test(interfaces): Test completion of veth peers

Follow up to scop#1393
Depends on scop#1394

Author: yedayak

test/fixtures/shared/bin/ifconfig

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-# Dummy "ifconfig -a" emulator
+# Dummy "ifconfig -a" emulator, from net-tools 1.60, ifconfig 1.42 (2001-04-13)
 
 cat <<EOF
 eth0      Link encap:Ethernet  HWaddr 33:33:33:33:33:33
@@ -21,4 +21,21 @@ lo        Link encap:Local Loopback
           TX packets:129059 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0 
           RX bytes:7456154 (7.1 MiB)  TX bytes:7456154 (7.1 MiB)
+
+peer1     Link encap:Ethernet  HWaddr 33:33:33:33:33:33
+          inet6 addr: fe80::000:0000:0000:0000/64 Scope:Link
+          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
+          RX packets:15 errors:0 dropped:0 overruns:0 frame:0
+          TX packets:15 errors:0 dropped:0 overruns:0 carrier:0
+          collisions:0 txqueuelen:1000
+          RX bytes:1146 (1.1 Kb)  TX bytes:1146 (1.1 Kb)
+
+peer2     Link encap:Ethernet  HWaddr 33:33:33:33:33:33
+          inet6 addr: fe80::000:0000:0000:0000/64 Scope:Link
+          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
+          RX packets:15 errors:0 dropped:0 overruns:0 frame:0
+          TX packets:15 errors:0 dropped:0 overruns:0 carrier:0
+          collisions:0 txqueuelen:1000
+          RX bytes:1146 (1.1 Kb)  TX bytes:1146 (1.1 Kb)
+
 EOF

test/fixtures/shared/bin/ip

@@ -10,6 +10,10 @@ for arg in "$@"; do
     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default 
     link/ether 33:33:33:33:33:33 brd ff:ff:ff:ff:ff:ff link-netnsid 0
+5: peer2@peer1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
+    link/ether 33:33:33:33:33:33 brd ff:ff:ff:ff:ff:ff
+6: peer1@peer2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
+    link/ether 33:33:33:33:33:33 brd ff:ff:ff:ff:ff:ff
 EOF
             exit 0
             ;;
@@ -27,6 +31,14 @@ EOF
        valid_lft forever preferred_lft forever
     inet6 fe80::000:0000:0000:0000/64 scope link 
        valid_lft forever preferred_lft forever
+5: peer2@peer1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
+    link/ether 33:33:33:33:33:33 brd ff:ff:ff:ff:ff:ff
+    inet6 fe80::000:0000:0000:0000/64 scope link
+       valid_lft forever preferred_lft forever
+6: peer1@peer2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
+    link/ether 33:33:33:33:33:33 brd ff:ff:ff:ff:ff:ff
+    inet6 fe80::000:0000:0000:0000/64 scope link
+       valid_lft forever preferred_lft forever
 EOF
             exit 0
             ;;

test/t/unit/test_unit_compgen_available_interfaces.py

@@ -42,4 +42,7 @@ def test_2_correct_interfaces(self, bash, functions, remove_one_tool):
                 "_comp__test_compgen available_interfaces",
                 want_output=True,
             )
-            assert all(iface in output for iface in ["<eth0>", "<lo>"])
+            assert all(
+                iface in output
+                for iface in ["<eth0>", "<lo>", "<peer1>", "<peer2>"]
+            )