var assert = require('assert');

var Fraction = require('../fraction');

var tests = [{
    set: "foo",
    expectError: Fraction.InvalidParameter
  }, {
    set: " 123",
    expectError: Fraction.InvalidParameter
  }, {
    set: 0,
    expect: 0
  }, {
    set: .2,
    expect: "0.2"
  }, {
    set: .333,
    expect: "0.333"
  }, {
    set: 1.1,
    expect: "1.1"
  }, {
    set: 1.2,
    expect: "1.2"
  }, {
    set: 1.3,
    expect: "1.3"
  }, {
    set: 1.4,
    expect: "1.4"
  }, {
    set: 1.5,
    expect: "1.5"
  }, {
    set: 2.555,
    expect: "2.555"
  }, {
    set: " - ",
    expectError: Fraction.InvalidParameter
  }, {
    set: ".5",
    expect: "0.5"
  }, {
    set: "-.5",
    expect: "-0.5"
  }, {
    set: "123",
    expect: "123"
  }, {
    set: "-123",
    expect: "-123"
  }, {
    set: "123.4",
    expect: "123.4"
  }, {
    set: "-123.4",
    expect: "-123.4"
  }, {
    set: "123.",
    expect: "123"
  }, {
    set: "-123.",
    expect: "-123"
  }, {
    set: "123.4(56)",
    expect: "123.4(56)"
  }, {
    set: "-123.4(56)",
    expect: "-123.4(56)"
  }, {
    set: "123.(4)",
    expect: "123.(4)"
  }, {
    set: "-123.(4)",
    expect: "-123.(4)"
  }, {
    set: "0/0",
    expectError: Fraction.DivisionByZero
  }, {
    set: "9/0",
    expectError: Fraction.DivisionByZero
  }, {
    label: "0/1+0/1",
    set: "0/1",
    param: "0/1",
    expect: "0"
  }, {
    label: "1/9+0/1",
    set: "1/9",
    param: "0/1",
    expect: "0.(1)"
  }, {
    set: "123/456",
    expect: "0.269(736842105263157894)"
  }, {
    set: "-123/456",
    expect: "-0.269(736842105263157894)"
  }, {
    set: "19 123/456",
    expect: "19.269(736842105263157894)"
  }, {
    set: "-19 123/456",
    expect: "-19.269(736842105263157894)"
  }, {
    set: "123.(22)123",
    expectError: Fraction.InvalidParameter
  }, {
    set: "+33.3(3)",
    expect: "33.(3)"
  }, {
    set: "3.'09009'",
    expect: "3.(09009)"
  }, {
    set: "123.(((",
    expectError: Fraction.InvalidParameter
  }, {
    set: "123.((",
    expectError: Fraction.InvalidParameter
  }, {
    set: "123.()",
    expectError: Fraction.InvalidParameter
  }, {
    set: null,
    expect: "0" // I would say it's just fine
  }, {
    set: [22, 7],
    expect: '3.(142857)' // We got Pi! - almost ;o
  }, {
    set: "355/113",
    expect: "3.(1415929203539823008849557522123893805309734513274336283185840707964601769911504424778761061946902654867256637168)" // Yay, a better PI
  }, {
    set: "3 1/7",
    expect: '3.(142857)'
  }, {
    set: [36, -36],
    expect: "-1"
  }, {
    set: "9/12",
    expect: "0.75"
  }, {
    set: "0.09(33)",
    expect: "0.09(3)"
  }, {
    set: 1 / 2,
    expect: "0.5"
  }, {
    set: 1 / 3,
    expect: "0.(3)"
  }, {
    set: "0.'3'",
    expect: "0.(3)"
  }, {
    set: "0.00002",
    expect: "0.00002"
  }, {
    set: 7 / 8,
    expect: "0.875"
  }, {
    set: 0.003,
    expect: "0.003"
  }, {
    set: 4,
    expect: "4"
  }, {
    set: -99,
    expect: "-99"
  }, {
    set: "-92332.1192",
    expect: "-92332.1192"
  }, {
    set: '88.92933(12111)',
    expect: "88.92933(12111)"
  }, {
    set: '-192322.823(123)',
    expect: "-192322.8(231)"
  }, {
    label: "-99.12 % 0.09(34)",
    set: '-99.12',
    fn: "mod",
    param: "0.09(34)",
    expect: "-0.07(95)"
  }, {
    label: "0.4 / 0.1",
    set: .4,
    fn: "div",
    param: ".1",
    expect: "4"
  }, {
    label: "1 / -.1",
    set: 1,
    fn: "div",
    param: "-.1",
    expect: "-10"
  }, {
    label: "1 - (-1)",
    set: 1,
    fn: "sub",
    param: "-1",
    expect: "2"
  }, {
    label: "1 + (-1)",
    set: 1,
    fn: "add",
    param: "-1",
    expect: "0"
  }, {
    label: "-187 % 12",
    set: '-187',
    fn: "mod",
    param: "12",
    expect: "-7"
  }, {
    label: "Negate by 99 * -1",
    set: '99',
    fn: "mul",
    param: "-1",
    expect: "-99"
  }, {
    set: [20,-5],
    expect: "-4",
    fn: "toFraction",
    param: true
  }, {
    set: [-10,-7],
    expect: "1 3/7",
    fn: "toFraction",
    param: true
  }, {
    set: [21,-6],
    expect: "-3 1/2",
    fn: "toFraction",
    param: true
  }, {
    set: "10/78",
    expect: "5/39",
    fn: "toFraction",
    param: true
  }, {
    set: "0/91",
    expect: "0",
    fn: "toFraction",
    param: true
  }, {
    set: "-0/287",
    expect: "0",
    fn: "toFraction",
    param: true
  }, {
    set: "-5/20",
    expect: "-1/4",
    fn: "toFraction",
    param: true
  }, {
    set: "42/9",
    expect: "4 2/3",
    fn: "toFraction",
    param: true
  }, {
    set: "71/23",
    expect: "3 2/23",
    fn: "toFraction",
    param: true
  }, {
    set: "6/3",
    expect: "2",
    fn: "toFraction",
    param: true
  }, {
    set: "28/4",
    expect: "7",
    fn: "toFraction",
    param: true
  }, {
    set: "105/35",
    expect: "3",
    fn: "toFraction",
    param: true
  }, {
    set: "4/6",
    expect: "2/3",
    fn: "toFraction",
    param: true
  }, {
    label: "99.(9) + 66",
    set: '99.(999999)',
    fn: "add",
    param: "66",
    expect: "166"
  }, {
    label: "-82.124 / 66.(3)",
    set: '-82.124',
    fn: "div",
    param: "66.(3)",
    expect: "-1.238(050251256281407035175879396984924623115577889447236180904522613065326633165829145728643216080402010)"
  }, {
    label: "100 - .91",
    set: '100',
    fn: "sub",
    param: ".91",
    expect: "99.09"
  }, {
    label: "381.(33411) % 11.119(356)",
    set: '381.(33411)',
    fn: "mod",
    param: "11.119(356)",
    expect: "3.275(997225017295217)"
  }, {
    label: "13/26 mod 1",
    set: '13/26',
    fn: "mod",
    param: "1.000",
    expect: "0.5"
  }, {
    label: "381.(33411) % 1", // Extract fraction part of a number
    set: '381.(33411)',
    fn: "mod",
    param: "1",
    expect: "0.(33411)"
  }, {
    label: "-222/3",
    set: {
      n: 3,
      d: 222,
      s: -1
    },
    fn: "inverse",
    param: null,
    expect: "-74"
  }, {
    label: "inverse",
    set: 1 / 2,
    fn: "inverse",
    param: null,
    expect: "2"
  }, {
    label: "abs(-222/3)",
    set: {
      n: -222,
      d: 3
    },
    fn: "abs",
    param: null,
    expect: "74"
  }, {
    label: "9 % -2",
    set: 9,
    fn: "mod",
    param: "-2",
    expect: "1"
  }, {
    label: "-9 % 2",
    set: '-9',
    fn: "mod",
    param: "-2",
    expect: "-1"
  }, {
    label: "1 / 195312500",
    set: '1',
    fn: "div",
    param: "195312500",
    expect: "0.00000000512"
  }, {
    label: "10 / 0",
    set: 10,
    fn: "div",
    param: 0,
    expectError: Fraction.DivisionByZero
  }, {
    label: "-3 / 4",
    set: [-3, 4],
    fn: "inverse",
    param: null,
    expect: "-1.(3)"
  }, {
    label: "-19.6",
    set: [-98, 5],
    fn: "equals",
    param: '-19.6',
    expect: "true" // actually, we get a real bool but we call toString() in the test below
  }, {
    label: "-19.6",
    set: [98, -5],
    fn: "equals",
    param: '-19.6',
    expect: "true"
  }, {
    label: "99/88",
    set: [99, 88],
    fn: "equals",
    param: [88, 99],
    expect: "false"
  }, {
    label: "99/88",
    set: [99, -88],
    fn: "equals",
    param: [9, 8],
    expect: "false"
  }, {
    label: "12.5",
    set: 12.5,
    fn: "add",
    param: 0,
    expect: "12.5"
  }, {
    label: "0/1 -> 1/0",
    set: 0,
    fn: "inverse",
    param: null,
    expectError: Fraction.DivisionByZero
  }, {
    label: "abs(-100.25)",
    set: -100.25,
    fn: "abs",
    param: null,
    expect: "100.25"
  }, {
    label: "0.022222222",
    set: '0.0(22222222)',
    fn: "abs",
    param: null,
    expect: "0.0(2)"
  }, {
    label: "1.5 | 100.5",
    set: 100.5,
    fn: "divisible",
    param: '1.5',
    expect: "true"
  }, {
    label: "1.5 | 100.6",
    set: 100.6,
    fn: "divisible",
    param: 1.6,
    expect: "false"
  }, {
    label: "(1/6) | (2/3)", // == 4
    set: [2, 3],
    fn: "divisible",
    param: [1, 6],
    expect: "true"
  }, {
    label: "(1/6) | (2/5)",
    set: [2, 5],
    fn: "divisible",
    param: [1, 6],
    expect: "false"
  }, {
    label: "0 | (2/5)",
    set: [2, 5],
    fn: "divisible",
    param: 0,
    expect: "false"
  }, {
    label: "6 | 0",
    set: 0,
    fn: "divisible",
    param: 6,
    expect: "true"
  }, {
    label: "fmod(4.55, 0.05)", // http://phpjs.org/functions/fmod/ (comment section)
    set: 4.55,
    fn: "mod",
    param: 0.05,
    expect: "0"
  }, {
    label: "fmod(99.12, 0.4)",
    set: 99.12,
    fn: "mod",
    param: "0.4",
    expect: "0.32"
  }, {
    label: "fmod(fmod(1.0,0.1))", // http://stackoverflow.com/questions/4218961/why-fmod1-0-0-1-1
    set: 1.0,
    fn: "mod",
    param: 0.1,
    expect: "0"
  }, {
    label: "bignum",
    set: [5385020324, 1673196525],
    fn: "add",
    param: 0,
    expect: "3.(218402765927331817761216065160068390651241640607638723132060054929889362518249313241909822876305579226564554334106090735515960983722459021960973771446244188201382978607369507894477607763379738073505740755707103802405996510182807127214180653405313521076073236525518124656635896372065439234641011461579505730804694326029633608042545988433725679653799185364671971213901487154953301137175144443955858681932177692037700114157241630656625945359287666462252543824760812242303694719901477203940523364402755976319039988443676692431571957753139608032594975655952907265331548545978482712901881026796897035152520412986155347172980771042421331827712228842932840779118878459301127224131666183086293464540873344211613157635502500221843336663635492549209065563891247024912390372075390247418784233967973367623387814530633214170702392535748303684768888699431168134896765937282830538988837548536027469935129108638329260216459031911986549219016576669019797300858008894083735919783840096129771725410438561602917505461589456743582467098418101244861239476934725285781955589466694595244871190489712498058170423226285388083745870796617868902160193047257255091418505067717613147684489722449070948195998673855720564564285118868508288349451359277715449474771052372344605485001231400477597812366960300733352288070285108917495510576678970810078630781282551372738477328597129377853566842663625541536431292791502779388093696883574390641290627829865950743592418111195874017249707113753418774282955195594850999346893814520682201392929620147280666866075400198431562006740361835260206508019134213776830548939850326308799)"
  }, {
    label: "ceil(0.4)",
    set: 0.4,
    fn: "ceil",
    param: null,
    expect: "1"
  }, {
    label: "ceil(0.5)",
    set: 0.5,
    fn: "ceil",
    param: null,
    expect: "1"
  }, {
    label: "ceil(0.23, 2)",
    set: 0.23,
    fn: "ceil",
    param: 2,
    expect: "0.23"
  }, {
    label: "ceil(0.6)",
    set: 0.6,
    fn: "ceil",
    param: null,
    expect: "1"
  }, {
    label: "ceil(-0.4)",
    set: -0.4,
    fn: "ceil",
    param: null,
    expect: "0"
  }, {
    label: "ceil(-0.5)",
    set: -0.5,
    fn: "ceil",
    param: null,
    expect: "0"
  }, {
    label: "ceil(-0.6)",
    set: -0.6,
    fn: "ceil",
    param: null,
    expect: "0"
  }, {
    label: "floor(0.4)",
    set: 0.4,
    fn: "floor",
    param: null,
    expect: "0"
  }, {
    label: "floor(0.4, 1)",
    set: 0.4,
    fn: "floor",
    param: 1,
    expect: "0.4"
  }, {
    label: "floor(0.5)",
    set: 0.5,
    fn: "floor",
    param: null,
    expect: "0"
  }, {
    label: "floor(0.6)",
    set: 0.6,
    fn: "floor",
    param: null,
    expect: "0"
  }, {
    label: "floor(-0.4)",
    set: -0.4,
    fn: "floor",
    param: null,
    expect: "-1"
  }, {
    label: "floor(-0.5)",
    set: -0.5,
    fn: "floor",
    param: null,
    expect: "-1"
  }, {
    label: "floor(-0.6)",
    set: -0.6,
    fn: "floor",
    param: null,
    expect: "-1"
  }, {
    label: "round(0.4)",
    set: 0.4,
    fn: "round",
    param: null,
    expect: "0"
  }, {
    label: "round(0.5)",
    set: 0.5,
    fn: "round",
    param: null,
    expect: "1"
  }, {
    label: "round(0.5, 1)",
    set: 0.5,
    fn: "round",
    param: 1,
    expect: "0.5"
  }, {
    label: "round(0.6)",
    set: 0.6,
    fn: "round",
    param: null,
    expect: "1"
  }, {
    label: "round(-0.4)",
    set: -0.4,
    fn: "round",
    param: null,
    expect: "0"
  }, {
    label: "round(-0.5)",
    set: -0.5,
    fn: "round",
    param: null,
    expect: "0"
  }, {
    label: "round(-0.6)",
    set: -0.6,
    fn: "round",
    param: null,
    expect: "-1"
  }, {
    label: "17402216385200408/5539306332998545",
    set: [17402216385200408, 5539306332998545],
    fn: "add",
    param: 0,
    expect: "3.14158765358987"
  }, {
    label: "99+1",
    set: [99, 1],
    fn: "add",
    param: 1,
    expect: "100"
  }, {
    label: "gcd(5/8, 3/7)",
    set: [5, 8],
    fn: "gcd",
    param: [3, 7],
    expect: "0.017(857142)" // == 1/56
  }, {
    label: "gcd(52, 39)",
    set: 52,
    fn: "gcd",
    param: 39,
    expect: "13"
  }, {
    label: "gcd(51357, 3819)",
    set: 51357,
    fn: "gcd",
    param: 3819,
    expect: "57"
  }, {
    label: "gcd(841, 299)",
    set: 841,
    fn: "gcd",
    param: 299,
    expect: "1"
  }, {
    label: "gcd(2/3, 7/5)",
    set: [2, 3],
    fn: "gcd",
    param: [7, 5],
    expect: "0.0(6)" // == 1/15
  }, {
    label: "lcm(-3, 3)",
    set: -3,
    fn: "lcm",
    param: 3,
    expect: "3"
  }, {
    label: "lcm(3,-3)",
    set: 3,
    fn: "lcm",
    param: -3,
    expect: "3"
  }, {
    label: "lcm(0,3)",
    set: 0,
    fn: "lcm",
    param: 3,
    expect: "0"
  }, {
    label: "lcm(3, 0)",
    set: 3,
    fn: "lcm",
    param: 0,
    expect: "0"
  }, {
    label: "lcm(0, 0)",
    set: 0,
    fn: "lcm",
    param: 0,
    expect: "0"
  }, {
    label: "lcm(200, 333)",
    set: 200,
    fn: "lcm",
    param: 333, expect: "66600"},
  {
    label: "1 + -1",
    set: 1,
    fn: "add",
    param: -1,
    expect: "0"
  }, {
    label: "3/10+3/14",
    set: "3/10",
    fn: "add",
    param: "3/14",
    expect: "0.5(142857)"
  }, {
    label: "3/10-3/14",
    set: "3/10",
    fn: "sub",
    param: "3/14",
    expect: "0.0(857142)"
  }, {
    label: "3/10*3/14",
    set: "3/10",
    fn: "mul",
    param: "3/14",
    expect: "0.06(428571)"
  }, {
    label: "3/10 / 3/14",
    set: "3/10",
    fn: "div",
    param: "3/14",
    expect: "1.4"
  }, {
    label: "1-2",
    set: "1",
    fn: "sub",
    param: "2",
    expect: "-1"
  }, {
    label: "1--1",
    set: "1",
    fn: "sub",
    param: "-1",
    expect: "2"
  }, {
    label: "0/1*1/3",
    set: "0/1",
    fn: "mul",
    param: "1/3",
    expect: "0"
  }, {
    label: "3/10 * 8/12",
    set: "3/10",
    fn: "mul",
    param: "8/12",
    expect: "0.2"
  }, {
    label: ".5+5",
    set: ".5",
    fn: "add",
    param: 5, expect: "5.5"},
  {
    label: "10/12-5/60",
    set: "10/12",
    fn: "sub",
    param: "5/60",
    expect: "0.75"
  }, {
    label: "10/15 / 3/4",
    set: "10/15",
    fn: "div",
    param: "3/4",
    expect: "0.(8)"
  }, {
    label: "1/4 + 3/8",
    set: "1/4",
    fn: "add",
    param: "3/8",
    expect: "0.625"
  }, {
    label: "2-1/3",
    set: "2",
    fn: "sub",
    param: "1/3",
    expect: "1.(6)"
  }, {
    label: "5*6",
    set: "5",
    fn: "mul",
    param: 6,
    expect: "30"
  }, {
    label: "1/2-1/5",
    set: "1/2",
    fn: "sub",
    param: "1/5",
    expect: "0.3"
  }, {
    label: "1/2-5",
    set: "1/2",
    fn: "add",
    param: -5,
    expect: "-4.5"
  }, {
    label: "1*-1",
    set: "1",
    fn: "mul",
    param: -1,
    expect: "-1"
  }, {
    label: "5/10",
    set: 5.0,
    fn: "div",
    param: 10,
    expect: "0.5"
  }, {
    label: "1/-1",
    set: "1",
    fn: "div",
    param: -1,
    expect: "-1"
  }, {
    label: "4/5 + 13/2",
    set: "4/5",
    fn: "add",
    param: "13/2",
    expect: "7.3"
  }, {
    label: "4/5 + 61/2",
    set: "4/5",
    fn: "add",
    param: "61/2",
    expect: "31.3"
  }, {
    label: "0.8 + 6.5",
    set: "0.8",
    fn: "add",
    param: "6.5",
    expect: "7.3"
  }, {
    label: "2/7 inverse",
    set: "2/7",
    fn: "inverse",
    param: null,
    expect: "3.5"
  }, {
    label: "neg 1/3",
    set: "1/3",
    fn: "neg",
    param: null,
    expect: "-0.(3)"
  }, {
    label: "1/2+1/3",
    set: "1/2",
    fn: "add",
    param: "1/3",
    expect: "0.8(3)"
  }, {
    label: "1/2+3",
    set: ".5",
    fn: "add",
    param: 3,
    expect: "3.5"
  }, {
    label: "1/2+3.14",
    set: "1/2",
    fn: "add",
    param: "3.14",
    expect: "3.64"
  }, {
    label: "3.5 < 4.1",
    set: 3.5,
    fn: "compare",
    param: 4.1,
    expect: "-1"
  }, {
    label: "3.5 > 4.1",
    set: 4.1,
    fn: "compare",
    param: 3.1,
    expect: "1"
  }, {
    label: "-3.5 > -4.1",
    set: -3.5,
    fn: "compare",
    param: -4.1,
    expect: "1"
  }, {
    label: "-3.5 > -4.1",
    set: -4.1,
    fn: "compare",
    param: -3.5,
    expect: "-1"
  }, {
    label: "4.3 == 4.3",
    set: 4.3,
    fn: "compare",
    param: 4.3,
    expect: "0"
  }, {
    label: "-4.3 == -4.3",
    set: -4.3,
    fn: "compare",
    param: -4.3,
    expect: "0"
  }, {
    label: "-4.3 < 4.3",
    set: -4.3,
    fn: "compare",
    param: 4.3,
    expect: "-1"
  }, {
    label: "4.3 == -4.3",
    set: 4.3,
    fn: "compare",
    param: -4.3,
    expect: "1"
  }, {
    label: "-0.5^-3",
    set: -0.5,
    fn: "pow",
    param: -3,
    expect: "-8"
  }, {
    label: "",
    set: -3,
    fn: "pow",
    param: -3,
    expect: "-0.(037)"
  }, {
    label: "-3",
    set: -3,
    fn: "pow",
    param: 2,
    expect: "9"
  }, {
    label: "-3",
    set: -3,
    fn: "pow",
    param: 3,
    expect: "-27"
  }, {
    label: "0^0",
    set: 0,
    fn: "pow",
    param: 0,
    expect: "1"
  }, {
    label: "2/3^7",
    set: [2, 3],
    fn: "pow",
    param: 7,
    expect: "0.(058527663465935070873342478280749885688157293095564700502972107910379515317786922725194330132601737540009144947416552354823959762231367169638774577046181984453589391860996799268404206675811614083219021490626428898033836305441243712848651120256)"
  }, {
    label: "-0.6^4",
    set: -0.6,
    fn: "pow",
    param: 4,
    expect: "0.1296"
  }, {
    label: "8128371:12394 - 8128371/12394",
    set: "8128371:12394",
    fn: "sub",
    param: "8128371/12394",
    expect: "0"
  }, {
    label: "3/4 + 1/4",
    set: "3/4",
    fn: "add",
    param: "1/4",
    expect: "1"
  }, {
    label: "1/10 + 2/10",
    set: "1/10",
    fn: "add",
    param: "2/10",
    expect: "0.3"
  }, {
    label: "5/10 + 2/10",
    set: "5/10",
    fn: "add",
    param: "2/10",
    expect: "0.7"
  }, {
    label: "18/10 + 2/10",
    set: "18/10",
    fn: "add",
    param: "2/10",
    expect: "2"
  }, {
    label: "1/3 + 1/6",
    set: "1/3",
    fn: "add",
    param: "1/6",
    expect: "0.5"
  }, {
    label: "1/3 + 2/6",
    set: "1/3",
    fn: "add",
    param: "2/6",
    expect: "0.(6)"
  }, {
    label: "3/4 / 1/4",
    set: "3/4",
    fn: "div",
    param: "1/4",
    expect: "3"
  }, {
    label: "1/10 / 2/10",
    set: "1/10",
    fn: "div",
    param: "2/10",
    expect: "0.5"
  }, {
    label: "5/10 / 2/10",
    set: "5/10",
    fn: "div",
    param: "2/10",
    expect: "2.5"
  }, {
    label: "18/10 / 2/10",
    set: "18/10",
    fn: "div",
    param: "2/10",
    expect: "9"
  }, {
    label: "1/3 / 1/6",
    set: "1/3",
    fn: "div",
    param: "1/6",
    expect: "2"
  }, {
    label: "1/3 / 2/6",
    set: "1/3",
    fn: "div",
    param: "2/6",
    expect: "1"
  }, {
    label: "3/4 * 1/4",
    set: "3/4",
    fn: "mul",
    param: "1/4",
    expect: "0.1875"
  }, {
    label: "1/10 * 2/10",
    set: "1/10",
    fn: "mul",
    param: "2/10",
    expect: "0.02"
  }, {
    label: "5/10 * 2/10",
    set: "5/10",
    fn: "mul",
    param: "2/10",
    expect: "0.1"
  }, {
    label: "18/10 * 2/10",
    set: "18/10",
    fn: "mul",
    param: "2/10",
    expect: "0.36"
  }, {
    label: "1/3 * 1/6",
    set: "1/3",
    fn: "mul",
    param: "1/6",
    expect: "0.0(5)"
  }, {
    label: "1/3 * 2/6",
    set: "1/3",
    fn: "mul",
    param: "2/6",
    expect: "0.(1)"
  }, {
    label: "5/4 - 1/4",
    set: "5/4",
    fn: "sub",
    param: "1/4",
    expect: "1"
  }, {
    label: "5/10 - 2/10",
    set: "5/10",
    fn: "sub",
    param: "2/10",
    expect: "0.3"
  }, {
    label: "9/10 - 2/10",
    set: "9/10",
    fn: "sub",
    param: "2/10",
    expect: "0.7"
  }, {
    label: "22/10 - 2/10",
    set: "22/10",
    fn: "sub",
    param: "2/10",
    expect: "2"
  }, {
    label: "2/3 - 1/6",
    set: "2/3",
    fn: "sub",
    param: "1/6",
    expect: "0.5"
  }, {
    label: "3/3 - 2/6",
    set: "3/3",
    fn: "sub",
    param: "2/6",
    expect: "0.(6)"
  }, {
    label: "0.006999999999999999",
    set: 0.006999999999999999,
    fn: "add",
    param: 0,
    expect: "0.007"
  }, {
    label: "1/7 - 1",
    set: 1 / 7,
    fn: "add",
    param: -1,
    expect: "-0.(857142)"
  }, {
    label: "0.0065 + 0.0005",
    set: 0.0065,
    fn: "add",
    param: 0.0005,
    expect: "0.007"
  }, {
    label: "6.5/.5",
    set: 6.5,
    fn: "div",
    param: .5,
    expect: "13"
  }, {
    label: "0.999999999999999999999999999",
    set: 0.999999999999999999999999999,
    fn: "sub",
    param: 1,
    expect: "0"
  }, {
    label: "0.5833333333333334",
    set: 0.5833333333333334,
    fn: "add",
    param: 0,
    expect: "0.58(3)"
  }, {
    label: "1.75/3",
    set: 1.75 / 3,
    fn: "add",
    param: 0,
    expect: "0.58(3)"
  }, {
    label: "3.3333333333333",
    set: 3.3333333333333,
    fn: "add",
    param: 0,
    expect: "3.(3)"
  }, {
    label: "4.285714285714285714285714",
    set: 4.285714285714285714285714,
    fn: "add",
    param: 0,
    expect: "4.(285714)"
  }, {
    label: "-4",
    set: -4,
    fn: "neg",
    param: 0,
    expect: "4"
  }, {
    label: "4",
    set: 4,
    fn: "neg",
    param: 0,
    expect: "-4"
  }, {
    label: "0",
    set: 0,
    fn: "neg",
    param: 0,
    expect: "0"
  }
];

describe('Fraction', function() {
  for (var i = 0; i < tests.length; i++) {

    (function(i) {
      var action;

      if (tests[i].fn) {
        action = function() {
          return new Fraction(tests[i].set)[tests[i].fn](tests[i].param).toString();
        };
      } else {
        action = function() {
          return new Fraction(tests[i].set).toString();
        };
      }

      it(String(tests[i].label || tests[i].set), function() {
          if(tests[i].expectError) {
              assert.throws(action, tests[i].expectError);
          } else {
              assert.equal(action(), tests[i].expect);
          }
      });

    })(i);
  }
});

describe('JSON', function() {

  it("Should be possible to stringify the object", function() {

    assert.equal('{"s":1,"n":14623,"d":330}', JSON.stringify(new Fraction("44.3(12)")));

    assert.equal('{"s":-1,"n":2,"d":1}', JSON.stringify(new Fraction(-1 / 2).inverse()));

  });
});

describe('Arguments', function() {

  it("Should be possible to use different kind of params", function() {

    // String
    var fraction = new Fraction("0.1");
    assert.equal("1/10", fraction.n + "/" + fraction.d);

    var fraction = new Fraction("6234/6460");
    assert.equal("3117/3230", fraction.n + "/" + fraction.d);

    // Two params
    var fraction = new Fraction(1, 2);
    assert.equal("1/2", fraction.n + "/" + fraction.d);

    // Object
    var fraction = new Fraction({n: 1, d: 3});
    assert.equal("1/3", fraction.n + "/" + fraction.d);

    // Array
    var fraction = new Fraction([1, 4]);
    assert.equal("1/4", fraction.n + "/" + fraction.d);
  });
});

describe('fractions', function() {

  it("Should pass 0.08 = 2/25", function() {

    var fraction = new Fraction("0.08");
    assert.equal("2/25", fraction.n + "/" + fraction.d);
  });

  it("Should pass 0.200 = 1/5", function() {

    var fraction = new Fraction("0.200");
    assert.equal("1/5", fraction.n + "/" + fraction.d);
  });

  it("Should pass 0.125 = 1/8", function() {

    var fraction = new Fraction("0.125");
    assert.equal("1/8", fraction.n + "/" + fraction.d);
  });

  it("Should pass 8.36 = 209/25", function() {

    var fraction = new Fraction(8.36);
    assert.equal("209/25", fraction.n + "/" + fraction.d);
  });

});

describe('constructors', function() {

  it("Should pass 0.08 = 2/25", function() {

    var tmp = new Fraction({d: 4, n: 2, s: -1});
    assert.equal("-1/2", tmp.s * tmp.n + "/" + tmp.d);

    var tmp = new Fraction(-88.3);
    assert.equal("-883/10", tmp.s * tmp.n + "/" + tmp.d);

    var tmp = new Fraction(-88.3).clone();
    assert.equal("-883/10", tmp.s * tmp.n + "/" + tmp.d);

    var tmp = new Fraction("123.'3'");
    assert.equal("370/3", tmp.s * tmp.n + "/" + tmp.d);

    var tmp = new Fraction("123.'3'").clone();
    assert.equal("370/3", tmp.s * tmp.n + "/" + tmp.d);

    var tmp = new Fraction([-1023461776, 334639305]);
    tmp = tmp.add([4, 25]);
    assert.equal("-4849597436/1673196525", tmp.s * tmp.n + "/" + tmp.d);
  });
});

describe('Latex Output', function() {

  it("Should pass 123.'3' = \\frac{370}{3}", function() {

    var tmp = new Fraction("123.'3'");
    assert.equal("\\frac{370}{3}", tmp.toLatex());
  });

  it("Should pass 1.'3' = \\frac{4}{3}", function() {

    var tmp = new Fraction("1.'3'");
    assert.equal("\\frac{4}{3}", tmp.toLatex());
  });

  it("Should pass -1.0000000000 = -1", function() {

    var tmp = new Fraction("-1.0000000000");
    assert.equal('-1', tmp.toLatex());
  });

  it("Should pass -0.0000000000 = 0", function() {

    var tmp = new Fraction("-0.0000000000");
    assert.equal('0', tmp.toLatex());
  });
});

describe('Fraction Output', function() {

  it("Should pass 123.'3' = 123 1/3", function() {

    var tmp = new Fraction("123.'3'");
    assert.equal('370/3', tmp.toFraction());
  });

  it("Should pass 1.'3' = 1 1/3", function() {

    var tmp = new Fraction("1.'3'");
    assert.equal('4/3', tmp.toFraction());
  });

  it("Should pass -1.0000000000 = -1", function() {

    var tmp = new Fraction("-1.0000000000");
    assert.equal('-1', tmp.toFraction());
  });

  it("Should pass -0.0000000000 = 0", function() {

    var tmp = new Fraction("-0.0000000000");
    assert.equal('0', tmp.toFraction());
  });

  it("Should pass 1/-99/293 = -1/29007", function() {

    var tmp = new Fraction(-99).inverse().div(293);
    assert.equal('-1/29007', tmp.toFraction());
  });

  it('Should work with large calculations', function() {
    var x = Fraction(1123875);
    var y = Fraction(1238750184);
    var z = Fraction(1657134);
    var r = Fraction(77344464613500, 92063);
    assert.equal(x.mul(y).div(z).toFraction(), r.toFraction());
  });
});

describe('Fraction toContined', function() {

  it("Should pass 415/93", function() {

    var tmp = new Fraction(415, 93);
    assert.equal('4,2,6,7', tmp.toContinued().toString());
  });

  it("Should pass 0/2", function() {

    var tmp = new Fraction(0, 2);
    assert.equal('0', tmp.toContinued().toString());
  });

  it("Should pass 1/7", function() {

    var tmp = new Fraction(1, 7);
    assert.equal('0,7', tmp.toContinued().toString());
  });

  it("Should pass 23/88", function() {

    var tmp = new Fraction('23/88');
    assert.equal('0,3,1,4,1,3', tmp.toContinued().toString());
  });

  it("Should pass 1/99", function() {

    var tmp = new Fraction('1/99');
    assert.equal('0,99', tmp.toContinued().toString());
  });

  it("Should pass 1768/99", function() {

    var tmp = new Fraction('1768/99');
    assert.equal('17,1,6,14', tmp.toContinued().toString());
  });

  it("Should pass 1768/99", function() {

    var tmp = new Fraction('7/8');
    assert.equal('0,1,7', tmp.toContinued().toString());
  });

});

describe('Fraction NaN', function() {

  for (var i in Fraction.prototype) {

    (function(i) {

      if (Fraction.prototype[i] instanceof Function)
        switch (i) {
          case 'toFraction':
          case 'toContinued':
          case 'toLatex':
          case 'valueOf':
          case 'divisible':
          case 'compare':
          case 'equals':
            break;
          case 'toString':
            it("Should pass " + i, function() {
              var x = Fraction(NaN)[i]();

              assert.equal('NaN', x);
            });
            break;
          case 'add':
          case 'sub':
          case 'mul':
          case 'div':
          case 'pow':
          case "gcd":
          case 'lcm':
          case 'equals':
            it("Should pass " + i, function() {
              var x = Fraction(NaN)[i](NaN);

              assert.equal('NaN NaN', x.d + " " + x.d);
            });
            break;

          default:
            it("Should pass " + i, function() {

              var x = Fraction(NaN)[i]();

              assert.equal('NaN NaN', x.d + " " + x.d);
            });
        }

    })(i);
  }
});