### Question:
LoaderUtils { public static LongShort parseLongShort(String str) { switch (str.toUpperCase(Locale.ENGLISH)) { case "LONG": case "L": return LongShort.LONG; case "SHORT": case "S": return LongShort.SHORT; default: throw new IllegalArgumentException( "Unknown LongShort value, must be 'Long' or 'Short' but was '" + str + "'; " + "parser is case insensitive and also accepts 'L' and 'S'"); } } private  LoaderUtils(); static Index findIndex(String reference); static boolean parseBoolean(String str); static int parseInteger(String str); static double parseDouble(String str); static double parseDoublePercent(String str); static BigDecimal parseBigDecimal(String str); static BigDecimal parseBigDecimalPercent(String str); static LocalDate parseDate(String str, DateTimeFormatter... formatters); static LocalDate parseDate(String str); static YearMonth parseYearMonth(String str); static LocalTime parseTime(String str); static ZoneId parseZoneId(String str); static Period parsePeriod(String str); static Tenor parseTenor(String str); static Optional<Tenor> tryParseTenor(String str); static Frequency parseFrequency(String str); static Currency parseCurrency(String str); static Optional<Currency> tryParseCurrency(String str); static DayCount parseDayCount(String str); static BusinessDayConvention parseBusinessDayConvention(String str); static RollConvention parseRollConvention(String str); static BuySell parseBuySell(String str); static PayReceive parsePayReceive(String str); static PutCall parsePutCall(String str); static LongShort parseLongShort(String str); static final String DEFAULT_TRADE_SCHEME; static final String DEFAULT_POSITION_SCHEME; static final String DEFAULT_SECURITY_SCHEME; }### Answer:
@Test public void test_parseLongShort() { assertThat(LoaderUtils.parseLongShort("LONG")).isEqualTo(LongShort.LONG); assertThat(LoaderUtils.parseLongShort("Long")).isEqualTo(LongShort.LONG); assertThat(LoaderUtils.parseLongShort("long")).isEqualTo(LongShort.LONG); assertThat(LoaderUtils.parseLongShort("l")).isEqualTo(LongShort.LONG); assertThat(LoaderUtils.parseLongShort("SHORT")).isEqualTo(LongShort.SHORT); assertThat(LoaderUtils.parseLongShort("Short")).isEqualTo(LongShort.SHORT); assertThat(LoaderUtils.parseLongShort("short")).isEqualTo(LongShort.SHORT); assertThat(LoaderUtils.parseLongShort("s")).isEqualTo(LongShort.SHORT); assertThatIllegalArgumentException().isThrownBy(() -> LoaderUtils.parseLongShort("Rubbish")); }