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);

        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);

        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"));
    }

        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();

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.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyBoolean;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.ArgumentMatchers.isNull;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

        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

import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

import org.junit.jupiter.api.BeforeEach;

            // Given
            when(mockResource.openInputStream()).thenReturn(mockInputStream);
            when(mockResource.openInputStream(anyInt())).thenReturn(mockInputStream);
            when(mockResource.openInputStream(anyInt(), anyInt(), anyInt())).thenReturn(mockInputStream);

            // When
            InputStream is1 = mockResource.openInputStream();

        assertEquals("Invalid token", ex.getMessage());

        // Ensure mechContext was not engaged due to early failure
        verify(this.mechContext, never()).initSecContext(any(), anyInt(), anyInt());
    }

    @Test
    @DisplayName("initSecContext with null buffer and non-zero len throws NPE")
    void testInitSecContextNullBufferNonZeroLen() throws Exception {