@Test
public void testGetPropertyStringList(){

        String key = "ranger.users.roles.list";
        PropertiesUtil.getPropertiesMap().put("ranger.users.roles.list", "read,write,access");
        String[] actualroles = PropertiesUtil.getPropertyStringList(key);
        Assert.assertEquals("read", actualroles[0]);
        Assert.assertEquals("write", actualroles[1]);
        Assert.assertEquals("access", actualroles[2]);
}