'Test that overriding start date on a chapter works.'

def test_override_start(self):

    ccx_start = datetime.datetime(2014, 12, 25, 0, 0, tzinfo=pytz.UTC)
    chapter = self.ccx_course.get_children()[0]
    override_field_for_ccx(self.ccx, chapter, 'start', ccx_start)
    self.assertEquals(chapter.start, ccx_start)
