@Test
void firstMonthInQuarterAdjuster() {

	assertThat(QuarterUtils.firstMonthInQuarterAdjuster().adjustInto(LocalDate.of(2018, 12, 25)))
			.isEqualTo(LocalDate.of(2018, 10, 25));
	assertThat(QuarterUtils.firstMonthInQuarterAdjuster().adjustInto(LocalDateTime.of(2018, 2, 5, 5, 5)))
			.isEqualTo(LocalDateTime.of(2018, 1, 5, 5, 5));
}