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  • QTP Regular Expression

    What is the significance of regular expression in QTP?

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    priyankvyas  

    • Member Since Dec-2008 | May 6th, 2009


    Regular expression is always used to make our search globalize.

    To execute the test in QTP every object is searched in the object repository (OR). In real time applications some object's properties always keep changing, so at the time of execution script fails. To overcome it we use "regular expression" for that particular object's property. For example:

    1) Record a test where you are inserting one order and than faxing the same order.

    2) The order number that is generated during recording may 21 and "Fax Order window title" is generated and saved into OR as "Fax Order No. 21"

    3) Now execute the same test, the script will fail because this time order no is modified as 22 and accordingly "Fax Order window title" is modified as "Fax Order No. 22".

    4) This time the object "Fax Order No. 22" is not identified or you can understand object is not matched (find) into OR.

    5) To make this search better we modify the text property of object into OR as "Fax Order No.*" this will search all the occurrences of window that has text as "Fax Order No"

    6) We can also write it as "Fax Order No. [0-9]" because fax order no is a numerical value and this will search only numbers after "Fax Order No. "

    So this is the purpose of regular expression in QTP.

    aarati

    • Nov 9th, 2009

    Using RE we can make the QTP to recognize same object with its varying name.For example, a window having title as "Employee NO. 7"If I want to pass data to multiple Employee No. Windows, So I have to use RE as "Employee No..*" in Object Repository..