QTP Descriptive programming - processing images

QTP Descriptive programming - processing images

Imagine a practical situation with QuickTest Professional (QTP).
There are several images on a web page. You need to:
  • get the number of all images on the page
  • process each image (for example, get its location)
Do you know how to do that? If not, do not sorrow :) I'm going to show and explain how to do that.
Also, I'm going to explain QTP Descriptive Programming concepts.

Let's start with Google Book Search page:

I have recorded simple QTP script which:
  1. uses http://books.google.com as initial URL
  2. clicks 'Google Book Search' image:
So, the recorded QTP script is:
Browser("Google Book Search").Page("Google Book Search").Image("Google Book Search").Click

Why have I recorded this script?
Because it will help us to investigate QTP Object Repository (OR) and properties of image.

Let's open Object Repository:
And then we check image's properties saved in Object Repository:
(click the image to enlarge it)

Using "html tag" property and its value "IMG", we can create general description for all images on the page. For that I use QTP Description object.
Description object is used to create a 'Properties' collection object. Each 'Property' object contains a property name and value pair.
Set descImage = Description.Create
descImage("html tag").value = "IMG"
The above code:
  1. creates Description object
  2. creates "html tag" property and sets its value to "IMG"

You can use the following code to get number of all images on a Web page:
Dim descImage, listImages

' Create description for all images on a Web page.
' For that we use "html tag" property and its value "IMG"
Set descImage = Description.Create
descImage("html tag").value = "IMG"

' Get all images which match the above description
Set listImages = Browser("Google Book Search").Page("Google Book Search").ChildObjects(descImage)

' Show the number of found images
MsgBox "Found images: " & listImages.Count

Execute the above code and you will get a result like:


How does Description object work?

Actually, QTP Description object is a part of QTP Descriptive Programming.
QTP Descriptive Programming (DP) is a way of working with objects without Object Repository (OR).

In our example, we couldn't know all images on a Web page in advance. So, we couldn't add them into QTP
Object Repository. Instead of that, we created Description object with required property and its value.

Tips:
We can use several properties assigned to Description object. For example:
Set descImage = Description.Create
descImage("html tag").value = "IMG"
descImage("image type").value = "Image Link"

When we pass Description object to ChildObjects QTP function, it returns the collection of child objects contained within the object (Page("Google Book Search")) and matched to Description object.
That's why we've got the list of all images on a page.


How to get additional properties of found images?

As you remember, we planned to process each image (get its location).
Let's open OR and check the additional recorded properties:
(click the image to enlarge it)

There are "src" property, which contains the URL address of the image file.
To get this property, we can use GetROProperty QTP function.

The final code is:
Dim descImage, listImages

' Create description for all images on a Web page.
' For that we use "html tag" property and its value "IMG"
Set descImage = Description.Create
descImage("html tag").value = "IMG"

' Get all images which match the above description
Set listImages = Browser("Google Book Search").Page("Google Book Search").ChildObjects(descImage)

' Show the number of found images
MsgBox "Found images: " & listImages.Count

' Show location ("src" property) of each image
For i = 0 To listImages.Count - 1
    MsgBox
"Image #:" & (i+1) & ": " & listImages(i).GetROProperty("src")
Next


This code shows a location of each image from a Web page.
There is a message box with a location of first image:
Then the second image:
and so on for others images...

Tips: Use the table of the most popular properties of Image QTP control:
#
Property name
Description
1
altThe object's tooltip text
2
href
The location to which the browser navigates when the image is clicked
3
nameThe object's name
4
srcThe image source, i.e., the URL address of the image file
5
visible
Indicates whether the object is visible.
Note: Only True and False are valid values for this property. 1 and 0 are not valid values.
Please, refer Quicktest Professional Help for detailed info on image identification properties .

Tips: You can use the same approach to work with others UI controls - Links, WebEdit, WebList, etc.


Related articles:


Dear readers,
Do you have interesting thoughts/articles/notes on automated testing?
Please, feel free to send them. Join our team!


--
Dmitry Motevich

15 comments:

satyam said...

The content presented for descriptive programming is good. in Future can we expect batch testing and driver scripts and recovery scenarios.


Regards,
Vinesh

Dmitry Motevich said...

2Satyam:
What do you mean with "batch testing"?

johnson said...

hi dmitry,
I worked your image exercise its really good. But i have one problem while i try to record the flash object.In OR
description value
windowid 105139264
regexpwndclass MacromediaFlashPlayerActiveX

like that created
During running:
It shows general run error.


my question is how to identify all flash objects and its "src"?
please mail me:johnsonraja@gmail.com

Dmitry Motevich said...

@johnson,
I'm afraid I cannot help you.
I've never worked with Flash from QTP.

Anonymous said...

Hi Dmitry,
I am trying to click on one image link in my web application.But all the time QTP can not identify that object. I have added image type, alt, html tag properties to image.After descriptive programming also its not clicking on that image.
Plz let me know if u have any idea.

Thanks!
Anon

revaraghavan said...

how to handle image link in descriptive programing

Dmitry Motevich said...

@revaraghavan,
Explained in others articles.
Search this blog.

ramya said...

Hi

It was very useful for my practice.
Can you solve one more problem for me.
In a webpage, there is a webtable which has 15 identical images. I have used Description.create method and used src property as per your example.
Then i used a for loop for clicking that image and coming back again to that page. After navigating back to the page QTP is not identifying the image and throws run error.

QTP is executing for the first iteration in the for loop and it fails for the second iteration.
If the second iteration value is given then the for loop executes correctly and again fails for the 3rd iteration.

sangeeta268 said...

The Content given in ur blog is really very nice.... it really helped me a lot

But i didnt found anything related to checking of recently added (runtime) data

for eg:-
I have to add admin users and after adding it is displayed on same page ..i need to add the admin and check if added admin user is displayed correclty or not.

could u please help me in creating script for checking above

Dmitry Motevich said...

@sangeeta268 (January 5, 2009),
You can use Output value. It's explained here:
QTP VIDEO - How to capture dynamic text?

Arunsinh said...

hi the code which is given by you is working fine at my end but i want to print name of all books and nuber of books according to name of book,so how can i do this can u please guide me?

Joel said...

Dmitry - This is good information, thanks for posting it.

I did get your example to run but I'm confused about one point. The script seems to work only when the Google Book Search image is in the repository. If I remove this from the repository, I get an error on the line:

Set listImages = Browser("Google Book Search").Page("Google Book Search").ChildObjects(descImage)



Perhaps I am not quite clear on where the OR leaves off and descriptive programming takes over. Or perhaps I'm doing something wrong. If you can clarify for me it would be greatly appreciated.

Joel said...

Dmitry - This is good information, thanks for posting it.

I did get your example to run but I'm confused about one point. The script seems to work only when the Google Book Search image is in the repository. If I remove this from the repository, I get an error on the line:

Set listImages = Browser("Google Book Search").Page("Google Book Search").ChildObjects(descImage)



Perhaps I am not quite clear on where the OR leaves off and descriptive programming takes over. Or perhaps I'm doing something wrong. If you can clarify for me it would be greatly appreciated.

revaraghavan said...

how to automate scroll bars and check the word wrap functioality

Dmitry Motevich said...

Dear Readers!
Thank you very much for you comments!

Since this article was published more than one year ago, I've just disabled an adding of new comments for this article.