assertTrue(transport.isDisconnected());
        assertTrue(transport.isFailed());
    }

    @Test
    @DisplayName("capability query delegates to negotiation state")
    void hasCapability_delegates() throws Exception {
        // Arrange
        SmbNegotiationResponse nego = mock(SmbNegotiationResponse.class);
        setField(transport, "negotiated", nego);

        // Assert & interaction verify
        verify(treeConnection).ensureDFSResolved(resourceLoc);
    }

    @Test
    @DisplayName("hasCapability delegates and propagates exceptions")
    void hasCapabilityDelegates() throws Exception {
        // Happy path delegates; invalid case propagates SmbException
        when(treeConnection.hasCapability(123)).thenReturn(true);
        assertTrue(handle.hasCapability(123));