var chai = require("chai");
var jalaliMoment = require("./jalali-moment.js");
var moment = require("moment");

chai.should();

jalaliMoment.updateLocale("en"
    , { week:
        { dow: 6
            , doy: 12
        }
        , longDateFormat:
            { LT: "h:mm A"
                , L: "jYYYY/jMM/jDD"
                , LL: "jD jMMMM jYYYY"
                , LLL: "jD jMMMM jYYYY LT"
                , LLLL: "dddd, jD jMMMM jYYYY LT"
            }
    }
);

describe("moment", function() {
    describe("#parse", function() {
        it("should parse gregorian dates", function() {
            var m = jalaliMoment("1981/8/17 07:10:20", "YYYY/M/D hh:mm:ss");
            m.format("YYYY-MM-DD hh:mm:ss").should.be.equal("1981-08-17 07:10:20");
            m.milliseconds().should.be.equal(0);
        });
        it("parse persian dates", function () {
            jalaliMoment.locale("fa");
            var m1 = jalaliMoment("1367/11/04", "YYYY/M/D");
            m1.format("YYYY/MM/DD").should.be.equal("1367/11/04");
            m1 = jalaliMoment("1367/11/4", "YYYY/M/D");
            m1.format("YYYY/MM/DD").should.be.equal("1367/11/04");
            m1 = jalaliMoment("1367/1/4", "YYYY/M/D");
            m1.format("YYYY/MM/DD").should.be.equal("1367/01/04");
            var m1 = jalaliMoment("13671124", "YYYYMMDD");
            m1.format("YYYY/MM/DD").should.be.equal("1367/11/24");
            // var m1 = jalaliMoment("1367/245");
            // m1.format("YYYY/MM/DD").should.be.equal("1367/11/04");
            jalaliMoment.locale("en");
        });

        it("should parse correctly when input is only time", function() {
            var jm = jalaliMoment("07:10:20", "hh:mm:ss");
            var m = moment("07:10:20", "hh:mm:ss");
            jm.format("YYYY-MM-DD hh:mm:ss").should.be.equal(m.format("YYYY-MM-DD hh:mm:ss"))
        });

        it("should parse when only Jalaali year is in the format", function() {
            var m = jalaliMoment("08 1360 17", "MM jYYYY DD");
            m.format("YYYY-MM-DD").should.be.equal("1981-08-17");
            m = jalaliMoment("08 60 17", "MM jYY DD");
            m.format("YYYY-MM-DD").should.be.equal("1981-08-17");
        });

        it("should parse when only Jalaali month is in the format", function() {
            var m = jalaliMoment("1981 5 17", "YYYY jM D");
            m.format("YYYY-MM-DD").should.be.equal("1981-07-17");
        });

        it("should parse when only Jalaali month string is in the format", function() {
            var m = jalaliMoment("1981 Amo 17", "YYYY jMMM D");
            m.format("YYYY-MM-DD").should.be.equal("1981-07-17");
            m = jalaliMoment("1981 Mordaad 17", "YYYY jMMMM D");
            m.format("YYYY-MM-DD").should.be.equal("1981-07-17");
        });

        it("should parse when only Jalaali date is in the format", function() {
            var m = jalaliMoment("1981 26 8", "YYYY jD M");
            m.format("YYYY-MM-DD").should.be.equal("1981-08-15");
        });

        it("should parse when Jalaali year and month are in the format", function() {
            var m = jalaliMoment("17 1360 5", "D jYYYY jM");
            m.format("YYYY-MM-DD").should.be.equal("1981-07-17");
            m = jalaliMoment("1392 7", "jYYYY jM");
            m.format("YYYY-MM-DD").should.be.equal("2013-09-23");
        });

        it("should parse when Jalaali year and date are in the format", function() {
            var m = jalaliMoment("26 1360 8", "jD jYYYY M");
            m.format("YYYY-MM-DD").should.be.equal("1981-08-15");
        });

        it("should parse when Jalaali month and date are in the format", function() {
            jalaliMoment.locale('en');
            var m = jalaliMoment("26 1981 5", "jD YYYY jM");
            m.format("YYYY-MM-DD").should.be.equal("1981-08-17");
        });

        it("should parse when Jalaali year, month and date are in the format", function() {
            var m = jalaliMoment("26 1360 5", "jD jYYYY jM");
            m.format("YYYY-MM-DD").should.be.equal("1981-08-17");
        });

        it("should parse with complex format", function() {
            var m = jalaliMoment("17 26 50 1981 50 8 12", "D jD jYYYY YYYY M M jM");
            m.format("YYYY-MM-DD").should.be.equal("1981-08-17");
        });

        it("should parse format result", function() {
            var f = "jYYYY/jM/jD hh:mm:ss.SSS a"
                , m = jalaliMoment();
            jalaliMoment(m.format(f), f).isSame(m).should.be.equal(true);
        });

        it("should be able to parse in utc", function() {
            var m = jalaliMoment.utc("1360/5/26 07:10:20", "jYYYY/jM/jD hh:mm:ss");
            m.format("YYYY-MM-DD hh:mm:ss Z").should.be.equal("1981-08-17 07:10:20 +00:00");
        });

        it("should parse with a format array", function() {
            var p1 = "jYY jM jD"
                , p2 = "jM jD jYY"
                , p3 = "jD jYY jM"
                , m;
            m = jalaliMoment("60 11 12", ["D YY M", "M D YY", "YY M D"]);
            m.format("YY-MM-DD").should.be.equal("60-11-12");
            m = jalaliMoment("10 11 12", [p1, p2, p3]);
            m.format("jYY-jMM-jDD").should.be.equal("10-11-12");
            m = jalaliMoment("10 11 12", [p2, p3, p1]);
            m.format("jYY-jMM-jDD").should.be.equal("12-10-11");
            m = jalaliMoment("10 11 12", [p3, p1, p2]);
            m.format("jYY-jMM-jDD").should.be.equal("11-12-10");
            m = jalaliMoment("10 11 12", [p3, p2, p1]);
            m.format("jYY-jMM-jDD").should.be.equal("11-12-10");
            m = jalaliMoment("60-11-12", [p3, p2, p1]);
            m.format("jYY-jMM-jDD").should.be.equal("60-11-12");
            m = jalaliMoment("60 11 12", [p3, p2, p1]);
            m.format("jYY-jMM-jDD").should.be.equal("60-11-12");
            m = jalaliMoment("60 8 31", ["YY M D", "jYY jM jD"]);
            m.format("YY-MM-DD").should.be.equal("60-08-31");
            m = jalaliMoment("60 8 31", ["jYY jM jD", "YY M D"]);
            m.format("YY-MM-DD").should.be.equal("60-08-31");
            m = jalaliMoment("60 5 31", ["YY M D", "jYY jM jD"]);
            m.format("YY-MM-DD").should.be.equal("60-05-31");
            m = jalaliMoment("60 5 31", ["jYY jM jD", "YY M D"]);
            m.format("jYY-jMM-jDD").should.be.equal("60-05-31");
        });
    });

    describe("#format", function() {
        it("should work normally when there is no Jalaali token", function() {
            var m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD hh:mm:ss");
            m.format("YYYY-MM-DD hh:mm:ss").should.be.equal("1981-08-17 07:10:20");
        });

        it("should format to Jalaali with Jalaali tokens", function() {
            var m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD hh:mm:ss");
            m.format("jYYYY-jMM-jDD hh:mm:ss").should.be.equal("1360-05-26 07:10:20");
        });

        it("should format with escaped and unescaped tokens", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("[My] birt\\h [is] jYYYY or YYYY").should.be.equal("My birth is 1360 or 1981");
        });

        it("should format with mixed tokens", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jYYYY/jMM/jDD = YYYY-MM-DD").should.be.equal("1360/05/26 = 1981-08-17");
        });

        it("should format with jMo", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jMo").should.be.equal("5th");
        });

        it("should format with jM", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jM").should.be.equal("5");
        });

        it("should format with jMM", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jMM").should.be.equal("05");
        });

        it("should format with jMMM", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jMMM").should.be.equal("Amo");
        });

        it("should format with jMMMM", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jMMMM").should.be.equal("Mordaad");
        });

        it("should format with jDo", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jDo").should.be.equal("26th");
        });

        it("should format with jD", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jD").should.be.equal("26");
        });

        it("should format with jDD", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jDD").should.be.equal("26");
            m = jalaliMoment("1981-08-23", "YYYY-MM-DD");
            m.format("jDD").should.be.equal("01");
        });

        it("should format with jDDD", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jDDD").should.be.equal("150");
        });

        it("should format with jDDDo", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jDDDo").should.be.equal("150th");
        });

        it("should format with jDDDD", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jDDDD").should.be.equal("150");
            m = jalaliMoment("1981-03-21", "YYYY-MM-DD");
            m.format("jDDDD").should.be.equal("001");
        });

        it("should format with jwo", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jwo").should.be.equal("22nd");
        });

        it("should format with jw", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jw").should.be.equal("22");
        });

        it("should format with jww", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jww").should.be.equal("22");
            m = jalaliMoment("1981-04-23", "YYYY-MM-DD");
            m.format("jww").should.be.equal("05");
        });

        it("should format with jYY", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jYY").should.be.equal("60");
        });

        it("should format with jYYYY", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jYYYY").should.be.equal("1360");
        });

        it("should format with jYYYYY", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jYYYYY").should.be.equal("01360");
        });

        it("should format with jgg", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jgg").should.be.equal("60");
        });

        it("should format with jgggg", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jgggg").should.be.equal("1360");
        });

        it("should format with jggggg", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("jggggg").should.be.equal("01360");
        });

        it("should work with long date formats too", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.format("LT").should.be.equal("12:00 AM");
            m.format("L").should.be.equal("1360/05/26");
            m.format("l").should.be.equal("1360/5/26");
            m.format("LL").should.be.equal("26 Mordaad 1360");
            m.format("ll").should.be.equal("26 Amo 1360");
            m.format("LLL").should.be.equal("26 Mordaad 1360 12:00 AM");
            m.format("lll").should.be.equal("26 Amo 1360 12:00 AM");
            m.format("LLLL").should.be.equal("Monday, 26 Mordaad 1360 12:00 AM");
            m.format("llll").should.be.equal("Mon, 26 Amo 1360 12:00 AM");
        });

        it("should format another", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            // m.format("Z").should.be.equal("+03:30"); its depend on where it executed
            // m.format("X").should.be.equal("366841800");
            m.format("dddd").should.be.equal("Monday");
            m.format("YYYYY").should.be.equal("01981");
            m.format("DDDD").should.be.equal("229");
            m.format("jDDD").should.be.equal("150");
            m.format("jYYYYY").should.be.equal("01360");
        });
    });

    describe("#jYear", function() {
        it("should return Jalaali year", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jYear().should.be.equal(1360);
        });

        it("should set Jalaali year", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jYear(1392);
            m.format("jYYYY/jM/jD").should.be.equal("1392/5/26");
            m = jalaliMoment("2013-03-20", "YYYY-MM-DD");
            m.format("jYY/jM/jD").should.be.equal("91/12/30");
            m.jYear(1392);
            m.format("jYY/jM/jD").should.be.equal("92/12/29");
        });

        it("should also has jYears alias", function() {
            jalaliMoment.fn.jYear.should.be.equal(jalaliMoment.fn.jYears);
        });
    });

    describe("#jMonth", function() {
        it("should return Jalaali month", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jMonth().should.be.equal(4);
        });

        it("should set Jalaali month", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jMonth(7);
            m.format("jYYYY/jM/jD").should.be.equal("1360/8/26");
            m = jalaliMoment("2012-08-21", "YYYY-MM-DD");
            m.format("jYY/jM/jD").should.be.equal("91/5/31");
            m.jMonth(11);
            m.format("jYY/jM/jD").should.be.equal("91/12/30");
            m = jalaliMoment("2013-08-22");
            m.format("jYY/jM/jD").should.be.equal("92/5/31");
            m.jMonth(11);
            m.format("jYY/jM/jD").should.be.equal("92/12/29");
        });

        it("should also has jMonths alias", function() {
            jalaliMoment.fn.jMonth.should.be.equal(jalaliMoment.fn.jMonths);
        });
    });

    describe("#jDay", function() {
        it("should return Jalaali week day name", function() {
            var m = jalaliMoment("1989-01-24", "YYYY-MM-DD");
            m.jDay().should.be.equal(3);
        });

        it("should set Jalaali month", function() {
            var m = jalaliMoment("1989-01-24", "YYYY-MM-DD");
            m.jDay(5);
            m.format("jYYYY/jM/jD").should.be.equal("1367/11/6");
        });
    });
    describe("#jDaysInMonth", function() {
        it("should return Jalaali days count in month", function() {
            const md = jalaliMoment.from('1398/12/01', 'fa', 'YYYY/MM/DD').jDaysInMonth()
            md.should.be.equal(29);
        });
        it("should return ordibehesht days count", function() {
            const md = jalaliMoment.from('1398/01/01', 'fa', 'jYYYY/jMM/jDD').jDaysInMonth();
            md.should.be.equal(31);
        });
        it("should return leap year esfand days count", function() {
            const md = jalaliMoment.jDaysInMonth(1398, 11); // esfand 98
            md.should.be.equal(29);
        });
    });

    describe("#jDate", function() {
        it("should return Jalaali date", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jDate().should.be.equal(26);
        });

        it("should set Jalaali date", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jDate(30);
            m.format("jYYYY/jM/jD").should.be.equal("1360/5/30");
            m = jalaliMoment("2013-03-01", "YYYY-MM-DD");
            m.format("jYY/jM/jD").should.be.equal("91/12/11");
            m.jDate(29);
            m.format("jYY/jM/jD").should.be.equal("91/12/29");
            m.jDate(30);
            m.format("jYY/jM/jD").should.be.equal("91/12/30");
            m.jDate(30);
            m.format("jYY/jM/jD").should.be.equal("91/12/30");
            m.jDate(31);
            m.format("jYY/jM/jD").should.be.equal("92/1/1");
            m.jDate(90);
            m.format("jYY/jM/jD").should.be.equal("92/3/28");
        });

        it("should also has jDates alias", function() {
            jalaliMoment.fn.jDate.should.be.equal(jalaliMoment.fn.jDates);
        });
    });

    describe("#jDayOfYear", function() {
        it("should return Jalaali date of year", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jDayOfYear().should.be.equal(150);
            m = jalaliMoment("1981-03-21", "YYYY-MM-DD");
            m.jDayOfYear().should.be.equal(1);
            m = jalaliMoment("1982-03-20", "YYYY-MM-DD");
            m.jDayOfYear().should.be.equal(365);
            m = jalaliMoment("1984-03-20", "YYYY-MM-DD");
            m.jDayOfYear().should.be.equal(366);
        });

        it("should set Jalaali date of year", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jDayOfYear(30);
            m.format("jYYYY/jM/jD").should.be.equal("1360/1/30");
            m.jDayOfYear(364);
            m.format("jYY/jM/jD").should.be.equal("60/12/28");
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("60/12/29");
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("61/1/1");
            m.jDayOfYear(1);
            m.format("jYY/jM/jD").should.be.equal("61/1/1");
            m.jDayOfYear(90);
            m.format("jYY/jM/jD").should.be.equal("61/3/28");
            m.jDayOfYear(365 + 366);
            m.format("jYY/jM/jD").should.be.equal("62/12/30");
        });
    });

    describe("#jWeek", function() {
        it("jweek with both locale", function() {
            var m = jalaliMoment("1396/01/05","jYYYY/jMM/jDD");
            jalaliMoment.locale("en");
            m.locale("en");
            m.format("jYY/jM/jD").should.be.equal("96/1/5");
            m.jWeek().should.be.equal(2);
            m.locale("fa");
            m.jWeek().should.be.equal(2);
        });
        it("should return Jalaali week of year", function() {
            var m = jalaliMoment("1396/01/04","jYYYY/jMM/jDD");
            m.format("jYY/jM/jD").should.be.equal("96/1/4");
            m.jWeek().should.be.equal(1);
            m = jalaliMoment("1396/01/05","jYYYY/jMM/jDD");
            m.format("jYY/jM/jD").should.be.equal("96/1/5");
            m.jWeek().should.be.equal(2);
            m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jWeek().should.be.equal(22);
            m.jDayOfYear(1);
            m.format("jYY/jM/jD").should.be.equal("60/1/1");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(8);
            m.format("jYY/jM/jD").should.be.equal("60/1/8");
            m.jWeek().should.be.equal(2);
            m.jDayOfYear(14);
            m.format("jYY/jM/jD").should.be.equal("60/1/14");
            m.jWeek().should.be.equal(2);
            m.jDayOfYear(364);
            m.format("jYY/jM/jD").should.be.equal("60/12/28");
            m.jWeek().should.be.equal(52);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("60/12/29");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("61/1/1");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(363);
            m.format("jYY/jM/jD").should.be.equal("61/12/27");
            m.jWeek().should.be.equal(52);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("61/12/29");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("62/1/1");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("62/12/29");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("62/12/30");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(367);
            m.format("jYY/jM/jD").should.be.equal("63/1/1");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("63/12/29");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("64/1/1");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("64/12/29");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("65/1/1");
            m.jWeek().should.be.equal(1);
            m.jDayOfYear(358);
            m.format("jYY/jM/jD").should.be.equal("65/12/22");
            m.jWeek().should.be.equal(52);
            m.jDayOfYear(359);
            m.format("jYY/jM/jD").should.be.equal("65/12/23");
            m.jWeek().should.be.equal(53);
            m.jDayOfYear(360);
            m.format("jYY/jM/jD").should.be.equal("65/12/24");
            m.jWeek().should.be.equal(53);
            m.jDayOfYear(361);
            m.format("jYY/jM/jD").should.be.equal("65/12/25");
            m.jWeek().should.be.equal(53);
            m.jDayOfYear(362);
            m.format("jYY/jM/jD").should.be.equal("65/12/26");
            m.jWeek().should.be.equal(53);
            m.jDayOfYear(363);
            m.format("jYY/jM/jD").should.be.equal("65/12/27");
            m.jWeek().should.be.equal(53);
            m.jDayOfYear(364);
            m.format("jYY/jM/jD").should.be.equal("65/12/28");
            m.jWeek().should.be.equal(53);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("65/12/29");
            m.jWeek().should.be.equal(53);
        });

        it("should set Jalaali week of year", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jWeek(1);
            m.format("jYY/jM/jD").should.be.equal("60/1/3");
            m.jWeek(22);
            m.format("jYY/jM/jD").should.be.equal("60/5/26");
            m.jWeek(52);
            m.format("jYY/jM/jD").should.be.equal("60/12/24");
            m.jWeek(53);
            m.format("jYY/jM/jD").should.be.equal("61/1/2");
            m.jWeek(1);
            m.format("jYY/jM/jD").should.be.equal("61/1/2");
            m.jWeek(0);
            m.format("jYY/jM/jD").should.be.equal("60/12/24");
            m.jWeek(-1);
            m.format("jYY/jM/jD").should.be.equal("59/12/18");
        });
    });

    describe("#jWeekYear", function() {
        it("should return Jalaali week year", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jWeekYear().should.be.equal(1360);
            m.jDayOfYear(1);
            m.format("jYY/jM/jD").should.be.equal("60/1/1");
            m.jWeekYear().should.be.equal(1360);
            m.jDayOfYear(364);
            m.format("jYY/jM/jD").should.be.equal("60/12/28");
            m.jWeekYear().should.be.equal(1360);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("60/12/29");
            m.jWeekYear().should.be.equal(1361);
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("61/1/1");
            m.jWeekYear().should.be.equal(1361);
            m.jDayOfYear(363);
            m.format("jYY/jM/jD").should.be.equal("61/12/27");
            m.jWeekYear().should.be.equal(1361);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("61/12/29");
            m.jWeekYear().should.be.equal(1362);
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("62/1/1");
            m.jWeekYear().should.be.equal(1362);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("62/12/29");
            m.jWeekYear().should.be.equal(1363);
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("62/12/30");
            m.jWeekYear().should.be.equal(1363);
            m.jDayOfYear(367);
            m.format("jYY/jM/jD").should.be.equal("63/1/1");
            m.jWeekYear().should.be.equal(1363);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("63/12/29");
            m.jWeekYear().should.be.equal(1364);
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("64/1/1");
            m.jWeekYear().should.be.equal(1364);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("64/12/29");
            m.jWeekYear().should.be.equal(1365);
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("65/1/1");
            m.jWeekYear().should.be.equal(1365);
            m.jDayOfYear(358);
            m.format("jYY/jM/jD").should.be.equal("65/12/22");
            m.jWeekYear().should.be.equal(1365);
            m.jDayOfYear(359);
            m.format("jYY/jM/jD").should.be.equal("65/12/23");
            m.jWeekYear().should.be.equal(1365);
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("65/12/29");
            m.jWeekYear().should.be.equal(1365);
            m.jDayOfYear(366);
            m.format("jYY/jM/jD").should.be.equal("66/1/1");
            m.jWeekYear().should.be.equal(1366);
        });

        it("should set Jalaali week year", function() {
            var m = jalaliMoment("1981-08-17", "YYYY-MM-DD");
            m.jWeekYear(1361);
            m.format("jYY/jM/jD").should.be.equal("61/5/26");
            m.jWeekYear(1364);
            m.format("jYY/jM/jD").should.be.equal("64/5/26");
            m.jDayOfYear(365);
            m.format("jYY/jM/jD").should.be.equal("64/12/29");
            m.jWeekYear(1364);
            m.format("jYY/jM/jD").should.be.equal("63/12/29");
            m.jWeekYear(1365);
            m.format("jYY/jM/jD").should.be.equal("64/12/29");
        });
    });

    describe("#startOf", function() {
        it("should work as expected without jYear and jMonth", function() {
            var m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.startOf("year").format("YYYY-MM-DD HH:mm:ss").should.be.equal("1981-01-01 00:00:00");
            m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.startOf("month").format("YYYY-MM-DD HH:mm:ss").should.be.equal("1981-08-01 00:00:00");
            m = jalaliMoment("1981-08-17 07:10:20");
            m.startOf("day").format("YYYY-MM-DD HH:mm:ss").should.be.equal("1981-08-17 00:00:00");
            m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.startOf("week").format("YYYY-MM-DD HH:mm:ss").should.be.equal("1981-08-15 00:00:00");
        });

        it("should return start of Jalaali year, month and date", function() {
            var m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.startOf("jYear").format("jYYYY-jMM-jDD HH:mm:ss").should.be.equal("1360-01-01 00:00:00");
            m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.startOf("jMonth").format("jYYYY-jMM-jDD HH:mm:ss").should.be.equal("1360-05-01 00:00:00");
            m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.startOf("day").format("jYYYY-jMM-jDD HH:mm:ss").should.be.equal("1360-05-26 00:00:00");
            m = jalaliMoment("2017-12-14 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.startOf("jweek").format("jYYYY-jMM-jDD HH:mm:ss").should.be.equal("1396-09-18 00:00:00");
            m.locale("fa").startOf("week").format("jYYYY-jMM-jDD HH:mm:ss").should.be.equal("1396-09-18 00:00:00");
        });
    });

    describe("#endOf", function() {
        it("should work as expected without jYear and jMonth", function() {
            var m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.endOf("year").format("YYYY-MM-DD HH:mm:ss").should.be.equal("1981-12-31 23:59:59");
            m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.endOf("month").format("YYYY-MM-DD HH:mm:ss").should.be.equal("1981-08-31 23:59:59");
            m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.endOf("day").format("YYYY-MM-DD HH:mm:ss").should.be.equal("1981-08-17 23:59:59");
            m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.endOf("week").format("YYYY-MM-DD HH:mm:ss").should.be.equal("1981-08-21 23:59:59");
        });

        it("should return end of Jalaali year, month and date", function() {
            var m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.endOf("jYear").format("jYYYY-jMM-jDD HH:mm:ss").should.be.equal("1360-12-29 23:59:59");
            m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.endOf("jMonth").format("jYYYY-jMM-jDD HH:mm:ss").should.be.equal("1360-05-31 23:59:59");
            m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.endOf("day").format("jYYYY-jMM-jDD HH:mm:ss").should.be.equal("1360-05-26 23:59:59");
            m = jalaliMoment("1981-08-17 07:10:20", "YYYY-MM-DD HH:mm:ss");
            m.endOf("week").format("jYYYY-jMM-jDD HH:mm:ss").should.be.equal("1360-05-30 23:59:59");
        });
        it("endOf week in locale fa #109", function() {
            var m = jalaliMoment.from("1367/11/04", "fa", "YYYY/MM/DD");
            m = m.locale('fa');
            m.endOf("week").format("YYYY-MM-DD").should.be.equal(m.startOf('week').add(7, 'day').subtract(1, 'ms').format("YYYY-MM-DD"));
        });
    });

    describe("#isValid", function() {
        it("should return true when a valid date is parsed and false otherwise", function() {
            var jf = "jYYYY/jMM/jDD"
                , gf = "YYYY-MM-DD";
            jalaliMoment("1981-08-17", gf).isValid().should.be.equal(true);
            jalaliMoment("1981-08-31", gf).isValid().should.be.equal(true);
            jalaliMoment("1981-09-31", gf).isValid().should.be.equal(false);
            jalaliMoment("1360 Mordaad 26", "jYYYY jMMMM jD").isValid().should.be.equal(true);
            jalaliMoment("1360/05/26", jf).isValid().should.be.equal(true);
            jalaliMoment("1360/05/31", jf).isValid().should.be.equal(true);
            jalaliMoment("1360/07/30", jf).isValid().should.be.equal(true);
            jalaliMoment("1360/07/31", jf).isValid().should.be.equal(false);
            jalaliMoment("1360/12/29", jf).isValid().should.be.equal(true);
            jalaliMoment("1360/12/30", jf).isValid().should.be.equal(false);
            jalaliMoment("1360/12/31", jf).isValid().should.be.equal(false);
            jalaliMoment("1360/13/01", jf).isValid().should.be.equal(false);
            jalaliMoment("1393/11/00", jf).isValid().should.be.equal(false);
        });
    });

    describe("#isValid-strict", function () {
        it("should return false when gregorian date is not strictly valid", function () {
            var gf = "YYYY-MM-DD";
            jalaliMoment("1981-08-17", gf).isValid().should.be.equal(true);
            jalaliMoment("1981-08-31", gf).isValid().should.be.equal(true);
            jalaliMoment("1981-08-311", gf).isValid().should.be.equal(true);
            jalaliMoment("1981-08-311", gf, true).isValid().should.be.equal(false);
        });

        it("should return false when jalaali date is not strictly valid", function () {
            var jf = "jYYYY/jMM/jDD";
            jalaliMoment("1360/05/26", jf).isValid().should.be.equal(true);
            jalaliMoment("1360/05/31", jf).isValid().should.be.equal(true);
            jalaliMoment("1360/05/311", jf, true).isValid().should.be.equal(false);
        });
    });

    describe("#clone", function() {
        it("should return a cloned instance", function() {
            var m = jalaliMoment("1360/5/26", "jYYYY/jM/jD")
                , c = m.clone();
            m.add(1, "jYear");
            m.add(4, "day");
            m.format("jYY/jM/jD").should.be.equal("61/5/30");
            c.format("jYY/jM/jD").should.be.equal("60/5/26");
        });
        it("clone of an invalid date is invalid", function () {
            var m1 = jalaliMoment("hello","jYYYY/jMM/jDD");
            m1.isValid().should.be.equal(false);
            m1.clone().isValid().should.be.equal(false);
        });
    });

    describe("#add", function () {
        it("should add gregorian dates correctly", function () {
            var gf = "YYYY-M-D"
                , m = jalaliMoment("1981-8-17", "YYYY-M-D");
            jalaliMoment(m).add(1, "day").format(gf).should.be.equal("1981-8-18");
            jalaliMoment(m).add(10, "days").format(gf).should.be.equal("1981-8-27");
            jalaliMoment(m).add(30, "days").format(gf).should.be.equal("1981-9-16");
            jalaliMoment(m).add(60, "days").format(gf).should.be.equal("1981-10-16");

            jalaliMoment(m).add(1, "month").format(gf).should.be.equal("1981-9-17");
            jalaliMoment(m).add(2, "months").format(gf).should.be.equal("1981-10-17");
            jalaliMoment(m).add(10, "months").format(gf).should.be.equal("1982-6-17");
            jalaliMoment(m).add(20, "months").format(gf).should.be.equal("1983-4-17");

            jalaliMoment(m).add(1, "year").format(gf).should.be.equal("1982-8-17");
            jalaliMoment(m).add(2, "years").format(gf).should.be.equal("1983-8-17");
            jalaliMoment(m).add(10, "years").format(gf).should.be.equal("1991-8-17");
            jalaliMoment(m).add(20, "years").format(gf).should.be.equal("2001-8-17");
        });

        it("should add jalaali dates correctly", function () {
            var jf = "jYYYY/jM/jD"
                , m = jalaliMoment("1360/5/26", "jYYYY/jM/jD");
            jalaliMoment(m).add(1, "day").format(jf).should.be.equal("1360/5/27");
            jalaliMoment(m).add(4, "days").format(jf).should.be.equal("1360/5/30");
            jalaliMoment(m).add(10, "days").format(jf).should.be.equal("1360/6/5");
            jalaliMoment(m).add(30, "days").format(jf).should.be.equal("1360/6/25");
            jalaliMoment(m).add(60, "days").format(jf).should.be.equal("1360/7/24");
            jalaliMoment(m).add(365, "days").format(jf).should.be.equal("1361/5/26");

            jalaliMoment(m).add(1, "jmonth").format(jf).should.be.equal("1360/6/26");
            jalaliMoment(m).add(2, "jmonths").format(jf).should.be.equal("1360/7/26");
            jalaliMoment(m).add(10, "jmonths").format(jf).should.be.equal("1361/3/26");
            jalaliMoment(m).add(20, "jmonths").format(jf).should.be.equal("1362/1/26");

            jalaliMoment(m).add(1, "jyear").format(jf).should.be.equal("1361/5/26");
            jalaliMoment(m).add(2, "jyears").format(jf).should.be.equal("1362/5/26");
            jalaliMoment(m).add(3, "jyears").format(jf).should.be.equal("1363/5/26");
            jalaliMoment(m).add(4, "jyears").format(jf).should.be.equal("1364/5/26");
            jalaliMoment(m).add(10, "jyears").format(jf).should.be.equal("1370/5/26");
            jalaliMoment(m).add(20, "jyears").format(jf).should.be.equal("1380/5/26");
        });

        it("should retain last day of month when adding months or years", function () {
            var jf = "jYYYY/jM/jD"
                , m = jalaliMoment("1393/6/31", jf);
            jalaliMoment(m).add(1, "jmonth").format(jf).should.be.equal("1393/7/30");
            jalaliMoment(m).add(5, "jmonth").format(jf).should.be.equal("1393/11/30");
            jalaliMoment(m).add(6, "jmonth").format(jf).should.be.equal("1393/12/29");

            m = jalaliMoment("1391/12/30", jf);
            jalaliMoment(m).add(1, "jyear").format(jf).should.be.equal("1392/12/29");
            jalaliMoment(m).add(2, "jyear").format(jf).should.be.equal("1393/12/29");
            jalaliMoment(m).add(3, "jyear").format(jf).should.be.equal("1394/12/29");
            jalaliMoment(m).add(4, "jyear").format(jf).should.be.equal("1395/12/30");
        });
    });

    describe("#subtract", function () {
        it("should subtract gregorian dates correctly", function () {
            var gf = "YYYY-M-D"
                , m = jalaliMoment("1981-8-17", "YYYY-M-D");
            jalaliMoment(m).subtract(1, "day").format(gf).should.be.equal("1981-8-16");
            jalaliMoment(m).subtract(10, "days").format(gf).should.be.equal("1981-8-7");
            jalaliMoment(m).subtract(30, "days").format(gf).should.be.equal("1981-7-18");
            jalaliMoment(m).subtract(60, "days").format(gf).should.be.equal("1981-6-18");

            jalaliMoment(m).subtract(1, "month").format(gf).should.be.equal("1981-7-17");
            jalaliMoment(m).subtract(2, "months").format(gf).should.be.equal("1981-6-17");
            jalaliMoment(m).subtract(10, "months").format(gf).should.be.equal("1980-10-17");
            jalaliMoment(m).subtract(20, "months").format(gf).should.be.equal("1979-12-17");

            jalaliMoment(m).subtract(1, "year").format(gf).should.be.equal("1980-8-17");
            jalaliMoment(m).subtract(2, "years").format(gf).should.be.equal("1979-8-17");
            jalaliMoment(m).subtract(10, "years").format(gf).should.be.equal("1971-8-17");
            jalaliMoment(m).subtract(20, "years").format(gf).should.be.equal("1961-8-17");
        });

        it("should subtract jalaali dates correctly", function () {
            var jf = "jYYYY/jM/jD"
                , m = jalaliMoment("1360/5/26", "jYYYY/jM/jD");
            jalaliMoment(m).subtract(1, "day").format(jf).should.be.equal("1360/5/25");
            jalaliMoment(m).subtract(4, "days").format(jf).should.be.equal("1360/5/22");
            jalaliMoment(m).subtract(10, "days").format(jf).should.be.equal("1360/5/16");
            jalaliMoment(m).subtract(30, "days").format(jf).should.be.equal("1360/4/27");
            jalaliMoment(m).subtract(60, "days").format(jf).should.be.equal("1360/3/28");
            jalaliMoment(m).subtract(365, "days").format(jf).should.be.equal("1359/5/26");

            jalaliMoment(m).subtract(1, "jmonth").format(jf).should.be.equal("1360/4/26");
            jalaliMoment(m).subtract(2, "jmonths").format(jf).should.be.equal("1360/3/26");
            jalaliMoment(m).subtract(10, "jmonths").format(jf).should.be.equal("1359/7/26");
            jalaliMoment(m).subtract(20, "jmonths").format(jf).should.be.equal("1358/9/26");

            jalaliMoment(m).subtract(1, "jyear").format(jf).should.be.equal("1359/5/26");
            jalaliMoment(m).subtract(2, "jyears").format(jf).should.be.equal("1358/5/26");
            jalaliMoment(m).subtract(3, "jyears").format(jf).should.be.equal("1357/5/26");
            jalaliMoment(m).subtract(4, "jyears").format(jf).should.be.equal("1356/5/26");
            jalaliMoment(m).subtract(10, "jyears").format(jf).should.be.equal("1350/5/26");
            jalaliMoment(m).subtract(20, "jyears").format(jf).should.be.equal("1340/5/26");
        });

        it("should retain last day of month when subtracting months or years", function () {
            var jf = "jYYYY/jM/jD"
                , m = jalaliMoment("1393/1/31", jf);
            jalaliMoment(m).subtract(1, "jmonth").format(jf).should.be.equal("1392/12/29");
            jalaliMoment(m).subtract(6, "jmonth").format(jf).should.be.equal("1392/7/30");
            jalaliMoment(m).subtract(7, "jmonth").format(jf).should.be.equal("1392/6/31");

            m = jalaliMoment("1391/12/30", jf);
            jalaliMoment(m).subtract(1, "jyear").format(jf).should.be.equal("1390/12/29");
            jalaliMoment(m).subtract(2, "jyear").format(jf).should.be.equal("1389/12/29");
            jalaliMoment(m).subtract(3, "jyear").format(jf).should.be.equal("1388/12/29");
            jalaliMoment(m).subtract(4, "jyear").format(jf).should.be.equal("1387/12/30");
        });

        it("should subtract months correctly", function () {
            var jf = "jYYYY/jM/jD"
                , m = jalaliMoment("1393/1/31", jf);
            jalaliMoment(m).subtract(1, "jmonth").format(jf).should.be.equal("1392/12/29");
            jalaliMoment(m).subtract(2, "jmonth").format(jf).should.be.equal("1392/11/30");
            jalaliMoment(m).subtract(7, "jmonth").format(jf).should.be.equal("1392/6/31");
            jalaliMoment(m).subtract(12, "jmonth").format(jf).should.be.equal("1392/1/31");
            jalaliMoment(m).subtract(13, "jmonth").format(jf).should.be.equal("1391/12/30");
            jalaliMoment(m).subtract(25, "jmonth").format(jf).should.be.equal("1390/12/29");

            m = jalaliMoment("1393/1/1", jf);
            jalaliMoment(m).subtract(1, "jmonth").format(jf).should.be.equal("1392/12/1");
            jalaliMoment(m).subtract(2, "jmonth").format(jf).should.be.equal("1392/11/1");
            jalaliMoment(m).subtract(7, "jmonth").format(jf).should.be.equal("1392/6/1");
            jalaliMoment(m).subtract(12, "jmonth").format(jf).should.be.equal("1392/1/1");
            jalaliMoment(m).subtract(13, "jmonth").format(jf).should.be.equal("1391/12/1");
            jalaliMoment(m).subtract(25, "jmonth").format(jf).should.be.equal("1390/12/1");

            m = jalaliMoment("1393/1/10", jf);
            jalaliMoment(m).subtract(1, "jmonth").format(jf).should.be.equal("1392/12/10");
            jalaliMoment(m).subtract(2, "jmonth").format(jf).should.be.equal("1392/11/10");
            jalaliMoment(m).subtract(7, "jmonth").format(jf).should.be.equal("1392/6/10");
            jalaliMoment(m).subtract(12, "jmonth").format(jf).should.be.equal("1392/1/10");
            jalaliMoment(m).subtract(13, "jmonth").format(jf).should.be.equal("1391/12/10");
            jalaliMoment(m).subtract(25, "jmonth").format(jf).should.be.equal("1390/12/10");
        });
    });

    describe(".jIsLeapYear", function() {
        it("should return true for Jalaali leap years and false otherwise", function() {
            jalaliMoment.jIsLeapYear(1391).should.be.equal(true);
            jalaliMoment.jIsLeapYear(1392).should.be.equal(false);
            jalaliMoment.jIsLeapYear(1393).should.be.equal(false);
            jalaliMoment.jIsLeapYear(1394).should.be.equal(false);
            jalaliMoment.jIsLeapYear(1395).should.be.equal(true);
            jalaliMoment.jIsLeapYear(1396).should.be.equal(false);
            jalaliMoment.jIsLeapYear(1397).should.be.equal(false);
            jalaliMoment.jIsLeapYear(1398).should.be.equal(false);
            jalaliMoment.jIsLeapYear(1399).should.be.equal(true);
            jalaliMoment.jIsLeapYear(1400).should.be.equal(false);
            jalaliMoment.jIsLeapYear(1401).should.be.equal(false);
            jalaliMoment.jIsLeapYear(1402).should.be.equal(false);
            jalaliMoment.jIsLeapYear(1403).should.be.equal(true);
            jalaliMoment.jIsLeapYear(1404).should.be.equal(false);
        });
    });

    describe(".unix", function () {
        it("should create a jalaliMoment with unix epoch", function () {
            var unix = jalaliMoment("1360/5/26", "jYYYY/jM/jD").unix();
            jalaliMoment.unix(unix).format("jYYYY/jM/jD").should.be.equal("1360/5/26");
        });
    });
    describe("#isSame", function () {
        it("should work correctly for same year", function () {
            var m1 = jalaliMoment("2016-02-04", "YYYY-MM-DD");
            var m2 = jalaliMoment("2016-01-01", "YYYY-MM-DD");
            var m3 = jalaliMoment("2015-12-31", "YYYY-MM-DD");
            var m4 = jalaliMoment("2017-01-01", "YYYY-MM-DD");
            m1.isSame(m2, "year").should.be.equal(true);
            m1.isSame(m3, "year").should.be.equal(false);
            m1.isSame(m4, "year").should.be.equal(false);
            m2.isSame(m3, "year").should.be.equal(false);
            m2.isSame(m4, "year").should.be.equal(false);
            m3.isSame(m4, "year").should.be.equal(false);
            m1.isSame(jalaliMoment("2016-02-04", "YYYY-MM-DD"), "day").should.be.equal(true);
        });

        it("should work correctly for same month", function () {
            var m1 = jalaliMoment("2016-02-04", "YYYY-MM-DD");
            var m2 = jalaliMoment("2016-02-01", "YYYY-MM-DD");
            var m3 = jalaliMoment("2016-01-01", "YYYY-MM-DD");
            var m4 = jalaliMoment("2016-03-01", "YYYY-MM-DD");
            m1.isSame(m2, "month").should.be.equal(true);
            m1.isSame(m3, "month").should.be.equal(false);
            m1.isSame(m4, "month").should.be.equal(false);
            m2.isSame(m3, "month").should.be.equal(false);
            m2.isSame(m4, "month").should.be.equal(false);
            m3.isSame(m4, "month").should.be.equal(false);
            m1.isSame(jalaliMoment("2016-02-04", "YYYY-MM-DD"), "day").should.be.equal(true);
        });

        it("should work correctly for same day", function () {
            var m1 = jalaliMoment("2016-02-04 06:00", "YYYY-MM-DD HH:mm");
            var m2 = jalaliMoment("2016-02-04 07:00", "YYYY-MM-DD HH:mm");
            var m3 = jalaliMoment("2016-02-03 06:00", "YYYY-MM-DD HH:mm");
            var m4 = jalaliMoment("2016-02-05 06:00", "YYYY-MM-DD HH:mm");
            m1.isSame(m2, "day").should.be.equal(true);
            m1.isSame(m3, "day").should.be.equal(false);
            m1.isSame(m4, "day").should.be.equal(false);
            m2.isSame(m3, "day").should.be.equal(false);
            m2.isSame(m4, "day").should.be.equal(false);
            m3.isSame(m4, "day").should.be.equal(false);
        });

        it("should work correctly for same jyear", function () {
            var m1 = jalaliMoment("1394/11/15", "jYYYY/jMM/jDD");
            var m2 = jalaliMoment("1394/01/01", "jYYYY/jMM/jDD");
            var m3 = jalaliMoment("1393/11/15", "jYYYY/jMM/jDD");
            var m4 = jalaliMoment("1395/11/15", "jYYYY/jMM/jDD");
            m1.isSame(m2, "jyear").should.be.equal(true);
            m1.isSame(m3, "jyear").should.be.equal(false);
            m1.isSame(m4, "jyear").should.be.equal(false);
            m2.isSame(m3, "jyear").should.be.equal(false);
            m2.isSame(m4, "jyear").should.be.equal(false);
            m3.isSame(m4, "jyear").should.be.equal(false);
        });

        it("should work correctly for same jmonth", function () {
            var m1 = jalaliMoment("1394/11/15", "jYYYY/jMM/jDD");
            var m2 = jalaliMoment("1394/11/01", "jYYYY/jMM/jDD");
            var m3 = jalaliMoment("1394/10/15", "jYYYY/jMM/jDD");
            var m4 = jalaliMoment("1394/12/15", "jYYYY/jMM/jDD");
            m1.isSame(m2, "jmonth").should.be.equal(true);
            m1.isSame(m3, "jmonth").should.be.equal(false);
            m1.isSame(m4, "jmonth").should.be.equal(false);
            m2.isSame(m3, "jmonth").should.be.equal(false);
            m2.isSame(m4, "jmonth").should.be.equal(false);
            m3.isSame(m4, "jmonth").should.be.equal(false);
        });
        it("it absolutely should work correctly for same jday", function () {
            var m1 = jalaliMoment("2016-02-04 06:00", "YYYY-MM-DD HH:mm");
            var m2 = jalaliMoment("2016-02-04 07:00", "YYYY-MM-DD HH:mm");
            var m3 = jalaliMoment("2016-02-03 06:00", "YYYY-MM-DD HH:mm");
            var m4 = jalaliMoment("2016-02-05 06:00", "YYYY-MM-DD HH:mm");
            m1.isSame(m2, "jday").should.be.equal(true);
            m1.isSame(m3, "jday").should.be.equal(false);
            m1.isSame(m4, "jday").should.be.equal(false);
            m2.isSame(m3, "jday").should.be.equal(false);
            m2.isSame(m4, "jday").should.be.equal(false);
            m3.isSame(m4, "jday").should.be.equal(false);
        });
    });
    describe("#parse persian date", function (){
        it("fill date with another locale", function () {
            jalaliMoment.locale("en");
            var m1 = jalaliMoment.from("1367/11/04", "fa", "YYYY/MM/DD");
            m1.format("jYYYY/jMM/jDD").should.be.equal("1367/11/04");
            m1.format("YYYY/MM/DD").should.be.equal("1989/01/24");
            var m2 = jalaliMoment.from("11/1367/04", "fa", "MM/YYYY/DD");
            m1.format("YYYY/MM/DD").should.be.equal("1989/01/24");
        });
    });
    describe("#switch calendar systems", function (){
        it("gregorian is default system", function () {
            var m1 = jalaliMoment("1989/01/24","YYYY/MM/DD");
            m1.format("jYYYY/jMM/jDD").should.be.equal("1367/11/04");
            m1.format("YYYY/MM/DD").should.be.equal("1989/01/24");
            // jalaliMoment().isBetween(jalaliMoment().subtract(1, "day"), jalaliMoment().add(1, "day"), "day", "[]").should.be.equal(true);
            // jalaliMoment().subtract(2, "d").isBetween(jalaliMoment().subtract(1, "day"), jalaliMoment().add(1, "day"), "day", "[]").should.be.equal(false);
        });
        it("change locale globally should change the whole instances system", function () {
            jalaliMoment.locale("fa");
            var m1 = jalaliMoment("1367/11/04","YYYY/MM/DD");

            m1.format("YYYY/MM/DD").should.be.equal("1367/11/04");
            m1.locale("en");
            m1.format("YYYY/MM/DD").should.be.equal("1989/01/24");
        });
        it("test changeSystemByItsLocale ", function () {
            var m1 = jalaliMoment("1367/11/04","jYYYY/jMM/jDD");
            m1.locale("fa");
            m1.format("YYYY/MM/DD").should.be.equal("1367/11/04");
            m1.locale("en");
            m1.format("YYYY/MM/DD").should.be.equal("1989/01/24");
        });
    });
    describe("#clone should not affect on calendar system", function () {
        it("instance locale and clone", function () {
            jalaliMoment.locale("en");
            var m1 = jalaliMoment("1367/11/04","jYYYY/jMM/jDD");
            m1.locale("fa");
            m1.format("YYYY/MM/DD").should.be.equal("1367/11/04");
            var m2 = m1.clone();
            m2.subtract(1, "day");
            m2.format("YYYY/MM/DD").should.be.equal("1367/11/03");
            m2.subtract(1, "day");
            m2.clone().format("YYYY/MM/DD").should.be.equal("1367/11/02");
        });
        it("global locale and clone", function () {
            jalaliMoment.locale("fa");
            var m1 = jalaliMoment("1367/11/04","YYYY/MM/DD");
            m1.format("YYYY/MM/DD").should.be.equal("1367/11/04");
            var m2 = m1.clone();
            m2.format("YYYY/MM/DD").should.be.equal("1367/11/04");
            m2.subtract(1, "day");
            m2.clone().format("YYYY/MM/DD").should.be.equal("1367/11/03");
        });
    });
    describe("add or subtract when global locale is not as we expected", function () {
        it("instance locale and clone", function () {
            jalaliMoment.locale("en");

            var m1 = jalaliMoment("1395/12/30","jYYYY/jMM/jDD").locale("fa");
            m1.format("YYYY/MM/DD").should.be.equal("1395/12/30");

            m1.subtract(1, "month");
            m1.format("YYYY/MM/DD").should.be.equal("1395/11/30");

            m1.subtract(1, "year");
            m1.format("YYYY/MM/DD").should.be.equal("1394/11/30");
        });
    });
    describe("test utc time", function () {
        it("utc jalaliMoment", function () {
            jalaliMoment.locale("en");
            var m1 = jalaliMoment("1395/12/30", "jYYYY/jMM/jDD", "fa", true).locale("fa");
            m1.format("YYYY/MM/DD").should.be.equal("1395/12/30");
        });
    });
    describe("test locale data", function () {
        it("en locale", function () {
            jalaliMoment().localeData().jMonths().should.have.lengthOf(12);
            jalaliMoment().localeData().jMonthsShort().should.have.lengthOf(12);
        });
        it("fa locale", function () {
            jalaliMoment().locale("fa").localeData().jMonths().should.have.lengthOf(12);
            jalaliMoment().locale("fa").localeData().jMonthsShort().should.have.lengthOf(12);
        });
    });
    describe("getting year and month in both locale", function () {
        it("en locale", function () {
            jalaliMoment.locale("en");
            var now = jalaliMoment();
            now.locale("en");
            var month = +now.format("M");
            var year = +now.format("YYYY");
            now.year().should.be.equal(year);
            now.month().should.be.equal(month - 1);
        });
        it("fa locale", function () {
            jalaliMoment.locale("en");
            var now = jalaliMoment();
            now.locale("fa");
            var month = +now.format("M");
            var year = +now.format("YYYY");
            now.year().should.be.equal(year);
            now.month().should.be.equal(month - 1);
        });
    });
    describe("getting day of year in both locale", function () {
        jalaliMoment.locale("en");
        var now = jalaliMoment();
        it("day of year with en locale", function () {
            now.locale("en");
            var dayOfYear = +now.format("DDDD");
            now.dayOfYear().should.be.equal(dayOfYear);
        });
        it("day of year with fa locale", function () {
            now.locale("fa");
            var dayOfYear = +now.format("DDDD");
            now.dayOfYear().should.be.equal(dayOfYear);
        });
    });
    describe("getting week fa locale", function () {
        jalaliMoment.locale("en");
        var now = jalaliMoment();
        now.locale("fa");
        it("week with fa locale", function () {
            now.week().should.be.equal(now.jWeek());
        });
        it("week year with fa locale", function () {
            now.weekYear().should.be.equal(now.jWeekYear());
        });
    });
    describe("getting week fa locale", function () {
        jalaliMoment.locale("en");
        var now = jalaliMoment();
        now.locale("fa");
        it("week with fa locale", function () {
            now.week().should.be.equal(now.jWeek());
        });
        it("week year with fa locale", function () {
            now.weekYear().should.be.equal(now.jWeekYear());
        });
    });
    describe("getting from now with fa locale", function () {
        it("just now", function () {
            jalaliMoment.locale("fa");
            var now = jalaliMoment();
            now.locale("fa");
            now.fromNow().should.be.equal("چند ثانیه پیش");
        });
        it("10 seconds ago", function () {
            jalaliMoment.locale("fa");
            var now = jalaliMoment();
            now.locale("fa");
            now.subtract(10, "s");
            now.fromNow().should.be.equal("چند ثانیه پیش");
        });
        it("100 seconds ago", function () {
            jalaliMoment.locale("fa");
            var now = jalaliMoment();
            now.locale("fa");
            now.subtract(100, "s");
            now.fromNow().should.be.equal("2 دقیقه پیش");
        });
        it("5 days ago", function () {
            jalaliMoment.locale("fa");
            var now = jalaliMoment();
            now.locale("fa");
            now.subtract(5, "d");
            now.fromNow().should.be.equal("5 روز پیش");
        });
        it("1 month ago", function () {
            jalaliMoment.locale("fa");
            var now = jalaliMoment();
            now.locale("fa");
            now.subtract(1, "months");
            now.fromNow().should.be.equal("1 ماه پیش");
        });
        it("3 years ago", function () {
            jalaliMoment.locale("fa");
            var now = jalaliMoment();
            now.locale("fa");
            now.subtract(3, "year");
            now.fromNow().should.be.equal("3 سال پیش");
        });
    });
    describe("use gregorian calendar parser in 'fa' locale", function () {
        it("use jalali calendar when useGregorianParser is false in fa locale", function () {
            jalaliMoment.locale("fa", { useGregorianParser: false });
            jalaliMoment("1370-10-17").format("YYYY-MM-DD").should.be.equal("1370-10-17");
        });
        it("parse using gregorian calendar in fa locale", function () {
            jalaliMoment.locale("fa", { useGregorianParser: true });
            jalaliMoment("2019-01-17T08:19:19.975Z").format("YYYY-MM-DD").should.be.equal("1397-10-27");
            jalaliMoment("2019-02-23").format("YYYY-MM-DD").should.be.equal("1397-12-04");
        });
    });

    describe("jalaliMoment toISOString", function () {
        jalaliMoment.locale("en");
        it("toISOString(false) with 00:00 time and GMT+ timezone should decrease day", function () {
            const date = jalaliMoment("2020-11-23T00:00:00.000+03:30");
            const isoString = date.toISOString();
            const dateWithoutTimezone = jalaliMoment(isoString.split('T')[0]);
            date.date().should.be.equal(dateWithoutTimezone.date() + 1);
            date.format("YYYY-MM-DD").should.not.equal(dateWithoutTimezone.format("YYYY-MM-DD"));
        });
        
        it("toISOString(true) with 00:00 time and GMT+ timezone should preserve date", function () {
            const date = jalaliMoment("2020-11-23T00:00:00.000+03:30");
            const isoString = date.toISOString(true);
            const dateWithoutTimezone = jalaliMoment(isoString.split('T')[0]);
            date.format("YYYY-MM-DD").should.be.equal(dateWithoutTimezone.format("YYYY-MM-DD"));
        });
    });

    describe("compare jalaliMoment and moment", function () {
        it("utc should be the same", function () {
            const a = jalaliMoment.utc("09:30", "HH:mm");
            const b = moment.utc("09:30", "HH:mm");
            a.locale('en').format('YYMMDD-HH:mm').should.be.equal(b.format('YYMMDD-HH:mm'));
        });
    });
    describe("jmoment vs moment", function () {
        it("ISO_8601", function () {
            //https://github.com/fingerpich/jalali-moment/issues/70
            const d1 = moment('2019-10-26', moment.ISO_8601).format();
            const d2 = jalaliMoment('2019-10-26', moment.ISO_8601).format();
            d1.should.be.equal(d2);
        });
        it("diff locale fa", function () {
            //https://github.com/fingerpich/jalali-moment/issues/78
            const testDates = [
                {
                    d1: jalaliMoment("2020-03-20").locale("fa"), //1399/1/1
                    d2: jalaliMoment("2021-03-21").locale("fa"), //1400/1/1
                    diff: "year",
                    result: -1,
                },
                {
                    d1: jalaliMoment("2021-03-21").locale("fa"),
                    d2: jalaliMoment("2020-03-20").locale("fa"),
                    diff: "year",
                    result: 1,
                },
                {
                    d1: jalaliMoment("2020-03-21").locale("fa"), //1399/1/2
                    d2: jalaliMoment("2021-03-21").locale("fa"), //1400/1/1
                    diff: "year",
                    result: 0,
                },
                {
                    d1: jalaliMoment("2020-03-20").locale("fa"),
                    d2: jalaliMoment("2021-03-21").locale("fa"),
                    diff: "month",
                    result: -12,
                },
                {
                    d1: jalaliMoment("2021-03-21").locale("fa"),
                    d2: jalaliMoment("2020-03-20").locale("fa"),
                    diff: "month",
                    result: 12,
                },
                {
                    d1: jalaliMoment("2020-07-21").locale("fa"), //1399/04/31
                    d2: jalaliMoment("2020-06-21").locale("fa"), //1399/04/01
                    diff: "month",
                    result: 0,
                },
                {
                    d1: jalaliMoment("2020-07-21").locale("fa"), //1399/04/31
                    d2: jalaliMoment("2020-06-20").locale("fa"), //1399/03/31
                    diff: "month",
                    result: 1,
                },
                {
                    d1: jalaliMoment("2021-03-21").locale("fa"),
                    d2: jalaliMoment("2020-03-20").locale("fa"),
                    diff: "day",
                    result: 366, //1399 is leap year
                },
                {
                    d1: jalaliMoment("2020-07-21").locale("fa"), //1399/04/31
                    d2: jalaliMoment("2020-06-20").locale("fa"), //1399/03/31
                    diff: "day",
                    result: 31,
                },
            ]

            testDates.forEach((date) => {
                date.d1.diff(date.d2, date.diff).should.be.equal(date.result)
            })
        });
    });
});
 ``