Testing AngularJS with Selenium

Question

I have a SPA application on stack ASP MVC + AngularJS and I\'d like to test the UI. For now I\'m trying Selenium with PhantomJS and WebKit drivers.

This is a sample

Answer 1

We have had a similar issue where our in house framework is being used to test multiple sites, some of these are using JQuery and some are using AngularJS (and 1 even has a mixture!). Our framework is written in C# so it was important that any JScript being executed was done in minimal chunks (for debugging purposes). It actually took a lot of the above answers and mashed them together (so credit where credit is due @npjohns). Below is an explanation of what we did:

The following returns a true / false if the HTML DOM has loaded:

        public bool DomHasLoaded(IJavaScriptExecutor jsExecutor, int timeout = 5)
    {

        var hasThePageLoaded = jsExecutor.ExecuteScript("return document.readyState");
        while (hasThePageLoaded == null || ((string)hasThePageLoaded != "complete" && timeout > 0))
        {
            Thread.Sleep(100);
            timeout--;
            hasThePageLoaded = jsExecutor.ExecuteScript("return document.readyState");
            if (timeout != 0) continue;
            Console.WriteLine("The page has not loaded successfully in the time provided.");
            return false;
        }
        return true;
    }

Then we check whether JQuery is being used:

public bool IsJqueryBeingUsed(IJavaScriptExecutor jsExecutor)
    {
        var isTheSiteUsingJQuery = jsExecutor.ExecuteScript("return window.jQuery != undefined");
        return (bool)isTheSiteUsingJQuery;
    }

If JQuery is being used we then check that it's loaded:

public bool JqueryHasLoaded(IJavaScriptExecutor jsExecutor, int timeout = 5)
        {
                var hasTheJQueryLoaded = jsExecutor.ExecuteScript("jQuery.active === 0");
                while (hasTheJQueryLoaded == null || (!(bool) hasTheJQueryLoaded && timeout > 0))
                {
                    Thread.Sleep(100);
                timeout--;
                    hasTheJQueryLoaded = jsExecutor.ExecuteScript("jQuery.active === 0");
                    if (timeout != 0) continue;
                    Console.WriteLine(
                        "JQuery is being used by the site but has failed to successfully load.");
                    return false;
                }
                return (bool) hasTheJQueryLoaded;
        }

We then do the same for AngularJS:

    public bool AngularIsBeingUsed(IJavaScriptExecutor jsExecutor)
    {
        string UsingAngular = @"if (window.angular){
        return true;
        }";            
        var isTheSiteUsingAngular = jsExecutor.ExecuteScript(UsingAngular);
        return (bool) isTheSiteUsingAngular;
    }

If it is being used then we check that it has loaded:

public bool AngularHasLoaded(IJavaScriptExecutor jsExecutor, int timeout = 5)
        {
    string HasAngularLoaded =
        @"return (window.angular !== undefined) && (angular.element(document.body).injector() !== undefined) && (angular.element(document.body).injector().get('$http').pendingRequests.length === 0)";            
    var hasTheAngularLoaded = jsExecutor.ExecuteScript(HasAngularLoaded);
                while (hasTheAngularLoaded == null || (!(bool)hasTheAngularLoaded && timeout > 0))
                {
                    Thread.Sleep(100);
                    timeout--;
                    hasTheAngularLoaded = jsExecutor.ExecuteScript(HasAngularLoaded);
                    if (timeout != 0) continue;
                    Console.WriteLine(
                        "Angular is being used by the site but has failed to successfully load.");
                    return false;

                }
                return (bool)hasTheAngularLoaded;
        }

After we check that the DOM has successfully loaded, you can then use these bool values to do custom waits:

    var jquery = !IsJqueryBeingUsed(javascript) || wait.Until(x => JQueryHasLoaded(javascript));
    var angular = !AngularIsBeingUsed(javascript) || wait.Until(x => AngularHasLoaded(javascript));