Correlation in Jmeter

To remove the dynamic value of Http request correlation is used .Jmeter Script can be correlated with help of Regular expression Extractor .

I have Recorded the login action of IRCTC Website   and  Correlated  the  Session_ID and Engine_ID

Refer the Screenshot below to view the Dynamic  Session_ID and Engine_ID

https://www.irctc.co.in/cgi-bin/bv60.dll/irctc/booking/planner.do?screen=fromlogin&
BV_SessionID=   @@@@1502947175.1355111858@@@@                        &
 {Left Boundary }        Dynamic Value                                               { Right Boundary}

Steps  of Correlation :

1. Find the Dynamic Value in Http Request in this case  Session_ID and Engine_ID are Dynamic values
2. Add Regular expression Extractor for Seesion_ID  e.g : BV_SessionID=(.*?)&     check  number of occurrences in  Regular expression  tester     
3. Add Regular expression Extractor for BV_EngineID  e.g : BV_EngineID=(.+)">     check  number of occurrences in  Regular expression  tester 

   4. Provide the Template and Match No e.g for First match $1$ and 1 
   5. Replace BV_SessionID and  BV_EngineID values with Variable ${S} and ${E}
Refer the screen Shot Below

Jmeter Parametrization

Parametrization is process of generalizing some user data so as to use it for multiple  users ,  Suppose i want to  the Log in  in the application with different set of data then i have to Parametrize the Username and Password .

Steps : Parametrization of Username and Password

1. Go to  the HTTP sampler where Username and Password are defined >> Change them with variable
  ${user}  and ${password} 

2. Add Config Element >> CSV data Set config

3.  In CSV data Set config  add the variable  name as defined above  e.g user,password
4. Provide CSV file Location  e.g . C:/Login.csv
5. Add Username and Password data in  csv file .

In Jmeter  you can Parametrized any variable , User Input field , Server name , Port  etc .



 

Performance Testing With Open Source Tool JMeter

Performance Testing With Open Source Tool JMeter