@Test
public void shouldReturnFirstDayOfYear() {

	
	final Date testDate = new GregorianCalendar(2019, Calendar.JULY, 17).getTime();
	
	final Date result = DateUtils.getFirstDayOfYear(testDate);
	
	final Date expectedDate = new GregorianCalendar(2019, Calendar.JANUARY, 1).getTime();
	assertThat(result, is(expectedDate));
}