@Test
public void shouldHandleAscii() {

  Codec<String> asciiCodec = mapper.codecFor(primitive(ASCII));
  assertThat(asciiCodec).isEqualTo(mapper.ascii);
  encodeAndDecode(asciiCodec, "hello", "0x68656c6c6f");
  encodeAndDecode(asciiCodec, "", "0x");
  encodeAndDecode(asciiCodec, null, null);
}