110 lines
1.9 KiB
JavaScript
110 lines
1.9 KiB
JavaScript
var assert = require('assert')
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var UINT32 = require('..').UINT32
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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 = UINT32(0).add( UINT32(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 = UINT32(0).add( UINT32(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 = UINT32(1).add( UINT32(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 = UINT32(1).add( UINT32(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 = UINT32(123).add( UINT32(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 = UINT32(n).add( UINT32(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 = UINT32(n).add( UINT32(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 = UINT32(n, 16).add( UINT32(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 = UINT32('326648991').add( UINT32('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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})
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