# Testing NetworkMonitor functionality

> These instructions are only for Linux and macOS.

Run the network-monitor integration test binary, e.g.:

```sh
# sudo not required
./build/tests/integration/network-monitor
```

You should see an `onInterfaceAdded` message for each ethernet and loopback
network interface present on the system, followed by an `onAddressAdded`
message for each IPv4/IPv6 address on each interface. Finally,
`onEnumerationCompleted` is printed, along with a summary of all interfaces
discovered thus far.

## Linux

The following commands assume `eth0` is the name of an ethernet interface
on the machine. If your interfaces are named differently, replace `eth0`
with the name of any ethernet interface that you have available.

Command | Expected output
--------|----------------
sudo ip link add link eth0 name nmtest0 type vlan id 42 | `nmtest0: onInterfaceAdded`
sudo ip link set dev nmtest0 mtu 1342 | `nmtest0: onMtuChanged <old_mtu> -> 1342` (`old_mtu` is most likely 1500)
sudo ip link set dev nmtest0 up | `nmtest0: onStateChanged down -> <new_state>` (`new_state` is one of: running, dormant, no-carrier)
sudo ip address add 198.51.100.100/24 dev nmtest0 | `nmtest0: onAddressAdded 198.51.100.100/24`
sudo ip address del 198.51.100.100/24 dev nmtest0 | `nmtest0: onAddressRemoved 198.51.100.100/24`
sudo ip address add 2001:db8::1/80 dev nmtest0 | `nmtest0: onAddressAdded 2001:db8::1/80`
sudo ip address del 2001:db8::1/80 dev nmtest0 | `nmtest0: onAddressRemoved 2001:db8::1/80`
sudo ip link delete dev nmtest0 | `nmtest0: onInterfaceRemoved`

If you unplug the ethernet cable from your network card, you should see:

```
eth0: onStateChanged running -> no-carrier
nmtest0: onStateChanged running -> no-carrier
```

Plugging the cable back in should produce the following messages:

```
eth0: onStateChanged no-carrier -> running
nmtest0: onStateChanged no-carrier -> running
```

## macOS

The following commands assume `en0` is the name of an ethernet interface
on the machine. If your interfaces are named differently, replace `en0`
with the name of any ethernet interface that you have available.

Command | Expected output
--------|----------------
sudo ifconfig vlan1 create | `vlan1: onInterfaceAdded`
sudo ifconfig vlan1 vlan 1 vlandev en0 | `vlan1: onStateChanged down -> running`
sudo ifconfig vlan1 198.51.100.100/24 | `vlan1: onAddressAdded 198.51.100.100/24`
sudo ifconfig vlan1 198.51.100.100/24 remove | `vlan1: onAddressRemoved 198.51.100.100/24`
sudo ifconfig vlan1 inet6 2001:db8::1/80 | `vlan1: onAddressAdded 2001:db8::1/80` (and potentially link-local addresses)
sudo ifconfig vlan1 inet6 2001:db8::1/80 remove | `vlan1: onAddressRemoved 2001:db8::1/80`
sudo ifconfig vlan1 destroy | `vlan1: onInterfaceRemoved`

If you unplug the ethernet cable from your network card, you should see:

```
en6: onStateChanged running -> down
```

Plugging the cable back in should produce the following messages:

```
en6: onStateChanged down -> running
```