| 1 | 'use strict';
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| 2 |
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| 3 |
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| 4 | var chai = require('chai');
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| 5 | var should = chai.should();
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| 6 | var expect = chai.expect;
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| 7 |
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| 8 | var BN = require('../../lib/index').BigNumber
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| 9 |
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| 10 |
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| 11 |
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| 12 | describe('BigNumber', function() {
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| 13 |
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| 14 | describe('New a big number', function() {
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| 15 | it('should return 0x0', function() {
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| 16 | let bn = new BN.BigNumber('0x')
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| 17 | bn._hex.should.equal('0x0');
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| 18 | });
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| 19 |
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| 20 | it('invalid BigNumber string value', function() {
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| 21 | (function() {
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| 22 | new BN.BigNumber('0xQWER')
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| 23 | }.should.throw('invalid BigNumber string value'))
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| 24 | });
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| 25 |
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| 26 | it('underflow', function() {
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| 27 | (function() {
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| 28 | new BN.BigNumber(1.1)
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| 29 | }.should.throw('underflow'))
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| 30 | });
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| 31 |
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| 32 | it('value is bignumber', function() {
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| 33 | let bn = new BN.BigNumber(123)
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| 34 | let bn1 = new BN.BigNumber(bn)
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| 35 | bn1._hex.should.equal('0x7b');
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| 36 | });
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| 37 |
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| 38 | it('invalid BigNumber value', function() {
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| 39 | (function() {
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| 40 | new BN.BigNumber([123,456])
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| 41 | }.should.throw('invalid BigNumber value'))
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| 42 | });
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| 43 | });
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| 44 |
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| 45 | describe('calculate big number', function() {
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| 46 | it('from twos', function() {
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| 47 | let bn = new BN.BigNumber(11)
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| 48 | bn.fromTwos(2)._hex.should.equal('-0x01');
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| 49 | });
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| 50 |
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| 51 | it('add', function() {
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| 52 | let bn1 = new BN.BigNumber(11)
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| 53 | let bn2 = new BN.BigNumber(12)
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| 54 | bn1.add(bn2)._hex.should.equal('0x17');
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| 55 | });
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| 56 |
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| 57 | it('sub', function() {
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| 58 | let bn1 = new BN.BigNumber(11)
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| 59 | let bn2 = new BN.BigNumber(12)
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| 60 | bn2.sub(bn1)._hex.should.equal('0x01');
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| 61 | });
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| 62 |
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| 63 | it('div', function() {
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| 64 | let bn1 = new BN.BigNumber(12)
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| 65 | let bn2 = new BN.BigNumber(4)
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| 66 | bn1.div(bn2)._hex.should.equal('0x03');
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| 67 | });
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| 68 |
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| 69 | it('mul', function() {
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| 70 | let bn1 = new BN.BigNumber(3)
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| 71 | let bn2 = new BN.BigNumber(4)
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| 72 | bn1.mul(bn2)._hex.should.equal('0x0c');
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| 73 | });
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| 74 |
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| 75 | it('mod', function() {
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| 76 | let bn1 = new BN.BigNumber(9)
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| 77 | let bn2 = new BN.BigNumber(4)
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| 78 | bn1.mod(bn2)._hex.should.equal('0x01');
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| 79 | });
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| 80 |
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| 81 | it('pow', function() {
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| 82 | let bn1 = new BN.BigNumber(2)
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| 83 | let bn2 = new BN.BigNumber(3)
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| 84 | bn1.pow(bn2)._hex.should.equal('0x08');
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| 85 | });
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| 86 |
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| 87 | it('eq', function() {
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| 88 | let bn1 = new BN.BigNumber(3)
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| 89 | let bn2 = new BN.BigNumber(3)
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| 90 | bn1.eq(bn2).should.equal(true);
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| 91 | });
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| 92 |
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| 93 | it('lte', function() {
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| 94 | let bn1 = new BN.BigNumber(3)
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| 95 | let bn2 = new BN.BigNumber(4)
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| 96 | bn1.lte(bn2).should.equal(true);
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| 97 | });
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| 98 |
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| 99 | it('gte', function() {
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| 100 | let bn1 = new BN.BigNumber(3)
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| 101 | let bn2 = new BN.BigNumber(4)
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| 102 | bn1.gte(bn2).should.equal(false);
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| 103 | });
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| 104 |
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| 105 | it('isZero', function() {
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| 106 | let bn1 = new BN.BigNumber(3)
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| 107 | bn1.isZero().should.equal(false);
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| 108 | });
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| 109 |
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| 110 | it('toString', function() {
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| 111 | let bn1 = new BN.BigNumber(3)
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| 112 | bn1.toString().should.equal('3');
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| 113 | });
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| 114 |
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| 115 | });
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| 116 | });
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