func TestICMPFilter(t *testing.T) { switch runtime.GOOS { case "linux": default: t.Skipf("not supported on %s", runtime.GOOS) } var f ipv4.ICMPFilter for _, toggle := range []bool{false, true} { f.SetAll(toggle) for _, typ := range []ipv4.ICMPType{ ipv4.ICMPTypeDestinationUnreachable, ipv4.ICMPTypeEchoReply, ipv4.ICMPTypeTimeExceeded, ipv4.ICMPTypeParameterProblem, } { f.Accept(typ) if f.WillBlock(typ) { t.Errorf("ipv4.ICMPFilter.Set(%v, false) failed", typ) } f.Block(typ) if !f.WillBlock(typ) { t.Errorf("ipv4.ICMPFilter.Set(%v, true) failed", typ) } } } }