@Test
public void testConvert() throws Exception {
Converter hc = new NumericConverter(new HashMap<String, Object>());
assertNull(hc.convert(null));
assertEquals("", hc.convert(""));
assertEquals("lol no number", hc.convert("lol no number"));
assertEquals(9001, hc.convert("9001"));
assertEquals(2147483648L, hc.convert("2147483648"));
assertEquals(10.4D, hc.convert("10.4"));
assertEquals(Integer.class, hc.convert("4").getClass());