If anyone needs to test their code, you could use www.pastebin.com
This might not be the best way to test if the code is working as it should be but if you are good at what you are doing then you should be fine.
Twitch API documentation on Github provides some examples of what should be returned when making a call to the API. You could copy this example and paste it into www.pastebin.com to create some “dummy data” and then use the raw url for the pasted file to read the data from the file. If your code works with this “dummy data” then it should work with the partnered channels.