How to use intervals in protractor / selenium

Question

I am writing a series of automated tests and getting intermittent timeout / synchronization errors. I looked online and said that using intervals would solve this problem.

https://github.com/angular/angular.js/blob/master/src/ng/interval.js

I was wondering how can I include the interval.js file with the rest of the files? I add a line to the protractor-config.js file or bind it elsewhere. If so, how do I tie it?

Answer 1

The $interval service is bundled with Angular; You don’t need to upload new files or integrate anything with Protractor. Your tractor driver’s tests are most likely just fine, as are they.

What everyone means when they say that you use $interval is that you (or your developers) need to look at the source code of your application for $timeout or $http requests that happen repeatedly (in a recursive function, a loop or two functions that mistakenly call each other) or, possibly, a $http request that fails (this will be displayed in bright red in the Chrome Developer Console on the Network tab).

The reason the $timeout loop (and the failure of $http requests) is bad is because Protractor, at its discretion, will expect every $timeout callback and $http request to complete completely before it does anything . However, it will not wait for the completion of the $interval callbacks. $interval has almost the same syntax as $timeout , so it’s easy to switch from one to the other - the only difference is that $timeout runs once and $interval runs in a continuous loop. Official docs below:

$ timeout

$ interval

Another answer I posted lists a few more possibilities, as well as a link to the official Protractor list of reasons why this might happen: Waiting periods until the Transcavator synchronizes with the page after 50001 ms

I give you my 90% guarantee that this is one of these problems, but if you provide more information about your situation, I can give some specific advice.