How to change the Results file name during runtime in JMeter? - jmeter

I have a sampler inside my test plan. I also have a Simple Data Writer to save requests and responses.
I have entered "Results.xml" to filename field in Simple Data Writer. When I run the test plan, a text file gets generated in the designated path.
Is it possible to change the filename to "Threadgroupname_SamplerName_Results.xml" at runtime?
For example, I have renamed my Thread group to "Search" and the sampler to "CurrencyConverter". Is it possible to save the result in format "Search_CurrencyConverter_Results.xml" during runtime?

You can use variable placeholders and the __time function in the filename input field to have it dynamically set/changed at runtime. Something like this:
${results.dir}/myresultfile_${__time(YMDHMS)}.xml

According to the jmeter bugzilla, it is not possible to include the thread group name in the filename because "ResultCollector is initialized in StandardJMeterEngine thread before launch of any ThreadGroup so ctx.getThreadGroup() will return null."

Related

how to pass the dynamic filename in csv data set config in jmeter while the dynamic names are generated to save data of previous request?

I have one http request whose response comes in nested json and using groovy i am saving that data in different csv file on the basis of conditions.
the name of csv file is generated dynamically and saved in a variable
using vars.put() function
vars.put("_cFileName",cFileName.toString());
when try to use this variable in csv data set config
enter image description here
getting error message
2022-01-19 16:58:39,370 ERROR o.a.j.t.JMeterThread: Test failed!
java.lang.IllegalArgumentException: File ${_cFileName} must exist and be readable
it is not converting the name to actual file name
But in case if file name is not dynaamic and the variable is defined under user defined variable in test plan it will able to convert to actual file name?
is there any way we can use the dynamic name created in an previos request post processor?
You cannot, as per JMeter Test Elements Execution Order Configuration Elements are executed before everything else, CSV Data Set Config is a Configuration Element hence it's being initialized before any JMeter Variables are being set.
The solution would be moving to __CSVRead() function, JMeter Functions are evaluated at the time they're being called so it's possible to provide dynamic file name there, see How to Pick Different CSV Files at JMeter Runtime guide for more details if needed.

Jmeter can get parameters?

My question is - if I run a test via Jmeter, for example , if it's a site which enables you to book a flight, and you choose your source and destination when you record it.
Is it possible to pass different values to the destination field? I mean, maybe a txt file with some destinations and pass it to the Jmeter test and then, you will have some tests which each of them is running with a different destination?
If yes, how can I do it?
It's not necessary that it will be a txt file. Just a way to pass different values to one parameter.
Important: I'm using blazemeter plugin for chrome.
Thanks a lot,
appreciated.
You can use CSV Data Set Config. It is very easy to use for parameterizing variables in the test plan.
Check this article on blazemeter to understand the CSV Data Set Config quickly.
Depending on what you're trying to achieve you can go for:
HTML Link Parser. See Poll Example which shows how you can use it for selecting random values from inputs
You can extract all the possible values from the previous response using a Post-Processor, most probably CSS Selector Extractor and configure each thread to use its own (or random) value from the input
And last, but not the least, you can use an external data source like .txt or .csv file and utilize __StringFromFile() function or CSV Data Set Config so each thread (virtual user) would read the next value from file instead of using recorded hard-coded values.

How to hit parameterized url in Apache Jmeter?

This is my test URL " http://appr.seconddemo.org/hitssurveys/survey?uid=113&offerid=311&subid=subvalues&offr_id={Email} "
I want to hit the url 1500 times per second , and want to change the "{Email}" with real value in each iteration.
How it's possible please give me a step by step guide.
Considering that you need to pass the emails from the external file, the most efficient way that we are using in software testing companies is to pass the variable from .csv or .txt files using 'CSV Data Set Config' element of the JMeter.
Please find the steps that you need to follow:
Add a 'CSV Data Set Config' element from 'Config Element' by right-clicking the thread group
Set Filename field with complete path to your .csv or .txt file that contains your emails
Set Variable field as 'Email' [This variable name should be same as you set in your url request]
Ignore first line to False
Set other fields as per your requirement
Now add HTTP Sampler in your Thread Group and set the Protocol, Server Name, Method & Path as instructed in the screenshot:
Create .csv or .txt file and add all emails separated by new line:
Hope this answer is useful.
You can use the CSV Data Set Config. Put all your email credentials in the CSV file and make sure you have put this CSV file in your JMeter /bin directory.
Add a CSV dataset config in your test plan. Your CSV dataset config should be like:
Now in your thread group, define the number of threads you want to execute and then in your sampler put the path as follows:
http://appr.seconddemo.org/hitssurveys/survey?uid=113&offerid=311&subid=subvalues&offr_id=${Email}
Depending on where do your emails live there are following options:
If they are in a text file, each email on a new line you can use __StringFromFile() function like:
If they are in a database you can use JDBC PreProcessor to fetch the data from the database table column and put your request under ForEach Controller
If you need to provide just some random characters you can use __RandomString() function.
More information: JMeter Parameterization - The Complete Guide

Jmeter Parametrization

I'm very new to Jmeter. I need help with the input data file for jmeter.
Here is my situation.
My test data file structure is like this:
Test Case Name = XXXXXX11
RequestData = AAAAAAAAAA11
Expected Result = BBBBBBBBB11
Test Case Name = XXXXXX22
RequestData = AAAAAAAAAA22
Expected Result = BBBBBBBBB22
and so on ....
Now, I have to send the http request and verify the expected using Jmeter (Maven & Continuous Integration).
How can I parse the given file and verify the expected result?
I have tried the following:
__StringFromFile - but i don't know how to look for the line which has Request data or Expected result;
userParameter - but not sure how to pass values on runtime.
Could any of you please help me?
Do you have single test-case per file (i.e. single appearance of "Test Case Name",...,etc. in file)?
If so then you can possibly try to use custom Variables From CSV File plugin from Jmeter Plugins project.
My suggestion would be to convert your file to csv (with any delimiter you like). The first row becomes your heading, and each additional row becomes your data you want to pass in or validate. For example:
Test Case Name|Request Data|Expected Result
XXXXXX11|AAAAAAAAAA11|BBBBBBBBB11
XXXXXX22|AAAAAAAAAA22|BBBBBBBBB22
You can load this data in to your test plan using the CSV Data Set Config. Once you do, you'll be able to loop through each row of data if you set your Thread Group to Loop Forever. Then all you need to do in the test case is refer to your variables from the csv file like so:
${Test Case Name}.
Thank you so much guys!
I just wrote a bean shell script to parse the CSV file and stored all the request & response in the array and then created a for each loop around my http sampler. That met my requirement.
Thread Group
Beanshell preprocessr (To parse my CSV and to store it in an array)
For each loop (loops thru the array)
http sample
response assertion
Results

JMeter : how to use the timestamp of the parent

I'm testing a group of urls for performance tests. We have an SLA that states that a certain group of URLS must have an average of 80% success within a certain timerange.
The logic of the sla is done in a separate application. The data is fed from JMeter output into a database.
I need a way to identify the 5 tests of these urls, so that the application knows they belong to the same test. I use a Transaction Controller to group all the URL tests, but I still don't see how I can put an identifier in the generated output file (done by View Results Tree Listener). If I could reuse the timestamp of the parent, i.e. the Transaction Controller for the individual HTTP Requests, that would make my day. I tried adding User Defined Variables under the Transaction Controller, but I don't see how I can output the value of my variable into the output file.
Is anything similar possible?
Best regards,
Wim
Store your value in jmeter context using a Beanshell sampler then in jeter.properties uncomment sample_variables ans add the name under which you stored your value:
Optional list of JMeter variable names whose values are to be saved in the result data files.
Use commas to separate the names. For example:
sample_variables=SESSION_ID,REFERENCE
Regards
Philippe M.

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