var assert = require('assert') var MetaMaskController = require('../../app/scripts/metamask-controller') var sinon = require('sinon') var extend = require('xtend') const STORAGE_KEY = 'metamask-config' describe('MetaMaskController', function() { const noop = () => {} let controller = new MetaMaskController({ showUnconfirmedMessage: noop, unlockAccountMessage: noop, showUnapprovedTx: noop, setData, loadData, }) beforeEach(function() { // sinon allows stubbing methods that are easily verified this.sinon = sinon.sandbox.create() window.localStorage = {} // Hacking localStorage support into JSDom }) afterEach(function() { // sinon requires cleanup otherwise it will overwrite context this.sinon.restore() }) describe('#enforceTxValidations', function () { it('returns null for positive values', function() { var sample = { value: '0x01' } var res = controller.enforceTxValidations(sample) assert.equal(res, null, 'no error') }) it('returns error for negative values', function() { var sample = { value: '-0x01' } var res = controller.enforceTxValidations(sample) assert.ok(res, 'error') }) }) }) function loadData () { var oldData = getOldStyleData() var newData try { newData = JSON.parse(window.localStorage[STORAGE_KEY]) } catch (e) {} var data = extend({ meta: { version: 0, }, data: { config: { provider: { type: 'testnet', }, }, }, }, oldData || null, newData || null) return data } function getOldStyleData () { var config, wallet, seedWords var result = { meta: { version: 0 }, data: {}, } try { config = JSON.parse(window.localStorage['config']) result.data.config = config } catch (e) {} try { wallet = JSON.parse(window.localStorage['lightwallet']) result.data.wallet = wallet } catch (e) {} try { seedWords = window.localStorage['seedWords'] result.data.seedWords = seedWords } catch (e) {} return result } function setData (data) { window.localStorage[STORAGE_KEY] = JSON.stringify(data) }