func TestChangeInterfaceName(t *testing.T) {
teardown := setUp(t)
defer teardown()
netlink.LinkAdd(&netlink.Dummy{netlink.LinkAttrs{Name: "foo1"}})
err := ChangeInterfaceName("foo1", "eth42")
if err != nil {
t.Fatal(err)
}
}
// Each test that calls setUp runs in it's own netns
func setUp(t *testing.T) tearDown {
// lock thread since the namespace is thread local
runtime.LockOSThread()
var err error
ns, err := netns.New()
if err != nil {
t.Fatal("Failed to create newns", ns)
}
netlink.LinkAdd(&netlink.Dummy{netlink.LinkAttrs{Name: testIface}})
return func() {
ns.Close()
runtime.UnlockOSThread()
}
}
func TestSetInterfaceInNamespaceFd(t *testing.T) {
teardown := setUp(t)
defer teardown()
newns, err := netns.New()
if err != nil {
t.Fatal("Failed to create newns")
}
defer newns.Close()
netlink.LinkAdd(&netlink.Dummy{netlink.LinkAttrs{Name: "foo2"}})
err = SetInterfaceInNamespaceFd("foo2", uintptr(newns))
if err != nil {
t.Fatal(err)
}
_, err = netlink.LinkByName("bar")
if err == nil {
t.Fatal("Link foo2 is still in newns")
}
}