def test_port_channel_is_not_automatically_created_when_adding_a_port_to_it_if_its_already_created(self, t):
        enable(t)

        create_port_channel_interface(t, '14')

        t.write("configure terminal")
        t.readln("Enter configuration commands, one per line.  End with CNTL/Z.")
        t.read("my_switch(config)#")
        t.write("interface FastEthernet0/1")
        t.read("my_switch(config-if)#")
        t.write("channel-group 14 mode active")
        t.read("my_switch(config-if)#")
        t.write("exit")
        t.read("my_switch(config)#")
        t.write("exit")
        t.read("my_switch#")

        assert_interface_configuration(t, "fa0/1", [
            "interface FastEthernet0/1",
            " channel-group 14 mode active",
            "end"
        ])

        configuring_interface(t, interface="fa0/1", do="no channel-group 14 mode on")

        assert_interface_configuration(t, "fa0/1", [
            "interface FastEthernet0/1",
            "end"
        ])

        configuring(t, do="no interface port-channel 14")