@Test
public void testAgeMergerWeeks() {

    
    AgeMerger merger = new AgeMerger();
    
    Number expected = 20.0;
    
    Calendar cal = Calendar.getInstance();
    cal.add(Calendar.WEEK_OF_YEAR, -1* expected.intValue());
    
    Number result = merger.mergeObjects(cal, new String[] { AgeMerger.WEEKS });
    
    assertEquals("should be the same age in weeks", expected.intValue(), result.intValue());
    
}