### Question:
LocalDateToSqlDateColumnMapper extends AbstractDateColumnMapper<LocalDate> { @Override public String toNonNullString(LocalDate value) { return value.toString(); }  @Override LocalDate fromNonNullValue(Date value); @Override LocalDate fromNonNullString(String s); @Override Date toNonNullValue(LocalDate value); @Override String toNonNullString(LocalDate value);  }### Answer:
@Test public void toNonNullString__it_should_return_string_in_ISO8601_format(){ LocalDate value = new LocalDate(YEAR, MONTH, DAY); String actualValue = dateColumnMapper.toNonNullString(value); assertThat("local date formatting ", actualValue, is(YEAR+"-"+MONTH+"-"+DAY)); }