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package interfaces
import (
"errors"
"net"
"testing"
"github.com/stretchr/testify/require"
)
func fakeIface(idx int, name string, loopback bool) net.Interface {
var flags net.Flags
if loopback {
flags |= net.FlagLoopback
}
return net.Interface{
Index: idx,
MTU: 1500,
Name: name,
HardwareAddr: []byte{0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff},
Flags: flags,
}
}
func TestGetLoopbackInterfaces(t *testing.T) {
interfaceGetter = func() ([]net.Interface, error) {
return []net.Interface{
fakeIface(0, "lo", true),
fakeIface(1, "eth0", false),
fakeIface(2, "eth1", false),
}, nil
}
ifaces, err := GetLoopbackInterfaces()
// this has to be reassigned before any require.* call
interfaceGetter = net.Interfaces
require.NoError(t, err)
require.Equal(t, 1, len(ifaces))
}
func TestGetLoopbackInterfacesError(t *testing.T) {
interfaceGetter = func() ([]net.Interface, error) {
return nil, errors.New("expected error")
}
_, err := GetLoopbackInterfaces()
// this has to be reassigned before any require.* call
interfaceGetter = net.Interfaces
require.Error(t, err)
}
func TestGetNonLoopbackInterfaces(t *testing.T) {
interfaceGetter = func() ([]net.Interface, error) {
return []net.Interface{
fakeIface(0, "lo", true),
fakeIface(1, "eth0", false),
fakeIface(2, "eth1", false),
}, nil
}
ifaces, err := GetNonLoopbackInterfaces()
// this has to be reassigned before any require.* call
interfaceGetter = net.Interfaces
require.NoError(t, err)
require.Equal(t, 2, len(ifaces))
}
func TestGetNonLoopbackInterfacesError(t *testing.T) {
interfaceGetter = func() ([]net.Interface, error) {
return nil, errors.New("expected error")
}
_, err := GetNonLoopbackInterfaces()
// this has to be reassigned before any require.* call
interfaceGetter = net.Interfaces
require.Error(t, err)
}
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