yiyunjianzhuBeta/node_modules/cuint/test/UINT64_rotateRight-test.js

var assert = require('assert')
var UINT64 = require('..').UINT64

describe('rotateRight method', function () {

  describe('0rotr1', function () {

    it('should return 0', function (done) {
      var u = UINT64(0).rotateRight(1)

      assert.equal( u.toNumber(), 0 )
      done()
    })

  })

  describe('4rotr1', function () {

    it('should return 2', function (done) {
      var u = UINT64(4).rotateRight(1)

      assert.equal( u.toNumber(), 2 )
      done()
    })

  })

  describe('2^16rotr16', function () {

    it('should return 1', function (done) {
      var n = Math.pow(2, 16)
      var u = UINT64(n).rotateRight(16)

      assert.equal( u.toNumber(), 1 )
      done()
    })

  })

  describe('1rotr32', function () {

    it('should return 1', function (done) {
      var u = UINT64(1).rotateRight(32)

      assert.equal( u.toString(16), '100000000' )
      done()
    })

  })

})