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109 lines
1.9 KiB
109 lines
1.9 KiB
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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