DueDateView extends RelativeLayout { public void setSubtitle(String subtitle) { mSubtitle.setText(subtitle); } DueDateView(Context context, AttributeSet attrs);  DueDateView(Context context, AttributeSet attrs, int defStyleAttr); void select(boolean isSelected); Date getDate(); void setInitDate(Date date); void setPickDate(int year, int monthOfYear, int dayOfMonth); void setDayTitle(String title); void setSubtitle(String subtitle);  }
@Test public void testSetSubtitle() throws Exception { mDueDateView.setSubtitle("subtitle"); assertTextViewContent(mSubtitle, "subtitle"); }