Pages

Wednesday, March 7

Recovery Scenarios in QTP

Hello Friends,

In this post, we will look into the Recovry Scenario provided in QTP.

What is Recovery Scenario?

Recovery Scenarios are used to recover the test from unexpected errors and continue with execution.


What is unexpected errors?

Unexpected error or exception is a unpredictable/unexpected error which occurs suddenly during execution of the script. These kind of errors makes your script fail/stop/paused.


Atonomy of Recovery Scenarios?

A recovery scenario consists of the following three patrs:


1. Trigger Event
2. Recovery Operations
3. Post-Recovery Test Run Option


Trigger Event:

The event that interrupts your run session. For example a window that may pop up on screen.

Recovery Operations:

The operations to perform to enable QTP to continue running the test after the trigger event interrupts the run session. For example, clicking an OK button in a pop-up window.

Post-Recovery Test Run Option:

The instructions on how QTP should proceed after the recovery operations have been performed, and from which point in the test QTP should continue. For example, you may want to restart a test from the beginning, or skip a step entirely and continue with the next step in the test. Recovery scenarios are saved in recovery scenario files having the extension .qrs. A recovery scenario file is a logical collection of recovery scenarios, grouped according to our specific requirements.


Recovery scenario manger can handle following four events:

1. Pop-up window: To handle unwanted pop ups.

2. Object state: To handle object related errors at runtime.

3. Test run error: To handle vb script statement errors at runtime.

4. Application crash: To handle crashed applications at runtime.


1. Recovery Scenario for Pop-up Window:

Steps to follow to handle unwanted pop-ups:

Trigger Event Steps:

Resources Menu -->Recovery Scenario Manager -->New -->Next -->Select “Popup Window” as Trigger event -->Next -->Click on Hand Icon -->Show unwanted window with Hand icon -->Next -->Next -->(Continue below mentioned steps)

Recovery Operations steps:

Select function call as Recovery Operation -->Next {Open Notepad -->Save empty file with .vbs extension} -->Browse the .vbs fie path -->Next -->Uncheck Add another Recovery Operation -->Next -->(Continue below mentioned steps)

Post-Recovery Test Run Option Steps:

Select Post-Recovery Test Run Option {Repeat current step and continue, Proceed to Next step, Proceed to Next Action, Proceed to next test iteration, Restart current test run, Stop the Test Run} -->Next -->Enter Scenario Name -->Next -->Select Option --> Finish -->Save the scenario with “.qrs” -->Record required Recovery Operation {Click ok, Click Cancel} take the script into function -->Save the library file -->Click Run


2. Recovery Scenario for Object State:

Steps to follow to check Property values of an object in the application match specified values. User can specify property values for each object in the hierarchy.

Trigger Event steps:

Resources Menu --> Recovery Scenario Manager --> New --> Next --> Select “Object state Window” as Trigger event --> Next --> Click on Hand Icon --> Show object with and icon --> Next --> Next-->select object property with value (enabled ,false)-->click next --> (Continue below mentioned steps)

Recovery Operations steps:

Select function call as Recovery Operation --> Next {Open Notepad --> Save empty file with .vbs extension} --> Browse the .vbs fie path --> Next --> Uncheck Add another Recovery Operation --> Next -->(Continue below mentioned steps)

Post-Recovery Test Run Option Steps:

Select Post-Recovery Test Run Option {Repeat current step and continue, Proceed to Next step, Proceed to Next Action, Proceed to next test iteration, Restart current test run, Stop the Test Run} --> Next--> Enter Scenario Name --> Next --> Select Option -->Finish --> Save the scenario with “.qrs” --> Record required Recovery Operation {Click ok, Click Cancel} take the script into function --> Save the library file --> Click Run


3. Recovery Scenario for Test Run Error:

Steps to follow to check if test does not run successfully then Test Run Error can be raised.

Trigger Event steps:

Resources Menu -->Recovery Scenario Manager -->New -->Next -->Select “Testrunerror Window” as Trigger event -->Next -->select any error o -->Next -->Next -->(Continue below mentioned steps)

Recovery Operations steps:

Select function call as Recovery Operation -->Next {Open Notepad -->Save empty file with .vbs extension} -->Browse the .vbs fie path -->Next -->Uncheck Add another Recovery Operation -->Next -->(Continue below mentioned steps)

Post-Recovery Test Run Option Steps:

Select Post-Recovery Test Run Option {Repeat current step and continue, Proceed to Next step, Proceed to Next Action, Proceed to next test iteration, Restart current test run, Stop the Test Run} -->Next >Enter Scenario Name >Next -->Select Option --> Finish >Save the scenario with “.qrs” -->Record required Recovery Operation {Click ok, Click Cancel} take the script into function -->Save the library file -->Click Run
 

4. Recovery Scenario for Application Crash:

Steps to follow to check application failure during Test Run.

Trigger Event steps:

Resources Menu --> Recovery Scenario Manager--> Click New--> Click Next -->Select Application Crash as Trigger event-->Next -->Select selected executable application-->Next --> (Continue below mentioned steps)

Recovery Operations and Post-Recovery Test Run Option Steps:

Select Recovery Operation {Keyboard, Mouse Operation,Close Application Process, function Call, Restart, Microsoft Windows} -->Next -->If you want to check Add another operation else uncheck-->Next -->Next -->Enter Scenario Name -->Next-->Select Option -->Finish -->Close -->Save the scenario with “.qrs”


Error handling(on error resume next)   vs   Recovery Scenarios ?

If you can predict that a certain event may happen at a specific point in your test or component, it is recommended to handle that event directly within your test or component by adding steps such as If statements or optional steps or "on error resume next", rather than depending on a recovery scenario. Using Recovery Scenarios may result in unusually slow performance of your tests.They are designed to handle a more generic set of unpredictable events which CANNOT be handled pragmatically.

Example:



On error Statements

Following are error statements :

1. On Error Resume Next
2. On Error Go to 0
3. err.number
4. err.description

On Error Resume Next:

On Error Resume Next statement enables the Error handling in the code.If there is error in the code "On error Resume Next" ignores it and continue with next line of code.

On Error Go to 0:

On error got to 0 statement disables error handling we have previously enabled it by using On Error resume Next.

err.number and err.description:

Provides the error number and the description of the error

4 comments:

  1. very well explained.. thanks a lot.

    ReplyDelete
  2. more than enough....thanks alot

    ReplyDelete