Find a very useful tool for testing pending requests. If you do something with API you always need to handle pending requests otherwise user is blocked and has to wait until it fails or gets respond. So for testing pending requests you can use this tooland handle them.
For example I want to delay 5 second then I use it like that “http://www.fakeresponse.com/api/?sleep=5”sleep value is for delaying your request. So you can change it to anything else.
Have fun with testing!