@Test
public void testParse() {

    final String nullString = null;
    final String emptyString = null;
    final String integerString = "1";
    final String decimalString = "1.0";
    assertThat(Integers.parse(nullString), is(nullValue()));
    assertThat(Integers.parse(emptyString), is(nullValue()));
    assertThat(Integers.parse(integerString), is(1));
    assertThat(Integers.parse(decimalString), is(nullValue()));
}