52 lines
855 B
JavaScript
52 lines
855 B
JavaScript
var assert = require('assert')
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var UINT32 = require('..').UINT32
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describe('negate method', function () {
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describe('0', function () {
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it('should return 0', function (done) {
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var u = UINT32(0).negate()
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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('1', function () {
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it('should return -1', function (done) {
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var u = UINT32(1).negate()
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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('low bit', function () {
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it('should return -n', function (done) {
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var u = UINT32(3).negate()
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assert.equal( u.toNumber(), -3 )
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done()
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})
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})
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describe('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).negate()
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assert.equal( u.toNumber(), -n )
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done()
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})
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})
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})
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