aaac7fed
 liuqimichale
add
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var assert = require('assert')
var UINT32 = require('..').UINT32
describe('xor method', function () {
describe('0^1', function () {
it('should return 1', function (done) {
var u = UINT32(0).xor( UINT32(1) )
assert.equal( u.toNumber(), 1 )
done()
})
})
describe('1^2', function () {
it('should return 3', function (done) {
var u = UINT32(1).xor( UINT32(2) )
assert.equal( u.toNumber(), 3 )
done()
})
})
describe('1^2^16', function () {
it('should return n+1', function (done) {
var n = Math.pow(2, 16)
var u = UINT32(1).xor( UINT32(n) )
assert.equal( u.toNumber(), n+1 )
done()
})
})
describe('2^16^1', function () {
it('should return n+1', function (done) {
var n = Math.pow(2, 16)
var u = UINT32(n).xor( UINT32(1) )
assert.equal( u.toNumber(), n+1 )
done()
})
})
describe('2^16^2^16', function () {
it('should return 0', function (done) {
var n = Math.pow(2, 16)
var u = UINT32(n).xor( UINT32(n) )
assert.equal( u.toNumber(), 0 )
done()
})
})
})
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