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120 lines
2.2 KiB
120 lines
2.2 KiB
var assert = require('assert') |
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var UINT64 = require('..').UINT64 |
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describe('add method', function () { |
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describe('0+0', function () { |
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it('should return 0', function (done) { |
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var u = UINT64(0).add( UINT64(0) ) |
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assert.equal( u.toNumber(), 0 ) |
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done() |
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}) |
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}) |
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describe('0+1', function () { |
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it('should return 1', function (done) { |
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var u = UINT64(0).add( UINT64(1) ) |
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assert.equal( u.toNumber(), 1 ) |
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done() |
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}) |
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}) |
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describe('1+0', function () { |
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it('should return 0', function (done) { |
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var u = UINT64(1).add( UINT64(0) ) |
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assert.equal( u.toNumber(), 1 ) |
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done() |
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}) |
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}) |
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describe('1+1', function () { |
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it('should return 2', function (done) { |
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var u = UINT64(1).add( UINT64(1) ) |
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assert.equal( u.toNumber(), 2 ) |
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done() |
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}) |
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}) |
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describe('low bit+high bit', function () { |
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it('should return n', function (done) { |
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var n = Math.pow(2, 17) |
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var u = UINT64(123).add( UINT64(n) ) |
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assert.equal( u.toNumber(), 123 + n ) |
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done() |
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}) |
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}) |
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describe('high bit+low bit', function () { |
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it('should return n', function (done) { |
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var n = Math.pow(2, 17) |
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var u = UINT64(n).add( UINT64(123) ) |
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assert.equal( u.toNumber(), 123 + n ) |
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done() |
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}) |
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}) |
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describe('high bit+high bit', function () { |
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it('should return n', function (done) { |
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var n = Math.pow(2, 17) |
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var u = UINT64(n).add( UINT64(n) ) |
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assert.equal( u.toNumber(), n + n ) |
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done() |
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}) |
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}) |
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describe('overflow', function () { |
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it('should return n', function (done) { |
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var n = 'FFFFFFFF' |
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var u = UINT64(n, 16).add( UINT64(n, 16) ) |
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assert.equal( u.toNumber(), -2 ) |
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done() |
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}) |
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}) |
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describe('high bit+high bit 2', function () { |
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it('should return n', function (done) { |
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var u = UINT64('326648991').add( UINT64('265443576') ) |
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assert.equal( u.toNumber(), 592092567 ) |
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done() |
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}) |
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}) |
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describe('high bit+high bit 3', function () { |
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it('should return n', function (done) { |
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var u = UINT64('800000000000', 16).add( UINT64('100000000000', 16) ) |
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assert.equal( u.toString(16), '900000000000' ) |
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done() |
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}) |
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}) |
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})
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