        when(mockTransportPool.getSmbTransport(any(), anyString(), anyInt(), anyBoolean(), anyBoolean())).thenReturn(mockTransport);
        when(mockTransport.unwrap(any())).thenReturn(mockTransport);
        when(mockTransport.getDfsReferrals(any(), anyString(), anyString(), anyString(), anyInt())).thenReturn(null);
        assertNull(dfsResolver.getDc(mockContext, "anyDomain"));
    }

        verify(mockDeferredNdrBuffer, times(9)).enc_ndr_long(anyInt()); // 3 enc_ndr_long for each of 3 unicode strings
        verify(mockDeferredNdrBuffer, times(3)).enc_ndr_long(0);
        verify(mockDeferredNdrBuffer, times(3)).advance(anyInt());
        verify(mockDeferredNdrBuffer, times(4)).derive(anyInt()); // 3 for strings + 1 for guid