java.io.IOException ex = assertThrows(java.io.IOException.class, () -> transport.ensureConnected());
        assertTrue(ex.getMessage().contains("connect"));
        verify(transport).ensureConnected();
    }

    // Happy path: getDfsReferrals returns referral, verify arguments captured
    @Test
    @DisplayName("getDfsReferrals returns data and receives correct args")
    void getDfsReferrals_happy() throws Exception {

        InOrder inOrder = inOrder(handle, fd, tree);
        inOrder.verify(handle, times(1)).ensureOpen();
        inOrder.verify(fd, times(1)).getTree();
        inOrder.verify(tree, times(1)).send(any(Smb2IoctlRequest.class), eq(RequestParam.NO_RETRY));
        verify(fd, times(1)).close();
        verify(tree, times(1)).close();
    }

    @ParameterizedTest

    void testDcerpcFaultInvalidTag() {
        assertEquals(0x1C000006, DcerpcError.DCERPC_FAULT_INVALID_TAG);
    }

    @Test
    @DisplayName("Should verify DCERPC_FAULT_CONTEXT_MISMATCH constant value")
    void testDcerpcFaultContextMismatch() {
        assertEquals(0x1C00001A, DcerpcError.DCERPC_FAULT_CONTEXT_MISMATCH);
    }

    @Test

            // Verify with second digest (simulating server verification)
            boolean isValid = digest2.verify(data, 0, data.length, 0, response);

            assertTrue(isValid, "Valid signature should verify correctly");
        }

        @Test
        @DisplayName("Should sign and verify round trip for SMB 2.1")

    void connectLogon_invocation_isForwarded() throws Exception {
        // Act
        tree.connectLogon(context);

        // Assert - verify interaction with dependency
        verify(tree, times(1)).connectLogon(context);
        verify(tree, never()).close();
    }

    @Test
    @DisplayName("connectLogon accepts null context but still invokes")

        verify(smbFileHandle, times(1)).getTree();
    }

    /**
     * Test isValid() when the handle is valid.
     */
    @Test
    void testIsValid_whenValid() {
        when(smbFileHandle.isValid()).thenReturn(true);
        assertTrue(smbFileHandle.isValid(), "isValid should return true when the handle is valid.");
        verify(smbFileHandle, times(1)).isValid();
    }

    /**

        int encodedLength = request.encode(buffer, 0);

        // Verify encoded length matches size
        assertEquals(request.size(), encodedLength);

        // Verify capabilities (4 bytes)
        assertEquals(DEFAULT_CAPABILITIES, SMBUtil.readInt4(buffer, 0));

        // Verify client GUID (16 bytes)
        byte[] extractedGuid = new byte[16];

            inOrder.verify(mockCtx).isPreferredMech(any());
            inOrder.verify(mockCtx).getFlags();
            inOrder.verify(mockCtx).getSupportedMechs();
            inOrder.verify(mockCtx).supportsIntegrity();
            inOrder.verify(mockCtx).calculateMIC(any(byte[].class));
            inOrder.verify(mockCtx).verifyMIC(any(byte[].class), any(byte[].class));
            inOrder.verify(mockCtx).isMICAvailable();

package jcifs;

import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;

/**
 * Test class for DfsReferralData interface functionality
 */

        UpgradeContext context = createMockContext();

        help.execute(context);

        // Verify that logger.info was called multiple times
        // We can't easily verify the exact content without capturing the logger output,
        // but we can verify that the method executes without errors
        Mockito.verify(context.logger, Mockito.atLeastOnce()).info(Mockito.anyString());
    }

    @Test