I have a scenario in which user logon into system and submit some entry , but as system does not allow to submit duplicate records , i need to change on of filed value .
How this can be done , an sample code will be much more helpfull.
You have a number of options, feel free to choose the one which suits you best:
__threadNum() function - returns current user number, i.e. 1 for first user, 2 for second, etc.
__Random() function - returns a random number in the given range
__time() function - returns current timestamp in the different formats
__UUID() function - returns random (type 4) UUID structure - probably the most "unique" option
You can use functions anywhere in your test plan, i.e. directly as a parameter value.
See the following references:
Function helper dialog - a tool which helps to generate correct JMeter Function Syntax
JMeter Functions and Variables
How to Use JMeter Functions
you can map columns of a csv file with CSV_Data_Set_Config by setting variables names to : user,pwd...
after that you can use them to logon like this '${user}'
Related
I am using timestamp as a value in my script to keep it unique and distinguishable in each of the iterations. I am using ${__time(/1)} function and storing it in the user defined variable inside a transaction controller and later using same variable in other transactions and json payload as well. This works well for single iteration.
I expected that in each iteration timestamp will be updated. but I can see that in each iteration same timestamp is being used. How could I make it updating timestamp in every iteration as I need to use only one timestamp value in an iteration and not repeating in successive iterations.
The User-Defined Variable config element is processed only once at the start. It is processed after the test plan. It is not suitable for your use case.
UDVs should not be used with functions that generate different results each time they are called. Only the result of the first function call will be saved in the variable.
There could be a number of options.
Using User Parameters Pre-processor
You may set the Update Once Per Iteration to suit your requirement.
Using Set Variables Action plugin
Set the value in JSR223 Pre-processor
You may place the controller below the Test Plan.
As per User Defined Variables documentation:
Note that all the UDV elements in a test plan - no matter where they are - are processed at the start.
So the variable is evaluated only once, when the test starts, if you want it to return you the current timestamp each time it's called - just use __time() function directly where required, there is no need to declare it as the variable.
More information on JMeter Functions concept: Apache JMeter Functions - An Introduction
I also don't think that /1 bit in your ${__time(/1)} function does anything meaningful, maybe it worth considering removing it completely
Adding value to a variable will save time only once on load, you can put the time function inside payload to get different times
Another option is to use pre processor as User Parameters over User Defined Variables
For defining variables during a test run, see User Parameters. UDVs are processed in the order they appear in the Plan, from top to bottom
I have written a regular expression inorder to get all the values. Now i have all the values. I want to use the extracted values in a sampler under a loop controller and every hit it has to pic dynamic value.
This will have the dynamic values around 78
I want to Iterate 78 times
Every hit this has to pic unique data
Please help me as i am stuck here to complete the script.
The most suitable test element is ForEach Controller
Given the following variables defined:
Just add a ForEach Controller and configure it as follows:
That's it, you should be able to access each and every match as ${someVar} where required
check out Using Regular Expressions in JMeter article for example use case
If you want to keep the current setup with the Loop Controller - you can refer each and every variable using __V() and __intSum() functions combination like:
${__V(_Webp_${__intSum(${__jm__Loop Controller__idx},1,)},)}
How do I generate a timestamp and put it in a variable in jmeter?
So that the variable can be passed in the URL.
Add the following function wheerever you want to send the Unix based timestamp:
${__time(,curTime)}
you can refer the value using ${curTime} in later requests.
Example:
HTTP Sampler
in View Results Tree
You can use Function Helper Dialog (in Options), to generate the code:
Note: you can also save the value using name of the variable (second row), so later you can refer the same value.
Note: you can also format the time, based on your needs (first row).
Reference:
http://jmeter.apache.org/usermanual/functions.html#__time
I just wanted that ${__time(yyyyMMddHHmmss)} should have its new value for each new user in Http samplers
What I have tried is:
* Used loop controller
* Used counter config element
etc. but still unable to produce a new values for this time function
Regards,
AA
__time() function returns current timestamp either in milliseconds since Unix epoch start or according to pattern you specify. The function respects SimpleDateFormat patterns.
The weak point of your approach is that when it comes to high loads you can have more than one user calling this function at the same second you will get identical timestamps so I would suggest one of the following approaches:
Increase precision of your __time() function to milliseconds level like:
${__time(yyyyMMddHHmmss---SSS)}
Concatenate __threadNum() function with __time() function so each timestamp is followed by current virtual user number like:
See How to Use JMeter Functions posts series for more information on enhancing your JMeter tests with Functions.
I creating script which let me to get values from database.
Now, when I'm executing query oracle returning me too many values.
My query looks like that : select * FROM OFFERS
I'm getting:
OFFER_NR_#=101042
OFFER_NR_1=0001G000210
OFFER_NR_10=0001G000411
and many many more...
I want to take exactly one value e.g. OFFER_NR and use it in request
------- request SEARCH_OFFER ${OFFER_NR} = 101042
During next course loop I want to take another value as variable
------- request SEARCH_OFFER ${OFFER_NR} = 0001G000210
It's just like using CSV FILE CONFIGURATION, which can give me exactly each next row for every thread group iteration, but I don't know how can I do this the same using jdbc request.
1 You need to use ForEach Controller configured as follows:
Input Variable Prefix: OFFER_NR
Output Variable Name: anything meaningful, i.e. CURRENT_OFFER
Check `Add "_" before number" box
Place your 2nd request under the ForEach Contoller
Refer each subsequent OFFER_NR as ${CURRENT_OFFER} where required
See Debugging JDBC Sampler Results in JMeter guide for more detailed explanation of your and other situations