Synchronization in QTP

      A synchronization point instructs QTP to wait until certain response from the application during playback.Synchronization point is required due to reason that when a test is run, the application may not always respond with the same speed. For example, it might take some extra time for below activities

• for a progress bar to reach 100%
• for a status message to appear
• for a button to become enabled
• for a window or pop-up message to open

      Synchronization can be used to ensure that QTP waits until the application is ready  before performing a certain step in following ways:

• Timeout Value Modification
• Using WaitProperty
• Using Wait  Statement
• Using Exist Statement

Timeout Value modification

Object Synchronization timeout  Sets the maximum time (in seconds) that QTP waits for an  
object to load before running a step in the test.

To define the Object  Synchronization timeout, Access  File > Settings > Run.

Using WaitProperty

Adding a synchronization point instructs QTP to pause the test until an object property  achieves the value specified.

The below dialog box enables to insert a WaitProperty statement to synchronize test.

How to Access:

• Start a recording session.
• Display the screen or page in application that contains the object for which a synchronization point needs to be inserted.
• In the QTP window, select Insert >Synchronization Point.

WaitProperty is displayed in Expert View as shown below

Browser(".").Page("…").WebElement("…").WaitProperty "visible", true, 10000

Using Wait and Exist Statement

Exist and/or Wait statements can be used to instruct QTP to wait for a window to open or an object to appear

Exist Statement:

Exist statements return a Boolean value indicating whether or not an object currently exists

Eg:  blnExist = Browser(“…”).Page(“…”).Object.exist

Wait Statement:

Wait statements instruct Quick Test to wait a specified amount of time before proceeding to the next step.

Eg:  Wait(30)

Below code shows an example of Using Wait and Exist Statement for synchronization.

blnDone=Window("Flight Reservation").Dialog("Flights Table").Exist

counter=1

While Not blnDone

Wait (2)

blnDone=Window("Flight Reservation").Dialog("Flights Table").Exist

counter=counter+1

If counter=10 then

blnDone=True

End if

Wend