@Test
public void testConvertValue() throws Exception {

    UppercaseStandardizer standardizer = UppercaseStandardizer.instance();
    assertEquals("ABC", standardizer.convertValue("abc"));
    assertEquals("HOW ARE YOU?", standardizer.convertValue("how are you?"));
    assertEquals("12 PYRAMID ST.", standardizer.convertValue("12 pyramid st."));
    assertEquals("12 PYRAMID ST.", standardizer.convertValue("12 PYRAMID ST."));
    assertEquals("", standardizer.convertValue(""));
}