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

        configuring_interface(t, "FastEthernet0/2", do="switchport trunk native vlan 555")

        assert_interface_configuration(t, "Fa0/2", [
            "interface FastEthernet0/2",
            " switchport trunk native vlan 555",
            "end"])

        configuring_interface(t, "FastEthernet0/2", do="no switchport trunk native vlan")

        assert_interface_configuration(t, "Fa0/2", [
            "interface FastEthernet0/2",
            "end"])