t.Errorf("Array: expected no error but got string %q", err.Error())
	}
	if e := [1]int{arg}; !reflect.DeepEqual(replyArray, e) {
		t.Errorf("Array: expected %v got %v", e, replyArray)
	}
}

func TestMalformedInput(t *testing.T) {
	cli, srv := net.Pipe()
	go cli.Write([]byte(`{id:1}`)) // invalid json
	ServeConn(srv)                 // must return, not loop
}

func TestMalformedOutput(t *testing.T) {