@Test
public void should_not_detect_char_or_digit_separator_candidate() {

    Map<Character, Separator> separatorMap = new HashMap<>();
    char[] cases = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".toCharArray();
    for (char candidate : cases) {
        csvSchemaParser.processCharAsSeparatorCandidate(candidate, separatorMap,
                CSVSchemaParser.DEFAULT_VALID_SEPARATORS, 0);
    }
    assertTrue(separatorMap.isEmpty());
}