void testVersionParsing() {
        checkVersionParsing("1", 1, 0, 0, 0, null);
        checkVersionParsing("1.2", 1, 2, 0, 0, null);
        checkVersionParsing("1.2.3", 1, 2, 3, 0, null);
        checkVersionParsing("1.2.3-1", 1, 2, 3, 1, null);
        checkVersionParsing("1.2.3-alpha-1", 1, 2, 3, 0, "alpha-1");
        checkVersionParsing("1.2-alpha-1", 1, 2, 0, 0, "alpha-1");

        assertEquals("3", "ab2345", StringUtil.replace("12345", "1", "ab"));
        assertEquals("4", "a234a", StringUtil.replace("12341", "1", "a"));
        assertEquals("5", "ab234abab234ab", StringUtil.replace("1234112341", "1", "ab"));
        assertEquals("6", "a\\nb", StringUtil.replace("a\nb", "\n", "\\n"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testSplit() throws Exception {

                type: integer
              communities:
                description: The BGP communities to be associated with the announcement.
                  Each item can be a standard community of the form 1234:1234, a large
                  community of the form large:1234:1234:1234 or the name of an alias
                  defined in the Community CRD.
                items:
                  type: string

	s string
	a []string
}

var fieldstests = []FieldsTest{
	{"", []string{}},
	{" ", []string{}},
	{" \t ", []string{}},
	{"  abc  ", []string{"abc"}},
	{"1 2 3 4", []string{"1", "2", "3", "4"}},
	{"1  2  3  4", []string{"1", "2", "3", "4"}},
	{"1\t\t2\t\t3\t4", []string{"1", "2", "3", "4"}},
	{"1\u20002\u20013\u20024", []string{"1", "2", "3", "4"}},
	{"\u2000\u2001\u2002", []string{}},