### Question:
TimeZoneServiceImpl implements TimeZoneService { double toHours(final long milliseconds) { return milliseconds / 1000.0d / 60.0d / 60.0d; }  @Override List<DMNSimpleTimeZone> getTimeZones();  }### Answer:
@Test public void testToHours() { final long input = 3600000; final double expected = 1.0d; final double actual = service.toHours(input); assertEquals(expected, actual, 0.01d); }
@Test public void testToHoursOneAndAHalfHour() { final long input = 5400000; final double expected = 1.5d; final double actual = service.toHours(input); assertEquals(expected, actual, 0.01d); }