QTP - Environment Variables

QTP & Environment Variables

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›  QTP – VBScript (Part 7)

›  QTP – VBScript (Part 8)

›  QTP – VBScript Examples (Part9)

›  QTP – VBScript Examples (Part10)

›  QTP – Environment Variables

›  QTP – Arrays

›  QTP – Error Handling

›  QTP – Functions

›  QTP – Frameworks

›  QTP – MORE….

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G A Reddy

QuickTest QTP

http://QuickTestQTP.BlogSpot.com

Environment variables

› Environment variables represents the QTP Environment object, which enables you to set or retrieve the value of environment variables

› Environment variables are like global variables

› Environment variables can be accessed through out from any part of the script.

› The values of these variables remains same irrespective of the number of iterations (unless you change them through scripting).

› These variables can prove to be very useful when you want a variable to be shared across various reusable actions/tests or functions.

Environment Variable - Types

› Built-in

› Built-In: These are the internal variables that are provided by QTP.

› These provide valuable information like the path of the folder where test is located, the path of the results folder, the name of the action iteration or the OS version.

› User Defined.

› These can be further defined into two types.

› User defined Internal

› These are the variables that we define within the test.

› These variables are saved with the test and are accessible only within the test in which they were defined.

› Example:

› AppURL=Environment.value(“URL”)=http://newtours.demoaut.com

› SystemUtil.Run AppURL

› User defined External

› These are the variables that we predefine in the active external environment variables file.

› These can be created using a list of variable-value pairs in an external file in .xml format.

› Example:

› MyEnvFile = “C:/EnvVars.xml”

› Environment.LoadFromFile MyEnvFile

› Browser().Page().WebEdit(“userName”).set Environment.value(“Uname”)

Environment variables

›  To set the value of a user-defined, environment variable:

›  Environment (VariableName) = NewValue

›  To retrieve the value of a loaded environment variable:

›  CurrValue = Environment (VariableName)

›  Example:

›  Environment.Value("MyVariable")=10

›  MyValue=Environment.Value("MyVariable")

Environment variables: Methods and Properties

› Associated Methods and Properties

› ExternalFileName Property

› LoadFromFile Method

› Value Property

ExternalFileName

› It returns the name of the loaded external environment variable file specified in the Environment pane of the Test Settings dialog box.

› If no external environment variable file is loaded, returns an empty string.

› Syntax

› Environment.ExternalFileName

› Example:

› 'Check if an External Environment file is loaded and if not, load it.

› fileName = Environment.ExternalFileName

› If (fileName = "") Then

›     Environment.LoadFromFile("C:\Environment.xml")

› End If

› 'display value of one of the Environment variables from the External file

› msgbox Environment("MyVarName")

LoadFromFile

› It loads the specified environment variable file.

› The environment variable file must be an XML file using the following syntax:

› Syntax

› Environment.LoadFromFile(Path)

› Example:

›  Environment.LoadFromFile("C:\QuickTest\Files\MyVariables.xml")

›  Environment.LoadFromFile("C:\MyVariables.xml")

Value

›  Sets or retrieves the value of environment variables.

›  You can retrieve the value of any environment variable.

›  You can set the value of only user-defined, environment variables.

›  Syntax

›  To set the value of a user-defined, environment variable:

›  Environment.Value(VariableName) = NewValue

›  To retrieve the value of a loaded environment variable:

›  CurrValue = Environment.Value (VariableName)

›  Example:

›  Environment.Value("MyVariable")=10

›  MyValue=Environment.Value("MyVariable")

Environment Variable file structure

› <Environment>

› <Variable>

›        <Name> UN </Name>

›        <Value>GAReddy</Value>

› </Variable>

› <Variable>

›        <Name> Pwd</Name>

›        <Value>GAReddy</Value>

› </Variable>

› </Environment> 

Environment Variables @ Scripts

Getting the Environment variables

›  ' How to get the Environment variables

›  myname=Environment.Value("name")

›  'OR

›  myname=Environment(“Uname")

›  ‘Assigning Env Variable values

›  Browser().Page().WebEdit(“userName”).set Environment.value(“Uname”)

›  ‘OR

›  Browser().Page().WebEdit(“userName”).set myname

Check if the specific variable exists in Env file

›  'Checking if the specific variable exists on the Environment file

›  On Error Resume Next

›  myvar=Environment("name")

›  If Err.Number <> 0 Then

›  MsgBox "var does not exist"

›  MsgBox err.number

›  MsgBox Err.Value

›  else

›  MsgBox "var Exists"

›  End If

Adding Environment variables dynamically

› ' Adding Environment variables dynamically

› Environment("MyNewVar")="I am new Environment Variable"

› ' To check the above one

› On Error Resume Next

› myvar=Environment("MyNewVar")

› If Err.Number <> 0 Then

› MsgBox "var does not exist"

› MsgBox err.number

› MsgBox Err.Value

› Environment("MyNewVar")="Iam new var"

› else

› MsgBox "var Exists"

› End If

Empty the Environment value
Loading Environment files dynamically

› ' To empty the Environment value

› Environment("MyVar")=Nothing

›  ' Loading Environment files dynamically

›  Environment.LoadFromFile EnvFile

Check if an External Environment file is loaded

›  'Check if an External Environment file is loaded and if not, load it.

›  fileName = Environment.ExternalFileName

›  If (fileName = "") Then

›  Environment.LoadFromFile("D:\EnvVars.xml")

›  End If

›  'display value of one of the Environment variables from the External file

›  msgbox (Environment("UN"))

›  '‘Second method

›  On Error Resume Next

›  fileName = Environment.ExternalFileName

›  If Err.Number <> 0Then

›      MsgBox "The Specified Environment File  does not exist"

›  '    Environment.LoadFromFile("C:\EnvironmentFile.xml")

›  Environment.LoadFromFile("D:\EnvVars.xml")

›  Else

›       MsgBox "The Specified Environment File exist"

›  End If