Useful JMeter functions for scripting

Feb 21, 2013Download as pptx, pdf2 likes2,544 views

This is a small presentation to illustrate some of the basic JMeter functions/ features that can be used to accurately construct JMeter scripts

XPath
• XPath is used to navigate through elements and attributes in an XML
document
//form[@name='fm1']//input[@name='lt']/@value

XPath Extractor
//form[@name='fm1']//input[@name='lt']/@value

Regular Expression
• Matches string patterns
• input type="hidden" name="lt" value="(.*)"

Reference Name: MYREF
Regex: name="(.+?)" value="(.+?)"
Template: $1$$2$

$Reg Ex • ( ) - grouping • [ ] - character classes • { } - repetition • * + ? - repetition • . - wild-card character • - escape character • | - alternatives • ^ $ - start and end of string or line$

$Functions • __log() • __threadNum()- The thread number function simply returns the number of the thread currently being executed ${__log(${__threadNum},,,******Thread_Number is*********:: )}$

• __machineName()
The machineName function returns the local host name

• __RandomString ()

RandomString(var1,var2,var3),where:
var1 - Random string length
var2 - Chars to use for random string generation
var3 - Name of variable in which to store the result (optional)

Database Testing
• Step 1: Put downloaded JDBC driver (sqljdbc4.jar) under "JMeter/lib/" directory.
• Step 2 : Adding JDBC Connection Configuration

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Useful JMeter functions for scripting

1. JMeter Features By Tharinda Liyanage

2. XPath • XPath is used to navigate through elements and attributes in an XML document //form[@name='fm1']//input[@name='lt']/@value

4. XPath Extractor //form[@name='fm1']//input[@name='lt']/@value

5. • JMeter variable – ${t}

6. Regular Expression • Matches string patterns • input type="hidden" name="lt" value="(.*)" Reference Name: MYREF Regex: name="(.+?)" value="(.+?)" Template: $1$$2$

7. Reg Ex • ( ) - grouping • [ ] - character classes • { } - repetition • * + ? - repetition • . - wild-card character • - escape character • | - alternatives • ^ $ - start and end of string or line

8. Functions • __log() • __threadNum()- The thread number function simply returns the number of the thread currently being executed ${__log(${__threadNum},,,******Thread_Number is*********:: )}

9. • __machineName() The machineName function returns the local host name

10. • __RandomString () RandomString(var1,var2,var3),where: var1 - Random string length var2 - Chars to use for random string generation var3 - Name of variable in which to store the result (optional)

11. • Counter

12. Database Testing • Step 1: Put downloaded JDBC driver (sqljdbc4.jar) under "JMeter/lib/" directory. • Step 2 : Adding JDBC Connection Configuration

13. • Step 3: Adding JDBC Request

Useful JMeter functions for scripting

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