What is parameterization in QTP?

A parameter is a variable that is assigned a value from an external data source or generator. You can use the parameter feature in QuickTest to enhance your test by parameterizing the values that it uses.

You can parameterize values in steps, checkpoints in your test and values of action parameters.

If you wish to parameterize the same value in several steps in your test , you may want to consider using the Data Driver rather than adding parameters manually.

There are four types of parameters:

Test, action parameters: enable you to use values passed from your test , or values from other actions in your test.

In order to use a value within a specific action, you must pass the value down through the action hierarchy of your test to the required action. You can then use that parameter value to parameterize a step in your test .

Data Table parameters: enable you to create a data-driven test (or action) that runs several times using the data you supply. In each repetition, or iteration, QuickTest uses a different value from the Data Table.

Environment variable parameters: enable you to use variable values from other sources during the run session. These may be values you supply, or values that QuickTest generates for you based on conditions and options you choose.

Random number parameters: enable you to insert random numbers as values in your test.