Avoid undefined error in batch operation

[yonaichin]

No description provided.

[AleksandrRogov]

hi @yonaichin , thank you for a pull request. Can you please provide a sample to reproduce an error you're fixing here? What request you're sending and what data you receive? Thanks.

[coveralls]

Coverage increased (+0.002%) to 96.375% when pulling af2eeae on yonaichin:master into 864b425 on AleksandrRogov:master.

[yonaichin]

Hi, @AleksandrRogov
I think it's the existing record that causing this problem here.
The batch operation is actually succeeded however the error will show as below.

/dynamics365/node_modules/dynamics-web-api/lib/requests/helpers/parseResponse.js:151
                    if (parseParams[requestNumber].hasOwnProperty('valueIfEmpty')) {
                                                   ^

TypeError: Cannot read property 'hasOwnProperty' of undefined
    at parseBatchResponse (/dynamics365/node_modules/dynamics-web-api/lib/requests/helpers/parseResponse.js:151:52)
    at parseBatchResponse (/dynamics365/node_modules/dynamics-web-api/lib/requests/helpers/parseResponse.js:137:36)
    at parseResponse (/dynamics365/node_modules/dynamics-web-api/lib/requests/helpers/parseResponse.js:187:25)
    at IncomingMessage.<anonymous> (/dynamics365/node_modules/dynamics-web-api/lib/requests/http.js:57:40)
    at emitNone (events.js:111:20)
    at IncomingMessage.emit (events.js:208:7)
    at endReadableNT (_stream_readable.js:1064:12)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9)

I was trying to upsert a contact that is associated with the account. However, there's already a contact with the same name which is okay with dynamics 365 I supposed.

1. Create a contact with the name "John Doe" on dynamics 365 using api or Web.
2. Then run the code below

const account = {
  name: 'AAAA1',
}
const contact = {
  firstname: 'John',
  lastname: 'Doe',
  jobtitle: 'janitor',
  '[email protected]': 'accounts(00000000-0000-0000-0000-000000000002)'
}

dynamicsWebApi.startBatch()
dynamicsWebApi.upsert('00000000-0000-0000-0000-000000000002', 'accounts', account)
dynamicsWebApi.upsert('732e87e1-1d96-e711-80e4-00155db75426', 'contacts', contact)
dynamicsWebApi.executeBatch() 
  .then(() => console.log('success!'))
  .catch(console.error)

This should create 2 contacts, "John Doe" and the "John Doe" with the job title.
Hope this helps.
Please let me know if there's still anything to add up.
Thanks