@Test
public void testConvert() {

    assertTrue(deepEquals(new Integer[]{123}, converter.convert("123", Integer[].class, Integer.class)));
    assertTrue(deepEquals(new Integer[]{1, 2, 3}, converter.convert("1,2,3", Integer[].class, null)));
    assertNull(converter.convert("", Integer[].class, null));
    assertNull(converter.convert(null, Integer[].class, null));
}