when(tree.isConnected()).thenReturn(true);
        setTree(c, tree);
        assertTrue(c.isConnected());
    }

    @Test
    @DisplayName("getTreeId returns -1 when no tree")
    void getTreeId_noTree() {
        SmbTreeConnection c = newConn();
        assertEquals(-1, c.getTreeId());
    }

    @Test
    @DisplayName("getTreeType and getConnectedShare delegate to tree")