WebAii code to access the whole document object.

[Rad]

Hi

We are trying to access the document object through WebAii c# code, that is in a unit test case.
we want to get the collection of images through the document object. We have a javascript library for webtrends that inserts images as external files. This is present in the document.images collection...but is not seen in the html source.

What is the code to see that the image exists, so that we know for sure that a webtrend call happens.

Thanks
Rad.

[Cody]

Hello Rad,

WebAii does not give you direct access to the document object, but can search the DOM for you and return found elements in wrapper classes. For example try this code after all the images are already loaded in the browser:

IList<HtmlImage> imageList = ActiveBrowser.Find.AllByTagName<HtmlImage>("img");
foreach(HtmlImage anImage in imageList)
{
    // Do something with each image in the list
}

This usually works because Test Studio searches the current DOM, not the original HTML sent to the browser.

Regards,
Cody
the Telerik team

[Rad]

Hi Telerik Team,

That is the point, there is no img tag for this external image that gets created by the webtrends javascript file.
It somehow appends it to the documents.images object but its not seen when i view source.
Its weird.

Radha.

[Cody]

Hello Rad,

document.images is quite literally a collection of all images contained in the browsers current DOM i.e. it's a list of all <img> tags currently present. Keep in mind that what the current DOM structure looks can have very little resemblance to what you see via View Source. View Source only shows you want the web server sent to the browser. It does not show you all the DOM changes that took effect as a result of JavaScript code running i.e. webtrends. The browser is not going to show an image unless there is an <img> tag in the live DOM, which is what Test Studio uses.

Did you try the code I sent you? I think you'll be surprised to find there really are a number of <img> tags in the live DOM as Test Studio scans it (once the images are loaded by the browser and JavaScript).

Kind regards,
Cody
the Telerik team

[Rad]

nope Cody,

it doesn't work. I clearly see the image dcs.gif that gets added by webtrends in the chrome debugger under Resources tab,
Frames> BrowseByPage > Images > dcs.gif

but i do not see this .gif in the IList<HtmlImage> object

:(((

The only way i got around this problem, is by using a javascript function that checks for the existence of this image, I execute this from the test case using

var jsRetValue = Actions.InvokeScript("sl.sc.tracking.checkIfTrackImageExists();");

I wish that i could do this in the code instead. 

Radha..

[Cody]

Hello Rad,

Another possibility is that the image you're after is located in an <iframe>. ActiveBrowser.Find only scans the main page, it does not scan any frames contained in that page. You have to specifically target the right frame to get at the elements on it. For example:

IList<HtmlImage> imageList = ActiveBrowser.Frames[1].Find.AllByTagName<HtmlImage>("img");
foreach(HtmlImage anImage in imageList)
{
    // Do something with each image in the list
}

This will scan the second <iframe> (since Frames is 0 based).

The Chrome Developer tools is great for helping you figure out where an element is and how to locate it. It will show you the live DOM in the browser. You should be able to locate your tracking image and determine which iframe it's located in.

If you can send me a Fiddler trace of the page being loaded, I'll be able to investigate this as well and give you exact code for finding the tracking image.

Greetings,
Cody
the Telerik team

[Rad]

So i looked at the 2 frames in the document object and it does not contain the image. I have attached the snapshot of what i see in the chrome debugger.

I am after dcs.gif . (it is highlighted) and it is not present in any frames.

Also I want to clarify that we have a javascript object that holds a collection of images. This holds the dcs.gif image and as mentioned is not seen in html source...

The fiddler trace is below (cannot attach the session file with the message).
In line number 31 the image makes a webtrends call

#    Result    Protocol    Host    URL    Body    Caching    Content-Type    Process    Comments    Custom    
1    200    HTTP    localhost    /Meijer/Entry/LandingContent?storeid=2648165&sneakpeek=N&listingid=0    84,716    private      text/html; charset=utf-8    chrome:6152            
2    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/button_input_skins.css    20,218    private      text/css    chrome:6152            
3    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/site_wide.css    17,864    private      text/css    chrome:6152            
4    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/entry.css    3,012    private      text/css    chrome:6152            
5    200    HTTP    Tunnel to    s-static.ak.facebook.com:443    0            chrome:6152            
6    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/sbscroller.css    2,714    private      text/css    chrome:6152            
7    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/vertical_paddles.css    1,217    private      text/css    chrome:6152            
8    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/nuep_nocontent.css    1,898    private      text/css    chrome:6152            
9    504    HTTP    static.crowdscience.com    /start-4b95912b7f.js    512        text/html; charset=UTF-8    chrome:6152            
10    200    HTTP    uid.shoplocal.com    /uid.aspx?callback=sl.sc.tracking.uidCallback    99    private      text/html; charset=utf-8    chrome:6152            
11    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/bbpage.css    7,261    private      text/css    chrome:6152            
12    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/listingdetail.css    7,352    private      text/css    chrome:6152            
13    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/storelocation.css    4,081    private      text/css    chrome:6152            
14    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/bbgrid.css    5,240    private      text/css    chrome:6152            
15    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/shoppinglist.css    3,773    private      text/css    chrome:6152            
16    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/Styles/modal_dialog.css    204    private      text/css    chrome:6152            
17    200    HTTP    localhost    /Meijer/Entry/GetViewBag?storeid=2648165&sneakpeek=N&listingid=0&callback=sl.sc.application.setViewBag    568    private      application/javascript; charset=utf-8    chrome:6152            
18    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/images/Meijer_sprite_BUTTONS.png    47,675    private      image/png    chrome:6152            
19    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/images/Meijer_sprite_LOGOS.png    15,480    private      image/png    chrome:6152            
20    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/images/Meijer_sprite_A.png    6,625    private      image/png    chrome:6152            
21    304    HTTP    localhost    /Areas/SC5/_Template_201202/Content/Images/transparent/transparent1x1.png    0    max-age=21600          chrome:6152            
22    200    HTTP    localhost    /SC5/_Template_201202/Content/Images/transparent/transparent1x1.png    110    private      image/png    chrome:6152            
23    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/images/back_top.png    219    private      image/png    chrome:6152            
24    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/images/back_middle.png    152    private      image/png    chrome:6152            
25    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/images/back_bottom.png    230    private      image/png    chrome:6152            
26    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/images/Meijer_Map.png    43,965    private      image/png    chrome:6152            
27    200    HTTP    localhost    /SC5/MeijerGroup/Meijer/Content/images/Meijer_Map_Text.png    3,670    private      image/png    chrome:6152            
28    200    HTTP    www4.meijer.com    /js/jquery.cookie.js?_=1363116574103    1,477        application/x-javascript    chrome:6152            
29    200    HTTP    container.pointroll.com    /event/?ctid=F08ADB3D-AE61-4627-A94C-0E42D5F82468&av=5774&eid=1362252574110.3872&ev=&item=&q=&val=&r=0.3251938030589372    898    private      text/html; charset=utf-8    chrome:6152            
30    200    HTTP    www4.meijer.com    /js/storeIdConvert.js?_=1363116574295    1,171        application/x-javascript    chrome:6152            
31    200    HTTP    statse.webtrendslive.com    /dcsby70ep100000086e12w4sw_6s7y/dcs.gif?&dcsdat=1363116574213&dcssip=localhost&dcsuri=/Meijer/Entry/LandingContent&dcsqry=%3Fstoreid%3D2648165%26sneakpeek%3DN%26listingid%3D0&WT.tz=-5&WT.bh=14&WT.ul=en-US&WT.cd=32&WT.sr=1680x1050&WT.jo=Yes&WT.ti=Berwyn%20Meijer%20Weekly%20Ads%20--%20Top%20Brands%20at%20Low%20Prices%20%7C%20Shop%20Today%20and%20Save&WT.js=Yes&WT.bs=1680x959&WT.fi=Yes&WT.fv=11.6&WT.sp=@@SPLITVALUE@@&WT.co_f=27a97a0aa2dffdeab501363111948174&WT.vt_sid=27a97a0aa2dffdeab501363111948174.1363111948174&WT.cg_n=Entry%20Page&WT.cg_s=entry&WT.si_p=main&WT.si_n=listconv&sl_retailer=Meijer&sl_storename=Meijer%207111%20Cermak%20Rd.%20Berwyn%2C%20IL%2060402&sl_storeid=2648165&LanguageID=1&sl_zipcnt=1&sl_zip=60402&sl_device=pc&sl_orientation=landscape    67    no-cache  Expires: -1    image/gif    chrome:6152           

32    200    HTTP    ev.ads.pointroll.com    /event/?ss=44FD520E-6860-456C-B751-C7AD156362E5&av=5774&eid=1362252574110.3872&ev=&item=&q=&val=&r=0.5733151696622372    0    no-cache  Expires: -1        chrome:6152            
33    302    HTTP    20502103p.rfihub.com    /ca.gif?rb=621&ca=20502103&ra=REPLACE_ME_WITH_YOUR_CACHE_BUSTING    0    no-cache  Expires: Thu, 01 Jan 1970 00:00:00 GMT        chrome:6152            
34    200    HTTP    20502101p.rfihub.com    /ca.gif?rb=621&ca=20502101&ra=REPLACE_ME_WITH_YOUR_CACHE_BUSTING    42    no-cache  Expires: Thu, 01 Jan 1970 00:00:00 GMT    image/gif    chrome:6152            
35    200    HTTP    www4.meijer.com    /weeklyads/takeover/settings.js?_=1363116576737    225        application/x-javascript    chrome:6152            
36    200    HTTP    www4.meijer.com    /weeklyads/meijer_page_scripts.js?_=1363116576799    1,084        application/x-javascript    chrome:6152            
37    200    HTTP    www.facebook.com    /fr/u.php?p=143062565833368&m=671599296113799582&t=2592000    73    public, max-age=0  Expires: Tue, 12 Mar 2013 12:29:39 PDT    image/gif    chrome:6152            
38    304    HTTP    www.meijer.com    /favicon.ico    0        text/plain; charset=UTF-8    chrome:6152            
39    301    HTTP    g.msn.com    /1ewenus50/news7?noCacheDummyParam=67fe412a-0365-4b6d-a164-17aa9f80ef50    0    no-cache, must-revalidate  Expires: Fri, 01 Jan 1990 00:00:00 GMT        mswinext:7688            
40    200    HTTP    rss.msnbc.msn.com    /id/3054049/device/rss?noCacheDummyParam=67fe412a-0365-4b6d-a164-17aa9f80ef50    786    public  Expires: Tue, 12 Mar 2013 19:39:20 GMT    application/rss+xml; charset=utf-8    mswinext:7688            

[Cody]

Hi Rad,

I did some more research on this using this page as a working example:
http://kb.webtrends.com/Support/SolutionDetail.aspx?Id=50130000000CBu3AAG&r=1

I have a much clearer understanding of what's going on here. You're right, the tracking image is not added to the DOM at all. JavaScript adds it to an internal memory only collection of images using this JavaScript code:

WebTrends.prototype.dcsCreateImage=function(dcsSrc){
    if (document.images){
        this.images[this.index]=new Image();
        this.images[this.index].src=dcsSrc;
        this.index++;
    }
    else{
        document.write('<IMG ALT="" BORDER="0" NAME="DCSIMG" WIDTH="1" HEIGHT="1" SRC="'+dcsSrc+'">');
    }
}

Since the image you're after only exists in the JavaScript world, invoking JavaScript will be the only way to get at it. I found I can get at the src value for dcs.gif image using this line of code in Test Studio:

string answer = Actions.InvokeScript<string>("_tag.images[0].src");

What I get back is this:

http://statse.webtrendslive.com/dcswxkx6r100004rra9vt8h0n_9g3z/dcs.gif?&dcsdat=1363124956392&dcssip=kb.webtrends.com&dcsuri=/Support/SolutionDetail.aspx&dcsqry=%3FId=50130000000CBu3AAG%26r=1&WT.co_f=757745389389228129&WT.vtid=757745389389228129&WT.vtvs=1363123120149&WT.tz=-5&WT.bh=16&WT.ul=en-us&WT.cd=24&WT.sr=1680x1050&WT.jo=Yes&WT.ti=How%20to%20test%20a%20SmartSource%20Data%20Collector%20installation%20|%20Webtrends%20Knowledge%20Base&WT.js=Yes&WT.jv=1.3&WT.ct=lan&WT.hp=0&WT.bs=1052x1237&WT.fv=10.0&WT.slv=Unknown&WT.tv=8.6.0&WT.dl=0&WT.ssl=0&WT.es=kb.webtrends.com/Support/SolutionDetail.aspx&WT.cg_n=Support&WT.cg_s=KnowledgeBase&WT.vt_f_tlh=1363123188&support=Unassisted&unassisted=1

Is this getting close? What information are you after pertaining to this particular tracking image?

P.S. By "sending me a Fiddler trace" what I really meant was save the trace to a .SAZ file and attach that file (after putting into a .zip file first). I can use that to simulate your web server and investigate deeper how your web page is behaving, along with the JavaScript.
Regards,
Cody
the Telerik team

[Rad]

This is good Cody,

Thanks. So i used my earlier solution of creating a javascript function that checks for the existance of this image in the javascript collection object.

Thanks.

[Cody]

Hello Rad,

Sounds good. Sorry it took a while to get to the bottom of this. I learned something too in this process I hadn't seen before.

Kind regards,
Cody
the Telerik team

[Lee]

Yes, I agree with you, but every time I can not find the cause of the error, view the source code is the best way to pass it to know what the value is incorrect, or no value is passed in.

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