Protractor : How to wait for page complete after click a button?

Depending on what you want to do, you can try:

browser.waitForAngular();

or

btnLoginEl.click().then(function() {
  // do some stuff 
}); 

to solve the promise. It would be better if you can do that in the beforeEach.

NB: I noticed that the expect() waits for the promise inside (i.e. getCurrentUrl) to be solved before comparing.