assertThat(replacingEscaper.escape("\tFish &\0 Chips\r\n"))
        .isEqualTo("<tab>Fish <and>? Chips?<newline>");
  }

  public void testCodePointsFromSurrogatePairs() throws IOException {
    UnicodeEscaper surrogateEscaper =
        new ArrayBasedUnicodeEscaper(NO_REPLACEMENTS, 0, 0x20000, null) {
          private final char[] escaped = new char[] {'X'};