assertEquals("abc", StringUtil.substringFromLast("abc", ""));
        assertEquals("abc", StringUtil.substringFromLast("abc", null));
        assertEquals("abc", StringUtil.substringFromLast("abc", "dddd"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testSubstringToLast() throws Exception {
        assertEquals("", StringUtil.substringToLast("abc", "c"));

gi_ve_sa".split("_"),longDateFormat:{LT:"HH:mm",LTS:"HH:mm:ss",L:"DD/MM/YYYY",LL:"D MMMM YYYY",LLL:"D MMMM YYYY HH:mm",LLLL:"dddd D MMMM YYYY HH:mm"},calendar:{sameDay:"[Oggi alle] LT",nextDay:"[Domani alle] LT",nextWeek:"dddd [alle] LT",lastDay:"[Ieri alle] LT",lastWeek:function(){switch(this.day()){case 0:return"[la scorsa] dddd [alle] LT";default:return"[lo scorso] dddd [alle] LT"}},sameElse:"L"},relativeTime:{future:function(e){return(/^[0-9].+$/.test(e)?"tra":"in")+" "+e},past:"%s fa",s:"alcuni...