### Question:
IntervalWithTimeZone { public Interval toInterval() { return Interval.parse(timespan); } IntervalWithTimeZone(String timespan); DateTimeZone getTimezone(); Interval toInterval(); @Override String toString();  }### Answer:
@Test public void shouldParseToJodaInterval() { IntervalWithTimeZone interval = new IntervalWithTimeZone(VALID_ISO8601_RELATIVE_START); assertThat(interval.toInterval(), is(equalTo(new Interval(VALID_ISO8601_RELATIVE_START)))); }