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path: root/test/unit/tx-controller-test.js
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const assert = require('assert')
const EventEmitter = require('events')
const ethUtil = require('ethereumjs-util')
const EthTx = require('ethereumjs-tx')
const EthQuery = require('eth-query')
const ObservableStore = require('obs-store')
const clone = require('clone')
const sinon = require('sinon')
const TransactionController = require('../../app/scripts/controllers/transactions')
const noop = () => true
const currentNetworkId = 42
const otherNetworkId = 36
const privKey = new Buffer('8718b9618a37d1fc78c436511fc6df3c8258d3250635bba617f33003270ec03e', 'hex')

describe('Transaction Controller', function () {
  let txController

  beforeEach(function () {
    txController = new TransactionController({
      networkStore: new ObservableStore(currentNetworkId),
      txHistoryLimit: 10,
      provider: { _blockTracker: new EventEmitter() },
      blockTracker: new EventEmitter(),
      ethQuery: new EthQuery(new EventEmitter()),
      signTransaction: (ethTx) => new Promise((resolve) => {
        ethTx.sign(privKey)
        resolve()
      }),
    })
  })

  describe('#validateTxParams', function () {
    it('returns null for positive values', function () {
      var sample = {
        value: '0x01',
      }
      txController.txProviderUtils.validateTxParams(sample, (err) => {
        assert.equal(err, null, 'no error')
      })
    })

    it('returns error for negative values', function () {
      var sample = {
        value: '-0x01',
      }
      txController.txProviderUtils.validateTxParams(sample, (err) => {
        assert.ok(err, 'error')
      })
    })
  })

  describe('#getTxList', function () {
    it('when new should return empty array', function () {
      var result = txController.getTxList()
      assert.ok(Array.isArray(result))
      assert.equal(result.length, 0)
    })
    it('should also return transactions from local storage if any', function () {

    })
  })

  describe('#addTx', function () {
    it('adds a tx returned in getTxList', function () {
      var tx = { id: 1, status: 'confirmed', metamaskNetworkId: currentNetworkId, txParams: {} }
      txController.addTx(tx, noop)
      var result = txController.getTxList()
      assert.ok(Array.isArray(result))
      assert.equal(result.length, 1)
      assert.equal(result[0].id, 1)
    })

    it('does not override txs from other networks', function () {
      var tx = { id: 1, status: 'confirmed', metamaskNetworkId: currentNetworkId, txParams: {} }
      var tx2 = { id: 2, status: 'confirmed', metamaskNetworkId: otherNetworkId, txParams: {} }
      txController.addTx(tx, noop)
      txController.addTx(tx2, noop)
      var result = txController.getFullTxList()
      var result2 = txController.getTxList()
      assert.equal(result.length, 2, 'txs were deleted')
      assert.equal(result2.length, 1, 'incorrect number of txs on network.')
    })

    it('cuts off early txs beyond a limit', function () {
      const limit = txController.txHistoryLimit
      for (let i = 0; i < limit + 1; i++) {
        const tx = { id: i, time: new Date(), status: 'confirmed', metamaskNetworkId: currentNetworkId, txParams: {} }
        txController.addTx(tx, noop)
      }
      var result = txController.getTxList()
      assert.equal(result.length, limit, `limit of ${limit} txs enforced`)
      assert.equal(result[0].id, 1, 'early txs truncted')
    })

    it('cuts off early txs beyond a limit whether or not it is confirmed or rejected', function () {
      const limit = txController.txHistoryLimit
      for (let i = 0; i < limit + 1; i++) {
        const tx = { id: i, time: new Date(), status: 'rejected', metamaskNetworkId: currentNetworkId, txParams: {} }
        txController.addTx(tx, noop)
      }
      var result = txController.getTxList()
      assert.equal(result.length, limit, `limit of ${limit} txs enforced`)
      assert.equal(result[0].id, 1, 'early txs truncted')
    })

    it('cuts off early txs beyond a limit but does not cut unapproved txs', function () {
      var unconfirmedTx = { id: 0, time: new Date(), status: 'unapproved', metamaskNetworkId: currentNetworkId, txParams: {} }
      txController.addTx(unconfirmedTx, noop)
      const limit = txController.txHistoryLimit
      for (let i = 1; i < limit + 1; i++) {
        const tx = { id: i, time: new Date(), status: 'confirmed', metamaskNetworkId: currentNetworkId, txParams: {} }
        txController.addTx(tx, noop)
      }
      var result = txController.getTxList()
      assert.equal(result.length, limit, `limit of ${limit} txs enforced`)
      assert.equal(result[0].id, 0, 'first tx should still be there')
      assert.equal(result[0].status, 'unapproved', 'first tx should be unapproved')
      assert.equal(result[1].id, 2, 'early txs truncted')
    })
  })

  describe('#setTxStatusSigned', function () {
    it('sets the tx status to signed', function () {
      var tx = { id: 1, status: 'unapproved', metamaskNetworkId: currentNetworkId, txParams: {} }
      txController.addTx(tx, noop)
      txController.setTxStatusSigned(1)
      var result = txController.getTxList()
      assert.ok(Array.isArray(result))
      assert.equal(result.length, 1)
      assert.equal(result[0].status, 'signed')
    })

    it('should emit a signed event to signal the exciton of callback', (done) => {
      this.timeout(10000)
      var tx = { id: 1, status: 'unapproved', metamaskNetworkId: currentNetworkId, txParams: {} }
      const noop = function () {
        assert(true, 'event listener has been triggered and noop executed')
        done()
      }
      txController.addTx(tx)
      txController.on('1:signed', noop)
      txController.setTxStatusSigned(1)
    })
  })

  describe('#setTxStatusRejected', function () {
    it('sets the tx status to rejected', function () {
      var tx = { id: 1, status: 'unapproved', metamaskNetworkId: currentNetworkId, txParams: {} }
      txController.addTx(tx)
      txController.setTxStatusRejected(1)
      var result = txController.getTxList()
      assert.ok(Array.isArray(result))
      assert.equal(result.length, 1)
      assert.equal(result[0].status, 'rejected')
    })

    it('should emit a rejected event to signal the exciton of callback', (done) => {
      this.timeout(10000)
      var tx = { id: 1, status: 'unapproved', metamaskNetworkId: currentNetworkId, txParams: {} }
      txController.addTx(tx)
      const noop = function (err, txId) {
        assert(true, 'event listener has been triggered and noop executed')
        done()
      }
      txController.on('1:rejected', noop)
      txController.setTxStatusRejected(1)
    })
  })

  describe('#updateTx', function () {
    it('replaces the tx with the same id', function () {
      txController.addTx({ id: '1', status: 'unapproved', metamaskNetworkId: currentNetworkId, txParams: {} }, noop)
      txController.addTx({ id: '2', status: 'confirmed', metamaskNetworkId: currentNetworkId, txParams: {} }, noop)
      txController.updateTx({ id: '1', status: 'blah', hash: 'foo', metamaskNetworkId: currentNetworkId, txParams: {} })
      var result = txController.getTx('1')
      assert.equal(result.hash, 'foo')
    })

    it('updates gas price', function () {
      const originalGasPrice = '0x01'
      const desiredGasPrice = '0x02'

      const txMeta = {
        id: '1',
        status: 'unapproved',
        metamaskNetworkId: currentNetworkId,
        txParams: {
          gasPrice: originalGasPrice,
        },
      }

      const updatedMeta = clone(txMeta)

      txController.addTx(txMeta)
      updatedMeta.txParams.gasPrice = desiredGasPrice
      txController.updateTx(updatedMeta)
      var result = txController.getTx('1')
      assert.equal(result.txParams.gasPrice, desiredGasPrice, 'gas price updated')
    })
  })

  describe('#getUnapprovedTxList', function () {
    it('returns unapproved txs in a hash', function () {
      txController.addTx({ id: '1', status: 'unapproved', metamaskNetworkId: currentNetworkId, txParams: {} }, noop)
      txController.addTx({ id: '2', status: 'confirmed', metamaskNetworkId: currentNetworkId, txParams: {} }, noop)
      const result = txController.getUnapprovedTxList()
      assert.equal(typeof result, 'object')
      assert.equal(result['1'].status, 'unapproved')
      assert.equal(result['2'], undefined)
    })
  })

  describe('#getTx', function () {
    it('returns a tx with the requested id', function () {
      txController.addTx({ id: '1', status: 'unapproved', metamaskNetworkId: currentNetworkId, txParams: {} }, noop)
      txController.addTx({ id: '2', status: 'confirmed', metamaskNetworkId: currentNetworkId, txParams: {} }, noop)
      assert.equal(txController.getTx('1').status, 'unapproved')
      assert.equal(txController.getTx('2').status, 'confirmed')
    })
  })

  describe('#getFilteredTxList', function () {
    it('returns a tx with the requested data', function () {
      const txMetas = [
        { id: 0, status: 'unapproved', txParams: { from: '0xaa', to: '0xbb' }, metamaskNetworkId: currentNetworkId },
        { id: 1, status: 'unapproved', txParams: { from: '0xaa', to: '0xbb' }, metamaskNetworkId: currentNetworkId },
        { id: 2, status: 'unapproved', txParams: { from: '0xaa', to: '0xbb' }, metamaskNetworkId: currentNetworkId },
        { id: 3, status: 'unapproved', txParams: { from: '0xbb', to: '0xaa' }, metamaskNetworkId: currentNetworkId },
        { id: 4, status: 'unapproved', txParams: { from: '0xbb', to: '0xaa' }, metamaskNetworkId: currentNetworkId },
        { id: 5, status: 'confirmed', txParams: { from: '0xaa', to: '0xbb' }, metamaskNetworkId: currentNetworkId },
        { id: 6, status: 'confirmed', txParams: { from: '0xaa', to: '0xbb' }, metamaskNetworkId: currentNetworkId },
        { id: 7, status: 'confirmed', txParams: { from: '0xbb', to: '0xaa' }, metamaskNetworkId: currentNetworkId },
        { id: 8, status: 'confirmed', txParams: { from: '0xbb', to: '0xaa' }, metamaskNetworkId: currentNetworkId },
        { id: 9, status: 'confirmed', txParams: { from: '0xbb', to: '0xaa' }, metamaskNetworkId: currentNetworkId },
      ]
      txMetas.forEach((txMeta) => txController.addTx(txMeta, noop))
      let filterParams

      filterParams = { status: 'unapproved', from: '0xaa' }
      assert.equal(txController.getFilteredTxList(filterParams).length, 3, `getFilteredTxList - ${JSON.stringify(filterParams)}`)
      filterParams = { status: 'unapproved', to: '0xaa' }
      assert.equal(txController.getFilteredTxList(filterParams).length, 2, `getFilteredTxList - ${JSON.stringify(filterParams)}`)
      filterParams = { status: 'confirmed', from: '0xbb' }
      assert.equal(txController.getFilteredTxList(filterParams).length, 3, `getFilteredTxList - ${JSON.stringify(filterParams)}`)
      filterParams = { status: 'confirmed' }
      assert.equal(txController.getFilteredTxList(filterParams).length, 5, `getFilteredTxList - ${JSON.stringify(filterParams)}`)
      filterParams = { from: '0xaa' }
      assert.equal(txController.getFilteredTxList(filterParams).length, 5, `getFilteredTxList - ${JSON.stringify(filterParams)}`)
      filterParams = { to: '0xaa' }
      assert.equal(txController.getFilteredTxList(filterParams).length, 5, `getFilteredTxList - ${JSON.stringify(filterParams)}`)
    })
  })

  describe('#approveTransaction', function () {
    let txMeta, originalValue

    beforeEach(function () {
      originalValue = '0x01'
      txMeta = {
        id: '1',
        status: 'unapproved',
        metamaskNetworkId: currentNetworkId,
        txParams: {
          nonce: originalValue,
          gas: originalValue,
          gasPrice: originalValue,
        },
      }
    })


    it('does not overwrite set values', function (done) {
      const wrongValue = '0x05'

      txController.addTx(txMeta)

      const estimateStub = sinon.stub(txController.txProviderUtils.query, 'estimateGas')
      .callsArgWith(1, null, wrongValue)

      const priceStub = sinon.stub(txController.txProviderUtils.query, 'gasPrice')
      .callsArgWith(0, null, wrongValue)

      const nonceStub = sinon.stub(txController.txProviderUtils.query, 'getTransactionCount')
      .callsArgWith(2, null, wrongValue)

      const signStub = sinon.stub(txController, 'signTransaction')
      .callsArgWith(1, null, noop)

      const pubStub = sinon.stub(txController.txProviderUtils, 'publishTransaction')
      .callsArgWith(1, null, originalValue)

      txController.approveTransaction(txMeta.id, (err) => {
        assert.ifError(err, 'should not error')

        const result = txController.getTx(txMeta.id)
        const params = result.txParams

        assert.equal(params.gas, originalValue, 'gas unmodified')
        assert.equal(params.gasPrice, originalValue, 'gas price unmodified')
        assert.equal(params.nonce, originalValue, 'nonce unmodified')
        assert.equal(result.hash, originalValue, 'hash was set')

        estimateStub.restore()
        priceStub.restore()
        signStub.restore()
        nonceStub.restore()
        pubStub.restore()

        done()
      })
    })
  })

  describe('#sign replay-protected tx', function () {
    it('prepares a tx with the chainId set', function (done) {
      txController.addTx({ id: '1', status: 'unapproved', metamaskNetworkId: currentNetworkId, txParams: {} }, noop)
      txController.signTransaction('1', (err, rawTx) => {
        if (err) return done('it should not fail')
        const ethTx = new EthTx(ethUtil.toBuffer(rawTx))
        assert.equal(ethTx.getChainId(), currentNetworkId)
        done()
      })
    })
  })
})