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# ->render()
 -  renders a select tag for the year
 -  renders a select tag for the month
 -  renders a select tag for the day
 -  renders a select tag for the hour
 -  renders a select tag for the minute
 -  renders a select tag for the second
 -  renders a select tag for the year
 -  renders a select tag for the month
 -  renders a select tag for the day
 -  renders a select tag for the hour
 -  renders a select tag for the minute
 -  renders a select tag for the second
 -  renders a select tag for the year
 -  renders a select tag for the month
 -  renders a select tag for the day
 -  renders a select tag for the hour
 -  renders a select tag for the minute
 -  renders a select tag for the second
# selected date / time
 -  renders a select tag for the year
 -  renders a select tag for the month
 -  renders a select tag for the day
 -  renders a select tag for the hour
 -  renders a select tag for the minute
 -  renders a select tag for the second
# invalid date / time
 -  renders a select tag for the year
 -  renders a select tag for the month
 -  renders a select tag for the day
 -  renders a select tag for the hour
 -  renders a select tag for the minute
 -  renders a select tag for the second
 -  renders a select tag for the year
 -  renders a select tag for the month
 -  renders a select tag for the day
 -  renders a select tag for the hour
 -  renders a select tag for the minute
 -  renders a select tag for the second
# number of options in each select
 -  renders a select tag for the 10 years around the current one
 -  renders a select tag for the 12 months in a year
 -  renders a select tag for the 31 days in a month
 -  renders a select tag for the 24 hours in a day
 -  renders a select tag for the 60 minutes in an hour
 -  renders a select tag for the 60 seconds in a minute
# date and time format option
 -  renders 3 selects with a default / as a format
 -  renders 3 selects with a default / as a format
 -  renders 3 selects with a default : as a format
 -  renders 3 selects with a default : as a format
# change date and time format option
 -  can change the default format
 -  can change the default format
 -  can change the default format
 -  can change the default format
# with_time option
 -  does not render the time if the with_time option is disabled
# date and time options as array
 -  throws a InvalidArgumentException if the date/time options is not an array
# attributes
 -  takes the attributes into account for all the five embedded widgets
 -  takes the attributes into account for all the five embedded widgets
# id_format
 -  month considers id_format
 -  day considers id_format
 -  year considers id_format
 -  hour considers id_format
 -  minute considers id_format
 -  month does not override subwidget id_format
 -  day does not override subwidget id_format
 -  year does not override subwidget id_format
 -  hour does not override subwidget id_format
 -  minute does not override subwidget id_format
# Looks like everything went fine.