verify(tree, times(1)).getSession();
        verify(session, times(1)).getSessionKey();
    }

    @Test
    @DisplayName("sendrecv SMB2 path issues IOCTL and returns response length")
    void testSendRecvSmb2() throws IOException, CIFSException {
        when(pipe.ensureTreeConnected()).thenReturn(tree);
        when(tree.acquire()).thenReturn(tree);

        // ensureOpen path