useful snippets for protractor

Protractor.js

//when you expect error on some command:
element.click().then(function(){
            console.log('shouldn`t get here raise error:');
            expect(1).toBe(0);
        },function(err){
            console.log('expected error, as element should not receive click');
        });
        
        
//Expecting some URL change:
urlChanged = function(url) {
        return function () {
            return browser.getCurrentUrl().then(function(actualUrl) {
                return url != actualUrl;
            });
        };
    };
var urlNow = browser.getCurrentUrl();
browser.wait(com.urlChanged(urlNow), 5000);


//loop for promises:
var i = 0;
(function loop() {
    if (i < 10) {
        //some function call
        element.click().then(function(){
            // promise is evalled as success, lets call loop again
            i++;
            loop()
        })
    }
});