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gateway_test.go
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package gateway
import (
"net"
"testing"
)
type testcase struct {
output []byte
ok bool
gateway string
}
func TestParseWindowsRoutePrint(t *testing.T) {
correctData := []byte(`
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.88.88.2 10.88.88.149 10
===========================================================================
Persistent Routes:
`)
randomData := []byte(`
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna
aliqua. Ut enim ad minim veniam, quis nostrud exercitation
`)
noRoute := []byte(`
IPv4 Route Table
===========================================================================
Active Routes:
`)
badRoute1 := []byte(`
IPv4 Route Table
===========================================================================
Active Routes:
===========================================================================
Persistent Routes:
`)
badRoute2 := []byte(`
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 foo 10.88.88.149 10
===========================================================================
Persistent Routes:
`)
testcases := []testcase{
{correctData, true, "10.88.88.2"},
{randomData, false, ""},
{noRoute, false, ""},
{badRoute1, false, ""},
{badRoute2, false, ""},
}
test(t, testcases, parseWindowsRoutePrint)
}
func TestParseLinuxIPRouteShow(t *testing.T) {
correctData := []byte(`
default via 192.168.178.1 dev wlp3s0 metric 303
192.168.178.0/24 dev wlp3s0 proto kernel scope link src 192.168.178.76 metric 303
`)
randomData := []byte(`
test
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna
aliqua. Ut enim ad minim veniam, quis nostrud exercitation
`)
noRoute := []byte(`
192.168.178.0/24 dev wlp3s0 proto kernel scope link src 192.168.178.76 metric 303
`)
badRoute := []byte(`
default via foo dev wlp3s0 metric 303
192.168.178.0/24 dev wlp3s0 proto kernel scope link src 192.168.178.76 metric 303
`)
testcases := []testcase{
{correctData, true, "192.168.178.1"},
{randomData, false, ""},
{noRoute, false, ""},
{badRoute, false, ""},
}
test(t, testcases, parseLinuxIPRouteShow)
}
func TestParseLinuxIPRouteGet(t *testing.T) {
correctData := []byte(`
8.8.8.8 via 10.0.1.1 dev eth0 src 10.0.1.36 uid 2000
cache`)
randomData := []byte(`
test
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna
aliqua. Ut enim ad minim veniam, quis nostrud exercitation
`)
noRoute := []byte(`
broadcast 255.255.255.255 dev eth0 src 10.0.1.36 uid 2000
cache <local,brd>
`)
badRoute := []byte(`
local 0.0.0.0 dev lo src 127.0.0.1 uid 2000
cache <local>
`)
errorRoute := []byte(`
RTNETLINK answers: Invalid argument
`)
testcases := []testcase{
{correctData, true, "10.0.1.1"},
{randomData, false, ""},
{noRoute, false, ""},
{badRoute, false, ""},
{errorRoute, false, ""},
}
test(t, testcases, parseLinuxIPRouteGet)
}
func TestParseLinuxRoutePrint(t *testing.T) {
correctData := []byte(`
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
`)
randomData := []byte(`
test
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna
aliqua. Ut enim ad minim veniam, quis nostrud exercitation
`)
noRoute := []byte(`
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
`)
badRoute := []byte(`
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 foo 0.0.0.0 UG 0 0 0 eth0
`)
missingRoute := []byte(`
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.0.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
`)
testcases := []testcase{
{correctData, true, "192.168.1.1"},
{randomData, false, ""},
{noRoute, false, ""},
{badRoute, false, ""},
{missingRoute, false, ""},
}
test(t, testcases, parseLinuxRoute)
}
func TestParseDarwinRouteGet(t *testing.T) {
correctData := []byte(`
route to: 0.0.0.0
destination: default
mask: default
gateway: 172.16.32.1
interface: en0
flags: <UP,GATEWAY,DONE,STATIC,PRCLONING>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire
0 0 0 0 0 0 1500 0
`)
randomData := []byte(`
test
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna
aliqua. Ut enim ad minim veniam, quis nostrud exercitation
`)
noRoute := []byte(`
route to: 0.0.0.0
destination: default
mask: default
`)
badRoute := []byte(`
route to: 0.0.0.0
destination: default
mask: default
gateway: foo
interface: en0
flags: <UP,GATEWAY,DONE,STATIC,PRCLONING>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire
0 0 0 0 0 0 1500 0
`)
testcases := []testcase{
{correctData, true, "172.16.32.1"},
{randomData, false, ""},
{noRoute, false, ""},
{badRoute, false, ""},
}
test(t, testcases, parseDarwinRouteGet)
}
func TestParseBSDSolarisNetstat(t *testing.T) {
correctDataFreeBSD := []byte(`
Routing tables
Internet:
Destination Gateway Flags Netif Expire
default 10.88.88.2 UGS em0
10.88.88.0/24 link#1 U em0
10.88.88.148 link#1 UHS lo0
127.0.0.1 link#2 UH lo0
Internet6:
Destination Gateway Flags Netif Expire
::/96 ::1 UGRS lo0
::1 link#2 UH lo0
::ffff:0.0.0.0/96 ::1 UGRS lo0
fe80::/10 ::1 UGRS lo0
`)
correctDataSolaris := []byte(`
Routing Table: IPv4
Destination Gateway Flags Ref Use Interface
-------------------- -------------------- ----- ----- ---------- ---------
default 172.16.32.1 UG 2 76419 net0
127.0.0.1 127.0.0.1 UH 2 36 lo0
172.16.32.0 172.16.32.17 U 4 8100 net0
Routing Table: IPv6
Destination/Mask Gateway Flags Ref Use If
--------------------------- --------------------------- ----- --- ------- -----
::1 ::1 UH 3 75382 lo0
2001:470:deeb:32::/64 2001:470:deeb:32::17 U 3 2744 net0
fe80::/10 fe80::6082:52ff:fedc:7df0 U 3 8430 net0
`)
randomData := []byte(`
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna
aliqua. Ut enim ad minim veniam, quis nostrud exercitation
`)
noRoute := []byte(`
Internet:
Destination Gateway Flags Netif Expire
10.88.88.0/24 link#1 U em0
10.88.88.148 link#1 UHS lo0
127.0.0.1 link#2 UH lo0
`)
badRoute := []byte(`
Internet:
Destination Gateway Flags Netif Expire
default foo UGS em0
10.88.88.0/24 link#1 U em0
10.88.88.148 link#1 UHS lo0
127.0.0.1 link#2 UH lo0
`)
testcases := []testcase{
{correctDataFreeBSD, true, "10.88.88.2"},
{correctDataSolaris, true, "172.16.32.1"},
{randomData, false, ""},
{noRoute, false, ""},
{badRoute, false, ""},
}
test(t, testcases, parseBSDSolarisNetstat)
}
func test(t *testing.T, testcases []testcase, fn func([]byte) (net.IP, error)) {
for i, tc := range testcases {
net, err := fn(tc.output)
if tc.ok {
if err != nil {
t.Errorf("Unexpected error in test #%d: %v", i, err)
}
if net.String() != tc.gateway {
t.Errorf("Unexpected gateway address %v != %s", net, tc.gateway)
}
} else if err == nil {
t.Errorf("Unexpected nil error in test #%d", i)
}
}
}