metamask-extension/test/unit/app/controllers/network/pending-middleware-test.js

import assert from 'assert'
import { createPendingNonceMiddleware, createPendingTxMiddleware } from '../../../../../app/scripts/controllers/network/middleware/pending'
import { txMetaStub } from './stubs'

describe('PendingNonceMiddleware', function () {
  describe('#createPendingNonceMiddleware', function () {
    const getPendingNonce = async () => '0x2'
    const address = '0xF231D46dD78806E1DD93442cf33C7671f8538748'
    const pendingNonceMiddleware = createPendingNonceMiddleware({ getPendingNonce })

    it('should call next if not a eth_getTransactionCount request', function (done) {
      const req = { method: 'eth_getBlockByNumber' }
      const res = {}
      pendingNonceMiddleware(req, res, () => done())
    })
    it('should call next if not a "pending" block request', function (done) {
      const req = { method: 'eth_getTransactionCount', params: [address] }
      const res = {}
      pendingNonceMiddleware(req, res, () => done())
    })
    it('should fill the result with a the "pending" nonce', function (done) {
      const req = { method: 'eth_getTransactionCount', params: [address, 'pending'] }
      const res = {}
      pendingNonceMiddleware(req, res, () => {
        done(new Error('should not have called next'))
      }, () => {
        assert(res.result === '0x2')
        done()
      })
    })
  })

  describe('#createPendingTxMiddleware', function () {
    let returnUndefined = true
    const getPendingTransactionByHash = () => (returnUndefined ? undefined : txMetaStub)
    const address = '0xF231D46dD78806E1DD93442cf33C7671f8538748'
    const pendingTxMiddleware = createPendingTxMiddleware({ getPendingTransactionByHash })
    const spec = {
      'blockHash': null,
      'blockNumber': null,
      'from': '0xf231d46dd78806e1dd93442cf33c7671f8538748',
      'gas': '0x5208',
      'gasPrice': '0x1e8480',
      'hash': '0x2cc5a25744486f7383edebbf32003e5a66e18135799593d6b5cdd2bb43674f09',
      'input': '0x',
      'nonce': '0x4',
      'to': '0xf231d46dd78806e1dd93442cf33c7671f8538748',
      'transactionIndex': null,
      'value': '0x0',
      'v': '0x2c',
      'r': '0x5f973e540f2d3c2f06d3725a626b75247593cb36477187ae07ecfe0a4db3cf57',
      's': '0x0259b52ee8c58baaa385fb05c3f96116e58de89bcc165cb3bfdfc708672fed8a',
    }
    it('should call next if not a eth_getTransactionByHash request', function (done) {
      const req = { method: 'eth_getBlockByNumber' }
      const res = {}
      pendingTxMiddleware(req, res, () => done())
    })

    it('should call next if no pending txMeta is in history', function (done) {
      const req = { method: 'eth_getTransactionByHash', params: [address] }
      const res = {}
      pendingTxMiddleware(req, res, () => done())
    })

    it('should fill the result with a the "pending" tx the result should match the rpc spec', function (done) {
      returnUndefined = false
      const req = { method: 'eth_getTransactionByHash', params: [address, 'pending'] }
      const res = {}
      pendingTxMiddleware(req, res, () => {
        done(new Error('should not have called next'))
      }, () => {
        assert.deepStrictEqual(res.result, spec, new Error('result does not match the spec object'))
        done()
      })
    })
  })
})