Feature/split unit tests

[owenvoke]

Fixes #540

Checklist

• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the [Contribution Guide] and my PR follows them.
• I updated my branch with the master branch.
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation about the functionality in the appropriate .md file
• I have added in line documentation to the code I modified

Short description of what this PR does:

• Splits up the test suite into multiple files as per Break the testing class apart :: test/unit/SendGridTest.php #540

Travis tests

• General Information
• PHP 5.6
• PHP 7.0

[owenvoke]

Well, Travis failed. They seem to be having issues recently. 😕

https://www.traviscistatus.com/incidents/xgpn2tq6mx7k

This one I can't resolve as I'm not able to restart the Travis job.

[mbernier]

I just kicked it over, we will see what Travis says here in a bit!

[owenvoke]

Well... that definitely didn't work. 😋

I'll have a look a bit later when I get off work, and see if I can get it working again.

[owenvoke]

This seems to all be working, except for one test.

It looks like this test has never passed though.
https://github.com/sendgrid/sendgrid-php/commits/master/test/unit/FilesExistTest.php

[thinkingserious]

No worries @pxgamer, that test is expected to fail at the moment.

This PR has been added to our backlog for review, thanks!

[mbernier]

We are good to go, thank you @pxgamer!!

[thinkingserious]

Hello @pxgamer,

Thanks again for the PR!

We appreciate your contribution and look forward to continued collaboration. Thanks!

Team SendGrid DX